SelectionDAG.h revision cd920d9ecfcefff13c3619a32b58399cac2e3630
1c3aae25116e66c177579b0b79182b09340b19753Chris Lattner//===-- llvm/CodeGen/SelectionDAG.h - InstSelection DAG ---------*- C++ -*-===// 2ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 36fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// The LLVM Compiler Infrastructure 46fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 57ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// This file is distributed under the University of Illinois Open Source 67ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// 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 18583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey#include "llvm/ADT/FoldingSet.h" 194b84086e89d86fb16f562166d9fea8df37db6be7Dan Gohman#include "llvm/ADT/StringMap.h" 2043d1fd449f1a0ac9d9dafa0b9569bb6b2e976198Anton Korobeynikov#include "llvm/ADT/ilist.h" 21583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey#include "llvm/CodeGen/SelectionDAGNodes.h" 22b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 23109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner#include <list> 245892d47a625638a90afeb31dd4f6f80a2f9bacdeChris Lattner#include <vector> 25322812e603705e1c2037313633e72f689524b163Evan Cheng#include <map> 26eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner#include <string> 27d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 28d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 29c7c3f110eda0ff8040e4bd99e38d3112b910810fJim Laskey class AliasAnalysis; 30c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class TargetLowering; 31c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class TargetMachine; 3244c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey class MachineModuleInfo; 33c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class MachineFunction; 34d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng class MachineConstantPoolValue; 35ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner class FunctionLoweringInfo; 36c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 37c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// SelectionDAG class - This is used to represent a portion of an LLVM function 38c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// in a low-level Data Dependence DAG representation suitable for instruction 39c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection. This DAG is constructed as the first step of instruction 40c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection in order to allow implementation of machine specific optimizations 41c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// and code simplifications. 42c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// 43c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// The representation used by the SelectionDAG is a target-independent 44c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// representation, which has some similarities to the GCC RTL representation, 45c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// but is significantly more simple, powerful, and is a graph form instead of a 46c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// linear form. 47cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner/// 48cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerclass SelectionDAG { 49063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &TLI; 50c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &MF; 51ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner FunctionLoweringInfo &FLI; 5244c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey MachineModuleInfo *MMI; 53cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 54213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// Root - The root of the entire DAG. EntryNode - The starting token. 55c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand Root, EntryNode; 56cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 57213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// AllNodes - A linked list of nodes in the current DAG. 58b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner ilist<SDNode> AllNodes; 59691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 60213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSEMap - This structure is used to memoize nodes, automatically performing 61213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSE with existing nodes with a duplicate is requested. 62583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey FoldingSet<SDNode> CSEMap; 63213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner 64cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerpublic: 65ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner SelectionDAG(TargetLowering &tli, MachineFunction &mf, 66ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner FunctionLoweringInfo &fli, MachineModuleInfo *mmi) 67ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner : TLI(tli), MF(mf), FLI(fli), MMI(mmi) { 68c3aae25116e66c177579b0b79182b09340b19753Chris Lattner EntryNode = Root = getNode(ISD::EntryToken, MVT::Other); 69c3aae25116e66c177579b0b79182b09340b19753Chris Lattner } 70cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner ~SelectionDAG(); 71cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 72c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &getMachineFunction() const { return MF; } 73063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner const TargetMachine &getTarget() const; 74063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &getTargetLoweringInfo() const { return TLI; } 75ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner FunctionLoweringInfo &getFunctionLoweringInfo() const { return FLI; } 7644c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey MachineModuleInfo *getMachineModuleInfo() const { return MMI; } 77cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 78ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// viewGraph - Pop up a GraphViz/gv window with the DAG rendered using 'dot'. 791080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner /// 801080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner void viewGraph(); 81ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 82ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#ifndef NDEBUG 83ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey std::map<const SDNode *, std::string> NodeGraphAttrs; 84ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#endif 851080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 86ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// clearGraphAttrs - Clear all previously defined node graph attributes. 87ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Intended to be used from a debugging tool (eg. gdb). 88ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void clearGraphAttrs(); 89ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 90ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".) 91ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 92ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphAttrs(const SDNode *N, const char *Attrs); 93ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 94ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".) 95ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Used from getNodeAttributes. 96ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey const std::string getGraphAttrs(const SDNode *N) const; 97ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 98ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphColor - Convenience for setting node color attribute. 99ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 100ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphColor(const SDNode *N, const char *Color); 1011080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 102b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner typedef ilist<SDNode>::const_iterator allnodes_const_iterator; 103b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); } 104b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_end() const { return AllNodes.end(); } 105b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner typedef ilist<SDNode>::iterator allnodes_iterator; 106b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_begin() { return AllNodes.begin(); } 107b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_end() { return AllNodes.end(); } 108be20a88f534325f736830c94fc084c55b4aefdfdDan Gohman ilist<SDNode>::size_type allnodes_size() const { return AllNodes.size(); } 109b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 110c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getRoot - Return the root tag of the SelectionDAG. 111cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 112c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &getRoot() const { return Root; } 113cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 114c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getEntryNode - Return the token chain corresponding to the entry of the 115c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// function. 116c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &getEntryNode() const { return EntryNode; } 117cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 118c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// setRoot - Set the current root tag of the SelectionDAG. 119cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 120c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &setRoot(SDOperand N) { return Root = N; } 121cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1221d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// Combine - This iterates over the nodes in the SelectionDAG, folding 1231d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// certain types of nodes together, or eliminating superfluous nodes. When 1241d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// the AfterLegalize argument is set to 'true', Combine takes care not to 1251d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// generate any nodes that will be illegal on the target. 126c7c3f110eda0ff8040e4bd99e38d3112b910810fJim Laskey void Combine(bool AfterLegalize, AliasAnalysis &AA); 1271d4d41411190dd9e62764e56713753d4155764ddNate Begeman 12801d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// LegalizeTypes - This transforms the SelectionDAG into a SelectionDAG that 12901d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// only uses types natively supported by the target. 13001d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// 13101d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// Note that this is an involved process that may invalidate pointers into 13201d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// the graph. 13301d029b82cb08367d81aa10cdc94d05360466649Chris Lattner void LegalizeTypes(); 13401d029b82cb08367d81aa10cdc94d05360466649Chris Lattner 135c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Legalize - This transforms the SelectionDAG into a SelectionDAG that is 136c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// compatible with the target instruction selector, as indicated by the 137c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// TargetLowering object. 138cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 139c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Note that this is an involved process that may invalidate pointers into 140c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// the graph. 141063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner void Legalize(); 142c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 143d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// RemoveDeadNodes - This method deletes all unreachable nodes in the 144190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner /// SelectionDAG. 145190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner void RemoveDeadNodes(); 146130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 147130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// DeleteNode - Remove the specified node from the system. This node must 148130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// have no referrers. 149130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng void DeleteNode(SDNode *N); 150130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 15170046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getVTList - Return an SDVTList that represents the list of values 15270046e920fa37989a041af663ada2b2b646e258fChris Lattner /// specified. 15383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(MVT VT); 15483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(MVT VT1, MVT VT2); 15583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(MVT VT1, MVT VT2, MVT VT3); 15683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(const MVT *VTs, unsigned NumVTs); 15770046e920fa37989a041af663ada2b2b646e258fChris Lattner 15870046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getNodeValueTypes - These are obsolete, use getVTList instead. 15983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *getNodeValueTypes(MVT VT) { 16070046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT).VTs; 16170046e920fa37989a041af663ada2b2b646e258fChris Lattner } 16283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *getNodeValueTypes(MVT VT1, MVT VT2) { 16370046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2).VTs; 16470046e920fa37989a041af663ada2b2b646e258fChris Lattner } 16583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *getNodeValueTypes(MVT VT1, MVT VT2, MVT VT3) { 16670046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2, VT3).VTs; 16770046e920fa37989a041af663ada2b2b646e258fChris Lattner } 16883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *getNodeValueTypes(std::vector<MVT> &vtList) { 16913d57320bd212483463d4f8992d5787b29eda5dfBill Wendling return getVTList(&vtList[0], (unsigned)vtList.size()).VTs; 17070046e920fa37989a041af663ada2b2b646e258fChris Lattner } 17170046e920fa37989a041af663ada2b2b646e258fChris Lattner 17270046e920fa37989a041af663ada2b2b646e258fChris Lattner 1731b1a49714ef26225a42199cf2930529f31868322Chris Lattner //===--------------------------------------------------------------------===// 17470046e920fa37989a041af663ada2b2b646e258fChris Lattner // Node creation methods. 17570046e920fa37989a041af663ada2b2b646e258fChris Lattner // 17683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getConstant(uint64_t Val, MVT VT, bool isTarget = false); 17783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getConstant(const APInt &Val, MVT VT, bool isTarget = false); 1780bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner SDOperand getIntPtrConstant(uint64_t Val, bool isTarget = false); 17983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getTargetConstant(uint64_t Val, MVT VT) { 180cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getConstant(Val, VT, true); 181cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 18283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getTargetConstant(const APInt &Val, MVT VT) { 1836394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman return getConstant(Val, VT, true); 1846394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman } 18583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getConstantFP(double Val, MVT VT, bool isTarget = false); 18683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getConstantFP(const APFloat& Val, MVT VT, bool isTarget = false); 18783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getTargetConstantFP(double Val, MVT VT) { 188c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantFP(Val, VT, true); 189c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 19083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getTargetConstantFP(const APFloat& Val, MVT VT) { 191f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen return getConstantFP(Val, VT, true); 192f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen } 19383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getGlobalAddress(const GlobalValue *GV, MVT VT, 194cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner int offset = 0, bool isTargetGA = false); 19583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getTargetGlobalAddress(const GlobalValue *GV, MVT VT, 196cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner int offset = 0) { 197cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getGlobalAddress(GV, VT, offset, true); 198cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 19983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getFrameIndex(int FI, MVT VT, bool isTarget = false); 20083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getTargetFrameIndex(int FI, MVT VT) { 201c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getFrameIndex(FI, VT, true); 202c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 20383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getJumpTable(int JTI, MVT VT, bool isTarget = false); 20483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getTargetJumpTable(int JTI, MVT VT) { 205c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getJumpTable(JTI, VT, true); 206c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 20783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getConstantPool(Constant *C, MVT VT, 208c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offs = 0, bool isT=false); 20983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getTargetConstantPool(Constant *C, MVT VT, 210c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offset = 0) { 211c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantPool(C, VT, Align, Offset, true); 212c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 21383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getConstantPool(MachineConstantPoolValue *C, MVT VT, 214d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng unsigned Align = 0, int Offs = 0, bool isT=false); 215d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng SDOperand getTargetConstantPool(MachineConstantPoolValue *C, 21683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT, unsigned Align = 0, 217d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng int Offset = 0) { 218d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng return getConstantPool(C, VT, Align, Offset, true); 219d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng } 220c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getBasicBlock(MachineBasicBlock *MBB); 22183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getExternalSymbol(const char *Sym, MVT VT); 22283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getTargetExternalSymbol(const char *Sym, MVT VT); 223276dcbdc8db6614cfd5004dc7dc35e437ddf9c58Duncan Sands SDOperand getArgFlags(ISD::ArgFlagsTy Flags); 22483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getValueType(MVT); 22583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getRegister(unsigned Reg, MVT VT); 2267f460203b0c5350e9b2c592f438e40f7a7de6e45Dan Gohman SDOperand getDbgStopPoint(SDOperand Root, unsigned Line, unsigned Col, 2277f460203b0c5350e9b2c592f438e40f7a7de6e45Dan Gohman const CompileUnitDesc *CU); 2284406604047423576e36657c7ede266ca42e79642Dan Gohman SDOperand getLabel(unsigned Opcode, SDOperand Root, unsigned LabelID); 229c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 230d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N) { 231d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner return getNode(ISD::CopyToReg, MVT::Other, Chain, 232d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner getRegister(Reg, N.getValueType()), N); 233cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner } 234cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 235e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 236e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 237e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 238e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N, 239e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 24083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 241bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag }; 2422fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 243e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 24466a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 24566a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng // Similar to last getCopyToReg() except parameter Reg is a SDOperand 24666a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand getCopyToReg(SDOperand Chain, SDOperand Reg, SDOperand N, 24766a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand Flag) { 24883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 249bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner SDOperand Ops[] = { Chain, Reg, N, Flag }; 2502fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 25166a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng } 252e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 25383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT VT) { 25483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(VT, MVT::Other); 255f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, VT) }; 2562fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 2, Ops, 2); 25718c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner } 258e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 259e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 260e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 261e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 26283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT VT, 263e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 26483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(VT, MVT::Other, MVT::Flag); 265f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, VT), Flag }; 2662fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 3, Ops, Flag.Val ? 3 : 2); 267e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 26818c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 2697cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getCondCode(ISD::CondCode Cond); 270cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 2711ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 2721ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 27383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getZeroExtendInReg(SDOperand Op, MVT SrcTy); 2746a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner 2756a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 2766a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// a flag result (to ensure it's not CSE'd). 2776a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner SDOperand getCALLSEQ_START(SDOperand Chain, SDOperand Op) { 27883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 279f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, Op }; 2802fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CALLSEQ_START, VTs, 2, Ops, 2); 2816a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 2821ccae666f596d5aeca5c9942995763600b622062Chris Lattner 2830f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// getCALLSEQ_END - Return a new CALLSEQ_END node, which always must have a 2840f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// flag result (to ensure it's not CSE'd). 2850f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SDOperand getCALLSEQ_END(SDOperand Chain, SDOperand Op1, SDOperand Op2, 2860f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SDOperand InFlag) { 2870f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SDVTList NodeTys = getVTList(MVT::Other, MVT::Flag); 2880f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SmallVector<SDOperand, 4> Ops; 2890f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Chain); 2900f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op1); 2910f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op2); 2920f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(InFlag); 2930f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling return getNode(ISD::CALLSEQ_END, NodeTys, &Ops[0], 29434cd4a484e532cc463fd5a4bf59b88d13c5467c1Evan Cheng (unsigned)Ops.size() - (InFlag.Val == 0 ? 1 : 0)); 2950f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling } 2960f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling 297c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 298cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 29983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getNode(unsigned Opcode, MVT VT); 30083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getNode(unsigned Opcode, MVT VT, SDOperand N); 30183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getNode(unsigned Opcode, MVT VT, SDOperand N1, SDOperand N2); 30283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getNode(unsigned Opcode, MVT VT, 303c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2, SDOperand N3); 30483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getNode(unsigned Opcode, MVT VT, 3052d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4); 30683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getNode(unsigned Opcode, MVT VT, 307f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4, 308f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N5); 30983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getNode(unsigned Opcode, MVT VT, SDOperandPtr Ops, unsigned NumOps); 31083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getNode(unsigned Opcode, std::vector<MVT> &ResultTys, 3119cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 31283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getNode(unsigned Opcode, const MVT *VTs, unsigned NumVTs, 3139cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 31408ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs); 31508ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, SDOperand N); 31683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getNode(unsigned Opcode, SDVTList VTs, SDOperand N1, SDOperand N2); 31708ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 31808ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2, SDOperand N3); 31908ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 32008ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4); 32108ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 32208ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4, 32308ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N5); 32467bb42aa5957bb24c0604cc08243cde9fe938e94Chris Lattner SDOperand getNode(unsigned Opcode, SDVTList VTs, 3259cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 3265c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 327707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman SDOperand getMemcpy(SDOperand Chain, SDOperand Dst, SDOperand Src, 328707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman SDOperand Size, unsigned Align, 329707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman bool AlwaysInline, 3301f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *DstSV, uint64_t DstSVOff, 3311f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *SrcSV, uint64_t SrcSVOff); 3325c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 333707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman SDOperand getMemmove(SDOperand Chain, SDOperand Dst, SDOperand Src, 33455888274f21fc1a760679a51591a209758db8cbfDan Gohman SDOperand Size, unsigned Align, 3351f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *DstSV, uint64_t DstOSVff, 3361f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *SrcSV, uint64_t SrcSVOff); 3375c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 338707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman SDOperand getMemset(SDOperand Chain, SDOperand Dst, SDOperand Src, 339707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman SDOperand Size, unsigned Align, 3401f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *DstSV, uint64_t DstSVOff); 3415c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 3427cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 3437cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// have an ISD::CondCode instead of an SDOperand. 3447cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 34583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getSetCC(MVT VT, SDOperand LHS, SDOperand RHS, 3467cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner ISD::CondCode Cond) { 3477cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner return getNode(ISD::SETCC, VT, LHS, RHS, getCondCode(Cond)); 348b43e9c196542acc80c9e4643809661065710848fNate Begeman } 349b43e9c196542acc80c9e4643809661065710848fNate Begeman 350b43e9c196542acc80c9e4643809661065710848fNate Begeman /// getVSetCC - Helper function to make it easier to build VSetCC's nodes 351b43e9c196542acc80c9e4643809661065710848fNate Begeman /// if you just have an ISD::CondCode instead of an SDOperand. 352b43e9c196542acc80c9e4643809661065710848fNate Begeman /// 35383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getVSetCC(MVT VT, SDOperand LHS, SDOperand RHS, 354b43e9c196542acc80c9e4643809661065710848fNate Begeman ISD::CondCode Cond) { 355b43e9c196542acc80c9e4643809661065710848fNate Begeman return getNode(ISD::VSETCC, VT, LHS, RHS, getCondCode(Cond)); 3567cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 3579373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 3589373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 3599373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// just have an ISD::CondCode instead of an SDOperand. 3609373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 3619373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand getSelectCC(SDOperand LHS, SDOperand RHS, 3629373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand True, SDOperand False, ISD::CondCode Cond) { 3632fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::SELECT_CC, True.getValueType(), LHS, RHS, True, False, 3642fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner getCondCode(Cond)); 3659373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 3667cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 367acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 368acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 36983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getVAArg(MVT VT, SDOperand Chain, SDOperand Ptr, 370acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand SV); 3717cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 372ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth /// getAtomic - Gets a node for an atomic op, produces result and chain, takes 37328873106309db515d58889a4c4fa3e0a92d1b60eMon P Wang /// 3 operands 374ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth SDOperand getAtomic(unsigned Opcode, SDOperand Chain, SDOperand Ptr, 375fd4418fc9b4725c44210c169c4d6500be468ca70Dan Gohman SDOperand Cmp, SDOperand Swp, const Value* PtrVal, 37628873106309db515d58889a4c4fa3e0a92d1b60eMon P Wang unsigned Alignment=0); 377ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 378ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth /// getAtomic - Gets a node for an atomic op, produces result and chain, takes 37928873106309db515d58889a4c4fa3e0a92d1b60eMon P Wang /// 2 operands 380ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth SDOperand getAtomic(unsigned Opcode, SDOperand Chain, SDOperand Ptr, 381fd4418fc9b4725c44210c169c4d6500be468ca70Dan Gohman SDOperand Val, const Value* PtrVal, 38228873106309db515d58889a4c4fa3e0a92d1b60eMon P Wang unsigned Alignment = 0); 383ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 3844bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands /// getMergeValues - Create a MERGE_VALUES node from the given operands. 3854bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands /// Allowed to return something different (and simpler) if Simplify is true. 3864bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands SDOperand getMergeValues(SDOperandPtr Ops, unsigned NumOps, 3874bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands bool Simplify = true); 3884bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands 389f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands /// getMergeValues - Create a MERGE_VALUES node from the given types and ops. 390f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands /// Allowed to return something different (and simpler) if Simplify is true. 3914bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands /// May be faster than the above version if VTs is known and NumOps is large. 392f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands SDOperand getMergeValues(SDVTList VTs, SDOperandPtr Ops, unsigned NumOps, 393f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands bool Simplify = true) { 394f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands if (Simplify && NumOps == 1) 395f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands return Ops[0]; 396f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands return getNode(ISD::MERGE_VALUES, VTs, Ops, NumOps); 397f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands } 398f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands 399c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 400c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 401cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 40283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getLoad(MVT VT, SDOperand Chain, SDOperand Ptr, 40395c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 40495c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 40583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand getExtLoad(ISD::LoadExtType ExtType, MVT VT, 40624446e253a17720f6462288255ab5ebd13b8491fEvan Cheng SDOperand Chain, SDOperand Ptr, const Value *SV, 40783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int SVOffset, MVT EVT, bool isVolatile=false, 40895c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 4098862ef148100070b7bf28beead3951464250c926Evan Cheng SDOperand getIndexedLoad(SDOperand OrigLoad, SDOperand Base, 410144d8f09e139f691cafadbc17873943ba4c465f3Evan Cheng SDOperand Offset, ISD::MemIndexedMode AM); 411e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands SDOperand getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType, 41283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT, SDOperand Chain, 413e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands SDOperand Ptr, SDOperand Offset, 41483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const Value *SV, int SVOffset, MVT EVT, 415e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands bool isVolatile=false, unsigned Alignment=0); 4162d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 417ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// getStore - Helper function to build ISD::STORE nodes. 418ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// 419d41b30def3181bce4bf87e8bde664d15663165d0Jeff Cohen SDOperand getStore(SDOperand Chain, SDOperand Val, SDOperand Ptr, 42095c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 42195c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 422d41b30def3181bce4bf87e8bde664d15663165d0Jeff Cohen SDOperand getTruncStore(SDOperand Chain, SDOperand Val, SDOperand Ptr, 42383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const Value *SV, int SVOffset, MVT TVT, 42495c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb bool isVolatile=false, unsigned Alignment=0); 4259109fb1eb7d3341727353777c2a4282aa1a0c39aEvan Cheng SDOperand getIndexedStore(SDOperand OrigStoe, SDOperand Base, 426144d8f09e139f691cafadbc17873943ba4c465f3Evan Cheng SDOperand Offset, ISD::MemIndexedMode AM); 427ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng 42869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman // getSrcValue - Construct a node to track a Value* through the backend. 42969de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman SDOperand getSrcValue(const Value *v); 43069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 43169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman // getMemOperand - Construct a node to track a memory reference 43269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman // through the backend. 43336b5c1338a03453ba1c110b120269ca972fb65a3Dan Gohman SDOperand getMemOperand(const MachineMemOperand &MO); 434cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 435b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 436b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 437b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 438b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 439b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 440b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 441b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op); 442b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2); 443b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 444b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3); 445b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 446b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3, SDOperand Op4); 4479b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 4489b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand Op3, SDOperand Op4, SDOperand Op5); 4499cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperand UpdateNodeOperands(SDOperand N, SDOperandPtr Ops, unsigned NumOps); 4501b95095857b78e12138c22e76c7936611c51355bChris Lattner 4511b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 4521b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 4531b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 454eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// ISD::BUILTIN_OP_END+TargetOpcode in the node opcode field. The 0th value 455eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// of the resultant node is returned. 45683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT); 45783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, SDOperand Op1); 45883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 45995514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1, SDOperand Op2); 46083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 46195514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 46283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 4639cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 464cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, MVT VT2); 465cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 466cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman MVT VT2, SDOperandPtr Ops, unsigned NumOps); 467cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 468cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman MVT VT2, MVT VT3, SDOperandPtr Ops, unsigned NumOps); 469cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 470cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman MVT VT2, SDOperand Op1); 47183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 47283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT2, SDOperand Op1, SDOperand Op2); 47383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 47483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT2, SDOperand Op1, SDOperand Op2, SDOperand Op3); 475cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, SDVTList VTs, 476cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDOperandPtr Ops, unsigned NumOps); 477694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng 478753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 4796ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// getTargetNode - These are used for target selectors to create a new node 4806ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// with specified return type(s), target opcode, and operands. 4816ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 4826ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// Note that getTargetNode returns the resultant node. If there is already a 4836ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// node of the specified opcode and operands, it returns that node instead of 4846ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// the current one. 48583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT); 48683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT, SDOperand Op1); 48783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT, SDOperand Op1, SDOperand Op2); 48883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT, 4896ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 49083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT, 4919cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 49283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2); 49383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, SDOperand Op1); 49483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, 49583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT2, SDOperand Op1, SDOperand Op2); 49683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, 49783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT2, SDOperand Op1, SDOperand Op2, SDOperand Op3); 49883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, 4999cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 50083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 5016ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 50283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 503b3a0417cad8b625acc3033bd5e24afb9ffd0b084Lauro Ramos Venancio SDOperand Op1, SDOperand Op2, SDOperand Op3); 50483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 5059cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 50683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, MVT VT4, 5079cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 50883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, std::vector<MVT> &ResultTys, 5099cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 51008b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng 51108b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// getNodeIfExists - Get the specified node if it's already available, or 51208b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// else return NULL. 51308b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng SDNode *getNodeIfExists(unsigned Opcode, SDVTList VTs, 5149cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 5156542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner 516f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// DAGUpdateListener - Clients of various APIs that cause global effects on 517f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// the DAG can optionally implement this interface. This allows the clients 518f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// to handle the various sorts of updates that happen. 519f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner class DAGUpdateListener { 520f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner public: 521f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual ~DAGUpdateListener(); 522edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 523edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeDeleted - The node N that was deleted and, if E is not null, an 524edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// equivalent node E that replaced it. 525edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands virtual void NodeDeleted(SDNode *N, SDNode *E) = 0; 526edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 527edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeUpdated - The node N that was updated. 528f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual void NodeUpdated(SDNode *N) = 0; 529f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner }; 530f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner 531f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// RemoveDeadNode - Remove the specified node from the system. If any of its 532f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// operands then becomes dead, remove them as well. Inform UpdateListener 533f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// for each node deleted. 534f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner void RemoveDeadNode(SDNode *N, DAGUpdateListener *UpdateListener = 0); 535f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner 5366542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 53726005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 53826005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 53926005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// if you have two nodes with identical results, use the third otherwise. 5406542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 541f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// These methods all take an optional UpdateListener, which (if not null) is 542f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// informed about nodes that are deleted and modified due to recursive 543f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// changes in the dag. 544fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 545fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDOperand From, SDOperand Op, 546f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 547fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 548f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 5499cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein void ReplaceAllUsesWith(SDNode *From, SDOperandPtr To, 550f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 551fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 55280274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 553f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// uses of other values produced by From.Val alone. 55480274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner void ReplaceAllUsesOfValueWith(SDOperand From, SDOperand To, 555f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 55680274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 557e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignNodeIds - Assign a unique node id for each node in the DAG based on 558e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// their allnodes order. It returns the maximum id. 5597c16d776cb827922dd0f8f0a88c5b65a90810c0bEvan Cheng unsigned AssignNodeIds(); 560b9ee9e60a905b90fa3e84c5c6091af6e5a0382d2Evan Cheng 561e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignTopologicalOrder - Assign a unique node id for each node in the DAG 56209fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// based on their topological order. It returns the maximum id and a vector 56309fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// of the SDNodes* in assigned order by reference. 56409fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng unsigned AssignTopologicalOrder(std::vector<SDNode*> &TopOrder); 565e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng 5661efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// isCommutativeBinOp - Returns true if the opcode is a commutative binary 5671efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// operation. 5681efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng static bool isCommutativeBinOp(unsigned Opcode) { 5694ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // FIXME: This should get its info from the td file, so that we can include 5704ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // target info. 5711efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng switch (Opcode) { 5721efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADD: 5731efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MUL: 5741efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHU: 5751efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHS: 576b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::SMUL_LOHI: 577b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::UMUL_LOHI: 5781efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FADD: 5791efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FMUL: 5801efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::AND: 5811efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::OR: 5821efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::XOR: 5831efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDC: 5841efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDE: return true; 5851efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng default: return false; 5861efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 5871efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 5881efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng 589cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 590d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 59137ce9df0da6cddc3b8bfef9b63d33d058a0f2f15Chris Lattner /// CreateStackTemporary - Create a stack temporary, suitable for holding the 592bee98c66c0c3d1f43244cdf237e572a9df031e40Mon P Wang /// specified value type. If minAlign is specified, the slot size will have 593bee98c66c0c3d1f43244cdf237e572a9df031e40Mon P Wang /// at least that alignment. 5946ed2d1ecdbac0fe9c34cfc6ab5c985dc0c71a1d7Mon P Wang SDOperand CreateStackTemporary(MVT VT, unsigned minAlign = 1); 595bee98c66c0c3d1f43244cdf237e572a9df031e40Mon P Wang 59651dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner /// FoldSetCC - Constant fold a setcc to true or false. 59783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDOperand FoldSetCC(MVT VT, SDOperand N1, 59851dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner SDOperand N2, ISD::CondCode Cond); 59951dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner 6002e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// SignBitIsZero - Return true if the sign bit of Op is known to be zero. We 6012e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// use this predicate to simplify operations downstream. 6022e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman bool SignBitIsZero(SDOperand Op, unsigned Depth = 0) const; 6032e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman 604ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// MaskedValueIsZero - Return true if 'Op & Mask' is known to be zero. We 605ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// use this predicate to simplify operations downstream. Op and Mask are 606ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be the same type. 6072e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman bool MaskedValueIsZero(SDOperand Op, const APInt &Mask, unsigned Depth = 0) 608ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman const; 609ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 610ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeMaskedBits - Determine which of the bits specified in Mask are 611ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be either zero or one and return them in the KnownZero/KnownOne 612ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// bitsets. This code only analyzes bits in Mask, in order to short-circuit 613ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// processing. Targets can implement the computeMaskedBitsForTargetNode 614ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// method in the TargetLowering class to allow target nodes to be understood. 615977a76fbb6ea1b87dfd7fbbe2ae2afb63e982ff3Dan Gohman void ComputeMaskedBits(SDOperand Op, const APInt &Mask, APInt &KnownZero, 616fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman APInt &KnownOne, unsigned Depth = 0) const; 617fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman 618ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeNumSignBits - Return the number of times the sign bit of the 619ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// register is replicated into the other bits. We know that at least 1 bit 620ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// is always equal to the sign bit (itself), but other cases can give us 621ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// information. For example, immediately after an "SRA X, 2", we know that 622ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// the top 3 bits are all equal to each other, so we return 3. Targets can 623ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// implement the ComputeNumSignBitsForTarget method in the TargetLowering 624ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// class to allow target nodes to be understood. 625ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman unsigned ComputeNumSignBits(SDOperand Op, unsigned Depth = 0) const; 626a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng 627a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng /// isVerifiedDebugInfoDesc - Returns true if the specified SDOperand has 628a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng /// been verified as a debug information descriptor. 629a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng bool isVerifiedDebugInfoDesc(SDOperand Op) const; 63077f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng 63177f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// getShuffleScalarElt - Returns the scalar element that will make up the ith 63277f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// element of the result of the vector shuffle. 63377f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng SDOperand getShuffleScalarElt(const SDNode *N, unsigned Idx); 634ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 635d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 6361b95095857b78e12138c22e76c7936611c51355bChris Lattner void RemoveNodeFromCSEMaps(SDNode *N); 6376542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner SDNode *AddNonLeafNodeToCSEMaps(SDNode *N); 638a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op, void *&InsertPos); 639a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op1, SDOperand Op2, 640a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 6419cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDNode *FindModifiedNodeSlot(SDNode *N, SDOperandPtr Ops, unsigned NumOps, 642a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 643b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 644fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 6457cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 646109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner // List of non-single value types. 64783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands std::list<std::vector<MVT> > VTList; 648109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 6491cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner // Maps to auto-CSE operations. 6507cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 6511cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 65215e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 6538e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands std::map<MVT, SDNode*, MVT::compareRawBits> ExtendedValueTypeNodes; 6544b84086e89d86fb16f562166d9fea8df37db6be7Dan Gohman StringMap<SDNode*> ExternalSymbols; 6554b84086e89d86fb16f562166d9fea8df37db6be7Dan Gohman StringMap<SDNode*> TargetExternalSymbols; 656cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 657cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 6581080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 6591080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 6601080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 6611080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 6621080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 6631080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 6641080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 6651080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 6661080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 6671080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 668b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 669cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 670cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 671