SelectionDAG.h revision 24446e253a17720f6462288255ab5ebd13b8491f
1c3aae25116e66c177579b0b79182b09340b19753Chris Lattner//===-- llvm/CodeGen/SelectionDAG.h - InstSelection DAG ---------*- C++ -*-===// 2ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 36fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// The LLVM Compiler Infrastructure 46fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 56fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// This file was developed by the LLVM research group and is distributed under 66fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// the University of Illinois Open Source License. See LICENSE.TXT for details. 7ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 86fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell//===----------------------------------------------------------------------===// 9ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 10c3aae25116e66c177579b0b79182b09340b19753Chris Lattner// This file declares the SelectionDAG class, and transitively defines the 11c3aae25116e66c177579b0b79182b09340b19753Chris Lattner// SDNode class and subclasses. 12ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 13cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner//===----------------------------------------------------------------------===// 14cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 15cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#ifndef LLVM_CODEGEN_SELECTIONDAG_H 16cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#define LLVM_CODEGEN_SELECTIONDAG_H 17cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 18a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner#include "llvm/CodeGen/SelectionDAGCSEMap.h" 19b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner#include "llvm/ADT/ilist" 20b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 21109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner#include <list> 225892d47a625638a90afeb31dd4f6f80a2f9bacdeChris Lattner#include <vector> 23322812e603705e1c2037313633e72f689524b163Evan Cheng#include <map> 24322812e603705e1c2037313633e72f689524b163Evan Cheng#include <set> 25eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner#include <string> 26d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 27d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 28c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class TargetLowering; 29c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class TargetMachine; 30b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey class MachineDebugInfo; 31c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class MachineFunction; 32d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng class MachineConstantPoolValue; 33c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 34c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// SelectionDAG class - This is used to represent a portion of an LLVM function 35c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// in a low-level Data Dependence DAG representation suitable for instruction 36c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection. This DAG is constructed as the first step of instruction 37c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection in order to allow implementation of machine specific optimizations 38c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// and code simplifications. 39c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// 40c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// The representation used by the SelectionDAG is a target-independent 41c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// representation, which has some similarities to the GCC RTL representation, 42c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// but is significantly more simple, powerful, and is a graph form instead of a 43c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// linear form. 44cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner/// 45cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerclass SelectionDAG { 46063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &TLI; 47c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &MF; 48b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey MachineDebugInfo *DI; 49cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 50213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// Root - The root of the entire DAG. EntryNode - The starting token. 51c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand Root, EntryNode; 52cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 53213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// AllNodes - A linked list of nodes in the current DAG. 54b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner ilist<SDNode> AllNodes; 55691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 56213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSEMap - This structure is used to memoize nodes, automatically performing 57213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSE with existing nodes with a duplicate is requested. 58213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner SelectionDAGCSEMap CSEMap; 59213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner 60cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerpublic: 61b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey SelectionDAG(TargetLowering &tli, MachineFunction &mf, MachineDebugInfo *di) 62b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey : TLI(tli), MF(mf), DI(di) { 63c3aae25116e66c177579b0b79182b09340b19753Chris Lattner EntryNode = Root = getNode(ISD::EntryToken, MVT::Other); 64c3aae25116e66c177579b0b79182b09340b19753Chris Lattner } 65cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner ~SelectionDAG(); 66cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 67c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &getMachineFunction() const { return MF; } 68063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner const TargetMachine &getTarget() const; 69063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &getTargetLoweringInfo() const { return TLI; } 70b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey MachineDebugInfo *getMachineDebugInfo() const { return DI; } 71cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 72ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// viewGraph - Pop up a GraphViz/gv window with the DAG rendered using 'dot'. 731080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner /// 741080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner void viewGraph(); 75ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 76ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#ifndef NDEBUG 77ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey std::map<const SDNode *, std::string> NodeGraphAttrs; 78ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#endif 791080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 80ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// clearGraphAttrs - Clear all previously defined node graph attributes. 81ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Intended to be used from a debugging tool (eg. gdb). 82ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void clearGraphAttrs(); 83ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 84ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".) 85ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 86ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphAttrs(const SDNode *N, const char *Attrs); 87ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 88ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".) 89ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Used from getNodeAttributes. 90ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey const std::string getGraphAttrs(const SDNode *N) const; 91ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 92ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphColor - Convenience for setting node color attribute. 93ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 94ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphColor(const SDNode *N, const char *Color); 951080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 96b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner typedef ilist<SDNode>::const_iterator allnodes_const_iterator; 97b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); } 98b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_end() const { return AllNodes.end(); } 99b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner typedef ilist<SDNode>::iterator allnodes_iterator; 100b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_begin() { return AllNodes.begin(); } 101b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_end() { return AllNodes.end(); } 102b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 103c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getRoot - Return the root tag of the SelectionDAG. 104cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 105c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &getRoot() const { return Root; } 106cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 107c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getEntryNode - Return the token chain corresponding to the entry of the 108c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// function. 109c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &getEntryNode() const { return EntryNode; } 110cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 111c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// setRoot - Set the current root tag of the SelectionDAG. 112cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 113c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &setRoot(SDOperand N) { return Root = N; } 114cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1151d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// Combine - This iterates over the nodes in the SelectionDAG, folding 1161d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// certain types of nodes together, or eliminating superfluous nodes. When 1171d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// the AfterLegalize argument is set to 'true', Combine takes care not to 1181d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// generate any nodes that will be illegal on the target. 1191d4d41411190dd9e62764e56713753d4155764ddNate Begeman void Combine(bool AfterLegalize); 1201d4d41411190dd9e62764e56713753d4155764ddNate Begeman 121c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Legalize - This transforms the SelectionDAG into a SelectionDAG that is 122c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// compatible with the target instruction selector, as indicated by the 123c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// TargetLowering object. 124cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 125c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Note that this is an involved process that may invalidate pointers into 126c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// the graph. 127063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner void Legalize(); 128c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 129d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// RemoveDeadNodes - This method deletes all unreachable nodes in the 130190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner /// SelectionDAG. 131190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner void RemoveDeadNodes(); 13270046e920fa37989a041af663ada2b2b646e258fChris Lattner 13370046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getVTList - Return an SDVTList that represents the list of values 13470046e920fa37989a041af663ada2b2b646e258fChris Lattner /// specified. 13570046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT); 13670046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT1, MVT::ValueType VT2); 13770046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT1, MVT::ValueType VT2,MVT::ValueType VT3); 13870046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(const MVT::ValueType *VTs, unsigned NumVTs); 13970046e920fa37989a041af663ada2b2b646e258fChris Lattner 14070046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getNodeValueTypes - These are obsolete, use getVTList instead. 14170046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT) { 14270046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT).VTs; 14370046e920fa37989a041af663ada2b2b646e258fChris Lattner } 14470046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1, 14570046e920fa37989a041af663ada2b2b646e258fChris Lattner MVT::ValueType VT2) { 14670046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2).VTs; 14770046e920fa37989a041af663ada2b2b646e258fChris Lattner } 14870046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1,MVT::ValueType VT2, 14970046e920fa37989a041af663ada2b2b646e258fChris Lattner MVT::ValueType VT3) { 15070046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2, VT3).VTs; 15170046e920fa37989a041af663ada2b2b646e258fChris Lattner } 15270046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(std::vector<MVT::ValueType> &VTList) { 15370046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(&VTList[0], VTList.size()).VTs; 15470046e920fa37989a041af663ada2b2b646e258fChris Lattner } 15570046e920fa37989a041af663ada2b2b646e258fChris Lattner 15670046e920fa37989a041af663ada2b2b646e258fChris Lattner 1571b1a49714ef26225a42199cf2930529f31868322Chris Lattner //===--------------------------------------------------------------------===// 15870046e920fa37989a041af663ada2b2b646e258fChris Lattner // Node creation methods. 15970046e920fa37989a041af663ada2b2b646e258fChris Lattner // 16047725d059b259f8a0c145478300c9e9caa006b59Chris Lattner SDOperand getString(const std::string &Val); 161cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner SDOperand getConstant(uint64_t Val, MVT::ValueType VT, bool isTarget = false); 162cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner SDOperand getTargetConstant(uint64_t Val, MVT::ValueType VT) { 163cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getConstant(Val, VT, true); 164cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 165c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getConstantFP(double Val, MVT::ValueType VT, bool isTarget = false); 166c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getTargetConstantFP(double Val, MVT::ValueType VT) { 167c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantFP(Val, VT, true); 168c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 16914229bb6369c110644c11bc7906b0c1167d3a87aEvan Cheng SDOperand getGlobalAddress(const GlobalValue *GV, MVT::ValueType VT, 170cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner int offset = 0, bool isTargetGA = false); 17161ca74bc3a29b2af2be7e4bd612289da8aae85b5Evan Cheng SDOperand getTargetGlobalAddress(const GlobalValue *GV, MVT::ValueType VT, 172cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner int offset = 0) { 173cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getGlobalAddress(GV, VT, offset, true); 174cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 175c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getFrameIndex(int FI, MVT::ValueType VT, bool isTarget = false); 176c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getTargetFrameIndex(int FI, MVT::ValueType VT) { 177c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getFrameIndex(FI, VT, true); 178c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 179c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getJumpTable(int JTI, MVT::ValueType VT, bool isTarget = false); 180c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getTargetJumpTable(int JTI, MVT::ValueType VT) { 181c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getJumpTable(JTI, VT, true); 182c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 183b8973bd8f50d7321635e1e07b81a880a0828d185Evan Cheng SDOperand getConstantPool(Constant *C, MVT::ValueType VT, 184c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offs = 0, bool isT=false); 185b8973bd8f50d7321635e1e07b81a880a0828d185Evan Cheng SDOperand getTargetConstantPool(Constant *C, MVT::ValueType VT, 186c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offset = 0) { 187c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantPool(C, VT, Align, Offset, true); 188c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 189d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng SDOperand getConstantPool(MachineConstantPoolValue *C, MVT::ValueType VT, 190d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng unsigned Align = 0, int Offs = 0, bool isT=false); 191d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng SDOperand getTargetConstantPool(MachineConstantPoolValue *C, 192d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng MVT::ValueType VT, unsigned Align = 0, 193d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng int Offset = 0) { 194d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng return getConstantPool(C, VT, Align, Offset, true); 195d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng } 196c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getBasicBlock(MachineBasicBlock *MBB); 197c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getExternalSymbol(const char *Sym, MVT::ValueType VT); 1982a2de66db2093a5bc1fd620d1b6ae7992a552b24Andrew Lenharth SDOperand getTargetExternalSymbol(const char *Sym, MVT::ValueType VT); 19915e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner SDOperand getValueType(MVT::ValueType); 200d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getRegister(unsigned Reg, MVT::ValueType VT); 201c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 202d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N) { 203d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner return getNode(ISD::CopyToReg, MVT::Other, Chain, 204d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner getRegister(Reg, N.getValueType()), N); 205cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner } 206cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 207e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 208e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 209e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 210e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N, 211e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 2122fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 213bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag }; 2142fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 215e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 21666a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 21766a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng // Similar to last getCopyToReg() except parameter Reg is a SDOperand 21866a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand getCopyToReg(SDOperand Chain, SDOperand Reg, SDOperand N, 21966a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand Flag) { 2202fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 221bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner SDOperand Ops[] = { Chain, Reg, N, Flag }; 2222fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 22366a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng } 224e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 225d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT) { 2262fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(VT, MVT::Other); 227f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, VT) }; 2282fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 2, Ops, 2); 22918c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner } 230e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 231e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 232e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 233e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 234e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT, 235e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 2362fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(VT, MVT::Other, MVT::Flag); 237f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, VT), Flag }; 2382fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 3, Ops, Flag.Val ? 3 : 2); 239e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 24018c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 2417cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getCondCode(ISD::CondCode Cond); 242cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 2431ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 2441ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 2451ccae666f596d5aeca5c9942995763600b622062Chris Lattner SDOperand getZeroExtendInReg(SDOperand Op, MVT::ValueType SrcTy); 2466a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner 2476a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 2486a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// a flag result (to ensure it's not CSE'd). 2496a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner SDOperand getCALLSEQ_START(SDOperand Chain, SDOperand Op) { 2502fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 251f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, Op }; 2522fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CALLSEQ_START, VTs, 2, Ops, 2); 2536a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 2541ccae666f596d5aeca5c9942995763600b622062Chris Lattner 255c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 256cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 257c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT); 258c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, SDOperand N); 259c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 260c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2); 261c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 262c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2, SDOperand N3); 263c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 2642d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4); 2652d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 266f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4, 267f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N5); 268f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 269f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner const SDOperand *Ops, unsigned NumOps); 270f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand getNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys, 271f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner const SDOperand *Ops, unsigned NumOps); 2722fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner SDOperand getNode(unsigned Opcode, const MVT::ValueType *VTs, unsigned NumVTs, 2732fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const SDOperand *Ops, unsigned NumOps); 27467bb42aa5957bb24c0604cc08243cde9fe938e94Chris Lattner SDOperand getNode(unsigned Opcode, SDVTList VTs, 27567bb42aa5957bb24c0604cc08243cde9fe938e94Chris Lattner const SDOperand *Ops, unsigned NumOps); 276f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner 2777cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 2787cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// have an ISD::CondCode instead of an SDOperand. 2797cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 2807cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getSetCC(MVT::ValueType VT, SDOperand LHS, SDOperand RHS, 2817cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner ISD::CondCode Cond) { 2827cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner return getNode(ISD::SETCC, VT, LHS, RHS, getCondCode(Cond)); 2837cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 2849373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 2859373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 2869373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// just have an ISD::CondCode instead of an SDOperand. 2879373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 2889373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand getSelectCC(SDOperand LHS, SDOperand RHS, 2899373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand True, SDOperand False, ISD::CondCode Cond) { 2902fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::SELECT_CC, True.getValueType(), LHS, RHS, True, False, 2912fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner getCondCode(Cond)); 2929373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 2937cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 294acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 295acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 296acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand getVAArg(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr, 297acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand SV); 2987cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 299c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 300c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 301cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 30221074f43ed5165828717ea3606eb2bd222a39b26Chris Lattner SDOperand getLoad(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr, 30324446e253a17720f6462288255ab5ebd13b8491fEvan Cheng const Value *SV, int SVOffset, bool isVolatile=false); 30424446e253a17720f6462288255ab5ebd13b8491fEvan Cheng SDOperand getExtLoad(ISD::LoadExtType ExtType, MVT::ValueType VT, 30524446e253a17720f6462288255ab5ebd13b8491fEvan Cheng SDOperand Chain, SDOperand Ptr, const Value *SV, 30624446e253a17720f6462288255ab5ebd13b8491fEvan Cheng int SVOffset, MVT::ValueType EVT, bool isVolatile=false); 3075fbb5d2459a5410590f285250faa604576308a93Nate Begeman SDOperand getVecLoad(unsigned Count, MVT::ValueType VT, SDOperand Chain, 3085fbb5d2459a5410590f285250faa604576308a93Nate Begeman SDOperand Ptr, SDOperand SV); 3092d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 310ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// getStore - Helper function to build ISD::STORE nodes. 311ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// 312ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng SDOperand getStore(SDOperand Chain, SDOperand Value, SDOperand Ptr, 313ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng SDOperand SV); 314ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng 3152d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth // getSrcValue - construct a node to track a Value* through the backend 316691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth SDOperand getSrcValue(const Value* I, int offset = 0); 317cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 318b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 319b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 320b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 321b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 322b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 323b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 324b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op); 325b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2); 326b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 327b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3); 328b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 329b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3, SDOperand Op4); 3309b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 3319b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand Op3, SDOperand Op4, SDOperand Op5); 332f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand *Ops, unsigned NumOps); 3331b95095857b78e12138c22e76c7936611c51355bChris Lattner 3341b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 3351b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 3361b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 337eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// ISD::BUILTIN_OP_END+TargetOpcode in the node opcode field. The 0th value 338eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// of the resultant node is returned. 33995514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT); 34095514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 34195514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1); 34295514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 34395514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1, SDOperand Op2); 34495514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 34595514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 346694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 347694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng const SDOperand *Ops, unsigned NumOps); 34895514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 34995514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2); 35095514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 35195514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 35295514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op3); 353694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng 354753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 3556ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// getTargetNode - These are used for target selectors to create a new node 3566ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// with specified return type(s), target opcode, and operands. 3576ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 3586ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// Note that getTargetNode returns the resultant node. If there is already a 3596ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// node of the specified opcode and operands, it returns that node instead of 3606ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// the current one. 3616ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT); 3626ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3636ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1); 3646ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3656ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 3666ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3676ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 3686ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 369bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner const SDOperand *Ops, unsigned NumOps); 3706ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3716ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1); 3726ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3736ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2); 3746ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3756ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 3766ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3); 377694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 378694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng MVT::ValueType VT2, 379694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng const SDOperand *Ops, unsigned NumOps); 3806ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3816ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 3826ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 3836ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 384694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 385bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner const SDOperand *Ops, unsigned NumOps); 3866542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner 3876542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 38826005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 38926005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 39026005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// if you have two nodes with identical results, use the third otherwise. 3916542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 392fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// These methods all take an optional vector, which (if not null) is 393fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// populated with any nodes that are deleted from the SelectionDAG, due to 394fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// new equivalences that are discovered. 395fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 396fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDOperand From, SDOperand Op, 397fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 398fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 399fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 4008a842cf8287ee957e15b95ceeb6ee5f189caba3dChris Lattner void ReplaceAllUsesWith(SDNode *From, const SDOperand *To, 401fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 402fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 40380274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 40480274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// uses of other values produced by From.Val alone. The Deleted vector is 40580274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// handled the same was as for ReplaceAllUsesWith, but it is required for 40680274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// this method. 40780274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner void ReplaceAllUsesOfValueWith(SDOperand From, SDOperand To, 40880274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner std::vector<SDNode*> &Deleted); 40980274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 410ba8a0e0d7f03b7cac03ff1eaf9f048eb9d32bd46Chris Lattner /// DeleteNode - Remove the specified node from the system. This node must 411ba8a0e0d7f03b7cac03ff1eaf9f048eb9d32bd46Chris Lattner /// have no referrers. 412ba8a0e0d7f03b7cac03ff1eaf9f048eb9d32bd46Chris Lattner void DeleteNode(SDNode *N); 413b9ee9e60a905b90fa3e84c5c6091af6e5a0382d2Evan Cheng 414e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignNodeIds - Assign a unique node id for each node in the DAG based on 415e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// their allnodes order. It returns the maximum id. 4167c16d776cb827922dd0f8f0a88c5b65a90810c0bEvan Cheng unsigned AssignNodeIds(); 417b9ee9e60a905b90fa3e84c5c6091af6e5a0382d2Evan Cheng 418e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignTopologicalOrder - Assign a unique node id for each node in the DAG 41909fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// based on their topological order. It returns the maximum id and a vector 42009fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// of the SDNodes* in assigned order by reference. 42109fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng unsigned AssignTopologicalOrder(std::vector<SDNode*> &TopOrder); 422e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng 4231efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// isCommutativeBinOp - Returns true if the opcode is a commutative binary 4241efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// operation. 4251efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng static bool isCommutativeBinOp(unsigned Opcode) { 4261efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng switch (Opcode) { 4271efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADD: 4281efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MUL: 4291efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHU: 4301efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHS: 4311efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FADD: 4321efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FMUL: 4331efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::AND: 4341efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::OR: 4351efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::XOR: 4361efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDC: 4371efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDE: return true; 4381efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng default: return false; 4391efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 4401efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 4411efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng 442cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 443d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 444d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 4451b95095857b78e12138c22e76c7936611c51355bChris Lattner void RemoveNodeFromCSEMaps(SDNode *N); 4466542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner SDNode *AddNonLeafNodeToCSEMaps(SDNode *N); 447a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op, void *&InsertPos); 448a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op1, SDOperand Op2, 449a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 450f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, const SDOperand *Ops, unsigned NumOps, 451a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 452b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 453fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 4547cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 45532c392a3a5e397b5f1cc83aaedfab96368d11e8aNate Begeman /// SimplifySetCC - Try to simplify a setcc built with the specified operands 45632c392a3a5e397b5f1cc83aaedfab96368d11e8aNate Begeman /// and cc. If unable to simplify it, return a null SDOperand. 4574cf009f49cd37ae9cf4096dfe7ee9bcfa8e59b7aChris Lattner SDOperand SimplifySetCC(MVT::ValueType VT, SDOperand N1, 4584cf009f49cd37ae9cf4096dfe7ee9bcfa8e59b7aChris Lattner SDOperand N2, ISD::CondCode Cond); 459109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 460109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner // List of non-single value types. 461109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner std::list<std::vector<MVT::ValueType> > VTList; 462109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 4631cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner // Maps to auto-CSE operations. 4647cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 4651cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 46615e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 4675f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner std::map<std::string, SDNode*> ExternalSymbols; 4682a2de66db2093a5bc1fd620d1b6ae7992a552b24Andrew Lenharth std::map<std::string, SDNode*> TargetExternalSymbols; 46947725d059b259f8a0c145478300c9e9caa006b59Chris Lattner std::map<std::string, StringSDNode*> StringNodes; 470cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 471cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 4721080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 4731080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 4741080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 4751080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 4761080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 4771080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 4781080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 4791080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 4801080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 4811080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 482b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 483cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 484cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 485