119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman//===-- X86FastISel.cpp - X86 FastISel implementation ---------------------===// 219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// 319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// The LLVM Compiler Infrastructure 419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// 519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// This file is distributed under the University of Illinois Open Source 619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// License. See LICENSE.TXT for details. 719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// 819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman//===----------------------------------------------------------------------===// 919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// 1019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// This file defines the X86-specific support for the FastISel class. Much 1119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// of the target-specific code is generated by tablegen in the file 1219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// X86GenFastISel.inc, which is #included here. 1319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// 1419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman//===----------------------------------------------------------------------===// 1519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 1619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "X86.h" 1719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "X86InstrBuilder.h" 1819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "X86ISelLowering.h" 1919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "X86RegisterInfo.h" 2019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "X86Subtarget.h" 2119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "X86TargetMachine.h" 2219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/CallingConv.h" 2319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/DerivedTypes.h" 2419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/GlobalVariable.h" 2519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/GlobalAlias.h" 2619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/Instructions.h" 2719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/IntrinsicInst.h" 2819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/Operator.h" 2919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/CodeGen/Analysis.h" 3019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/CodeGen/FastISel.h" 3119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/CodeGen/FunctionLoweringInfo.h" 3219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/CodeGen/MachineConstantPool.h" 3319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/CodeGen/MachineFrameInfo.h" 3419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/CodeGen/MachineRegisterInfo.h" 3519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/Support/CallSite.h" 3619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/Support/ErrorHandling.h" 3719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/Support/GetElementPtrTypeIterator.h" 3819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "llvm/Target/TargetOptions.h" 3919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanusing namespace llvm; 4019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 4119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumannamespace { 4219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 4319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanclass X86FastISel : public FastISel { 4419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// Subtarget - Keep a pointer to the X86Subtarget around so that we can 4519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// make the right decision when generating code for different targets. 4619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const X86Subtarget *Subtarget; 4719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 4819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// StackPtr - Register used as the stack pointer. 4919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// 5019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned StackPtr; 5119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 5219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// X86ScalarSSEf32, X86ScalarSSEf64 - Select between SSE or x87 5319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// floating point ops. 5419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// When SSE is available, use it for f32 operations. 5519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// When SSE2 is available, use it for f64 operations. 5619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86ScalarSSEf64; 5719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86ScalarSSEf32; 5819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 5919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanpublic: 6019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman explicit X86FastISel(FunctionLoweringInfo &funcInfo) : FastISel(funcInfo) { 6119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Subtarget = &TM.getSubtarget<X86Subtarget>(); 6219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman StackPtr = Subtarget->is64Bit() ? X86::RSP : X86::ESP; 6319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86ScalarSSEf64 = Subtarget->hasSSE2() || Subtarget->hasAVX(); 6419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86ScalarSSEf32 = Subtarget->hasSSE1() || Subtarget->hasAVX(); 6519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 6619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 6719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman virtual bool TargetSelectInstruction(const Instruction *I); 6819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 6919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// TryToFoldLoad - The specified machine instr operand is a vreg, and that 7019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// vreg is being provided by the specified load instruction. If possible, 7119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// try to fold the load as an operand to the instruction, returning true if 7219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// possible. 7319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman virtual bool TryToFoldLoad(MachineInstr *MI, unsigned OpNo, 7419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const LoadInst *LI); 7519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 7619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "X86GenFastISel.inc" 7719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 7819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanprivate: 7919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86FastEmitCompare(const Value *LHS, const Value *RHS, EVT VT); 8019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 8119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86FastEmitLoad(EVT VT, const X86AddressMode &AM, unsigned &RR); 8219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 8319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86FastEmitStore(EVT VT, const Value *Val, const X86AddressMode &AM); 8419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86FastEmitStore(EVT VT, unsigned Val, const X86AddressMode &AM); 8519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 8619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86FastEmitExtend(ISD::NodeType Opc, EVT DstVT, unsigned Src, EVT SrcVT, 8719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned &ResultReg); 8819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 8919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectAddress(const Value *V, X86AddressMode &AM); 9019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectCallAddress(const Value *V, X86AddressMode &AM); 9119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 9219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectLoad(const Instruction *I); 9319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 9419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectStore(const Instruction *I); 9519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 9619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectRet(const Instruction *I); 9719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 9819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectCmp(const Instruction *I); 9919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 10019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectZExt(const Instruction *I); 10119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 10219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectBranch(const Instruction *I); 10319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 10419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectShift(const Instruction *I); 10519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 10619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectSelect(const Instruction *I); 10719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 10819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectTrunc(const Instruction *I); 10919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 11019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectFPExt(const Instruction *I); 11119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectFPTrunc(const Instruction *I); 11219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 11319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86VisitIntrinsicCall(const IntrinsicInst &I); 11419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86SelectCall(const Instruction *I); 11519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 11619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool DoSelectCall(const Instruction *I, const char *MemIntName); 11719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 11819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const X86InstrInfo *getInstrInfo() const { 11919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return getTargetMachine()->getInstrInfo(); 12019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 12119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const X86TargetMachine *getTargetMachine() const { 12219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return static_cast<const X86TargetMachine *>(&TM); 12319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 12419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 12519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned TargetMaterializeConstant(const Constant *C); 12619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 12719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned TargetMaterializeAlloca(const AllocaInst *C); 12819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 12919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned TargetMaterializeFloatZero(const ConstantFP *CF); 13019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 13119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// isScalarFPTypeInSSEReg - Return true if the specified scalar FP type is 13219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman /// computed in an SSE register, not on the X87 floating point stack. 13319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool isScalarFPTypeInSSEReg(EVT VT) const { 13419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return (VT == MVT::f64 && X86ScalarSSEf64) || // f64 is when SSE2 13519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman (VT == MVT::f32 && X86ScalarSSEf32); // f32 is when SSE1 13619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 13719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 13819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool isTypeLegal(Type *Ty, MVT &VT, bool AllowI1 = false); 13919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 14019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool IsMemcpySmall(uint64_t Len); 14119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 14219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool TryEmitSmallMemcpy(X86AddressMode DestAM, 14319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode SrcAM, uint64_t Len); 14419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman}; 14519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 14619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} // end anonymous namespace. 14719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 14819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::isTypeLegal(Type *Ty, MVT &VT, bool AllowI1) { 14919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT evt = TLI.getValueType(Ty, /*HandleUnknown=*/true); 15019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (evt == MVT::Other || !evt.isSimple()) 15119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Unhandled type. Halt "fast" selection and bail. 15219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 15319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 15419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman VT = evt.getSimpleVT(); 15519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // For now, require SSE/SSE2 for performing floating-point operations, 15619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // since x87 requires additional work. 15719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (VT == MVT::f64 && !X86ScalarSSEf64) 15819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 15919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (VT == MVT::f32 && !X86ScalarSSEf32) 16019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 16119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Similarly, no f80 support yet. 16219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (VT == MVT::f80) 16319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 16419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // We only handle legal types. For example, on x86-32 the instruction 16519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // selector contains all of the 64-bit instructions from x86-64, 16619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // under the assumption that i64 won't be used if the target doesn't 16719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // support it. 16819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return (AllowI1 && VT == MVT::i1) || TLI.isTypeLegal(VT); 16919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 17019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 17119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman#include "X86GenCallingConv.inc" 17219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 17319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// X86FastEmitLoad - Emit a machine instruction to load a value of type VT. 17419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// The address is either pre-computed, i.e. Ptr, or a GlobalAddress, i.e. GV. 17519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// Return true and the result register by reference if it is possible. 17619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86FastEmitLoad(EVT VT, const X86AddressMode &AM, 17719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned &ResultReg) { 17819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Get opcode and regclass of the output for the given load instruction. 17919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opc = 0; 18019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const TargetRegisterClass *RC = NULL; 18119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (VT.getSimpleVT().SimpleTy) { 18219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return false; 18319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i1: 18419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i8: 18519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV8rm; 18619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::GR8RegisterClass; 18719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 18819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i16: 18919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV16rm; 19019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::GR16RegisterClass; 19119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 19219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i32: 19319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV32rm; 19419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::GR32RegisterClass; 19519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 19619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i64: 19719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Must be in x86-64 mode. 19819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV64rm; 19919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::GR64RegisterClass; 20019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 20119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f32: 20219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86ScalarSSEf32) { 20319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = Subtarget->hasAVX() ? X86::VMOVSSrm : X86::MOVSSrm; 20419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::FR32RegisterClass; 20519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 20619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::LD_Fp32m; 20719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::RFP32RegisterClass; 20819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 20919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 21019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f64: 21119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86ScalarSSEf64) { 21219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = Subtarget->hasAVX() ? X86::VMOVSDrm : X86::MOVSDrm; 21319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::FR64RegisterClass; 21419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 21519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::LD_Fp64m; 21619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::RFP64RegisterClass; 21719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 21819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 21919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f80: 22019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // No f80 support yet. 22119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 22219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 22319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 22419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ResultReg = createResultReg(RC); 22519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addFullAddress(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, 22619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman DL, TII.get(Opc), ResultReg), AM); 22719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 22819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 22919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 23019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// X86FastEmitStore - Emit a machine instruction to store a value Val of 23119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// type VT. The address is either pre-computed, consisted of a base ptr, Ptr 23219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// and a displacement offset, or a GlobalAddress, 23319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// i.e. V. Return true if it is possible. 23419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool 23519bac1e08be200c31efd26f0f5fd144c9b3eefd3John BaumanX86FastISel::X86FastEmitStore(EVT VT, unsigned Val, const X86AddressMode &AM) { 23619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Get opcode and regclass of the output for the given store instruction. 23719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opc = 0; 23819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (VT.getSimpleVT().SimpleTy) { 23919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f80: // No f80 support yet. 24019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return false; 24119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i1: { 24219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Mask out all but lowest bit. 24319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned AndResult = createResultReg(X86::GR8RegisterClass); 24419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 24519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(X86::AND8ri), AndResult).addReg(Val).addImm(1); 24619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Val = AndResult; 24719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 24819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // FALLTHROUGH, handling i1 as i8. 24919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i8: Opc = X86::MOV8mr; break; 25019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i16: Opc = X86::MOV16mr; break; 25119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i32: Opc = X86::MOV32mr; break; 25219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i64: Opc = X86::MOV64mr; break; // Must be in x86-64 mode. 25319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f32: 25419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86ScalarSSEf32 ? 25519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman (Subtarget->hasAVX() ? X86::VMOVSSmr : X86::MOVSSmr) : X86::ST_Fp32m; 25619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 25719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f64: 25819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86ScalarSSEf64 ? 25919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman (Subtarget->hasAVX() ? X86::VMOVSDmr : X86::MOVSDmr) : X86::ST_Fp64m; 26019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 26119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 26219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 26319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addFullAddress(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, 26419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman DL, TII.get(Opc)), AM).addReg(Val); 26519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 26619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 26719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 26819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86FastEmitStore(EVT VT, const Value *Val, 26919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const X86AddressMode &AM) { 27019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Handle 'null' like i32/i64 0. 27119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (isa<ConstantPointerNull>(Val)) 27219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Val = Constant::getNullValue(TD.getIntPtrType(Val->getContext())); 27319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 27419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If this is a store of a simple constant, fold the constant into the store. 27519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const ConstantInt *CI = dyn_cast<ConstantInt>(Val)) { 27619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opc = 0; 27719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool Signed = true; 27819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (VT.getSimpleVT().SimpleTy) { 27919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: break; 28019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i1: Signed = false; // FALLTHROUGH to handle as i8. 28119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i8: Opc = X86::MOV8mi; break; 28219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i16: Opc = X86::MOV16mi; break; 28319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i32: Opc = X86::MOV32mi; break; 28419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i64: 28519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Must be a 32-bit sign extended value. 28619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if ((int)CI->getSExtValue() == CI->getSExtValue()) 28719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV64mi32; 28819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 28919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 29019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 29119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Opc) { 29219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addFullAddress(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, 29319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman DL, TII.get(Opc)), AM) 29419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addImm(Signed ? (uint64_t) CI->getSExtValue() : 29519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CI->getZExtValue()); 29619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 29719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 29819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 29919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 30019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ValReg = getRegForValue(Val); 30119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (ValReg == 0) 30219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 30319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 30419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86FastEmitStore(VT, ValReg, AM); 30519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 30619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 30719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// X86FastEmitExtend - Emit a machine instruction to extend a value Src of 30819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// type SrcVT to type DstVT using the specified extension opcode Opc (e.g. 30919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// ISD::SIGN_EXTEND). 31019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86FastEmitExtend(ISD::NodeType Opc, EVT DstVT, 31119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Src, EVT SrcVT, 31219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned &ResultReg) { 31319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned RR = FastEmit_r(SrcVT.getSimpleVT(), DstVT.getSimpleVT(), Opc, 31419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Src, /*TODO: Kill=*/false); 31519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 31619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (RR != 0) { 31719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ResultReg = RR; 31819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 31919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else 32019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 32119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 32219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 32319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// X86SelectAddress - Attempt to fill in an address from the given value. 32419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// 32519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectAddress(const Value *V, X86AddressMode &AM) { 32619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const User *U = NULL; 32719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opcode = Instruction::UserOp1; 32819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const Instruction *I = dyn_cast<Instruction>(V)) { 32919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Don't walk into other basic blocks; it's possible we haven't 33019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // visited them yet, so the instructions may not yet be assigned 33119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // virtual registers. 33219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (FuncInfo.StaticAllocaMap.count(static_cast<const AllocaInst *>(V)) || 33319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FuncInfo.MBBMap[I->getParent()] == FuncInfo.MBB) { 33419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opcode = I->getOpcode(); 33519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman U = I; 33619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 33719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (const ConstantExpr *C = dyn_cast<ConstantExpr>(V)) { 33819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opcode = C->getOpcode(); 33919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman U = C; 34019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 34119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 34219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (PointerType *Ty = dyn_cast<PointerType>(V->getType())) 34319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Ty->getAddressSpace() > 255) 34419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Fast instruction selection doesn't support the special 34519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // address spaces. 34619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 34719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 34819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (Opcode) { 34919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: break; 35019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::BitCast: 35119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Look past bitcasts. 35219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectAddress(U->getOperand(0), AM); 35319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 35419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::IntToPtr: 35519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Look past no-op inttoptrs. 35619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (TLI.getValueType(U->getOperand(0)->getType()) == TLI.getPointerTy()) 35719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectAddress(U->getOperand(0), AM); 35819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 35919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 36019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::PtrToInt: 36119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Look past no-op ptrtoints. 36219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (TLI.getValueType(U->getType()) == TLI.getPointerTy()) 36319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectAddress(U->getOperand(0), AM); 36419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 36519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 36619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Alloca: { 36719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Do static allocas. 36819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const AllocaInst *A = cast<AllocaInst>(V); 36919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman DenseMap<const AllocaInst*, int>::iterator SI = 37019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FuncInfo.StaticAllocaMap.find(A); 37119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (SI != FuncInfo.StaticAllocaMap.end()) { 37219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.BaseType = X86AddressMode::FrameIndexBase; 37319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Base.FrameIndex = SI->second; 37419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 37519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 37619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 37719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 37819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 37919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Add: { 38019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Adds of constants are common and easy enough. 38119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const ConstantInt *CI = dyn_cast<ConstantInt>(U->getOperand(1))) { 38219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman uint64_t Disp = (int32_t)AM.Disp + (uint64_t)CI->getSExtValue(); 38319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // They have to fit in the 32-bit signed displacement field though. 38419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (isInt<32>(Disp)) { 38519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Disp = (uint32_t)Disp; 38619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectAddress(U->getOperand(0), AM); 38719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 38819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 38919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 39019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 39119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 39219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::GetElementPtr: { 39319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode SavedAM = AM; 39419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 39519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Pattern-match simple GEPs. 39619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman uint64_t Disp = (int32_t)AM.Disp; 39719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned IndexReg = AM.IndexReg; 39819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Scale = AM.Scale; 39919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman gep_type_iterator GTI = gep_type_begin(U); 40019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Iterate through the indices, folding what we can. Constants can be 40119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // folded, and one dynamic index can be handled, if the scale is supported. 40219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman for (User::const_op_iterator i = U->op_begin() + 1, e = U->op_end(); 40319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman i != e; ++i, ++GTI) { 40419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *Op = *i; 40519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (StructType *STy = dyn_cast<StructType>(*GTI)) { 40619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const StructLayout *SL = TD.getStructLayout(STy); 40719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Disp += SL->getElementOffset(cast<ConstantInt>(Op)->getZExtValue()); 40819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman continue; 40919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 41019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 41119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // A array/variable index is always of the form i*S where S is the 41219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // constant scale size. See if we can push the scale into immediates. 41319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman uint64_t S = TD.getTypeAllocSize(GTI.getIndexedType()); 41419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman for (;;) { 41519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const ConstantInt *CI = dyn_cast<ConstantInt>(Op)) { 41619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Constant-offset addressing. 41719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Disp += CI->getSExtValue() * S; 41819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 41919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 42019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (isa<AddOperator>(Op) && 42119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman (!isa<Instruction>(Op) || 42219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FuncInfo.MBBMap[cast<Instruction>(Op)->getParent()] 42319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman == FuncInfo.MBB) && 42419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman isa<ConstantInt>(cast<AddOperator>(Op)->getOperand(1))) { 42519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // An add (in the same block) with a constant operand. Fold the 42619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // constant. 42719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ConstantInt *CI = 42819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman cast<ConstantInt>(cast<AddOperator>(Op)->getOperand(1)); 42919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Disp += CI->getSExtValue() * S; 43019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Iterate on the other operand. 43119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Op = cast<AddOperator>(Op)->getOperand(0); 43219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman continue; 43319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 43419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (IndexReg == 0 && 43519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman (!AM.GV || !Subtarget->isPICStyleRIPRel()) && 43619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman (S == 1 || S == 2 || S == 4 || S == 8)) { 43719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Scaled-index addressing. 43819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Scale = S; 43919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman IndexReg = getRegForGEPIndex(Op).first; 44019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (IndexReg == 0) 44119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 44219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 44319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 44419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Unsupported. 44519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman goto unsupported_gep; 44619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 44719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 44819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Check for displacement overflow. 44919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isInt<32>(Disp)) 45019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 45119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Ok, the GEP indices were covered by constant-offset and scaled-index 45219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // addressing. Update the address state and move on to examining the base. 45319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.IndexReg = IndexReg; 45419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Scale = Scale; 45519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Disp = (uint32_t)Disp; 45619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86SelectAddress(U->getOperand(0), AM)) 45719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 45819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 45919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If we couldn't merge the gep value into this addr mode, revert back to 46019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // our address and just match the value instead of completely failing. 46119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM = SavedAM; 46219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 46319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsupported_gep: 46419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Ok, the GEP indices weren't all covered. 46519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 46619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 46719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 46819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 46919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Handle constant address. 47019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) { 47119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Can't handle alternate code models yet. 47219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (TM.getCodeModel() != CodeModel::Small) 47319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 47419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 47519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Can't handle TLS yet. 47619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV)) 47719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (GVar->isThreadLocal()) 47819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 47919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 48019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Can't handle TLS yet, part 2 (this is slightly crazy, but this is how 48119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // it works...). 48219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const GlobalAlias *GA = dyn_cast<GlobalAlias>(GV)) 48319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const GlobalVariable *GVar = 48419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman dyn_cast_or_null<GlobalVariable>(GA->resolveAliasedGlobal(false))) 48519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (GVar->isThreadLocal()) 48619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 48719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 48819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // RIP-relative addresses can't have additional register operands, so if 48919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // we've already folded stuff into the addressing mode, just force the 49019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // global value into its own register, which we can use as the basereg. 49119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!Subtarget->isPICStyleRIPRel() || 49219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman (AM.Base.Reg == 0 && AM.IndexReg == 0)) { 49319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Okay, we've committed to selecting this global. Set up the address. 49419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.GV = GV; 49519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 49619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Allow the subtarget to classify the global. 49719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned char GVFlags = Subtarget->ClassifyGlobalReference(GV, TM); 49819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 49919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If this reference is relative to the pic base, set it now. 50019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (isGlobalRelativeToPICBase(GVFlags)) { 50119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // FIXME: How do we know Base.Reg is free?? 50219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Base.Reg = getInstrInfo()->getGlobalBaseReg(FuncInfo.MF); 50319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 50419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 50519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Unless the ABI requires an extra load, return a direct reference to 50619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // the global. 50719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isGlobalStubReference(GVFlags)) { 50819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isPICStyleRIPRel()) { 50919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Use rip-relative addressing if we can. Above we verified that the 51019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // base and index registers are unused. 51119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(AM.Base.Reg == 0 && AM.IndexReg == 0); 51219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Base.Reg = X86::RIP; 51319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 51419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.GVOpFlags = GVFlags; 51519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 51619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 51719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 51819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Ok, we need to do a load from a stub. If we've already loaded from 51919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // this stub, reuse the loaded pointer, otherwise emit the load now. 52019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman DenseMap<const Value*, unsigned>::iterator I = LocalValueMap.find(V); 52119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned LoadReg; 52219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (I != LocalValueMap.end() && I->second != 0) { 52319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman LoadReg = I->second; 52419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 52519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Issue load from stub. 52619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opc = 0; 52719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const TargetRegisterClass *RC = NULL; 52819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode StubAM; 52919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman StubAM.Base.Reg = AM.Base.Reg; 53019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman StubAM.GV = GV; 53119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman StubAM.GVOpFlags = GVFlags; 53219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 53319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Prepare for inserting code in the local-value area. 53419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SavePoint SaveInsertPt = enterLocalValueArea(); 53519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 53619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (TLI.getPointerTy() == MVT::i64) { 53719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV64rm; 53819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::GR64RegisterClass; 53919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 54019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isPICStyleRIPRel()) 54119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman StubAM.Base.Reg = X86::RIP; 54219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 54319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV32rm; 54419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::GR32RegisterClass; 54519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 54619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 54719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman LoadReg = createResultReg(RC); 54819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MachineInstrBuilder LoadMI = 54919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(Opc), LoadReg); 55019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addFullAddress(LoadMI, StubAM); 55119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 55219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Ok, back to normal mode. 55319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman leaveLocalValueArea(SaveInsertPt); 55419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 55519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Prevent loading GV stub multiple times in same MBB. 55619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman LocalValueMap[V] = LoadReg; 55719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 55819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 55919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Now construct the final address. Note that the Disp, Scale, 56019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // and Index values may already be set here. 56119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Base.Reg = LoadReg; 56219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.GV = 0; 56319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 56419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 56519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 56619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 56719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If all else fails, try to materialize the value in a register. 56819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!AM.GV || !Subtarget->isPICStyleRIPRel()) { 56919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (AM.Base.Reg == 0) { 57019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Base.Reg = getRegForValue(V); 57119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return AM.Base.Reg != 0; 57219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 57319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (AM.IndexReg == 0) { 57419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(AM.Scale == 1 && "Scale with no index!"); 57519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.IndexReg = getRegForValue(V); 57619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return AM.IndexReg != 0; 57719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 57819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 57919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 58019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 58119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 58219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 58319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// X86SelectCallAddress - Attempt to fill in an address from the given value. 58419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// 58519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectCallAddress(const Value *V, X86AddressMode &AM) { 58619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const User *U = NULL; 58719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opcode = Instruction::UserOp1; 58819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const Instruction *I = dyn_cast<Instruction>(V)) { 58919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opcode = I->getOpcode(); 59019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman U = I; 59119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (const ConstantExpr *C = dyn_cast<ConstantExpr>(V)) { 59219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opcode = C->getOpcode(); 59319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman U = C; 59419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 59519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 59619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (Opcode) { 59719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: break; 59819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::BitCast: 59919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Look past bitcasts. 60019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectCallAddress(U->getOperand(0), AM); 60119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 60219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::IntToPtr: 60319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Look past no-op inttoptrs. 60419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (TLI.getValueType(U->getOperand(0)->getType()) == TLI.getPointerTy()) 60519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectCallAddress(U->getOperand(0), AM); 60619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 60719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 60819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::PtrToInt: 60919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Look past no-op ptrtoints. 61019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (TLI.getValueType(U->getType()) == TLI.getPointerTy()) 61119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectCallAddress(U->getOperand(0), AM); 61219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 61319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 61419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 61519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Handle constant address. 61619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const GlobalValue *GV = dyn_cast<GlobalValue>(V)) { 61719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Can't handle alternate code models yet. 61819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (TM.getCodeModel() != CodeModel::Small) 61919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 62019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 62119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // RIP-relative addresses can't have additional register operands. 62219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isPICStyleRIPRel() && 62319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman (AM.Base.Reg != 0 || AM.IndexReg != 0)) 62419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 62519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 62619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Can't handle DLLImport. 62719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (GV->hasDLLImportLinkage()) 62819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 62919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 63019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Can't handle TLS. 63119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV)) 63219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (GVar->isThreadLocal()) 63319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 63419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 63519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Okay, we've committed to selecting this global. Set up the basic address. 63619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.GV = GV; 63719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 63819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // No ABI requires an extra load for anything other than DLLImport, which 63919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // we rejected above. Return a direct reference to the global. 64019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isPICStyleRIPRel()) { 64119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Use rip-relative addressing if we can. Above we verified that the 64219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // base and index registers are unused. 64319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(AM.Base.Reg == 0 && AM.IndexReg == 0); 64419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Base.Reg = X86::RIP; 64519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (Subtarget->isPICStyleStubPIC()) { 64619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.GVOpFlags = X86II::MO_PIC_BASE_OFFSET; 64719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (Subtarget->isPICStyleGOT()) { 64819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.GVOpFlags = X86II::MO_GOTOFF; 64919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 65019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 65119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 65219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 65319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 65419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If all else fails, try to materialize the value in a register. 65519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!AM.GV || !Subtarget->isPICStyleRIPRel()) { 65619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (AM.Base.Reg == 0) { 65719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Base.Reg = getRegForValue(V); 65819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return AM.Base.Reg != 0; 65919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 66019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (AM.IndexReg == 0) { 66119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(AM.Scale == 1 && "Scale with no index!"); 66219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.IndexReg = getRegForValue(V); 66319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return AM.IndexReg != 0; 66419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 66519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 66619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 66719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 66819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 66919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 67019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 67119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// X86SelectStore - Select and emit code to implement store instructions. 67219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectStore(const Instruction *I) { 67319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Atomic stores need special handling. 67419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (cast<StoreInst>(I)->isAtomic()) 67519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 67619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 67719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT VT; 67819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isTypeLegal(I->getOperand(0)->getType(), VT, /*AllowI1=*/true)) 67919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 68019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 68119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode AM; 68219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86SelectAddress(I->getOperand(1), AM)) 68319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 68419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 68519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86FastEmitStore(VT, I->getOperand(0), AM); 68619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 68719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 68819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// X86SelectRet - Select and emit code to implement ret instructions. 68919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectRet(const Instruction *I) { 69019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const ReturnInst *Ret = cast<ReturnInst>(I); 69119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Function &F = *I->getParent()->getParent(); 69219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 69319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!FuncInfo.CanLowerReturn) 69419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 69519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 69619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CallingConv::ID CC = F.getCallingConv(); 69719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CC != CallingConv::C && 69819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CC != CallingConv::Fast && 69919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CC != CallingConv::X86_FastCall) 70019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 70119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 70219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isTargetWin64()) 70319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 70419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 70519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Don't handle popping bytes on return for now. 70619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (FuncInfo.MF->getInfo<X86MachineFunctionInfo>() 70719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ->getBytesToPopOnReturn() != 0) 70819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return 0; 70919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 71019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // fastcc with -tailcallopt is intended to provide a guaranteed 71119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // tail call optimization. Fastisel doesn't know how to do that. 71219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CC == CallingConv::Fast && GuaranteedTailCallOpt) 71319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 71419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 71519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Let SDISel handle vararg functions. 71619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (F.isVarArg()) 71719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 71819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 71919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Ret->getNumOperands() > 0) { 72019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<ISD::OutputArg, 4> Outs; 72119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman GetReturnInfo(F.getReturnType(), F.getAttributes().getRetAttributes(), 72219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Outs, TLI); 72319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 72419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Analyze operands of the call, assigning locations to each operand. 72519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<CCValAssign, 16> ValLocs; 72619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CCState CCInfo(CC, F.isVarArg(), *FuncInfo.MF, TM, ValLocs, 72719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman I->getContext()); 72819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CCInfo.AnalyzeReturn(Outs, RetCC_X86); 72919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 73019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *RV = Ret->getOperand(0); 73119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Reg = getRegForValue(RV); 73219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Reg == 0) 73319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 73419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 73519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Only handle a single return value for now. 73619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (ValLocs.size() != 1) 73719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 73819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 73919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CCValAssign &VA = ValLocs[0]; 74019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 74119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Don't bother handling odd stuff for now. 74219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (VA.getLocInfo() != CCValAssign::Full) 74319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 74419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Only handle register returns for now. 74519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!VA.isRegLoc()) 74619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 74719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 74819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // The calling-convention tables for x87 returns don't tell 74919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // the whole story. 75019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (VA.getLocReg() == X86::ST0 || VA.getLocReg() == X86::ST1) 75119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 75219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 75319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned SrcReg = Reg + VA.getValNo(); 75419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT SrcVT = TLI.getValueType(RV->getType()); 75519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT DstVT = VA.getValVT(); 75619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Special handling for extended integers. 75719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (SrcVT != DstVT) { 75819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (SrcVT != MVT::i1 && SrcVT != MVT::i8 && SrcVT != MVT::i16) 75919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 76019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 76119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!Outs[0].Flags.isZExt() && !Outs[0].Flags.isSExt()) 76219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 76319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 76419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(DstVT == MVT::i32 && "X86 should always ext to i32"); 76519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 76619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (SrcVT == MVT::i1) { 76719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Outs[0].Flags.isSExt()) 76819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 76919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SrcReg = FastEmitZExtFromI1(MVT::i8, SrcReg, /*TODO: Kill=*/false); 77019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SrcVT = MVT::i8; 77119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 77219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Op = Outs[0].Flags.isZExt() ? ISD::ZERO_EXTEND : 77319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ISD::SIGN_EXTEND; 77419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SrcReg = FastEmit_r(SrcVT.getSimpleVT(), DstVT.getSimpleVT(), Op, 77519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SrcReg, /*TODO: Kill=*/false); 77619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 77719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 77819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Make the copy. 77919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned DstReg = VA.getLocReg(); 78019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const TargetRegisterClass* SrcRC = MRI.getRegClass(SrcReg); 78119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Avoid a cross-class copy. This is very unlikely. 78219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!SrcRC->contains(DstReg)) 78319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 78419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(TargetOpcode::COPY), 78519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman DstReg).addReg(SrcReg); 78619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 78719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Mark the register as live out of the function. 78819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MRI.addLiveOut(VA.getLocReg()); 78919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 79019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 79119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Now emit the RET. 79219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::RET)); 79319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 79419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 79519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 79619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// X86SelectLoad - Select and emit code to implement load instructions. 79719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// 79819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectLoad(const Instruction *I) { 79919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Atomic loads need special handling. 80019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (cast<LoadInst>(I)->isAtomic()) 80119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 80219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 80319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT VT; 80419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isTypeLegal(I->getType(), VT, /*AllowI1=*/true)) 80519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 80619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 80719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode AM; 80819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86SelectAddress(I->getOperand(0), AM)) 80919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 81019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 81119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = 0; 81219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86FastEmitLoad(VT, AM, ResultReg)) { 81319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg); 81419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 81519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 81619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 81719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 81819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 81919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanstatic unsigned X86ChooseCmpOpcode(EVT VT, const X86Subtarget *Subtarget) { 82019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool HasAVX = Subtarget->hasAVX(); 82119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86ScalarSSEf32 = HasAVX || Subtarget->hasSSE1(); 82219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool X86ScalarSSEf64 = HasAVX || Subtarget->hasSSE2(); 82319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 82419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (VT.getSimpleVT().SimpleTy) { 82519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return 0; 82619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i8: return X86::CMP8rr; 82719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i16: return X86::CMP16rr; 82819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i32: return X86::CMP32rr; 82919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i64: return X86::CMP64rr; 83019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f32: 83119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86ScalarSSEf32 ? (HasAVX ? X86::VUCOMISSrr : X86::UCOMISSrr) : 0; 83219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f64: 83319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86ScalarSSEf64 ? (HasAVX ? X86::VUCOMISDrr : X86::UCOMISDrr) : 0; 83419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 83519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 83619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 83719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// X86ChooseCmpImmediateOpcode - If we have a comparison with RHS as the RHS 83819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// of the comparison, return an opcode that works for the compare (e.g. 83919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// CMP32ri) otherwise return 0. 84019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanstatic unsigned X86ChooseCmpImmediateOpcode(EVT VT, const ConstantInt *RHSC) { 84119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (VT.getSimpleVT().SimpleTy) { 84219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Otherwise, we can't fold the immediate into this comparison. 84319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return 0; 84419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i8: return X86::CMP8ri; 84519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i16: return X86::CMP16ri; 84619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i32: return X86::CMP32ri; 84719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i64: 84819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // 64-bit comparisons are only valid if the immediate fits in a 32-bit sext 84919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // field. 85019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if ((int)RHSC->getSExtValue() == RHSC->getSExtValue()) 85119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86::CMP64ri32; 85219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return 0; 85319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 85419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 85519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 85619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86FastEmitCompare(const Value *Op0, const Value *Op1, 85719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT VT) { 85819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Op0Reg = getRegForValue(Op0); 85919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Op0Reg == 0) return false; 86019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 86119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Handle 'null' like i32/i64 0. 86219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (isa<ConstantPointerNull>(Op1)) 86319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Op1 = Constant::getNullValue(TD.getIntPtrType(Op0->getContext())); 86419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 86519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // We have two options: compare with register or immediate. If the RHS of 86619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // the compare is an immediate that we can fold into this compare, use 86719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // CMPri, otherwise use CMPrr. 86819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const ConstantInt *Op1C = dyn_cast<ConstantInt>(Op1)) { 86919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (unsigned CompareImmOpc = X86ChooseCmpImmediateOpcode(VT, Op1C)) { 87019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(CompareImmOpc)) 87119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(Op0Reg) 87219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addImm(Op1C->getSExtValue()); 87319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 87419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 87519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 87619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 87719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned CompareOpc = X86ChooseCmpOpcode(VT, Subtarget); 87819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CompareOpc == 0) return false; 87919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 88019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Op1Reg = getRegForValue(Op1); 88119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Op1Reg == 0) return false; 88219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(CompareOpc)) 88319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(Op0Reg) 88419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(Op1Reg); 88519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 88619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 88719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 88819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 88919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectCmp(const Instruction *I) { 89019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const CmpInst *CI = cast<CmpInst>(I); 89119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 89219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT VT; 89319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isTypeLegal(I->getOperand(0)->getType(), VT)) 89419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 89519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 89619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = createResultReg(&X86::GR8RegClass); 89719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned SetCCOpc; 89819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool SwapArgs; // false -> compare Op0, Op1. true -> compare Op1, Op0. 89919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (CI->getPredicate()) { 90019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_OEQ: { 90119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86FastEmitCompare(CI->getOperand(0), CI->getOperand(1), VT)) 90219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 90319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 90419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned EReg = createResultReg(&X86::GR8RegClass); 90519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned NPReg = createResultReg(&X86::GR8RegClass); 90619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::SETEr), EReg); 90719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 90819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(X86::SETNPr), NPReg); 90919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 91019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(X86::AND8rr), ResultReg).addReg(NPReg).addReg(EReg); 91119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg); 91219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 91319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 91419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_UNE: { 91519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86FastEmitCompare(CI->getOperand(0), CI->getOperand(1), VT)) 91619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 91719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 91819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned NEReg = createResultReg(&X86::GR8RegClass); 91919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned PReg = createResultReg(&X86::GR8RegClass); 92019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::SETNEr), NEReg); 92119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::SETPr), PReg); 92219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::OR8rr),ResultReg) 92319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(PReg).addReg(NEReg); 92419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg); 92519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 92619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 92719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_OGT: SwapArgs = false; SetCCOpc = X86::SETAr; break; 92819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_OGE: SwapArgs = false; SetCCOpc = X86::SETAEr; break; 92919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_OLT: SwapArgs = true; SetCCOpc = X86::SETAr; break; 93019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_OLE: SwapArgs = true; SetCCOpc = X86::SETAEr; break; 93119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_ONE: SwapArgs = false; SetCCOpc = X86::SETNEr; break; 93219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_ORD: SwapArgs = false; SetCCOpc = X86::SETNPr; break; 93319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_UNO: SwapArgs = false; SetCCOpc = X86::SETPr; break; 93419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_UEQ: SwapArgs = false; SetCCOpc = X86::SETEr; break; 93519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_UGT: SwapArgs = true; SetCCOpc = X86::SETBr; break; 93619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_UGE: SwapArgs = true; SetCCOpc = X86::SETBEr; break; 93719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_ULT: SwapArgs = false; SetCCOpc = X86::SETBr; break; 93819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_ULE: SwapArgs = false; SetCCOpc = X86::SETBEr; break; 93919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 94019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_EQ: SwapArgs = false; SetCCOpc = X86::SETEr; break; 94119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_NE: SwapArgs = false; SetCCOpc = X86::SETNEr; break; 94219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_UGT: SwapArgs = false; SetCCOpc = X86::SETAr; break; 94319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_UGE: SwapArgs = false; SetCCOpc = X86::SETAEr; break; 94419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_ULT: SwapArgs = false; SetCCOpc = X86::SETBr; break; 94519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_ULE: SwapArgs = false; SetCCOpc = X86::SETBEr; break; 94619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_SGT: SwapArgs = false; SetCCOpc = X86::SETGr; break; 94719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_SGE: SwapArgs = false; SetCCOpc = X86::SETGEr; break; 94819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_SLT: SwapArgs = false; SetCCOpc = X86::SETLr; break; 94919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_SLE: SwapArgs = false; SetCCOpc = X86::SETLEr; break; 95019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: 95119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 95219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 95319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 95419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *Op0 = CI->getOperand(0), *Op1 = CI->getOperand(1); 95519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (SwapArgs) 95619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman std::swap(Op0, Op1); 95719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 95819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Emit a compare of Op0/Op1. 95919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86FastEmitCompare(Op0, Op1, VT)) 96019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 96119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 96219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(SetCCOpc), ResultReg); 96319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg); 96419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 96519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 96619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 96719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectZExt(const Instruction *I) { 96819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Handle zero-extension from i1 to i8, which is common. 96919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!I->getOperand(0)->getType()->isIntegerTy(1)) 97019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 97119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 97219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT DstVT = TLI.getValueType(I->getType()); 97319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!TLI.isTypeLegal(DstVT)) 97419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 97519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 97619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = getRegForValue(I->getOperand(0)); 97719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (ResultReg == 0) 97819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 97919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 98019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Set the high bits to zero. 98119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ResultReg = FastEmitZExtFromI1(MVT::i8, ResultReg, /*TODO: Kill=*/false); 98219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (ResultReg == 0) 98319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 98419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 98519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (DstVT != MVT::i8) { 98619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ResultReg = FastEmit_r(MVT::i8, DstVT.getSimpleVT(), ISD::ZERO_EXTEND, 98719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ResultReg, /*Kill=*/true); 98819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (ResultReg == 0) 98919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 99019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 99119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 99219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg); 99319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 99419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 99519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 99619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 99719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectBranch(const Instruction *I) { 99819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Unconditional branches are selected by tablegen-generated code. 99919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Handle a conditional branch. 100019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const BranchInst *BI = cast<BranchInst>(I); 100119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MachineBasicBlock *TrueMBB = FuncInfo.MBBMap[BI->getSuccessor(0)]; 100219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MachineBasicBlock *FalseMBB = FuncInfo.MBBMap[BI->getSuccessor(1)]; 100319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 100419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Fold the common case of a conditional branch with a comparison 100519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // in the same block (values defined on other blocks may not have 100619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // initialized registers). 100719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const CmpInst *CI = dyn_cast<CmpInst>(BI->getCondition())) { 100819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CI->hasOneUse() && CI->getParent() == I->getParent()) { 100919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT VT = TLI.getValueType(CI->getOperand(0)->getType()); 101019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 101119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Try to take advantage of fallthrough opportunities. 101219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CmpInst::Predicate Predicate = CI->getPredicate(); 101319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (FuncInfo.MBB->isLayoutSuccessor(TrueMBB)) { 101419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman std::swap(TrueMBB, FalseMBB); 101519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Predicate = CmpInst::getInversePredicate(Predicate); 101619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 101719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 101819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool SwapArgs; // false -> compare Op0, Op1. true -> compare Op1, Op0. 101919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned BranchOpc; // Opcode to jump on, e.g. "X86::JA" 102019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 102119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (Predicate) { 102219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_OEQ: 102319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman std::swap(TrueMBB, FalseMBB); 102419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Predicate = CmpInst::FCMP_UNE; 102519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // FALL THROUGH 102619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_UNE: SwapArgs = false; BranchOpc = X86::JNE_4; break; 102719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_OGT: SwapArgs = false; BranchOpc = X86::JA_4; break; 102819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_OGE: SwapArgs = false; BranchOpc = X86::JAE_4; break; 102919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_OLT: SwapArgs = true; BranchOpc = X86::JA_4; break; 103019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_OLE: SwapArgs = true; BranchOpc = X86::JAE_4; break; 103119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_ONE: SwapArgs = false; BranchOpc = X86::JNE_4; break; 103219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_ORD: SwapArgs = false; BranchOpc = X86::JNP_4; break; 103319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_UNO: SwapArgs = false; BranchOpc = X86::JP_4; break; 103419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_UEQ: SwapArgs = false; BranchOpc = X86::JE_4; break; 103519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_UGT: SwapArgs = true; BranchOpc = X86::JB_4; break; 103619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_UGE: SwapArgs = true; BranchOpc = X86::JBE_4; break; 103719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_ULT: SwapArgs = false; BranchOpc = X86::JB_4; break; 103819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::FCMP_ULE: SwapArgs = false; BranchOpc = X86::JBE_4; break; 103919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 104019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_EQ: SwapArgs = false; BranchOpc = X86::JE_4; break; 104119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_NE: SwapArgs = false; BranchOpc = X86::JNE_4; break; 104219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_UGT: SwapArgs = false; BranchOpc = X86::JA_4; break; 104319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_UGE: SwapArgs = false; BranchOpc = X86::JAE_4; break; 104419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_ULT: SwapArgs = false; BranchOpc = X86::JB_4; break; 104519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_ULE: SwapArgs = false; BranchOpc = X86::JBE_4; break; 104619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_SGT: SwapArgs = false; BranchOpc = X86::JG_4; break; 104719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_SGE: SwapArgs = false; BranchOpc = X86::JGE_4; break; 104819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_SLT: SwapArgs = false; BranchOpc = X86::JL_4; break; 104919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CmpInst::ICMP_SLE: SwapArgs = false; BranchOpc = X86::JLE_4; break; 105019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: 105119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 105219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 105319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 105419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *Op0 = CI->getOperand(0), *Op1 = CI->getOperand(1); 105519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (SwapArgs) 105619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman std::swap(Op0, Op1); 105719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 105819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Emit a compare of the LHS and RHS, setting the flags. 105919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86FastEmitCompare(Op0, Op1, VT)) 106019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 106119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 106219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(BranchOpc)) 106319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addMBB(TrueMBB); 106419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 106519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Predicate == CmpInst::FCMP_UNE) { 106619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // X86 requires a second branch to handle UNE (and OEQ, 106719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // which is mapped to UNE above). 106819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::JP_4)) 106919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addMBB(TrueMBB); 107019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 107119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 107219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FastEmitBranch(FalseMBB, DL); 107319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FuncInfo.MBB->addSuccessor(TrueMBB); 107419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 107519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 107619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (TruncInst *TI = dyn_cast<TruncInst>(BI->getCondition())) { 107719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Handle things like "%cond = trunc i32 %X to i1 / br i1 %cond", which 107819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // typically happen for _Bool and C++ bools. 107919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT SourceVT; 108019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (TI->hasOneUse() && TI->getParent() == I->getParent() && 108119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman isTypeLegal(TI->getOperand(0)->getType(), SourceVT)) { 108219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned TestOpc = 0; 108319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (SourceVT.SimpleTy) { 108419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: break; 108519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i8: TestOpc = X86::TEST8ri; break; 108619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i16: TestOpc = X86::TEST16ri; break; 108719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i32: TestOpc = X86::TEST32ri; break; 108819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i64: TestOpc = X86::TEST64ri32; break; 108919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 109019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (TestOpc) { 109119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned OpReg = getRegForValue(TI->getOperand(0)); 109219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (OpReg == 0) return false; 109319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(TestOpc)) 109419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(OpReg).addImm(1); 109519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 109619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned JmpOpc = X86::JNE_4; 109719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (FuncInfo.MBB->isLayoutSuccessor(TrueMBB)) { 109819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman std::swap(TrueMBB, FalseMBB); 109919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman JmpOpc = X86::JE_4; 110019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 110119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 110219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(JmpOpc)) 110319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addMBB(TrueMBB); 110419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FastEmitBranch(FalseMBB, DL); 110519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FuncInfo.MBB->addSuccessor(TrueMBB); 110619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 110719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 110819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 110919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 111019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 111119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Otherwise do a clumsy setcc and re-test it. 111219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Note that i1 essentially gets ANY_EXTEND'ed to i8 where it isn't used 111319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // in an explicit cast, so make sure to handle that correctly. 111419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned OpReg = getRegForValue(BI->getCondition()); 111519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (OpReg == 0) return false; 111619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 111719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::TEST8ri)) 111819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(OpReg).addImm(1); 111919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::JNE_4)) 112019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addMBB(TrueMBB); 112119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FastEmitBranch(FalseMBB, DL); 112219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FuncInfo.MBB->addSuccessor(TrueMBB); 112319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 112419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 112519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 112619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectShift(const Instruction *I) { 112719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned CReg = 0, OpReg = 0; 112819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const TargetRegisterClass *RC = NULL; 112919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (I->getType()->isIntegerTy(8)) { 113019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CReg = X86::CL; 113119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = &X86::GR8RegClass; 113219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (I->getOpcode()) { 113319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::LShr: OpReg = X86::SHR8rCL; break; 113419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::AShr: OpReg = X86::SAR8rCL; break; 113519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Shl: OpReg = X86::SHL8rCL; break; 113619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return false; 113719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 113819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (I->getType()->isIntegerTy(16)) { 113919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CReg = X86::CX; 114019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = &X86::GR16RegClass; 114119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (I->getOpcode()) { 114219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::LShr: OpReg = X86::SHR16rCL; break; 114319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::AShr: OpReg = X86::SAR16rCL; break; 114419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Shl: OpReg = X86::SHL16rCL; break; 114519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return false; 114619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 114719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (I->getType()->isIntegerTy(32)) { 114819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CReg = X86::ECX; 114919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = &X86::GR32RegClass; 115019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (I->getOpcode()) { 115119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::LShr: OpReg = X86::SHR32rCL; break; 115219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::AShr: OpReg = X86::SAR32rCL; break; 115319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Shl: OpReg = X86::SHL32rCL; break; 115419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return false; 115519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 115619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (I->getType()->isIntegerTy(64)) { 115719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CReg = X86::RCX; 115819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = &X86::GR64RegClass; 115919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (I->getOpcode()) { 116019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::LShr: OpReg = X86::SHR64rCL; break; 116119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::AShr: OpReg = X86::SAR64rCL; break; 116219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Shl: OpReg = X86::SHL64rCL; break; 116319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return false; 116419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 116519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 116619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 116719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 116819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 116919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT VT; 117019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isTypeLegal(I->getType(), VT)) 117119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 117219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 117319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Op0Reg = getRegForValue(I->getOperand(0)); 117419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Op0Reg == 0) return false; 117519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 117619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Op1Reg = getRegForValue(I->getOperand(1)); 117719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Op1Reg == 0) return false; 117819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(TargetOpcode::COPY), 117919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CReg).addReg(Op1Reg); 118019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 118119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // The shift instruction uses X86::CL. If we defined a super-register 118219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // of X86::CL, emit a subreg KILL to precisely describe what we're doing here. 118319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CReg != X86::CL) 118419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 118519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(TargetOpcode::KILL), X86::CL) 118619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(CReg, RegState::Kill); 118719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 118819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = createResultReg(RC); 118919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(OpReg), ResultReg) 119019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(Op0Reg); 119119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg); 119219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 119319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 119419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 119519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectSelect(const Instruction *I) { 119619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT VT; 119719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isTypeLegal(I->getType(), VT)) 119819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 119919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 120019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // We only use cmov here, if we don't have a cmov instruction bail. 120119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!Subtarget->hasCMov()) return false; 120219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 120319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opc = 0; 120419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const TargetRegisterClass *RC = NULL; 120519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (VT == MVT::i16) { 120619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::CMOVE16rr; 120719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = &X86::GR16RegClass; 120819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (VT == MVT::i32) { 120919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::CMOVE32rr; 121019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = &X86::GR32RegClass; 121119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (VT == MVT::i64) { 121219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::CMOVE64rr; 121319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = &X86::GR64RegClass; 121419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 121519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 121619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 121719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 121819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Op0Reg = getRegForValue(I->getOperand(0)); 121919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Op0Reg == 0) return false; 122019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Op1Reg = getRegForValue(I->getOperand(1)); 122119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Op1Reg == 0) return false; 122219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Op2Reg = getRegForValue(I->getOperand(2)); 122319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Op2Reg == 0) return false; 122419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 122519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::TEST8rr)) 122619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(Op0Reg).addReg(Op0Reg); 122719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = createResultReg(RC); 122819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(Opc), ResultReg) 122919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(Op1Reg).addReg(Op2Reg); 123019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg); 123119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 123219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 123319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 123419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectFPExt(const Instruction *I) { 123519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // fpext from float to double. 123619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86ScalarSSEf64 && 123719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman I->getType()->isDoubleTy()) { 123819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *V = I->getOperand(0); 123919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (V->getType()->isFloatTy()) { 124019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned OpReg = getRegForValue(V); 124119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (OpReg == 0) return false; 124219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = createResultReg(X86::FR64RegisterClass); 124319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 124419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(X86::CVTSS2SDrr), ResultReg) 124519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(OpReg); 124619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg); 124719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 124819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 124919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 125019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 125119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 125219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 125319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 125419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectFPTrunc(const Instruction *I) { 125519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86ScalarSSEf64) { 125619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (I->getType()->isFloatTy()) { 125719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *V = I->getOperand(0); 125819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (V->getType()->isDoubleTy()) { 125919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned OpReg = getRegForValue(V); 126019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (OpReg == 0) return false; 126119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = createResultReg(X86::FR32RegisterClass); 126219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 126319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(X86::CVTSD2SSrr), ResultReg) 126419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(OpReg); 126519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg); 126619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 126719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 126819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 126919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 127019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 127119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 127219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 127319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 127419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectTrunc(const Instruction *I) { 127519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT SrcVT = TLI.getValueType(I->getOperand(0)->getType()); 127619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT DstVT = TLI.getValueType(I->getType()); 127719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 127819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // This code only handles truncation to byte. 127919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (DstVT != MVT::i8 && DstVT != MVT::i1) 128019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 128119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!TLI.isTypeLegal(SrcVT)) 128219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 128319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 128419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned InputReg = getRegForValue(I->getOperand(0)); 128519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!InputReg) 128619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Unhandled operand. Halt "fast" selection and bail. 128719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 128819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 128919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (SrcVT == MVT::i8) { 129019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Truncate from i8 to i1; no code needed. 129119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, InputReg); 129219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 129319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 129419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 129519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!Subtarget->is64Bit()) { 129619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If we're on x86-32; we can't extract an i8 from a general register. 129719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // First issue a copy to GR16_ABCD or GR32_ABCD. 129819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const TargetRegisterClass *CopyRC = (SrcVT == MVT::i16) 129919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ? X86::GR16_ABCDRegisterClass : X86::GR32_ABCDRegisterClass; 130019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned CopyReg = createResultReg(CopyRC); 130119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(TargetOpcode::COPY), 130219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CopyReg).addReg(InputReg); 130319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman InputReg = CopyReg; 130419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 130519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 130619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Issue an extract_subreg. 130719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = FastEmitInst_extractsubreg(MVT::i8, 130819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman InputReg, /*Kill=*/true, 130919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86::sub_8bit); 131019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!ResultReg) 131119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 131219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 131319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg); 131419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 131519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 131619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 131719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::IsMemcpySmall(uint64_t Len) { 131819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return Len <= (Subtarget->is64Bit() ? 32 : 16); 131919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 132019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 132119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::TryEmitSmallMemcpy(X86AddressMode DestAM, 132219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode SrcAM, uint64_t Len) { 132319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 132419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Make sure we don't bloat code by inlining very large memcpy's. 132519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!IsMemcpySmall(Len)) 132619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 132719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 132819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool i64Legal = Subtarget->is64Bit(); 132919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 133019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // We don't care about alignment here since we just emit integer accesses. 133119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman while (Len) { 133219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT VT; 133319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Len >= 8 && i64Legal) 133419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman VT = MVT::i64; 133519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else if (Len >= 4) 133619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman VT = MVT::i32; 133719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else if (Len >= 2) 133819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman VT = MVT::i16; 133919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else { 134019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(Len == 1); 134119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman VT = MVT::i8; 134219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 134319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 134419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Reg; 134519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool RV = X86FastEmitLoad(VT, SrcAM, Reg); 134619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RV &= X86FastEmitStore(VT, Reg, DestAM); 134719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(RV && "Failed to emit load or store??"); 134819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 134919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Size = VT.getSizeInBits()/8; 135019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Len -= Size; 135119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman DestAM.Disp += Size; 135219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SrcAM.Disp += Size; 135319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 135419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 135519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 135619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 135719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 135819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86VisitIntrinsicCall(const IntrinsicInst &I) { 135919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // FIXME: Handle more intrinsics. 136019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (I.getIntrinsicID()) { 136119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return false; 136219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Intrinsic::memcpy: { 136319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const MemCpyInst &MCI = cast<MemCpyInst>(I); 136419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Don't handle volatile or variable length memcpys. 136519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (MCI.isVolatile()) 136619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 136719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 136819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (isa<ConstantInt>(MCI.getLength())) { 136919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Small memcpy's are common enough that we want to do them 137019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // without a call if possible. 137119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman uint64_t Len = cast<ConstantInt>(MCI.getLength())->getZExtValue(); 137219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (IsMemcpySmall(Len)) { 137319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode DestAM, SrcAM; 137419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86SelectAddress(MCI.getRawDest(), DestAM) || 137519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman !X86SelectAddress(MCI.getRawSource(), SrcAM)) 137619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 137719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TryEmitSmallMemcpy(DestAM, SrcAM, Len); 137819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 137919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 138019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 138119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 138219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned SizeWidth = Subtarget->is64Bit() ? 64 : 32; 138319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!MCI.getLength()->getType()->isIntegerTy(SizeWidth)) 138419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 138519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 138619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (MCI.getSourceAddressSpace() > 255 || MCI.getDestAddressSpace() > 255) 138719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 138819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 138919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return DoSelectCall(&I, "memcpy"); 139019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 139119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Intrinsic::memset: { 139219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const MemSetInst &MSI = cast<MemSetInst>(I); 139319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 139419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (MSI.isVolatile()) 139519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 139619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 139719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned SizeWidth = Subtarget->is64Bit() ? 64 : 32; 139819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!MSI.getLength()->getType()->isIntegerTy(SizeWidth)) 139919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 140019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 140119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (MSI.getDestAddressSpace() > 255) 140219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 140319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 140419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return DoSelectCall(&I, "memset"); 140519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 140619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Intrinsic::stackprotector: { 140719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Emit code inline code to store the stack guard onto the stack. 140819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT PtrTy = TLI.getPointerTy(); 140919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 141019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *Op1 = I.getArgOperand(0); // The guard's value. 141119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const AllocaInst *Slot = cast<AllocaInst>(I.getArgOperand(1)); 141219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 141319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Grab the frame index. 141419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode AM; 141519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86SelectAddress(Slot, AM)) return false; 141619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86FastEmitStore(PtrTy, Op1, AM)) return false; 141719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 141819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 141919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Intrinsic::dbg_declare: { 142019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const DbgDeclareInst *DI = cast<DbgDeclareInst>(&I); 142119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode AM; 142219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(DI->getAddress() && "Null address should be checked earlier!"); 142319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86SelectAddress(DI->getAddress(), AM)) 142419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 142519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const MCInstrDesc &II = TII.get(TargetOpcode::DBG_VALUE); 142619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // FIXME may need to add RegState::Debug to any registers produced, 142719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // although ESP/EBP should be the only ones at the moment. 142819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addFullAddress(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II), AM). 142919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addImm(0).addMetadata(DI->getVariable()); 143019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 143119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 143219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Intrinsic::trap: { 143319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::TRAP)); 143419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 143519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 143619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Intrinsic::sadd_with_overflow: 143719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Intrinsic::uadd_with_overflow: { 143819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // FIXME: Should fold immediates. 143919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 144019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Replace "add with overflow" intrinsics with an "add" instruction followed 144119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // by a seto/setc instruction. 144219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Function *Callee = I.getCalledFunction(); 144319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Type *RetTy = 144419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman cast<StructType>(Callee->getReturnType())->getTypeAtIndex(unsigned(0)); 144519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 144619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT VT; 144719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isTypeLegal(RetTy, VT)) 144819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 144919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 145019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *Op1 = I.getArgOperand(0); 145119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *Op2 = I.getArgOperand(1); 145219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Reg1 = getRegForValue(Op1); 145319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Reg2 = getRegForValue(Op2); 145419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 145519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Reg1 == 0 || Reg2 == 0) 145619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // FIXME: Handle values *not* in registers. 145719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 145819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 145919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned OpC = 0; 146019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (VT == MVT::i32) 146119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman OpC = X86::ADD32rr; 146219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else if (VT == MVT::i64) 146319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman OpC = X86::ADD64rr; 146419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else 146519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 146619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 146719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // The call to CreateRegs builds two sequential registers, to store the 146819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // both the the returned values. 146919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = FuncInfo.CreateRegs(I.getType()); 147019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(OpC), ResultReg) 147119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(Reg1).addReg(Reg2); 147219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 147319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opc = X86::SETBr; 147419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (I.getIntrinsicID() == Intrinsic::sadd_with_overflow) 147519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::SETOr; 147619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(Opc), ResultReg+1); 147719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 147819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(&I, ResultReg, 2); 147919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 148019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 148119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 148219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 148319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 148419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::X86SelectCall(const Instruction *I) { 148519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const CallInst *CI = cast<CallInst>(I); 148619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *Callee = CI->getCalledValue(); 148719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 148819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Can't handle inline asm yet. 148919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (isa<InlineAsm>(Callee)) 149019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 149119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 149219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Handle intrinsic calls. 149319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (const IntrinsicInst *II = dyn_cast<IntrinsicInst>(CI)) 149419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86VisitIntrinsicCall(*II); 149519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 149619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return DoSelectCall(I, 0); 149719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 149819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 149919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman// Select either a call, or an llvm.memcpy/memmove/memset intrinsic 150019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::DoSelectCall(const Instruction *I, const char *MemIntName) { 150119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const CallInst *CI = cast<CallInst>(I); 150219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *Callee = CI->getCalledValue(); 150319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 150419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Handle only C and fastcc calling conventions for now. 150519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ImmutableCallSite CS(CI); 150619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CallingConv::ID CC = CS.getCallingConv(); 150719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CC != CallingConv::C && CC != CallingConv::Fast && 150819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CC != CallingConv::X86_FastCall) 150919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 151019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 151119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // fastcc with -tailcallopt is intended to provide a guaranteed 151219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // tail call optimization. Fastisel doesn't know how to do that. 151319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CC == CallingConv::Fast && GuaranteedTailCallOpt) 151419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 151519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 151619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman PointerType *PT = cast<PointerType>(CS.getCalledValue()->getType()); 151719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FunctionType *FTy = cast<FunctionType>(PT->getElementType()); 151819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool isVarArg = FTy->isVarArg(); 151919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 152019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Don't know how to handle Win64 varargs yet. Nothing special needed for 152119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // x86-32. Special handling for x86-64 is implemented. 152219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (isVarArg && Subtarget->isTargetWin64()) 152319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 152419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 152519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Fast-isel doesn't know about callee-pop yet. 152619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86::isCalleePop(CC, Subtarget->is64Bit(), isVarArg, 152719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman GuaranteedTailCallOpt)) 152819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 152919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 153019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Check whether the function can return without sret-demotion. 153119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<ISD::OutputArg, 4> Outs; 153219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<uint64_t, 4> Offsets; 153319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman GetReturnInfo(I->getType(), CS.getAttributes().getRetAttributes(), 153419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Outs, TLI, &Offsets); 153519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool CanLowerReturn = TLI.CanLowerReturn(CS.getCallingConv(), 153619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman *FuncInfo.MF, FTy->isVarArg(), 153719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Outs, FTy->getContext()); 153819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!CanLowerReturn) 153919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 154019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 154119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Materialize callee address in a register. FIXME: GV address can be 154219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // handled with a CALLpcrel32 instead. 154319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode CalleeAM; 154419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86SelectCallAddress(Callee, CalleeAM)) 154519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 154619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned CalleeOp = 0; 154719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const GlobalValue *GV = 0; 154819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CalleeAM.GV != 0) { 154919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman GV = CalleeAM.GV; 155019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (CalleeAM.Base.Reg != 0) { 155119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CalleeOp = CalleeAM.Base.Reg; 155219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else 155319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 155419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 155519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Deal with call operands first. 155619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<const Value *, 8> ArgVals; 155719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<unsigned, 8> Args; 155819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<MVT, 8> ArgVTs; 155919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<ISD::ArgFlagsTy, 8> ArgFlags; 156019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Args.reserve(CS.arg_size()); 156119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVals.reserve(CS.arg_size()); 156219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVTs.reserve(CS.arg_size()); 156319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgFlags.reserve(CS.arg_size()); 156419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman for (ImmutableCallSite::arg_iterator i = CS.arg_begin(), e = CS.arg_end(); 156519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman i != e; ++i) { 156619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If we're lowering a mem intrinsic instead of a regular call, skip the 156719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // last two arguments, which should not passed to the underlying functions. 156819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (MemIntName && e-i <= 2) 156919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 157019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Value *ArgVal = *i; 157119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ISD::ArgFlagsTy Flags; 157219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned AttrInd = i - CS.arg_begin() + 1; 157319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CS.paramHasAttr(AttrInd, Attribute::SExt)) 157419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Flags.setSExt(); 157519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CS.paramHasAttr(AttrInd, Attribute::ZExt)) 157619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Flags.setZExt(); 157719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 157819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CS.paramHasAttr(AttrInd, Attribute::ByVal)) { 157919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman PointerType *Ty = cast<PointerType>(ArgVal->getType()); 158019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Type *ElementTy = Ty->getElementType(); 158119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned FrameSize = TD.getTypeAllocSize(ElementTy); 158219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned FrameAlign = CS.getParamAlignment(AttrInd); 158319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!FrameAlign) 158419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FrameAlign = TLI.getByValTypeAlignment(ElementTy); 158519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Flags.setByVal(); 158619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Flags.setByValSize(FrameSize); 158719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Flags.setByValAlign(FrameAlign); 158819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!IsMemcpySmall(FrameSize)) 158919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 159019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 159119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 159219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CS.paramHasAttr(AttrInd, Attribute::InReg)) 159319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Flags.setInReg(); 159419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CS.paramHasAttr(AttrInd, Attribute::Nest)) 159519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Flags.setNest(); 159619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 159719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If this is an i1/i8/i16 argument, promote to i32 to avoid an extra 159819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // instruction. This is safe because it is common to all fastisel supported 159919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // calling conventions on x86. 160019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (ConstantInt *CI = dyn_cast<ConstantInt>(ArgVal)) { 160119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CI->getBitWidth() == 1 || CI->getBitWidth() == 8 || 160219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CI->getBitWidth() == 16) { 160319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Flags.isSExt()) 160419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVal = ConstantExpr::getSExt(CI,Type::getInt32Ty(CI->getContext())); 160519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else 160619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVal = ConstantExpr::getZExt(CI,Type::getInt32Ty(CI->getContext())); 160719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 160819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 160919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 161019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ArgReg; 161119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 161219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Passing bools around ends up doing a trunc to i1 and passing it. 161319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Codegen this as an argument + "and 1". 161419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (ArgVal->getType()->isIntegerTy(1) && isa<TruncInst>(ArgVal) && 161519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman cast<TruncInst>(ArgVal)->getParent() == I->getParent() && 161619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVal->hasOneUse()) { 161719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVal = cast<TruncInst>(ArgVal)->getOperand(0); 161819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgReg = getRegForValue(ArgVal); 161919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (ArgReg == 0) return false; 162019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 162119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT ArgVT; 162219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isTypeLegal(ArgVal->getType(), ArgVT)) return false; 162319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 162419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgReg = FastEmit_ri(ArgVT, ArgVT, ISD::AND, ArgReg, 162519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVal->hasOneUse(), 1); 162619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 162719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgReg = getRegForValue(ArgVal); 162819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 162919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 163019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (ArgReg == 0) return false; 163119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 163219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Type *ArgTy = ArgVal->getType(); 163319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT ArgVT; 163419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isTypeLegal(ArgTy, ArgVT)) 163519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 163619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (ArgVT == MVT::x86mmx) 163719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 163819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned OriginalAlignment = TD.getABITypeAlignment(ArgTy); 163919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Flags.setOrigAlign(OriginalAlignment); 164019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 164119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Args.push_back(ArgReg); 164219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVals.push_back(ArgVal); 164319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVTs.push_back(ArgVT); 164419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgFlags.push_back(Flags); 164519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 164619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 164719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Analyze operands of the call, assigning locations to each operand. 164819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<CCValAssign, 16> ArgLocs; 164919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CCState CCInfo(CC, isVarArg, *FuncInfo.MF, TM, ArgLocs, 165019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman I->getParent()->getContext()); 165119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 165219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Allocate shadow area for Win64 165319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isTargetWin64()) 165419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CCInfo.AllocateStack(32, 8); 165519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 165619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CCInfo.AnalyzeCallOperands(ArgVTs, ArgFlags, CC_X86); 165719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 165819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Get a count of how many bytes are to be pushed on the stack. 165919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned NumBytes = CCInfo.getNextStackOffset(); 166019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 166119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Issue CALLSEQ_START 166219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned AdjStackDown = TII.getCallFrameSetupOpcode(); 166319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(AdjStackDown)) 166419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addImm(NumBytes); 166519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 166619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Process argument: walk the register/memloc assignments, inserting 166719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // copies / loads. 166819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<unsigned, 4> RegArgs; 166919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) { 167019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CCValAssign &VA = ArgLocs[i]; 167119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Arg = Args[VA.getValNo()]; 167219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT ArgVT = ArgVTs[VA.getValNo()]; 167319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 167419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Promote the value if needed. 167519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (VA.getLocInfo()) { 167619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: llvm_unreachable("Unknown loc info!"); 167719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CCValAssign::Full: break; 167819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CCValAssign::SExt: { 167919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(VA.getLocVT().isInteger() && !VA.getLocVT().isVector() && 168019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman "Unexpected extend"); 168119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool Emitted = X86FastEmitExtend(ISD::SIGN_EXTEND, VA.getLocVT(), 168219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Arg, ArgVT, Arg); 168319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(Emitted && "Failed to emit a sext!"); (void)Emitted; 168419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVT = VA.getLocVT(); 168519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 168619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 168719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CCValAssign::ZExt: { 168819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(VA.getLocVT().isInteger() && !VA.getLocVT().isVector() && 168919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman "Unexpected extend"); 169019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool Emitted = X86FastEmitExtend(ISD::ZERO_EXTEND, VA.getLocVT(), 169119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Arg, ArgVT, Arg); 169219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(Emitted && "Failed to emit a zext!"); (void)Emitted; 169319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVT = VA.getLocVT(); 169419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 169519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 169619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CCValAssign::AExt: { 169719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(VA.getLocVT().isInteger() && !VA.getLocVT().isVector() && 169819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman "Unexpected extend"); 169919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool Emitted = X86FastEmitExtend(ISD::ANY_EXTEND, VA.getLocVT(), 170019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Arg, ArgVT, Arg); 170119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!Emitted) 170219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Emitted = X86FastEmitExtend(ISD::ZERO_EXTEND, VA.getLocVT(), 170319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Arg, ArgVT, Arg); 170419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!Emitted) 170519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Emitted = X86FastEmitExtend(ISD::SIGN_EXTEND, VA.getLocVT(), 170619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Arg, ArgVT, Arg); 170719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 170819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(Emitted && "Failed to emit a aext!"); (void)Emitted; 170919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVT = VA.getLocVT(); 171019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 171119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 171219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case CCValAssign::BCvt: { 171319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned BC = FastEmit_r(ArgVT.getSimpleVT(), VA.getLocVT(), 171419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ISD::BITCAST, Arg, /*TODO: Kill=*/false); 171519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(BC != 0 && "Failed to emit a bitcast!"); 171619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Arg = BC; 171719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ArgVT = VA.getLocVT(); 171819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 171919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 172019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 172119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 172219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (VA.isRegLoc()) { 172319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(TargetOpcode::COPY), 172419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman VA.getLocReg()).addReg(Arg); 172519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RegArgs.push_back(VA.getLocReg()); 172619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 172719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned LocMemOffset = VA.getLocMemOffset(); 172819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode AM; 172919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Base.Reg = StackPtr; 173019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.Disp = LocMemOffset; 173119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const Value *ArgVal = ArgVals[VA.getValNo()]; 173219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ISD::ArgFlagsTy Flags = ArgFlags[VA.getValNo()]; 173319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 173419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Flags.isByVal()) { 173519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode SrcAM; 173619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SrcAM.Base.Reg = Arg; 173719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman bool Res = TryEmitSmallMemcpy(AM, SrcAM, Flags.getByValSize()); 173819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(Res && "memcpy length already checked!"); (void)Res; 173919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (isa<ConstantInt>(ArgVal) || isa<ConstantPointerNull>(ArgVal)) { 174019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If this is a really simple value, emit this with the Value* version 174119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // of X86FastEmitStore. If it isn't simple, we don't want to do this, 174219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // as it can cause us to reevaluate the argument. 174319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86FastEmitStore(ArgVT, ArgVal, AM); 174419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 174519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86FastEmitStore(ArgVT, Arg, AM); 174619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 174719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 174819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 174919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 175019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // ELF / PIC requires GOT in the EBX register before function calls via PLT 175119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // GOT pointer. 175219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isPICStyleGOT()) { 175319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Base = getInstrInfo()->getGlobalBaseReg(FuncInfo.MF); 175419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(TargetOpcode::COPY), 175519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86::EBX).addReg(Base); 175619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 175719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 175819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->is64Bit() && isVarArg && !Subtarget->isTargetWin64()) { 175919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Count the number of XMM registers allocated. 176019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman static const unsigned XMMArgRegs[] = { 176119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86::XMM0, X86::XMM1, X86::XMM2, X86::XMM3, 176219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86::XMM4, X86::XMM5, X86::XMM6, X86::XMM7 176319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman }; 176419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned NumXMMRegs = CCInfo.getFirstUnallocated(XMMArgRegs, 8); 176519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::MOV8ri), 176619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86::AL).addImm(NumXMMRegs); 176719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 176819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 176919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Issue the call. 177019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MachineInstrBuilder MIB; 177119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CalleeOp) { 177219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Register-indirect call. 177319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned CallOpc; 177419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isTargetWin64()) 177519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CallOpc = X86::WINCALL64r; 177619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else if (Subtarget->is64Bit()) 177719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CallOpc = X86::CALL64r; 177819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else 177919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CallOpc = X86::CALL32r; 178019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(CallOpc)) 178119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(CalleeOp); 178219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 178319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 178419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Direct call. 178519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman assert(GV && "Not a direct call"); 178619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned CallOpc; 178719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isTargetWin64()) 178819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CallOpc = X86::WINCALL64pcrel32; 178919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else if (Subtarget->is64Bit()) 179019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CallOpc = X86::CALL64pcrel32; 179119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else 179219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CallOpc = X86::CALLpcrel32; 179319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 179419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // See if we need any target-specific flags on the GV operand. 179519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned char OpFlags = 0; 179619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 179719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // On ELF targets, in both X86-64 and X86-32 mode, direct calls to 179819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // external symbols most go through the PLT in PIC mode. If the symbol 179919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // has hidden or protected visibility, or if it is static or local, then 180019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // we don't need to use the PLT - we can directly call it. 180119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isTargetELF() && 180219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TM.getRelocationModel() == Reloc::PIC_ && 180319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman GV->hasDefaultVisibility() && !GV->hasLocalLinkage()) { 180419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman OpFlags = X86II::MO_PLT; 180519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (Subtarget->isPICStyleStubAny() && 180619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman (GV->isDeclaration() || GV->isWeakForLinker()) && 180719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman (!Subtarget->getTargetTriple().isMacOSX() || 180819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Subtarget->getTargetTriple().isMacOSXVersionLT(10, 5))) { 180919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // PC-relative references to external symbols should go through $stub, 181019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // unless we're building with the leopard linker or later, which 181119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // automatically synthesizes these stubs. 181219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman OpFlags = X86II::MO_DARWIN_STUB; 181319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 181419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 181519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 181619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(CallOpc)); 181719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (MemIntName) 181819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MIB.addExternalSymbol(MemIntName, OpFlags); 181919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman else 182019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MIB.addGlobalAddress(GV, 0, OpFlags); 182119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 182219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 182319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Add an implicit use GOT pointer in EBX. 182419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isPICStyleGOT()) 182519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MIB.addReg(X86::EBX); 182619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 182719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->is64Bit() && isVarArg && !Subtarget->isTargetWin64()) 182819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MIB.addReg(X86::AL); 182919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 183019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Add implicit physical register uses to the call. 183119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman for (unsigned i = 0, e = RegArgs.size(); i != e; ++i) 183219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MIB.addReg(RegArgs[i]); 183319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 183419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Issue CALLSEQ_END 183519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned AdjStackUp = TII.getCallFrameDestroyOpcode(); 183619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned NumBytesCallee = 0; 183719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!Subtarget->is64Bit() && CS.paramHasAttr(1, Attribute::StructRet)) 183819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman NumBytesCallee = 4; 183919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(AdjStackUp)) 184019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addImm(NumBytes).addImm(NumBytesCallee); 184119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 184219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Build info for return calling conv lowering code. 184319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // FIXME: This is practically a copy-paste from TargetLowering::LowerCallTo. 184419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<ISD::InputArg, 32> Ins; 184519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<EVT, 4> RetTys; 184619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ComputeValueVTs(TLI, I->getType(), RetTys); 184719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman for (unsigned i = 0, e = RetTys.size(); i != e; ++i) { 184819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT VT = RetTys[i]; 184919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT RegisterVT = TLI.getRegisterType(I->getParent()->getContext(), VT); 185019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned NumRegs = TLI.getNumRegisters(I->getParent()->getContext(), VT); 185119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman for (unsigned j = 0; j != NumRegs; ++j) { 185219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman ISD::InputArg MyFlags; 185319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MyFlags.VT = RegisterVT.getSimpleVT(); 185419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MyFlags.Used = !CS.getInstruction()->use_empty(); 185519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CS.paramHasAttr(0, Attribute::SExt)) 185619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MyFlags.Flags.setSExt(); 185719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CS.paramHasAttr(0, Attribute::ZExt)) 185819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MyFlags.Flags.setZExt(); 185919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CS.paramHasAttr(0, Attribute::InReg)) 186019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MyFlags.Flags.setInReg(); 186119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Ins.push_back(MyFlags); 186219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 186319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 186419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 186519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Now handle call return values. 186619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<unsigned, 4> UsedRegs; 186719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<CCValAssign, 16> RVLocs; 186819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CCState CCRetInfo(CC, false, *FuncInfo.MF, TM, RVLocs, 186919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman I->getParent()->getContext()); 187019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = FuncInfo.CreateRegs(I->getType()); 187119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CCRetInfo.AnalyzeCallResult(Ins, RetCC_X86); 187219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman for (unsigned i = 0; i != RVLocs.size(); ++i) { 187319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT CopyVT = RVLocs[i].getValVT(); 187419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned CopyReg = ResultReg + i; 187519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 187619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If this is a call to a function that returns an fp value on the x87 fp 187719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // stack, but where we prefer to use the value in xmm registers, copy it 187819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // out as F80 and use a truncate to move it from fp stack reg to xmm reg. 187919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if ((RVLocs[i].getLocReg() == X86::ST0 || 188019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RVLocs[i].getLocReg() == X86::ST1)) { 188119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (isScalarFPTypeInSSEReg(RVLocs[i].getValVT())) { 188219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CopyVT = MVT::f80; 188319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CopyReg = createResultReg(X86::RFP80RegisterClass); 188419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 188519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(X86::FpPOP_RETVAL), 188619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CopyReg); 188719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 188819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(TargetOpcode::COPY), 188919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman CopyReg).addReg(RVLocs[i].getLocReg()); 189019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UsedRegs.push_back(RVLocs[i].getLocReg()); 189119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 189219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 189319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (CopyVT != RVLocs[i].getValVT()) { 189419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Round the F80 the right size, which also moves to the appropriate xmm 189519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // register. This is accomplished by storing the F80 value in memory and 189619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // then loading it back. Ewww... 189719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT ResVT = RVLocs[i].getValVT(); 189819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opc = ResVT == MVT::f32 ? X86::ST_Fp80m32 : X86::ST_Fp80m64; 189919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned MemSize = ResVT.getSizeInBits()/8; 190019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman int FI = MFI.CreateStackObject(MemSize, MemSize, false); 190119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addFrameReference(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 190219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(Opc)), FI) 190319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman .addReg(CopyReg); 190419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = ResVT == MVT::f32 ? X86::MOVSSrm : X86::MOVSDrm; 190519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addFrameReference(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 190619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(Opc), ResultReg + i), FI); 190719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 190819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 190919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 191019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (RVLocs.size()) 191119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, ResultReg, RVLocs.size()); 191219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 191319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Set all unused physreg defs as dead. 191419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman static_cast<MachineInstr *>(MIB)->setPhysRegsDeadExcept(UsedRegs, TRI); 191519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 191619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 191719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 191819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 191919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 192019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool 192119bac1e08be200c31efd26f0f5fd144c9b3eefd3John BaumanX86FastISel::TargetSelectInstruction(const Instruction *I) { 192219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (I->getOpcode()) { 192319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: break; 192419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Load: 192519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectLoad(I); 192619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Store: 192719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectStore(I); 192819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Ret: 192919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectRet(I); 193019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::ICmp: 193119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::FCmp: 193219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectCmp(I); 193319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::ZExt: 193419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectZExt(I); 193519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Br: 193619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectBranch(I); 193719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Call: 193819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectCall(I); 193919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::LShr: 194019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::AShr: 194119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Shl: 194219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectShift(I); 194319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Select: 194419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectSelect(I); 194519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::Trunc: 194619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectTrunc(I); 194719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::FPExt: 194819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectFPExt(I); 194919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::FPTrunc: 195019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectFPTrunc(I); 195119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::IntToPtr: // Deliberate fall-through. 195219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case Instruction::PtrToInt: { 195319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT SrcVT = TLI.getValueType(I->getOperand(0)->getType()); 195419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman EVT DstVT = TLI.getValueType(I->getType()); 195519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (DstVT.bitsGT(SrcVT)) 195619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectZExt(I); 195719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (DstVT.bitsLT(SrcVT)) 195819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return X86SelectTrunc(I); 195919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Reg = getRegForValue(I->getOperand(0)); 196019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Reg == 0) return false; 196119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman UpdateValueMap(I, Reg); 196219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 196319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 196419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 196519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 196619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 196719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 196819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 196919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanunsigned X86FastISel::TargetMaterializeConstant(const Constant *C) { 197019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT VT; 197119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isTypeLegal(C->getType(), VT)) 197219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 197319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 197419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Get opcode and regclass of the output for the given load instruction. 197519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opc = 0; 197619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const TargetRegisterClass *RC = NULL; 197719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (VT.SimpleTy) { 197819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return false; 197919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i8: 198019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV8rm; 198119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::GR8RegisterClass; 198219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 198319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i16: 198419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV16rm; 198519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::GR16RegisterClass; 198619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 198719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i32: 198819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV32rm; 198919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::GR32RegisterClass; 199019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 199119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::i64: 199219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Must be in x86-64 mode. 199319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::MOV64rm; 199419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::GR64RegisterClass; 199519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 199619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f32: 199719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86ScalarSSEf32) { 199819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = Subtarget->hasAVX() ? X86::VMOVSSrm : X86::MOVSSrm; 199919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::FR32RegisterClass; 200019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 200119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::LD_Fp32m; 200219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::RFP32RegisterClass; 200319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 200419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 200519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f64: 200619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86ScalarSSEf64) { 200719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = Subtarget->hasAVX() ? X86::VMOVSDrm : X86::MOVSDrm; 200819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::FR64RegisterClass; 200919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 201019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::LD_Fp64m; 201119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::RFP64RegisterClass; 201219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 201319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 201419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f80: 201519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // No f80 support yet. 201619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 201719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 201819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 201919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Materialize addresses with LEA instructions. 202019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (isa<GlobalValue>(C)) { 202119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode AM; 202219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86SelectAddress(C, AM)) { 202319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // If the expression is just a basereg, then we're done, otherwise we need 202419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // to emit an LEA. 202519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (AM.BaseType == X86AddressMode::RegBase && 202619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.IndexReg == 0 && AM.Disp == 0 && AM.GV == 0) 202719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return AM.Base.Reg; 202819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 202919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = TLI.getPointerTy() == MVT::i32 ? X86::LEA32r : X86::LEA64r; 203019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = createResultReg(RC); 203119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addFullAddress(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 203219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(Opc), ResultReg), AM); 203319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return ResultReg; 203419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 203519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return 0; 203619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 203719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 203819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // MachineConstantPool wants an explicit alignment. 203919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Align = TD.getPrefTypeAlignment(C->getType()); 204019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Align == 0) { 204119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Alignment of vector types. FIXME! 204219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Align = TD.getTypeAllocSize(C->getType()); 204319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 204419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 204519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // x86-32 PIC requires a PIC base register for constant pools. 204619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned PICBase = 0; 204719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned char OpFlag = 0; 204819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Subtarget->isPICStyleStubPIC()) { // Not dynamic-no-pic 204919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman OpFlag = X86II::MO_PIC_BASE_OFFSET; 205019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman PICBase = getInstrInfo()->getGlobalBaseReg(FuncInfo.MF); 205119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (Subtarget->isPICStyleGOT()) { 205219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman OpFlag = X86II::MO_GOTOFF; 205319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman PICBase = getInstrInfo()->getGlobalBaseReg(FuncInfo.MF); 205419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else if (Subtarget->isPICStyleRIPRel() && 205519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TM.getCodeModel() == CodeModel::Small) { 205619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman PICBase = X86::RIP; 205719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 205819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 205919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Create the load from the constant pool. 206019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned MCPOffset = MCP.getConstantPoolIndex(C, Align); 206119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = createResultReg(RC); 206219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addConstantPoolReference(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 206319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(Opc), ResultReg), 206419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MCPOffset, PICBase, OpFlag); 206519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 206619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return ResultReg; 206719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 206819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 206919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanunsigned X86FastISel::TargetMaterializeAlloca(const AllocaInst *C) { 207019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Fail on dynamic allocas. At this point, getRegForValue has already 207119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // checked its CSE maps, so if we're here trying to handle a dynamic 207219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // alloca, we're not going to succeed. X86SelectAddress has a 207319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // check for dynamic allocas, because it's called directly from 207419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // various places, but TargetMaterializeAlloca also needs a check 207519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // in order to avoid recursion between getRegForValue, 207619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // X86SelectAddrss, and TargetMaterializeAlloca. 207719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!FuncInfo.StaticAllocaMap.count(C)) 207819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return 0; 207919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 208019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode AM; 208119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86SelectAddress(C, AM)) 208219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return 0; 208319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opc = Subtarget->is64Bit() ? X86::LEA64r : X86::LEA32r; 208419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TargetRegisterClass* RC = TLI.getRegClassFor(TLI.getPointerTy()); 208519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = createResultReg(RC); 208619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman addFullAddress(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, 208719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman TII.get(Opc), ResultReg), AM); 208819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return ResultReg; 208919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 209019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 209119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanunsigned X86FastISel::TargetMaterializeFloatZero(const ConstantFP *CF) { 209219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MVT VT; 209319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!isTypeLegal(CF->getType(), VT)) 209419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 209519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 209619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // Get opcode and regclass for the given zero. 209719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Opc = 0; 209819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const TargetRegisterClass *RC = NULL; 209919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman switch (VT.SimpleTy) { 210019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman default: return false; 210119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f32: 210219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86ScalarSSEf32) { 210319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::FsFLD0SS; 210419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::FR32RegisterClass; 210519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 210619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::LD_Fp032; 210719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::RFP32RegisterClass; 210819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 210919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 211019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f64: 211119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (X86ScalarSSEf64) { 211219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::FsFLD0SD; 211319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::FR64RegisterClass; 211419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } else { 211519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman Opc = X86::LD_Fp064; 211619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman RC = X86::RFP64RegisterClass; 211719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 211819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman break; 211919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman case MVT::f80: 212019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman // No f80 support yet. 212119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 212219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 212319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 212419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned ResultReg = createResultReg(RC); 212519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(Opc), ResultReg); 212619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return ResultReg; 212719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 212819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 212919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 213019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// TryToFoldLoad - The specified machine instr operand is a vreg, and that 213119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// vreg is being provided by the specified load instruction. If possible, 213219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// try to fold the load as an operand to the instruction, returning true if 213319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman/// possible. 213419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumanbool X86FastISel::TryToFoldLoad(MachineInstr *MI, unsigned OpNo, 213519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman const LoadInst *LI) { 213619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86AddressMode AM; 213719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (!X86SelectAddress(LI->getOperand(0), AM)) 213819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return false; 213919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 214019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman X86InstrInfo &XII = (X86InstrInfo&)TII; 214119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 214219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Size = TD.getTypeAllocSize(LI->getType()); 214319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman unsigned Alignment = LI->getAlignment(); 214419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 214519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman SmallVector<MachineOperand, 8> AddrOps; 214619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman AM.getFullAddress(AddrOps); 214719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 214819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MachineInstr *Result = 214919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman XII.foldMemoryOperandImpl(*FuncInfo.MF, MI, OpNo, AddrOps, Size, Alignment); 215019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman if (Result == 0) return false; 215119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 215219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman FuncInfo.MBB->insert(FuncInfo.InsertPt, Result); 215319bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman MI->eraseFromParent(); 215419bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return true; 215519bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 215619bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 215719bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman 215819bac1e08be200c31efd26f0f5fd144c9b3eefd3John Baumannamespace llvm { 215919bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman llvm::FastISel *X86::createFastISel(FunctionLoweringInfo &funcInfo) { 216019bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman return new X86FastISel(funcInfo); 216119bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman } 216219bac1e08be200c31efd26f0f5fd144c9b3eefd3John Bauman} 2163