SelectionDAG.h revision 01d029b82cb08367d81aa10cdc94d05360466649
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 18583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey#include "llvm/ADT/FoldingSet.h" 19b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner#include "llvm/ADT/ilist" 20583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey#include "llvm/CodeGen/SelectionDAGNodes.h" 21b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 22109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner#include <list> 235892d47a625638a90afeb31dd4f6f80a2f9bacdeChris Lattner#include <vector> 24322812e603705e1c2037313633e72f689524b163Evan Cheng#include <map> 25322812e603705e1c2037313633e72f689524b163Evan Cheng#include <set> 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; 35c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 36c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// SelectionDAG class - This is used to represent a portion of an LLVM function 37c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// in a low-level Data Dependence DAG representation suitable for instruction 38c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection. This DAG is constructed as the first step of instruction 39c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection in order to allow implementation of machine specific optimizations 40c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// and code simplifications. 41c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// 42c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// The representation used by the SelectionDAG is a target-independent 43c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// representation, which has some similarities to the GCC RTL representation, 44c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// but is significantly more simple, powerful, and is a graph form instead of a 45c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// linear form. 46cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner/// 47cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerclass SelectionDAG { 48063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &TLI; 49c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &MF; 5044c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey MachineModuleInfo *MMI; 51cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 52213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// Root - The root of the entire DAG. EntryNode - The starting token. 53c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand Root, EntryNode; 54cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 55213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// AllNodes - A linked list of nodes in the current DAG. 56b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner ilist<SDNode> AllNodes; 57691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 58213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSEMap - This structure is used to memoize nodes, automatically performing 59213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSE with existing nodes with a duplicate is requested. 60583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey FoldingSet<SDNode> CSEMap; 61213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner 62cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerpublic: 6344c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey SelectionDAG(TargetLowering &tli, MachineFunction &mf, MachineModuleInfo *mmi) 6444c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey : TLI(tli), MF(mf), MMI(mmi) { 65c3aae25116e66c177579b0b79182b09340b19753Chris Lattner EntryNode = Root = getNode(ISD::EntryToken, MVT::Other); 66c3aae25116e66c177579b0b79182b09340b19753Chris Lattner } 67cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner ~SelectionDAG(); 68cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 69c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &getMachineFunction() const { return MF; } 70063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner const TargetMachine &getTarget() const; 71063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &getTargetLoweringInfo() const { return TLI; } 7244c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey MachineModuleInfo *getMachineModuleInfo() const { return MMI; } 73cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 74ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// viewGraph - Pop up a GraphViz/gv window with the DAG rendered using 'dot'. 751080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner /// 761080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner void viewGraph(); 77ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 78ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#ifndef NDEBUG 79ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey std::map<const SDNode *, std::string> NodeGraphAttrs; 80ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#endif 811080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 82ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// clearGraphAttrs - Clear all previously defined node graph attributes. 83ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Intended to be used from a debugging tool (eg. gdb). 84ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void clearGraphAttrs(); 85ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 86ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".) 87ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 88ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphAttrs(const SDNode *N, const char *Attrs); 89ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 90ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".) 91ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Used from getNodeAttributes. 92ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey const std::string getGraphAttrs(const SDNode *N) const; 93ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 94ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphColor - Convenience for setting node color attribute. 95ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 96ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphColor(const SDNode *N, const char *Color); 971080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 98b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner typedef ilist<SDNode>::const_iterator allnodes_const_iterator; 99b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); } 100b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_end() const { return AllNodes.end(); } 101b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner typedef ilist<SDNode>::iterator allnodes_iterator; 102b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_begin() { return AllNodes.begin(); } 103b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_end() { return AllNodes.end(); } 104b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 105c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getRoot - Return the root tag of the SelectionDAG. 106cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 107c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &getRoot() const { return Root; } 108cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 109c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getEntryNode - Return the token chain corresponding to the entry of the 110c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// function. 111c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &getEntryNode() const { return EntryNode; } 112cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 113c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// setRoot - Set the current root tag of the SelectionDAG. 114cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 115c3aae25116e66c177579b0b79182b09340b19753Chris Lattner const SDOperand &setRoot(SDOperand N) { return Root = N; } 116cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1171d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// Combine - This iterates over the nodes in the SelectionDAG, folding 1181d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// certain types of nodes together, or eliminating superfluous nodes. When 1191d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// the AfterLegalize argument is set to 'true', Combine takes care not to 1201d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// generate any nodes that will be illegal on the target. 121c7c3f110eda0ff8040e4bd99e38d3112b910810fJim Laskey void Combine(bool AfterLegalize, AliasAnalysis &AA); 1221d4d41411190dd9e62764e56713753d4155764ddNate Begeman 12301d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// LegalizeTypes - This transforms the SelectionDAG into a SelectionDAG that 12401d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// only uses types natively supported by the target. 12501d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// 12601d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// Note that this is an involved process that may invalidate pointers into 12701d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// the graph. 12801d029b82cb08367d81aa10cdc94d05360466649Chris Lattner void LegalizeTypes(); 12901d029b82cb08367d81aa10cdc94d05360466649Chris Lattner 130c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Legalize - This transforms the SelectionDAG into a SelectionDAG that is 131c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// compatible with the target instruction selector, as indicated by the 132c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// TargetLowering object. 133cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 134c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Note that this is an involved process that may invalidate pointers into 135c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// the graph. 136063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner void Legalize(); 137c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 138d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// RemoveDeadNodes - This method deletes all unreachable nodes in the 139190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner /// SelectionDAG. 140190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner void RemoveDeadNodes(); 141130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 142130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// RemoveDeadNode - Remove the specified node from the system. If any of its 143130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// operands then becomes dead, remove them as well. The vector Deleted is 144130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// populated with nodes that are deleted. 145130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng void RemoveDeadNode(SDNode *N, std::vector<SDNode*> &Deleted); 14670046e920fa37989a041af663ada2b2b646e258fChris Lattner 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. 15370046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT); 15470046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT1, MVT::ValueType VT2); 15570046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT1, MVT::ValueType VT2,MVT::ValueType VT3); 15670046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(const MVT::ValueType *VTs, unsigned NumVTs); 15770046e920fa37989a041af663ada2b2b646e258fChris Lattner 15870046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getNodeValueTypes - These are obsolete, use getVTList instead. 15970046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT) { 16070046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT).VTs; 16170046e920fa37989a041af663ada2b2b646e258fChris Lattner } 16270046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1, 16370046e920fa37989a041af663ada2b2b646e258fChris Lattner MVT::ValueType VT2) { 16470046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2).VTs; 16570046e920fa37989a041af663ada2b2b646e258fChris Lattner } 16670046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1,MVT::ValueType VT2, 16770046e920fa37989a041af663ada2b2b646e258fChris Lattner MVT::ValueType VT3) { 16870046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2, VT3).VTs; 16970046e920fa37989a041af663ada2b2b646e258fChris Lattner } 17070046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(std::vector<MVT::ValueType> &VTList) { 17170046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(&VTList[0], VTList.size()).VTs; 17270046e920fa37989a041af663ada2b2b646e258fChris Lattner } 17370046e920fa37989a041af663ada2b2b646e258fChris Lattner 17470046e920fa37989a041af663ada2b2b646e258fChris Lattner 1751b1a49714ef26225a42199cf2930529f31868322Chris Lattner //===--------------------------------------------------------------------===// 17670046e920fa37989a041af663ada2b2b646e258fChris Lattner // Node creation methods. 17770046e920fa37989a041af663ada2b2b646e258fChris Lattner // 17847725d059b259f8a0c145478300c9e9caa006b59Chris Lattner SDOperand getString(const std::string &Val); 179cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner SDOperand getConstant(uint64_t Val, MVT::ValueType VT, bool isTarget = false); 180cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner SDOperand getTargetConstant(uint64_t Val, MVT::ValueType VT) { 181cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getConstant(Val, VT, true); 182cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 183c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getConstantFP(double Val, MVT::ValueType VT, bool isTarget = false); 184f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen SDOperand getConstantFP(const APFloat& Val, MVT::ValueType VT, 185f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen bool isTarget = false); 186c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getTargetConstantFP(double Val, MVT::ValueType VT) { 187c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantFP(Val, VT, true); 188c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 189f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen SDOperand getTargetConstantFP(const APFloat& Val, MVT::ValueType VT) { 190f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen return getConstantFP(Val, VT, true); 191f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen } 19214229bb6369c110644c11bc7906b0c1167d3a87aEvan Cheng SDOperand getGlobalAddress(const GlobalValue *GV, MVT::ValueType VT, 193cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner int offset = 0, bool isTargetGA = false); 19461ca74bc3a29b2af2be7e4bd612289da8aae85b5Evan Cheng SDOperand getTargetGlobalAddress(const GlobalValue *GV, MVT::ValueType VT, 195cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner int offset = 0) { 196cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getGlobalAddress(GV, VT, offset, true); 197cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 198c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getFrameIndex(int FI, MVT::ValueType VT, bool isTarget = false); 199c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getTargetFrameIndex(int FI, MVT::ValueType VT) { 200c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getFrameIndex(FI, VT, true); 201c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 202c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getJumpTable(int JTI, MVT::ValueType VT, bool isTarget = false); 203c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner SDOperand getTargetJumpTable(int JTI, MVT::ValueType VT) { 204c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getJumpTable(JTI, VT, true); 205c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 206b8973bd8f50d7321635e1e07b81a880a0828d185Evan Cheng SDOperand getConstantPool(Constant *C, MVT::ValueType VT, 207c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offs = 0, bool isT=false); 208b8973bd8f50d7321635e1e07b81a880a0828d185Evan Cheng SDOperand getTargetConstantPool(Constant *C, MVT::ValueType VT, 209c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offset = 0) { 210c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantPool(C, VT, Align, Offset, true); 211c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 212d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng SDOperand getConstantPool(MachineConstantPoolValue *C, MVT::ValueType VT, 213d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng unsigned Align = 0, int Offs = 0, bool isT=false); 214d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng SDOperand getTargetConstantPool(MachineConstantPoolValue *C, 215d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng MVT::ValueType VT, unsigned Align = 0, 216d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng int Offset = 0) { 217d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng return getConstantPool(C, VT, Align, Offset, true); 218d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng } 219c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getBasicBlock(MachineBasicBlock *MBB); 220c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getExternalSymbol(const char *Sym, MVT::ValueType VT); 2212a2de66db2093a5bc1fd620d1b6ae7992a552b24Andrew Lenharth SDOperand getTargetExternalSymbol(const char *Sym, MVT::ValueType VT); 22215e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner SDOperand getValueType(MVT::ValueType); 223d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getRegister(unsigned Reg, MVT::ValueType VT); 224c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 225d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N) { 226d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner return getNode(ISD::CopyToReg, MVT::Other, Chain, 227d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner getRegister(Reg, N.getValueType()), N); 228cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner } 229cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 230e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 231e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 232e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 233e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N, 234e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 2352fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 236bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag }; 2372fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 238e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 23966a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 24066a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng // Similar to last getCopyToReg() except parameter Reg is a SDOperand 24166a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand getCopyToReg(SDOperand Chain, SDOperand Reg, SDOperand N, 24266a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand Flag) { 2432fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 244bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner SDOperand Ops[] = { Chain, Reg, N, Flag }; 2452fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 24666a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng } 247e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 248d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT) { 2492fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(VT, MVT::Other); 250f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, VT) }; 2512fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 2, Ops, 2); 25218c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner } 253e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 254e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 255e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 256e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 257e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT, 258e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 2592fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(VT, MVT::Other, MVT::Flag); 260f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, VT), Flag }; 2612fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 3, Ops, Flag.Val ? 3 : 2); 262e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 26318c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 2647cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getCondCode(ISD::CondCode Cond); 265cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 2661ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 2671ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 2681ccae666f596d5aeca5c9942995763600b622062Chris Lattner SDOperand getZeroExtendInReg(SDOperand Op, MVT::ValueType SrcTy); 2696a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner 2706a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 2716a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// a flag result (to ensure it's not CSE'd). 2726a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner SDOperand getCALLSEQ_START(SDOperand Chain, SDOperand Op) { 2732fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 274f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, Op }; 2752fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CALLSEQ_START, VTs, 2, Ops, 2); 2766a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 2771ccae666f596d5aeca5c9942995763600b622062Chris Lattner 278c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 279cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 280c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT); 281c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, SDOperand N); 282c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 283c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2); 284c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 285c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2, SDOperand N3); 286c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 2872d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4); 2882d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 289f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4, 290f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N5); 291f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 292f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner const SDOperand *Ops, unsigned NumOps); 293f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand getNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys, 294f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner const SDOperand *Ops, unsigned NumOps); 2952fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner SDOperand getNode(unsigned Opcode, const MVT::ValueType *VTs, unsigned NumVTs, 2962fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const SDOperand *Ops, unsigned NumOps); 29708ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs); 29808ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, SDOperand N); 29908ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 30008ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2); 30108ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 30208ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2, SDOperand N3); 30308ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 30408ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4); 30508ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 30608ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4, 30708ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N5); 30867bb42aa5957bb24c0604cc08243cde9fe938e94Chris Lattner SDOperand getNode(unsigned Opcode, SDVTList VTs, 30967bb42aa5957bb24c0604cc08243cde9fe938e94Chris Lattner const SDOperand *Ops, unsigned NumOps); 310f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner 3117cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 3127cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// have an ISD::CondCode instead of an SDOperand. 3137cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 3147cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getSetCC(MVT::ValueType VT, SDOperand LHS, SDOperand RHS, 3157cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner ISD::CondCode Cond) { 3167cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner return getNode(ISD::SETCC, VT, LHS, RHS, getCondCode(Cond)); 3177cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 3189373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 3199373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 3209373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// just have an ISD::CondCode instead of an SDOperand. 3219373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 3229373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand getSelectCC(SDOperand LHS, SDOperand RHS, 3239373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand True, SDOperand False, ISD::CondCode Cond) { 3242fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::SELECT_CC, True.getValueType(), LHS, RHS, True, False, 3252fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner getCondCode(Cond)); 3269373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 3277cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 328acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 329acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 330acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand getVAArg(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr, 331acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand SV); 3327cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 333c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 334c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 335cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 33621074f43ed5165828717ea3606eb2bd222a39b26Chris Lattner SDOperand getLoad(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr, 33795c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 33895c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 33924446e253a17720f6462288255ab5ebd13b8491fEvan Cheng SDOperand getExtLoad(ISD::LoadExtType ExtType, MVT::ValueType VT, 34024446e253a17720f6462288255ab5ebd13b8491fEvan Cheng SDOperand Chain, SDOperand Ptr, const Value *SV, 34195c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb int SVOffset, MVT::ValueType EVT, bool isVolatile=false, 34295c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 3438862ef148100070b7bf28beead3951464250c926Evan Cheng SDOperand getIndexedLoad(SDOperand OrigLoad, SDOperand Base, 344144d8f09e139f691cafadbc17873943ba4c465f3Evan Cheng SDOperand Offset, ISD::MemIndexedMode AM); 3452d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 346ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// getStore - Helper function to build ISD::STORE nodes. 347ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// 348d41b30def3181bce4bf87e8bde664d15663165d0Jeff Cohen SDOperand getStore(SDOperand Chain, SDOperand Val, SDOperand Ptr, 34995c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 35095c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 351d41b30def3181bce4bf87e8bde664d15663165d0Jeff Cohen SDOperand getTruncStore(SDOperand Chain, SDOperand Val, SDOperand Ptr, 3528b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng const Value *SV, int SVOffset, MVT::ValueType TVT, 35395c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb bool isVolatile=false, unsigned Alignment=0); 3549109fb1eb7d3341727353777c2a4282aa1a0c39aEvan Cheng SDOperand getIndexedStore(SDOperand OrigStoe, SDOperand Base, 355144d8f09e139f691cafadbc17873943ba4c465f3Evan Cheng SDOperand Offset, ISD::MemIndexedMode AM); 356ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng 3572d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth // getSrcValue - construct a node to track a Value* through the backend 358691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth SDOperand getSrcValue(const Value* I, int offset = 0); 359cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 360b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 361b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 362b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 363b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 364b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 365b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 366b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op); 367b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2); 368b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 369b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3); 370b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 371b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3, SDOperand Op4); 3729b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 3739b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand Op3, SDOperand Op4, SDOperand Op5); 374f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand *Ops, unsigned NumOps); 3751b95095857b78e12138c22e76c7936611c51355bChris Lattner 3761b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 3771b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 3781b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 379eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// ISD::BUILTIN_OP_END+TargetOpcode in the node opcode field. The 0th value 380eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// of the resultant node is returned. 38195514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT); 38295514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 38395514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1); 38495514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 38595514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1, SDOperand Op2); 38695514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 38795514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 388694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 389694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng const SDOperand *Ops, unsigned NumOps); 39095514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 39195514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2); 39295514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 39395514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 39495514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op3); 395694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng 396753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 3976ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// getTargetNode - These are used for target selectors to create a new node 3986ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// with specified return type(s), target opcode, and operands. 3996ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 4006ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// Note that getTargetNode returns the resultant node. If there is already a 4016ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// node of the specified opcode and operands, it returns that node instead of 4026ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// the current one. 4036ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT); 4046ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 4056ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1); 4066ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 4076ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 4086ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 4096ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 4106ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 411bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner const SDOperand *Ops, unsigned NumOps); 4126ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 4136eaeff29b8a6990107735f7e5f5e49da38f56223Dale Johannesen MVT::ValueType VT2); 4146eaeff29b8a6990107735f7e5f5e49da38f56223Dale Johannesen SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 4156ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1); 4166ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 4176ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2); 4186ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 4196ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 4206ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3); 421694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 422694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng MVT::ValueType VT2, 423694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng const SDOperand *Ops, unsigned NumOps); 4246ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 4256ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 4266ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 427b3a0417cad8b625acc3033bd5e24afb9ffd0b084Lauro Ramos Venancio SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 428b3a0417cad8b625acc3033bd5e24afb9ffd0b084Lauro Ramos Venancio MVT::ValueType VT2, MVT::ValueType VT3, 429b3a0417cad8b625acc3033bd5e24afb9ffd0b084Lauro Ramos Venancio SDOperand Op1, SDOperand Op2, SDOperand Op3); 4306ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 431694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 432bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner const SDOperand *Ops, unsigned NumOps); 43305e69c1f23f1097530fcbc7be97f99d696c019a2Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 43405e69c1f23f1097530fcbc7be97f99d696c019a2Evan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 43505e69c1f23f1097530fcbc7be97f99d696c019a2Evan Cheng MVT::ValueType VT4, 43605e69c1f23f1097530fcbc7be97f99d696c019a2Evan Cheng const SDOperand *Ops, unsigned NumOps); 43739305cf55363046162c5a992f96f26d607a204e5Evan Cheng SDNode *getTargetNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys, 43839305cf55363046162c5a992f96f26d607a204e5Evan Cheng const SDOperand *Ops, unsigned NumOps); 4396542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner 4406542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 44126005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 44226005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 44326005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// if you have two nodes with identical results, use the third otherwise. 4446542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 445fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// These methods all take an optional vector, which (if not null) is 446fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// populated with any nodes that are deleted from the SelectionDAG, due to 447fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// new equivalences that are discovered. 448fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 449fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDOperand From, SDOperand Op, 450fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 451fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 452fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 4538a842cf8287ee957e15b95ceeb6ee5f189caba3dChris Lattner void ReplaceAllUsesWith(SDNode *From, const SDOperand *To, 454fde3f3061d665babeb78443119a09876098fc35eChris Lattner std::vector<SDNode*> *Deleted = 0); 455fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 45680274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 45780274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// uses of other values produced by From.Val alone. The Deleted vector is 45880274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// handled the same was as for ReplaceAllUsesWith, but it is required for 45980274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// this method. 46080274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner void ReplaceAllUsesOfValueWith(SDOperand From, SDOperand To, 46101d029b82cb08367d81aa10cdc94d05360466649Chris Lattner std::vector<SDNode*> *Deleted = 0); 46280274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 463e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignNodeIds - Assign a unique node id for each node in the DAG based on 464e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// their allnodes order. It returns the maximum id. 4657c16d776cb827922dd0f8f0a88c5b65a90810c0bEvan Cheng unsigned AssignNodeIds(); 466b9ee9e60a905b90fa3e84c5c6091af6e5a0382d2Evan Cheng 467e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignTopologicalOrder - Assign a unique node id for each node in the DAG 46809fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// based on their topological order. It returns the maximum id and a vector 46909fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// of the SDNodes* in assigned order by reference. 47009fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng unsigned AssignTopologicalOrder(std::vector<SDNode*> &TopOrder); 471e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng 4721efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// isCommutativeBinOp - Returns true if the opcode is a commutative binary 4731efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// operation. 4741efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng static bool isCommutativeBinOp(unsigned Opcode) { 4751efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng switch (Opcode) { 4761efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADD: 4771efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MUL: 4781efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHU: 4791efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHS: 480b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::SMUL_LOHI: 481b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::UMUL_LOHI: 4821efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FADD: 4831efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FMUL: 4841efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::AND: 4851efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::OR: 4861efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::XOR: 4871efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDC: 4881efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDE: return true; 4891efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng default: return false; 4901efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 4911efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 4921efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng 493cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 494d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 49551dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner /// FoldSetCC - Constant fold a setcc to true or false. 49651dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner SDOperand FoldSetCC(MVT::ValueType VT, SDOperand N1, 49751dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner SDOperand N2, ISD::CondCode Cond); 49851dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner 499ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// MaskedValueIsZero - Return true if 'Op & Mask' is known to be zero. We 500ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// use this predicate to simplify operations downstream. Op and Mask are 501ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be the same type. 502ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman bool MaskedValueIsZero(SDOperand Op, uint64_t Mask, unsigned Depth = 0) 503ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman const; 504ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 505ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeMaskedBits - Determine which of the bits specified in Mask are 506ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be either zero or one and return them in the KnownZero/KnownOne 507ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// bitsets. This code only analyzes bits in Mask, in order to short-circuit 508ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// processing. Targets can implement the computeMaskedBitsForTargetNode 509ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// method in the TargetLowering class to allow target nodes to be understood. 510ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman void ComputeMaskedBits(SDOperand Op, uint64_t Mask, uint64_t &KnownZero, 511ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman uint64_t &KnownOne, unsigned Depth = 0) const; 512ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 513ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeNumSignBits - Return the number of times the sign bit of the 514ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// register is replicated into the other bits. We know that at least 1 bit 515ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// is always equal to the sign bit (itself), but other cases can give us 516ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// information. For example, immediately after an "SRA X, 2", we know that 517ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// the top 3 bits are all equal to each other, so we return 3. Targets can 518ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// implement the ComputeNumSignBitsForTarget method in the TargetLowering 519ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// class to allow target nodes to be understood. 520ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman unsigned ComputeNumSignBits(SDOperand Op, unsigned Depth = 0) const; 521ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 522d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 5231b95095857b78e12138c22e76c7936611c51355bChris Lattner void RemoveNodeFromCSEMaps(SDNode *N); 5246542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner SDNode *AddNonLeafNodeToCSEMaps(SDNode *N); 525a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op, void *&InsertPos); 526a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op1, SDOperand Op2, 527a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 528f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, const SDOperand *Ops, unsigned NumOps, 529a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 530b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 531fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 5327cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 533109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner // List of non-single value types. 534109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner std::list<std::vector<MVT::ValueType> > VTList; 535109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 5361cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner // Maps to auto-CSE operations. 5377cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 5381cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 53915e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 5405f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner std::map<std::string, SDNode*> ExternalSymbols; 5412a2de66db2093a5bc1fd620d1b6ae7992a552b24Andrew Lenharth std::map<std::string, SDNode*> TargetExternalSymbols; 54247725d059b259f8a0c145478300c9e9caa006b59Chris Lattner std::map<std::string, StringSDNode*> StringNodes; 543cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 544cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 5451080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 5461080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 5471080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 5481080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 5491080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 5501080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 5511080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 5521080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 5531080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 5541080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 555b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 556cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 557cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 558