SelectionDAG.h revision 7c16d776cb827922dd0f8f0a88c5b65a90810c0b
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 18c3aae25116e66c177579b0b79182b09340b19753Chris Lattner#include "llvm/CodeGen/SelectionDAGNodes.h" 19b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner#include "llvm/ADT/ilist" 20b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 21109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner#include <list> 22322812e603705e1c2037313633e72f689524b163Evan Cheng#include <map> 23322812e603705e1c2037313633e72f689524b163Evan Cheng#include <set> 24eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner#include <string> 25d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 26d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 27c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class TargetLowering; 28c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class TargetMachine; 29b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey class MachineDebugInfo; 30c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class MachineFunction; 31c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 32c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// SelectionDAG class - This is used to represent a portion of an LLVM function 33c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// in a low-level Data Dependence DAG representation suitable for instruction 34c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection. This DAG is constructed as the first step of instruction 35c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection in order to allow implementation of machine specific optimizations 36c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// and code simplifications. 37c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// 38c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// The representation used by the SelectionDAG is a target-independent 39c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// representation, which has some similarities to the GCC RTL representation, 40c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// but is significantly more simple, powerful, and is a graph form instead of a 41c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// linear form. 42cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner/// 43cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerclass SelectionDAG { 44063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &TLI; 45c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &MF; 46b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey MachineDebugInfo *DI; 47cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 48c3aae25116e66c177579b0b79182b09340b19753Chris Lattner // Root - The root of the entire DAG. EntryNode - The starting token. 49c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand Root, EntryNode; 50cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 51b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner // AllNodes - A linked list of nodes in the current DAG. 52b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner ilist<SDNode> AllNodes; 53691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 54691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth // ValueNodes - track SrcValue nodes 55691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth std::map<std::pair<const Value*, int>, SDNode*> ValueNodes; 56691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 57cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerpublic: 58b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey SelectionDAG(TargetLowering &tli, MachineFunction &mf, MachineDebugInfo *di) 59b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey : TLI(tli), MF(mf), DI(di) { 60c3aae25116e66c177579b0b79182b09340b19753Chris Lattner EntryNode = Root = getNode(ISD::EntryToken, MVT::Other); 61c3aae25116e66c177579b0b79182b09340b19753Chris Lattner } 62cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner ~SelectionDAG(); 63cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 64c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &getMachineFunction() const { return MF; } 65063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner const TargetMachine &getTarget() const; 66063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &getTargetLoweringInfo() const { return TLI; } 67b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey MachineDebugInfo *getMachineDebugInfo() const { return DI; } 68cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 691080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner /// viewGraph - Pop up a ghostview window with the DAG rendered using 'dot'. 701080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner /// 711080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner void viewGraph(); 721080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 731080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 74b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner typedef ilist<SDNode>::const_iterator allnodes_const_iterator; 75b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); } 76b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_end() const { return AllNodes.end(); } 77b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner typedef ilist<SDNode>::iterator allnodes_iterator; 78b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_begin() { return AllNodes.begin(); } 79b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_end() { return AllNodes.end(); } 80b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 81c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getRoot - Return the root tag of the SelectionDAG. 82cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 83c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &getRoot() const { return Root; } 84cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 85c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getEntryNode - Return the token chain corresponding to the entry of the 86c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// function. 87c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &getEntryNode() const { return EntryNode; } 88cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 89c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// setRoot - Set the current root tag of the SelectionDAG. 90cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 91c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &setRoot(SDOperand N) { return Root = N; } 92cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 931d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// Combine - This iterates over the nodes in the SelectionDAG, folding 941d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// certain types of nodes together, or eliminating superfluous nodes. When 951d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// the AfterLegalize argument is set to 'true', Combine takes care not to 961d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// generate any nodes that will be illegal on the target. 971d4d41411190dd9e62764e56713753d4155764ddNate Begeman void Combine(bool AfterLegalize); 981d4d41411190dd9e62764e56713753d4155764ddNate Begeman 99c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Legalize - This transforms the SelectionDAG into a SelectionDAG that is 100c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// compatible with the target instruction selector, as indicated by the 101c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// TargetLowering object. 102cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 103c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Note that this is an involved process that may invalidate pointers into 104c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// the graph. 105063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner void Legalize(); 106c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 107d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// RemoveDeadNodes - This method deletes all unreachable nodes in the 108d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// SelectionDAG, including nodes (like loads) that have uses of their token 109d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// chain but no other uses and no side effect. If a node is passed in as an 110d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// argument, it is used as the seed for node deletion. 111d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner void RemoveDeadNodes(SDNode *N = 0); 112d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 11347725d059b259f8a0c145478300c9e9caa006b59Chris Lattner SDOperand getString(const std::string &Val); 114c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getConstant(uint64_t Val, MVT::ValueType VT); 115056f9f61d071c6c583951678f2bf543a1316efccChris Lattner SDOperand getTargetConstant(uint64_t Val, MVT::ValueType VT); 116c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getConstantFP(double Val, MVT::ValueType VT); 117ac0d7238258defe72b1aad53d7f48201b91df795Chris Lattner SDOperand getTargetConstantFP(double Val, MVT::ValueType VT); 11814229bb6369c110644c11bc7906b0c1167d3a87aEvan Cheng SDOperand getGlobalAddress(const GlobalValue *GV, MVT::ValueType VT, 11914229bb6369c110644c11bc7906b0c1167d3a87aEvan Cheng int offset = 0); 12061ca74bc3a29b2af2be7e4bd612289da8aae85b5Evan Cheng SDOperand getTargetGlobalAddress(const GlobalValue *GV, MVT::ValueType VT, 12114229bb6369c110644c11bc7906b0c1167d3a87aEvan Cheng int offset = 0); 122c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getFrameIndex(int FI, MVT::ValueType VT); 123afb2dd43de61f4585e75d1f3ab93a9ac4b3b7592Chris Lattner SDOperand getTargetFrameIndex(int FI, MVT::ValueType VT); 12437efe6764568a3829fee26aba532283131d1a104Nate Begeman SDOperand getJumpTable(int JTI, MVT::ValueType VT); 12537efe6764568a3829fee26aba532283131d1a104Nate Begeman SDOperand getTargetJumpTable(int JTI, MVT::ValueType VT); 126b8973bd8f50d7321635e1e07b81a880a0828d185Evan Cheng SDOperand getConstantPool(Constant *C, MVT::ValueType VT, 127404cb4f9fa2df50eac4d84b8a77c84a92188c6d5Evan Cheng unsigned Alignment=0, int offset = 0); 128b8973bd8f50d7321635e1e07b81a880a0828d185Evan Cheng SDOperand getTargetConstantPool(Constant *C, MVT::ValueType VT, 129404cb4f9fa2df50eac4d84b8a77c84a92188c6d5Evan Cheng unsigned Alignment=0, int offset = 0); 130c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getBasicBlock(MachineBasicBlock *MBB); 131c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getExternalSymbol(const char *Sym, MVT::ValueType VT); 1322a2de66db2093a5bc1fd620d1b6ae7992a552b24Andrew Lenharth SDOperand getTargetExternalSymbol(const char *Sym, MVT::ValueType VT); 13315e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner SDOperand getValueType(MVT::ValueType); 134d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getRegister(unsigned Reg, MVT::ValueType VT); 135c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 136d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N) { 137d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner return getNode(ISD::CopyToReg, MVT::Other, Chain, 138d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner getRegister(Reg, N.getValueType()), N); 139cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner } 140cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 141e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 142e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 143e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 144e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N, 145e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 146e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner std::vector<MVT::ValueType> VTs; 147e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner VTs.push_back(MVT::Other); 148e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner VTs.push_back(MVT::Flag); 149e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner std::vector<SDOperand> Ops; 150e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner Ops.push_back(Chain); 151e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner Ops.push_back(getRegister(Reg, N.getValueType())); 152e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner Ops.push_back(N); 153e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner if (Flag.Val) Ops.push_back(Flag); 154e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner return getNode(ISD::CopyToReg, VTs, Ops); 155e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 15666a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 15766a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng // Similar to last getCopyToReg() except parameter Reg is a SDOperand 15866a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand getCopyToReg(SDOperand Chain, SDOperand Reg, SDOperand N, 15966a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand Flag) { 16066a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng std::vector<MVT::ValueType> VTs; 16166a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng VTs.push_back(MVT::Other); 16266a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng VTs.push_back(MVT::Flag); 16366a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng std::vector<SDOperand> Ops; 16466a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng Ops.push_back(Chain); 16566a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng Ops.push_back(Reg); 16666a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng Ops.push_back(N); 16766a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng if (Flag.Val) Ops.push_back(Flag); 16866a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng return getNode(ISD::CopyToReg, VTs, Ops); 16966a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng } 170e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 171d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT) { 172d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner std::vector<MVT::ValueType> ResultTys; 173d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner ResultTys.push_back(VT); 174d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner ResultTys.push_back(MVT::Other); 175d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner std::vector<SDOperand> Ops; 176d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner Ops.push_back(Chain); 177d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner Ops.push_back(getRegister(Reg, VT)); 178d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner return getNode(ISD::CopyFromReg, ResultTys, Ops); 17918c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner } 180e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 181e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 182e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 183e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 184e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT, 185e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 186e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner std::vector<MVT::ValueType> ResultTys; 187e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner ResultTys.push_back(VT); 188e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner ResultTys.push_back(MVT::Other); 189e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner ResultTys.push_back(MVT::Flag); 190e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner std::vector<SDOperand> Ops; 191e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner Ops.push_back(Chain); 192e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner Ops.push_back(getRegister(Reg, VT)); 193e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner if (Flag.Val) Ops.push_back(Flag); 194e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner return getNode(ISD::CopyFromReg, ResultTys, Ops); 195e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 19618c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 1977cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getCondCode(ISD::CondCode Cond); 198cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1991ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 2001ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 2011ccae666f596d5aeca5c9942995763600b622062Chris Lattner SDOperand getZeroExtendInReg(SDOperand Op, MVT::ValueType SrcTy); 2026a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner 2036a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 2046a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// a flag result (to ensure it's not CSE'd). 2056a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner SDOperand getCALLSEQ_START(SDOperand Chain, SDOperand Op) { 2066a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner std::vector<MVT::ValueType> ResultTys; 2076a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner ResultTys.push_back(MVT::Other); 2086a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner ResultTys.push_back(MVT::Flag); 2096a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner std::vector<SDOperand> Ops; 2106a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner Ops.push_back(Chain); 2116a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner Ops.push_back(Op); 2126a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner return getNode(ISD::CALLSEQ_START, ResultTys, Ops); 2136a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 2141ccae666f596d5aeca5c9942995763600b622062Chris Lattner 215c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 216cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 217c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT); 218c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, SDOperand N); 219c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 220c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2); 221c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 222c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2, SDOperand N3); 223c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 2242d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4); 2252d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 226f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4, 227f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N5); 228f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 229c3aae25116e66c177579b0b79182b09340b19753Chris Lattner std::vector<SDOperand> &Children); 2304211e73c4905af413db7524f24414c16a7f69102Chris Lattner SDOperand getNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys, 2314211e73c4905af413db7524f24414c16a7f69102Chris Lattner std::vector<SDOperand> &Ops); 232c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 2337cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 2347cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// have an ISD::CondCode instead of an SDOperand. 2357cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 2367cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getSetCC(MVT::ValueType VT, SDOperand LHS, SDOperand RHS, 2377cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner ISD::CondCode Cond) { 2387cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner return getNode(ISD::SETCC, VT, LHS, RHS, getCondCode(Cond)); 2397cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 2409373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 2419373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 2429373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// just have an ISD::CondCode instead of an SDOperand. 2439373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 2449373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand getSelectCC(SDOperand LHS, SDOperand RHS, 2459373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand True, SDOperand False, ISD::CondCode Cond) { 2469373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman MVT::ValueType VT = True.getValueType(); 2479373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman return getNode(ISD::SELECT_CC, VT, LHS, RHS, True, False,getCondCode(Cond)); 2489373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 2497cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 250acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 251acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 252acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand getVAArg(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr, 253acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand SV); 2547cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 255c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 256c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 257cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 25821074f43ed5165828717ea3606eb2bd222a39b26Chris Lattner SDOperand getLoad(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr, 25921074f43ed5165828717ea3606eb2bd222a39b26Chris Lattner SDOperand SV); 2605fbb5d2459a5410590f285250faa604576308a93Nate Begeman SDOperand getVecLoad(unsigned Count, MVT::ValueType VT, SDOperand Chain, 2615fbb5d2459a5410590f285250faa604576308a93Nate Begeman SDOperand Ptr, SDOperand SV); 2625f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner SDOperand getExtLoad(unsigned Opcode, MVT::ValueType VT, SDOperand Chain, 2635f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner SDOperand Ptr, SDOperand SV, MVT::ValueType EVT); 2642d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 2652d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth // getSrcValue - construct a node to track a Value* through the backend 266691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth SDOperand getSrcValue(const Value* I, int offset = 0); 267cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 268b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 269b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 270b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 271b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 272b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 273b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 274b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op); 275b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2); 276b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 277b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3); 278b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 279b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3, SDOperand Op4); 2809b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 2819b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand Op3, SDOperand Op4, SDOperand Op5); 282b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, const std::vector<SDOperand> &Op); 2831b95095857b78e12138c22e76c7936611c51355bChris Lattner 2841b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 2851b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 2861b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 287eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// ISD::BUILTIN_OP_END+TargetOpcode in the node opcode field. The 0th value 288eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// of the resultant node is returned. 289eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT); 290eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 291eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op1); 292eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 293eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op1, SDOperand Op2); 294eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 295eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op1, SDOperand Op2, SDOperand Op3); 296eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 297eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op1, SDOperand Op2, SDOperand Op3, 298eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op4); 299eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 300eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op1, SDOperand Op2, SDOperand Op3, 301eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op4, SDOperand Op5); 302eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 303eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op1, SDOperand Op2, SDOperand Op3, 304eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op4, SDOperand Op5, SDOperand Op6); 3058c6f1ee5aa376118f1cb7b16b62994fc255eac56Andrew Lenharth SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 3068c6f1ee5aa376118f1cb7b16b62994fc255eac56Andrew Lenharth SDOperand Op1, SDOperand Op2, SDOperand Op3, 3078c6f1ee5aa376118f1cb7b16b62994fc255eac56Andrew Lenharth SDOperand Op4, SDOperand Op5, SDOperand Op6, 3088c6f1ee5aa376118f1cb7b16b62994fc255eac56Andrew Lenharth SDOperand Op7); 3097cf11b4ab248d6ab7fb0d9df0b72baf158201abeAndrew Lenharth SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 3107cf11b4ab248d6ab7fb0d9df0b72baf158201abeAndrew Lenharth SDOperand Op1, SDOperand Op2, SDOperand Op3, 3117cf11b4ab248d6ab7fb0d9df0b72baf158201abeAndrew Lenharth SDOperand Op4, SDOperand Op5, SDOperand Op6, 3127cf11b4ab248d6ab7fb0d9df0b72baf158201abeAndrew Lenharth SDOperand Op7, SDOperand Op8); 313eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 314eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner MVT::ValueType VT2, SDOperand Op1, SDOperand Op2); 315eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 316eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 317eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op3); 318eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 319eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 320eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op3, SDOperand Op4); 321eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 322eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 323eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner SDOperand Op3, SDOperand Op4, SDOperand Op5); 324753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 3256ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// getTargetNode - These are used for target selectors to create a new node 3266ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// with specified return type(s), target opcode, and operands. 3276ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 3286ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// Note that getTargetNode returns the resultant node. If there is already a 3296ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// node of the specified opcode and operands, it returns that node instead of 3306ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// the current one. 3316ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT); 3326ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3336ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1); 3346ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3356ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 3366ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3376ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 3386ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3396ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3, 3406ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op4); 3416ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3426ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3, 3436ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op4, SDOperand Op5); 3446ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3456ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3, 3466ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op4, SDOperand Op5, SDOperand Op6); 3476ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3486ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3, 3496ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op4, SDOperand Op5, SDOperand Op6, 3506ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op7); 3516ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3526ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3, 3536ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op4, SDOperand Op5, SDOperand Op6, 3546ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op7, SDOperand Op8); 3556ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3566ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng std::vector<SDOperand> &Ops); 3576ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3586ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1); 3596ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3606ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2); 3616ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3626ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 3636ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3); 3646ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3656ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 3666ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3, SDOperand Op4); 3676ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3686ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 3696ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3, SDOperand Op4, SDOperand Op5); 3706ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3716ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 3726ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3, SDOperand Op4, SDOperand Op5, 3736ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op6); 3746ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3756ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 3766ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3, SDOperand Op4, SDOperand Op5, 3776ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op6, SDOperand Op7); 3786ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3796ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 3806ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 3816ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3826ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 3836ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, 3846ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3, SDOperand Op4, SDOperand Op5); 3856ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3866ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 3876ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, 3886ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3, SDOperand Op4, SDOperand Op5, 3896ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op6); 3906ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3916ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 3926ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, 3936ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3, SDOperand Op4, SDOperand Op5, 3946ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op6, SDOperand Op7); 3956ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3966ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, std::vector<SDOperand> &Ops); 3976542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner 3986542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 39926005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 40026005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 40126005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// if you have two nodes with identical results, use the third otherwise. 4026542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 403fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// These methods all take an optional vector, which (if not null) is 404fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// populated with any nodes that are deleted from the SelectionDAG, due to 405fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// new equivalences that are discovered. 406fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 407fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDOperand From, SDOperand Op, 408fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 409fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 410fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 411fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, const std::vector<SDOperand> &To, 412fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 413fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 41480274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 41580274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// uses of other values produced by From.Val alone. The Deleted vector is 41680274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// handled the same was as for ReplaceAllUsesWith, but it is required for 41780274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// this method. 41880274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner void ReplaceAllUsesOfValueWith(SDOperand From, SDOperand To, 41980274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner std::vector<SDNode*> &Deleted); 42080274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 421ba8a0e0d7f03b7cac03ff1eaf9f048eb9d32bd46Chris Lattner /// DeleteNode - Remove the specified node from the system. This node must 422ba8a0e0d7f03b7cac03ff1eaf9f048eb9d32bd46Chris Lattner /// have no referrers. 423ba8a0e0d7f03b7cac03ff1eaf9f048eb9d32bd46Chris Lattner void DeleteNode(SDNode *N); 424b9ee9e60a905b90fa3e84c5c6091af6e5a0382d2Evan Cheng 425b9ee9e60a905b90fa3e84c5c6091af6e5a0382d2Evan Cheng /// AssignNodeIds - Assign a unique node id for each node in the DAG. It 426b9ee9e60a905b90fa3e84c5c6091af6e5a0382d2Evan Cheng /// returns the maximum id. 4277c16d776cb827922dd0f8f0a88c5b65a90810c0bEvan Cheng unsigned AssignNodeIds(); 428b9ee9e60a905b90fa3e84c5c6091af6e5a0382d2Evan Cheng 429cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 430d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 431fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng /// InsertISelMapEntry - A helper function to insert a key / element pair 432fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng /// into a SDOperand to SDOperand map. This is added to avoid the map 433fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng /// insertion operator from being inlined. 434fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng static void InsertISelMapEntry(std::map<SDOperand, SDOperand> &Map, 435fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng SDNode *Key, unsigned KeyResNo, 436fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng SDNode *Element, unsigned ElementResNo); 437322812e603705e1c2037313633e72f689524b163Evan Cheng 438322812e603705e1c2037313633e72f689524b163Evan Cheng /// InsertInFlightSetEntry - A helper function to insert a SDNode* to a 439322812e603705e1c2037313633e72f689524b163Evan Cheng /// SDNode* set. This is added to avoid the set insertion operator from being 440322812e603705e1c2037313633e72f689524b163Evan Cheng /// inlined. 441322812e603705e1c2037313633e72f689524b163Evan Cheng static void InsertInFlightSetEntry(std::set<SDNode*> &Set, SDNode *N); 442322812e603705e1c2037313633e72f689524b163Evan Cheng 443322812e603705e1c2037313633e72f689524b163Evan Cheng /// RemoveInFlightSetEntry - A helper function to remove a SDNode* from a 444322812e603705e1c2037313633e72f689524b163Evan Cheng /// SDNode* set. This is added to avoid the set removal operator from being 445322812e603705e1c2037313633e72f689524b163Evan Cheng /// inlined. 446322812e603705e1c2037313633e72f689524b163Evan Cheng static void RemoveInFlightSetEntry(std::set<SDNode*> &Set, SDNode *N); 447fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 448d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 4491b95095857b78e12138c22e76c7936611c51355bChris Lattner void RemoveNodeFromCSEMaps(SDNode *N); 4506542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner SDNode *AddNonLeafNodeToCSEMaps(SDNode *N); 451b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDNode **FindModifiedNodeSlot(SDNode *N, SDOperand Op); 452b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDNode **FindModifiedNodeSlot(SDNode *N, SDOperand Op1, SDOperand Op2); 453b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDNode **FindModifiedNodeSlot(SDNode *N, const std::vector<SDOperand> &Ops); 454b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 455f0e80cf909b69b5f31b8d027de6ee4b963205f66Chris Lattner void DestroyDeadNode(SDNode *N); 456fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 457109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner void setNodeValueTypes(SDNode *N, std::vector<MVT::ValueType> &RetVals); 458109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner void setNodeValueTypes(SDNode *N, MVT::ValueType VT1, MVT::ValueType VT2); 459109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 4607cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 46132c392a3a5e397b5f1cc83aaedfab96368d11e8aNate Begeman /// SimplifySetCC - Try to simplify a setcc built with the specified operands 46232c392a3a5e397b5f1cc83aaedfab96368d11e8aNate Begeman /// and cc. If unable to simplify it, return a null SDOperand. 4634cf009f49cd37ae9cf4096dfe7ee9bcfa8e59b7aChris Lattner SDOperand SimplifySetCC(MVT::ValueType VT, SDOperand N1, 4644cf009f49cd37ae9cf4096dfe7ee9bcfa8e59b7aChris Lattner SDOperand N2, ISD::CondCode Cond); 465109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 466109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner // List of non-single value types. 467109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner std::list<std::vector<MVT::ValueType> > VTList; 468109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 4691cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner // Maps to auto-CSE operations. 470ab2eb66f07689dc1698ace2182e77395254ad83dChris Lattner std::map<std::pair<unsigned, MVT::ValueType>, SDNode *> NullaryOps; 4711cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner std::map<std::pair<unsigned, std::pair<SDOperand, MVT::ValueType> >, 4721cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner SDNode *> UnaryOps; 4731cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner std::map<std::pair<unsigned, std::pair<SDOperand, SDOperand> >, 4741cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner SDNode *> BinaryOps; 4751cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 476d6a80778e5a5fab339036b2f462d3039efe28a08Chris Lattner std::map<std::pair<unsigned, MVT::ValueType>, RegisterSDNode*> RegNodes; 4777cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 4781cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 4791cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner std::map<std::pair<SDOperand, std::pair<SDOperand, MVT::ValueType> >, 4801cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner SDNode *> Loads; 4811cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 48214229bb6369c110644c11bc7906b0c1167d3a87aEvan Cheng std::map<std::pair<const GlobalValue*, int>, SDNode*> GlobalValues; 48314229bb6369c110644c11bc7906b0c1167d3a87aEvan Cheng std::map<std::pair<const GlobalValue*, int>, SDNode*> TargetGlobalValues; 4841cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> Constants; 485056f9f61d071c6c583951678f2bf543a1316efccChris Lattner std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> TargetConstants; 486b29cb29364d3e22f062c695d2d5740dda42d8e8eChris Lattner std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> ConstantFPs; 487ac0d7238258defe72b1aad53d7f48201b91df795Chris Lattner std::map<std::pair<uint64_t, MVT::ValueType>, SDNode*> TargetConstantFPs; 48837efe6764568a3829fee26aba532283131d1a104Nate Begeman std::map<int, SDNode*> FrameIndices, TargetFrameIndices, JumpTableIndices, 48937efe6764568a3829fee26aba532283131d1a104Nate Begeman TargetJumpTableIndices; 490404cb4f9fa2df50eac4d84b8a77c84a92188c6d5Evan Cheng std::map<std::pair<Constant *, 491404cb4f9fa2df50eac4d84b8a77c84a92188c6d5Evan Cheng std::pair<int, unsigned> >, SDNode*> ConstantPoolIndices; 492404cb4f9fa2df50eac4d84b8a77c84a92188c6d5Evan Cheng std::map<std::pair<Constant *, 493404cb4f9fa2df50eac4d84b8a77c84a92188c6d5Evan Cheng std::pair<int, unsigned> >, SDNode*> TargetConstantPoolIndices; 4941cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner std::map<MachineBasicBlock *, SDNode*> BBNodes; 49515e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 4965f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner std::map<std::string, SDNode*> ExternalSymbols; 4972a2de66db2093a5bc1fd620d1b6ae7992a552b24Andrew Lenharth std::map<std::string, SDNode*> TargetExternalSymbols; 49847725d059b259f8a0c145478300c9e9caa006b59Chris Lattner std::map<std::string, StringSDNode*> StringNodes; 4994211e73c4905af413db7524f24414c16a7f69102Chris Lattner std::map<std::pair<unsigned, 5006765bfed31f06d7ed2f5a87248ffadc9dce10de4Chris Lattner std::pair<MVT::ValueType, std::vector<SDOperand> > >, 5016765bfed31f06d7ed2f5a87248ffadc9dce10de4Chris Lattner SDNode*> OneResultNodes; 5026765bfed31f06d7ed2f5a87248ffadc9dce10de4Chris Lattner std::map<std::pair<unsigned, 5034211e73c4905af413db7524f24414c16a7f69102Chris Lattner std::pair<std::vector<MVT::ValueType>, 5044211e73c4905af413db7524f24414c16a7f69102Chris Lattner std::vector<SDOperand> > >, 5054211e73c4905af413db7524f24414c16a7f69102Chris Lattner SDNode*> ArbitraryNodes; 506cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 507cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 5081080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 5091080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 5101080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 5111080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 5121080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 5131080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 5141080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 5151080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 5161080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 5171080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 518b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 519cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 520cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 521