SelectionDAG.h revision c7c3f110eda0ff8040e4bd99e38d3112b910810f
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 { 28c7c3f110eda0ff8040e4bd99e38d3112b910810fJim Laskey class AliasAnalysis; 29c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class TargetLowering; 30c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class TargetMachine; 31b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey class MachineDebugInfo; 32c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class MachineFunction; 33d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng class MachineConstantPoolValue; 34c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 35c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// SelectionDAG class - This is used to represent a portion of an LLVM function 36c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// in a low-level Data Dependence DAG representation suitable for instruction 37c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection. This DAG is constructed as the first step of instruction 38c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection in order to allow implementation of machine specific optimizations 39c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// and code simplifications. 40c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// 41c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// The representation used by the SelectionDAG is a target-independent 42c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// representation, which has some similarities to the GCC RTL representation, 43c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// but is significantly more simple, powerful, and is a graph form instead of a 44c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// linear form. 45cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner/// 46cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerclass SelectionDAG { 47063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &TLI; 48c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &MF; 49b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey MachineDebugInfo *DI; 50cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 51213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// Root - The root of the entire DAG. EntryNode - The starting token. 52c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand Root, EntryNode; 53cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 54213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// AllNodes - A linked list of nodes in the current DAG. 55b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner ilist<SDNode> AllNodes; 56691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 57213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSEMap - This structure is used to memoize nodes, automatically performing 58213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSE with existing nodes with a duplicate is requested. 59213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner SelectionDAGCSEMap CSEMap; 60213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner 61cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerpublic: 62b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey SelectionDAG(TargetLowering &tli, MachineFunction &mf, MachineDebugInfo *di) 63b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey : TLI(tli), MF(mf), DI(di) { 64c3aae25116e66c177579b0b79182b09340b19753Chris Lattner EntryNode = Root = getNode(ISD::EntryToken, MVT::Other); 65c3aae25116e66c177579b0b79182b09340b19753Chris Lattner } 66cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner ~SelectionDAG(); 67cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 68c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &getMachineFunction() const { return MF; } 69063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner const TargetMachine &getTarget() const; 70063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &getTargetLoweringInfo() const { return TLI; } 71b2efb853f00d45b1c8d57f92acd0028fbdeffda6Jim Laskey MachineDebugInfo *getMachineDebugInfo() const { return DI; } 72cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 73ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// viewGraph - Pop up a GraphViz/gv window with the DAG rendered using 'dot'. 741080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner /// 751080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner void viewGraph(); 76ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 77ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#ifndef NDEBUG 78ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey std::map<const SDNode *, std::string> NodeGraphAttrs; 79ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#endif 801080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 81ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// clearGraphAttrs - Clear all previously defined node graph attributes. 82ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Intended to be used from a debugging tool (eg. gdb). 83ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void clearGraphAttrs(); 84ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 85ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".) 86ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 87ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphAttrs(const SDNode *N, const char *Attrs); 88ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 89ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".) 90ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Used from getNodeAttributes. 91ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey const std::string getGraphAttrs(const SDNode *N) const; 92ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 93ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphColor - Convenience for setting node color attribute. 94ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 95ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphColor(const SDNode *N, const char *Color); 961080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 97b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner typedef ilist<SDNode>::const_iterator allnodes_const_iterator; 98b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); } 99b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_end() const { return AllNodes.end(); } 100b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner typedef ilist<SDNode>::iterator allnodes_iterator; 101b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_begin() { return AllNodes.begin(); } 102b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_end() { return AllNodes.end(); } 103b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 104c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getRoot - Return the root tag of the SelectionDAG. 105cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 106c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &getRoot() const { return Root; } 107cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 108c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getEntryNode - Return the token chain corresponding to the entry of the 109c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// function. 110c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &getEntryNode() const { return EntryNode; } 111cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 112c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// setRoot - Set the current root tag of the SelectionDAG. 113cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 114c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &setRoot(SDOperand N) { return Root = N; } 115cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1161d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// Combine - This iterates over the nodes in the SelectionDAG, folding 1171d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// certain types of nodes together, or eliminating superfluous nodes. When 1181d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// the AfterLegalize argument is set to 'true', Combine takes care not to 1191d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// generate any nodes that will be illegal on the target. 120c7c3f110eda0ff8040e4bd99e38d3112b910810fJim Laskey void Combine(bool AfterLegalize, AliasAnalysis &AA); 1211d4d41411190dd9e62764e56713753d4155764ddNate Begeman 122c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Legalize - This transforms the SelectionDAG into a SelectionDAG that is 123c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// compatible with the target instruction selector, as indicated by the 124c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// TargetLowering object. 125cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 126c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Note that this is an involved process that may invalidate pointers into 127c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// the graph. 128063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner void Legalize(); 129c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 130d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// RemoveDeadNodes - This method deletes all unreachable nodes in the 131190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner /// SelectionDAG. 132190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner void RemoveDeadNodes(); 133130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 134130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// RemoveDeadNode - Remove the specified node from the system. If any of its 135130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// operands then becomes dead, remove them as well. The vector Deleted is 136130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// populated with nodes that are deleted. 137130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng void RemoveDeadNode(SDNode *N, std::vector<SDNode*> &Deleted); 13870046e920fa37989a041af663ada2b2b646e258fChris Lattner 139130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// DeleteNode - Remove the specified node from the system. This node must 140130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// have no referrers. 141130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng void DeleteNode(SDNode *N); 142130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 14370046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getVTList - Return an SDVTList that represents the list of values 14470046e920fa37989a041af663ada2b2b646e258fChris Lattner /// specified. 14570046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT); 14670046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT1, MVT::ValueType VT2); 14770046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT1, MVT::ValueType VT2,MVT::ValueType VT3); 14870046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(const MVT::ValueType *VTs, unsigned NumVTs); 14970046e920fa37989a041af663ada2b2b646e258fChris Lattner 15070046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getNodeValueTypes - These are obsolete, use getVTList instead. 15170046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT) { 15270046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT).VTs; 15370046e920fa37989a041af663ada2b2b646e258fChris Lattner } 15470046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1, 15570046e920fa37989a041af663ada2b2b646e258fChris Lattner MVT::ValueType VT2) { 15670046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2).VTs; 15770046e920fa37989a041af663ada2b2b646e258fChris Lattner } 15870046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1,MVT::ValueType VT2, 15970046e920fa37989a041af663ada2b2b646e258fChris Lattner MVT::ValueType VT3) { 16070046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2, VT3).VTs; 16170046e920fa37989a041af663ada2b2b646e258fChris Lattner } 16270046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(std::vector<MVT::ValueType> &VTList) { 16370046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(&VTList[0], VTList.size()).VTs; 16470046e920fa37989a041af663ada2b2b646e258fChris Lattner } 16570046e920fa37989a041af663ada2b2b646e258fChris Lattner 16670046e920fa37989a041af663ada2b2b646e258fChris Lattner 1671b1a49714ef26225a42199cf2930529f31868322Chris Lattner //===--------------------------------------------------------------------===// 16870046e920fa37989a041af663ada2b2b646e258fChris Lattner // Node creation methods. 16970046e920fa37989a041af663ada2b2b646e258fChris Lattner // 17047725d059b259f8a0c145478300c9e9caa006b59Chris Lattner SDOperand getString(const std::string &Val); 171cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner SDOperand getConstant(uint64_t Val, MVT::ValueType VT, bool isTarget = false); 172cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner SDOperand getTargetConstant(uint64_t Val, MVT::ValueType VT) { 173cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getConstant(Val, VT, true); 174cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 175c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getConstantFP(double Val, MVT::ValueType VT, bool isTarget = false); 176c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getTargetConstantFP(double Val, MVT::ValueType VT) { 177c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantFP(Val, VT, true); 178c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 17914229bb6369c110644c11bc7906b0c1167d3a87aEvan Cheng SDOperand getGlobalAddress(const GlobalValue *GV, MVT::ValueType VT, 180cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner int offset = 0, bool isTargetGA = false); 18161ca74bc3a29b2af2be7e4bd612289da8aae85b5Evan Cheng SDOperand getTargetGlobalAddress(const GlobalValue *GV, MVT::ValueType VT, 182cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner int offset = 0) { 183cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getGlobalAddress(GV, VT, offset, true); 184cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 185c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getFrameIndex(int FI, MVT::ValueType VT, bool isTarget = false); 186c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getTargetFrameIndex(int FI, MVT::ValueType VT) { 187c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getFrameIndex(FI, VT, true); 188c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 189c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getJumpTable(int JTI, MVT::ValueType VT, bool isTarget = false); 190c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getTargetJumpTable(int JTI, MVT::ValueType VT) { 191c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getJumpTable(JTI, VT, true); 192c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 193b8973bd8f50d7321635e1e07b81a880a0828d185Evan Cheng SDOperand getConstantPool(Constant *C, MVT::ValueType VT, 194c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offs = 0, bool isT=false); 195b8973bd8f50d7321635e1e07b81a880a0828d185Evan Cheng SDOperand getTargetConstantPool(Constant *C, MVT::ValueType VT, 196c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offset = 0) { 197c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantPool(C, VT, Align, Offset, true); 198c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 199d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng SDOperand getConstantPool(MachineConstantPoolValue *C, MVT::ValueType VT, 200d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng unsigned Align = 0, int Offs = 0, bool isT=false); 201d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng SDOperand getTargetConstantPool(MachineConstantPoolValue *C, 202d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng MVT::ValueType VT, unsigned Align = 0, 203d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng int Offset = 0) { 204d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng return getConstantPool(C, VT, Align, Offset, true); 205d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng } 206c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getBasicBlock(MachineBasicBlock *MBB); 207c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getExternalSymbol(const char *Sym, MVT::ValueType VT); 2082a2de66db2093a5bc1fd620d1b6ae7992a552b24Andrew Lenharth SDOperand getTargetExternalSymbol(const char *Sym, MVT::ValueType VT); 20915e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner SDOperand getValueType(MVT::ValueType); 210d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getRegister(unsigned Reg, MVT::ValueType VT); 211c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 212d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N) { 213d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner return getNode(ISD::CopyToReg, MVT::Other, Chain, 214d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner getRegister(Reg, N.getValueType()), N); 215cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner } 216cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 217e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 218e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 219e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 220e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N, 221e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 2222fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 223bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag }; 2242fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 225e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 22666a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 22766a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng // Similar to last getCopyToReg() except parameter Reg is a SDOperand 22866a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand getCopyToReg(SDOperand Chain, SDOperand Reg, SDOperand N, 22966a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand Flag) { 2302fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 231bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner SDOperand Ops[] = { Chain, Reg, N, Flag }; 2322fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 23366a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng } 234e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 235d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT) { 2362fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(VT, MVT::Other); 237f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, VT) }; 2382fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 2, Ops, 2); 23918c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner } 240e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 241e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 242e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 243e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 244e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT, 245e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 2462fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(VT, MVT::Other, MVT::Flag); 247f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, VT), Flag }; 2482fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 3, Ops, Flag.Val ? 3 : 2); 249e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 25018c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 2517cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getCondCode(ISD::CondCode Cond); 252cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 2531ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 2541ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 2551ccae666f596d5aeca5c9942995763600b622062Chris Lattner SDOperand getZeroExtendInReg(SDOperand Op, MVT::ValueType SrcTy); 2566a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner 2576a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 2586a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// a flag result (to ensure it's not CSE'd). 2596a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner SDOperand getCALLSEQ_START(SDOperand Chain, SDOperand Op) { 2602fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 261f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, Op }; 2622fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CALLSEQ_START, VTs, 2, Ops, 2); 2636a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 2641ccae666f596d5aeca5c9942995763600b622062Chris Lattner 265c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 266cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 267c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT); 268c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, SDOperand N); 269c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 270c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2); 271c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 272c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2, SDOperand N3); 273c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 2742d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4); 2752d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 276f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4, 277f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N5); 278f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 279f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner const SDOperand *Ops, unsigned NumOps); 280f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand getNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys, 281f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner const SDOperand *Ops, unsigned NumOps); 2822fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner SDOperand getNode(unsigned Opcode, const MVT::ValueType *VTs, unsigned NumVTs, 2832fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const SDOperand *Ops, unsigned NumOps); 28467bb42aa5957bb24c0604cc08243cde9fe938e94Chris Lattner SDOperand getNode(unsigned Opcode, SDVTList VTs, 28567bb42aa5957bb24c0604cc08243cde9fe938e94Chris Lattner const SDOperand *Ops, unsigned NumOps); 286f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner 2877cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 2887cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// have an ISD::CondCode instead of an SDOperand. 2897cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 2907cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getSetCC(MVT::ValueType VT, SDOperand LHS, SDOperand RHS, 2917cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner ISD::CondCode Cond) { 2927cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner return getNode(ISD::SETCC, VT, LHS, RHS, getCondCode(Cond)); 2937cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 2949373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 2959373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 2969373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// just have an ISD::CondCode instead of an SDOperand. 2979373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 2989373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand getSelectCC(SDOperand LHS, SDOperand RHS, 2999373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand True, SDOperand False, ISD::CondCode Cond) { 3002fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::SELECT_CC, True.getValueType(), LHS, RHS, True, False, 3012fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner getCondCode(Cond)); 3029373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 3037cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 304acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 305acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 306acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand getVAArg(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr, 307acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand SV); 3087cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 309c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 310c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 311cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 31221074f43ed5165828717ea3606eb2bd222a39b26Chris Lattner SDOperand getLoad(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr, 31324446e253a17720f6462288255ab5ebd13b8491fEvan Cheng const Value *SV, int SVOffset, bool isVolatile=false); 31424446e253a17720f6462288255ab5ebd13b8491fEvan Cheng SDOperand getExtLoad(ISD::LoadExtType ExtType, MVT::ValueType VT, 31524446e253a17720f6462288255ab5ebd13b8491fEvan Cheng SDOperand Chain, SDOperand Ptr, const Value *SV, 31624446e253a17720f6462288255ab5ebd13b8491fEvan Cheng int SVOffset, MVT::ValueType EVT, bool isVolatile=false); 3175fbb5d2459a5410590f285250faa604576308a93Nate Begeman SDOperand getVecLoad(unsigned Count, MVT::ValueType VT, SDOperand Chain, 3185fbb5d2459a5410590f285250faa604576308a93Nate Begeman SDOperand Ptr, SDOperand SV); 3192d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 320ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// getStore - Helper function to build ISD::STORE nodes. 321ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// 322ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng SDOperand getStore(SDOperand Chain, SDOperand Value, SDOperand Ptr, 3238b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng const Value *SV, int SVOffset, bool isVolatile=false); 3248b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng SDOperand getTruncStore(SDOperand Chain, SDOperand Value, SDOperand Ptr, 3258b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng const Value *SV, int SVOffset, MVT::ValueType TVT, 3268b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng bool isVolatile=false); 327ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng 3282d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth // getSrcValue - construct a node to track a Value* through the backend 329691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth SDOperand getSrcValue(const Value* I, int offset = 0); 330cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 331b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 332b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 333b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 334b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 335b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 336b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 337b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op); 338b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2); 339b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 340b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3); 341b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 342b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3, SDOperand Op4); 3439b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 3449b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand Op3, SDOperand Op4, SDOperand Op5); 345f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand *Ops, unsigned NumOps); 3461b95095857b78e12138c22e76c7936611c51355bChris Lattner 3471b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 3481b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 3491b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 350eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// ISD::BUILTIN_OP_END+TargetOpcode in the node opcode field. The 0th value 351eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// of the resultant node is returned. 35295514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT); 35395514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 35495514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1); 35595514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 35695514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1, SDOperand Op2); 35795514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 35895514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 359694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 360694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng const SDOperand *Ops, unsigned NumOps); 36195514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 36295514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2); 36395514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 36495514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 36595514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op3); 366694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng 367753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 3686ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// getTargetNode - These are used for target selectors to create a new node 3696ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// with specified return type(s), target opcode, and operands. 3706ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 3716ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// Note that getTargetNode returns the resultant node. If there is already a 3726ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// node of the specified opcode and operands, it returns that node instead of 3736ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// the current one. 3746ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT); 3756ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3766ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1); 3776ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3786ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 3796ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 3806ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 3816ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 382bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner const SDOperand *Ops, unsigned NumOps); 3836ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3846ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1); 3856ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3866ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2); 3876ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3886ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 3896ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3); 390694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 391694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng MVT::ValueType VT2, 392694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng const SDOperand *Ops, unsigned NumOps); 3936ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 3946ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 3956ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 3966ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 397694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 398bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner const SDOperand *Ops, unsigned NumOps); 3996542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner 4006542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 40126005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 40226005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 40326005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// if you have two nodes with identical results, use the third otherwise. 4046542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 405fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// These methods all take an optional vector, which (if not null) is 406fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// populated with any nodes that are deleted from the SelectionDAG, due to 407fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// new equivalences that are discovered. 408fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 409fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDOperand From, SDOperand Op, 410fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 411fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 412fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 4138a842cf8287ee957e15b95ceeb6ee5f189caba3dChris Lattner void ReplaceAllUsesWith(SDNode *From, const SDOperand *To, 414fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 415fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 41680274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 41780274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// uses of other values produced by From.Val alone. The Deleted vector is 41880274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// handled the same was as for ReplaceAllUsesWith, but it is required for 41980274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// this method. 42080274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner void ReplaceAllUsesOfValueWith(SDOperand From, SDOperand To, 42180274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner std::vector<SDNode*> &Deleted); 42280274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 423e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignNodeIds - Assign a unique node id for each node in the DAG based on 424e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// their allnodes order. It returns the maximum id. 4257c16d776cb827922dd0f8f0a88c5b65a90810c0bEvan Cheng unsigned AssignNodeIds(); 426b9ee9e60a905b90fa3e84c5c6091af6e5a0382d2Evan Cheng 427e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignTopologicalOrder - Assign a unique node id for each node in the DAG 42809fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// based on their topological order. It returns the maximum id and a vector 42909fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// of the SDNodes* in assigned order by reference. 43009fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng unsigned AssignTopologicalOrder(std::vector<SDNode*> &TopOrder); 431e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng 4321efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// isCommutativeBinOp - Returns true if the opcode is a commutative binary 4331efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// operation. 4341efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng static bool isCommutativeBinOp(unsigned Opcode) { 4351efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng switch (Opcode) { 4361efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADD: 4371efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MUL: 4381efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHU: 4391efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHS: 4401efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FADD: 4411efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FMUL: 4421efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::AND: 4431efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::OR: 4441efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::XOR: 4451efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDC: 4461efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDE: return true; 4471efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng default: return false; 4481efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 4491efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 4501efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng 451cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 452d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 45351dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner /// FoldSetCC - Constant fold a setcc to true or false. 45451dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner SDOperand FoldSetCC(MVT::ValueType VT, SDOperand N1, 45551dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner SDOperand N2, ISD::CondCode Cond); 45651dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner 457d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 4581b95095857b78e12138c22e76c7936611c51355bChris Lattner void RemoveNodeFromCSEMaps(SDNode *N); 4596542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner SDNode *AddNonLeafNodeToCSEMaps(SDNode *N); 460a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op, void *&InsertPos); 461a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op1, SDOperand Op2, 462a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 463f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, const SDOperand *Ops, unsigned NumOps, 464a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 465b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 466fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 4677cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 468109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner // List of non-single value types. 469109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner std::list<std::vector<MVT::ValueType> > VTList; 470109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 4711cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner // Maps to auto-CSE operations. 4727cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 4731cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 47415e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 4755f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner std::map<std::string, SDNode*> ExternalSymbols; 4762a2de66db2093a5bc1fd620d1b6ae7992a552b24Andrew Lenharth std::map<std::string, SDNode*> TargetExternalSymbols; 47747725d059b259f8a0c145478300c9e9caa006b59Chris Lattner std::map<std::string, StringSDNode*> StringNodes; 478cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 479cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 4801080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 4811080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 4821080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 4831080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 4841080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 4851080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 4861080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 4871080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 4881080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 4891080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 490b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 491cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 492cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 493