SelectionDAG.h revision 43d1fd449f1a0ac9d9dafa0b9569bb6b2e976198
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" 1943d1fd449f1a0ac9d9dafa0b9569bb6b2e976198Anton Korobeynikov#include "llvm/ADT/ilist.h" 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 /// DeleteNode - Remove the specified node from the system. This node must 143130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// have no referrers. 144130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng void DeleteNode(SDNode *N); 145130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 14670046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getVTList - Return an SDVTList that represents the list of values 14770046e920fa37989a041af663ada2b2b646e258fChris Lattner /// specified. 14870046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT); 14970046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT1, MVT::ValueType VT2); 15070046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(MVT::ValueType VT1, MVT::ValueType VT2,MVT::ValueType VT3); 15170046e920fa37989a041af663ada2b2b646e258fChris Lattner SDVTList getVTList(const MVT::ValueType *VTs, unsigned NumVTs); 15270046e920fa37989a041af663ada2b2b646e258fChris Lattner 15370046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getNodeValueTypes - These are obsolete, use getVTList instead. 15470046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT) { 15570046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT).VTs; 15670046e920fa37989a041af663ada2b2b646e258fChris Lattner } 15770046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1, 15870046e920fa37989a041af663ada2b2b646e258fChris Lattner MVT::ValueType VT2) { 15970046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2).VTs; 16070046e920fa37989a041af663ada2b2b646e258fChris Lattner } 16170046e920fa37989a041af663ada2b2b646e258fChris Lattner const MVT::ValueType *getNodeValueTypes(MVT::ValueType VT1,MVT::ValueType VT2, 16270046e920fa37989a041af663ada2b2b646e258fChris Lattner MVT::ValueType VT3) { 16370046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2, VT3).VTs; 16470046e920fa37989a041af663ada2b2b646e258fChris Lattner } 16513d57320bd212483463d4f8992d5787b29eda5dfBill Wendling const MVT::ValueType *getNodeValueTypes(std::vector<MVT::ValueType> &vtList) { 16613d57320bd212483463d4f8992d5787b29eda5dfBill Wendling return getVTList(&vtList[0], (unsigned)vtList.size()).VTs; 16770046e920fa37989a041af663ada2b2b646e258fChris Lattner } 16870046e920fa37989a041af663ada2b2b646e258fChris Lattner 16970046e920fa37989a041af663ada2b2b646e258fChris Lattner 1701b1a49714ef26225a42199cf2930529f31868322Chris Lattner //===--------------------------------------------------------------------===// 17170046e920fa37989a041af663ada2b2b646e258fChris Lattner // Node creation methods. 17270046e920fa37989a041af663ada2b2b646e258fChris Lattner // 17347725d059b259f8a0c145478300c9e9caa006b59Chris Lattner SDOperand getString(const std::string &Val); 174cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner SDOperand getConstant(uint64_t Val, MVT::ValueType VT, bool isTarget = false); 1756394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman SDOperand getConstant(const APInt &Val, MVT::ValueType VT, bool isTarget = false); 1760bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner SDOperand getIntPtrConstant(uint64_t Val, bool isTarget = false); 177cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner SDOperand getTargetConstant(uint64_t Val, MVT::ValueType VT) { 178cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getConstant(Val, VT, true); 179cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 1806394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman SDOperand getTargetConstant(const APInt &Val, MVT::ValueType VT) { 1816394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman return getConstant(Val, VT, true); 1826394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman } 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); 222276dcbdc8db6614cfd5004dc7dc35e437ddf9c58Duncan Sands SDOperand getArgFlags(ISD::ArgFlagsTy Flags); 22315e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner SDOperand getValueType(MVT::ValueType); 224d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getRegister(unsigned Reg, MVT::ValueType VT); 225c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 226d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N) { 227d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner return getNode(ISD::CopyToReg, MVT::Other, Chain, 228d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner getRegister(Reg, N.getValueType()), N); 229cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner } 230cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 231e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 232e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 233e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 234e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyToReg(SDOperand Chain, unsigned Reg, SDOperand N, 235e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 2362fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 237bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag }; 2382fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 239e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 24066a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 24166a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng // Similar to last getCopyToReg() except parameter Reg is a SDOperand 24266a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand getCopyToReg(SDOperand Chain, SDOperand Reg, SDOperand N, 24366a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng SDOperand Flag) { 2442fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 245bd564bfc63163e31f320c3da9749db70992dc35eChris Lattner SDOperand Ops[] = { Chain, Reg, N, Flag }; 2462fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 24766a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng } 248e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 249d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT) { 2502fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(VT, MVT::Other); 251f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, VT) }; 2522fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 2, Ops, 2); 25318c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner } 254e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 255e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 256e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 257e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 258e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand getCopyFromReg(SDOperand Chain, unsigned Reg, MVT::ValueType VT, 259e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner SDOperand Flag) { 2602fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(VT, MVT::Other, MVT::Flag); 261f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, getRegister(Reg, VT), Flag }; 2622fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 3, Ops, Flag.Val ? 3 : 2); 263e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 26418c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 2657cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getCondCode(ISD::CondCode Cond); 266cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 2671ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 2681ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 2691ccae666f596d5aeca5c9942995763600b622062Chris Lattner SDOperand getZeroExtendInReg(SDOperand Op, MVT::ValueType SrcTy); 2706a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner 2716a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 2726a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// a flag result (to ensure it's not CSE'd). 2736a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner SDOperand getCALLSEQ_START(SDOperand Chain, SDOperand Op) { 2742fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner const MVT::ValueType *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 275f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand Ops[] = { Chain, Op }; 2762fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CALLSEQ_START, VTs, 2, Ops, 2); 2776a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 2781ccae666f596d5aeca5c9942995763600b622062Chris Lattner 2790f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// getCALLSEQ_END - Return a new CALLSEQ_END node, which always must have a 2800f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// flag result (to ensure it's not CSE'd). 2810f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SDOperand getCALLSEQ_END(SDOperand Chain, SDOperand Op1, SDOperand Op2, 2820f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SDOperand InFlag) { 2830f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SDVTList NodeTys = getVTList(MVT::Other, MVT::Flag); 2840f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SmallVector<SDOperand, 4> Ops; 2850f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Chain); 2860f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op1); 2870f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op2); 2880f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(InFlag); 2890f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling return getNode(ISD::CALLSEQ_END, NodeTys, &Ops[0], 29034cd4a484e532cc463fd5a4bf59b88d13c5467c1Evan Cheng (unsigned)Ops.size() - (InFlag.Val == 0 ? 1 : 0)); 2910f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling } 2920f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling 293c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 294cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 295c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT); 296c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, SDOperand N); 297c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 298c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2); 299c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 300c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand N1, SDOperand N2, SDOperand N3); 301c3aae25116e66c177579b0b79182b09340b19753Chris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 3022d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4); 3032d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 304f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4, 305f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand N5); 306f7db8c69a12582c7d1ff7c5f25c948dca2dbf7dcChris Lattner SDOperand getNode(unsigned Opcode, MVT::ValueType VT, 3079cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 308f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner SDOperand getNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys, 3099cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 3102fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner SDOperand getNode(unsigned Opcode, const MVT::ValueType *VTs, unsigned NumVTs, 3119cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 31208ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs); 31308ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, SDOperand N); 31408ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 31508ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2); 31608ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 31708ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2, SDOperand N3); 31808ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 31908ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4); 32008ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand getNode(unsigned Opcode, SDVTList VTs, 32108ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N1, SDOperand N2, SDOperand N3, SDOperand N4, 32208ce9769718354e6767d3815e4c255e7c9fc0a46Dan Gohman SDOperand N5); 32367bb42aa5957bb24c0604cc08243cde9fe938e94Chris Lattner SDOperand getNode(unsigned Opcode, SDVTList VTs, 3249cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 3255c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 326707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman SDOperand getMemcpy(SDOperand Chain, SDOperand Dst, SDOperand Src, 327707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman SDOperand Size, unsigned Align, 328707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman bool AlwaysInline, 3291f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *DstSV, uint64_t DstSVOff, 3301f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *SrcSV, uint64_t SrcSVOff); 3315c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 332707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman SDOperand getMemmove(SDOperand Chain, SDOperand Dst, SDOperand Src, 33355888274f21fc1a760679a51591a209758db8cbfDan Gohman SDOperand Size, unsigned Align, 3341f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *DstSV, uint64_t DstOSVff, 3351f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *SrcSV, uint64_t SrcSVOff); 3365c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 337707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman SDOperand getMemset(SDOperand Chain, SDOperand Dst, SDOperand Src, 338707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman SDOperand Size, unsigned Align, 3391f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *DstSV, uint64_t DstSVOff); 3405c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 3417cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 3427cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// have an ISD::CondCode instead of an SDOperand. 3437cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 3447cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner SDOperand getSetCC(MVT::ValueType VT, SDOperand LHS, SDOperand RHS, 3457cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner ISD::CondCode Cond) { 3467cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner return getNode(ISD::SETCC, VT, LHS, RHS, getCondCode(Cond)); 347b43e9c196542acc80c9e4643809661065710848fNate Begeman } 348b43e9c196542acc80c9e4643809661065710848fNate Begeman 349b43e9c196542acc80c9e4643809661065710848fNate Begeman /// getVSetCC - Helper function to make it easier to build VSetCC's nodes 350b43e9c196542acc80c9e4643809661065710848fNate Begeman /// if you just have an ISD::CondCode instead of an SDOperand. 351b43e9c196542acc80c9e4643809661065710848fNate Begeman /// 352b43e9c196542acc80c9e4643809661065710848fNate Begeman SDOperand getVSetCC(MVT::ValueType VT, SDOperand LHS, SDOperand RHS, 353b43e9c196542acc80c9e4643809661065710848fNate Begeman ISD::CondCode Cond) { 354b43e9c196542acc80c9e4643809661065710848fNate Begeman return getNode(ISD::VSETCC, VT, LHS, RHS, getCondCode(Cond)); 3557cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 3569373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 3579373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 3589373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// just have an ISD::CondCode instead of an SDOperand. 3599373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 3609373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand getSelectCC(SDOperand LHS, SDOperand RHS, 3619373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman SDOperand True, SDOperand False, ISD::CondCode Cond) { 3622fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::SELECT_CC, True.getValueType(), LHS, RHS, True, False, 3632fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner getCondCode(Cond)); 3649373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 3657cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 366acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 367acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 368acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand getVAArg(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr, 369acc398c195a697795bff3245943d104eb19192b9Nate Begeman SDOperand SV); 3707cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 371ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth /// getAtomic - Gets a node for an atomic op, produces result and chain, takes 372ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth // 3 operands 373ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth SDOperand getAtomic(unsigned Opcode, SDOperand Chain, SDOperand Ptr, 374c1c7bd610a1647d8e7eaeb4cc38ca1a85ae5e271Andrew Lenharth SDOperand Cmp, SDOperand Swp, MVT::ValueType VT); 375ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 376ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth /// getAtomic - Gets a node for an atomic op, produces result and chain, takes 377ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth // 2 operands 378ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth SDOperand getAtomic(unsigned Opcode, SDOperand Chain, SDOperand Ptr, 379c1c7bd610a1647d8e7eaeb4cc38ca1a85ae5e271Andrew Lenharth SDOperand Val, MVT::ValueType VT); 380ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 381c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 382c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 383cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 38421074f43ed5165828717ea3606eb2bd222a39b26Chris Lattner SDOperand getLoad(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr, 38595c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 38695c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 38724446e253a17720f6462288255ab5ebd13b8491fEvan Cheng SDOperand getExtLoad(ISD::LoadExtType ExtType, MVT::ValueType VT, 38824446e253a17720f6462288255ab5ebd13b8491fEvan Cheng SDOperand Chain, SDOperand Ptr, const Value *SV, 38995c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb int SVOffset, MVT::ValueType EVT, bool isVolatile=false, 39095c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 3918862ef148100070b7bf28beead3951464250c926Evan Cheng SDOperand getIndexedLoad(SDOperand OrigLoad, SDOperand Base, 392144d8f09e139f691cafadbc17873943ba4c465f3Evan Cheng SDOperand Offset, ISD::MemIndexedMode AM); 393e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands SDOperand getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType, 394e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands MVT::ValueType VT, SDOperand Chain, 395e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands SDOperand Ptr, SDOperand Offset, 396e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands const Value *SV, int SVOffset, MVT::ValueType EVT, 397e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands bool isVolatile=false, unsigned Alignment=0); 3982d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 399ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// getStore - Helper function to build ISD::STORE nodes. 400ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// 401d41b30def3181bce4bf87e8bde664d15663165d0Jeff Cohen SDOperand getStore(SDOperand Chain, SDOperand Val, SDOperand Ptr, 40295c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 40395c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 404d41b30def3181bce4bf87e8bde664d15663165d0Jeff Cohen SDOperand getTruncStore(SDOperand Chain, SDOperand Val, SDOperand Ptr, 4058b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng const Value *SV, int SVOffset, MVT::ValueType TVT, 40695c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb bool isVolatile=false, unsigned Alignment=0); 4079109fb1eb7d3341727353777c2a4282aa1a0c39aEvan Cheng SDOperand getIndexedStore(SDOperand OrigStoe, SDOperand Base, 408144d8f09e139f691cafadbc17873943ba4c465f3Evan Cheng SDOperand Offset, ISD::MemIndexedMode AM); 409ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng 41069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman // getSrcValue - Construct a node to track a Value* through the backend. 41169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman SDOperand getSrcValue(const Value *v); 41269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 41369de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman // getMemOperand - Construct a node to track a memory reference 41469de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman // through the backend. 41536b5c1338a03453ba1c110b120269ca972fb65a3Dan Gohman SDOperand getMemOperand(const MachineMemOperand &MO); 416cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 417b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 418b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 419b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 420b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 421b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 422b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 423b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op); 424b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2); 425b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 426b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3); 427b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 428b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner SDOperand Op3, SDOperand Op4); 4299b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand UpdateNodeOperands(SDOperand N, SDOperand Op1, SDOperand Op2, 4309b88361befd2a94202dc60ccfb3e31756916a9caChris Lattner SDOperand Op3, SDOperand Op4, SDOperand Op5); 4319cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperand UpdateNodeOperands(SDOperand N, SDOperandPtr Ops, unsigned NumOps); 4321b95095857b78e12138c22e76c7936611c51355bChris Lattner 4331b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 4341b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 4351b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 436eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// ISD::BUILTIN_OP_END+TargetOpcode in the node opcode field. The 0th value 437eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner /// of the resultant node is returned. 43895514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT); 43995514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 44095514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1); 44195514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 44295514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1, SDOperand Op2); 44395514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 44495514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 445694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT, 4469cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 44795514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 44895514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2); 44995514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT::ValueType VT1, 45095514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 45195514bae7309ffacfc0a79b267159dcfde2b7720Evan Cheng SDOperand Op3); 452694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng 453753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 4546ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// getTargetNode - These are used for target selectors to create a new node 4556ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// with specified return type(s), target opcode, and operands. 4566ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 4576ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// Note that getTargetNode returns the resultant node. If there is already a 4586ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// node of the specified opcode and operands, it returns that node instead of 4596ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// the current one. 4606ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT); 4616ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 4626ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1); 4636ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 4646ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 4656ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 4666ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2, SDOperand Op3); 4676ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT, 4689cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 4696ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 4706eaeff29b8a6990107735f7e5f5e49da38f56223Dale Johannesen MVT::ValueType VT2); 4716eaeff29b8a6990107735f7e5f5e49da38f56223Dale Johannesen SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 4726ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1); 4736ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 4746ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2); 4756ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 4766ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, SDOperand Op1, SDOperand Op2, 4776ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op3); 478694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 479694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng MVT::ValueType VT2, 4809cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 4816ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 4826ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 4836ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDOperand Op1, SDOperand Op2); 484b3a0417cad8b625acc3033bd5e24afb9ffd0b084Lauro Ramos Venancio SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 485b3a0417cad8b625acc3033bd5e24afb9ffd0b084Lauro Ramos Venancio MVT::ValueType VT2, MVT::ValueType VT3, 486b3a0417cad8b625acc3033bd5e24afb9ffd0b084Lauro Ramos Venancio SDOperand Op1, SDOperand Op2, SDOperand Op3); 4876ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 488694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 4899cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 49005e69c1f23f1097530fcbc7be97f99d696c019a2Evan Cheng SDNode *getTargetNode(unsigned Opcode, MVT::ValueType VT1, 49105e69c1f23f1097530fcbc7be97f99d696c019a2Evan Cheng MVT::ValueType VT2, MVT::ValueType VT3, 49205e69c1f23f1097530fcbc7be97f99d696c019a2Evan Cheng MVT::ValueType VT4, 4939cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 49439305cf55363046162c5a992f96f26d607a204e5Evan Cheng SDNode *getTargetNode(unsigned Opcode, std::vector<MVT::ValueType> &ResultTys, 4959cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 49608b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng 49708b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// getNodeIfExists - Get the specified node if it's already available, or 49808b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// else return NULL. 49908b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng SDNode *getNodeIfExists(unsigned Opcode, SDVTList VTs, 5009cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDOperandPtr Ops, unsigned NumOps); 5016542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner 502f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// DAGUpdateListener - Clients of various APIs that cause global effects on 503f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// the DAG can optionally implement this interface. This allows the clients 504f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// to handle the various sorts of updates that happen. 505f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner class DAGUpdateListener { 506f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner public: 507f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual ~DAGUpdateListener(); 508f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual void NodeDeleted(SDNode *N) = 0; 509f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual void NodeUpdated(SDNode *N) = 0; 510f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner }; 511f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner 512f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// RemoveDeadNode - Remove the specified node from the system. If any of its 513f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// operands then becomes dead, remove them as well. Inform UpdateListener 514f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// for each node deleted. 515f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner void RemoveDeadNode(SDNode *N, DAGUpdateListener *UpdateListener = 0); 516f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner 5176542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 51826005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 51926005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 52026005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// if you have two nodes with identical results, use the third otherwise. 5216542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 522f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// These methods all take an optional UpdateListener, which (if not null) is 523f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// informed about nodes that are deleted and modified due to recursive 524f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// changes in the dag. 525fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 526fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDOperand From, SDOperand Op, 527f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 528fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 529f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 5309cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein void ReplaceAllUsesWith(SDNode *From, SDOperandPtr To, 531f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 532fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 53380274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 534f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// uses of other values produced by From.Val alone. 53580274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner void ReplaceAllUsesOfValueWith(SDOperand From, SDOperand To, 536f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 53780274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 538e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignNodeIds - Assign a unique node id for each node in the DAG based on 539e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// their allnodes order. It returns the maximum id. 5407c16d776cb827922dd0f8f0a88c5b65a90810c0bEvan Cheng unsigned AssignNodeIds(); 541b9ee9e60a905b90fa3e84c5c6091af6e5a0382d2Evan Cheng 542e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignTopologicalOrder - Assign a unique node id for each node in the DAG 54309fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// based on their topological order. It returns the maximum id and a vector 54409fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// of the SDNodes* in assigned order by reference. 54509fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng unsigned AssignTopologicalOrder(std::vector<SDNode*> &TopOrder); 546e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng 5471efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// isCommutativeBinOp - Returns true if the opcode is a commutative binary 5481efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// operation. 5491efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng static bool isCommutativeBinOp(unsigned Opcode) { 5504ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // FIXME: This should get its info from the td file, so that we can include 5514ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // target info. 5521efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng switch (Opcode) { 5531efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADD: 5541efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MUL: 5551efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHU: 5561efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHS: 557b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::SMUL_LOHI: 558b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::UMUL_LOHI: 5591efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FADD: 5601efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FMUL: 5611efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::AND: 5621efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::OR: 5631efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::XOR: 5641efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDC: 5651efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDE: return true; 5661efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng default: return false; 5671efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 5681efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 5691efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng 570cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 571d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 57237ce9df0da6cddc3b8bfef9b63d33d058a0f2f15Chris Lattner /// CreateStackTemporary - Create a stack temporary, suitable for holding the 57337ce9df0da6cddc3b8bfef9b63d33d058a0f2f15Chris Lattner /// specified value type. 57437ce9df0da6cddc3b8bfef9b63d33d058a0f2f15Chris Lattner SDOperand CreateStackTemporary(MVT::ValueType VT); 57537ce9df0da6cddc3b8bfef9b63d33d058a0f2f15Chris Lattner 57651dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner /// FoldSetCC - Constant fold a setcc to true or false. 57751dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner SDOperand FoldSetCC(MVT::ValueType VT, SDOperand N1, 57851dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner SDOperand N2, ISD::CondCode Cond); 57951dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner 5802e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// SignBitIsZero - Return true if the sign bit of Op is known to be zero. We 5812e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// use this predicate to simplify operations downstream. 5822e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman bool SignBitIsZero(SDOperand Op, unsigned Depth = 0) const; 5832e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman 584ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// MaskedValueIsZero - Return true if 'Op & Mask' is known to be zero. We 585ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// use this predicate to simplify operations downstream. Op and Mask are 586ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be the same type. 5872e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman bool MaskedValueIsZero(SDOperand Op, const APInt &Mask, unsigned Depth = 0) 588ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman const; 589ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 590ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeMaskedBits - Determine which of the bits specified in Mask are 591ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be either zero or one and return them in the KnownZero/KnownOne 592ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// bitsets. This code only analyzes bits in Mask, in order to short-circuit 593ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// processing. Targets can implement the computeMaskedBitsForTargetNode 594ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// method in the TargetLowering class to allow target nodes to be understood. 595977a76fbb6ea1b87dfd7fbbe2ae2afb63e982ff3Dan Gohman void ComputeMaskedBits(SDOperand Op, const APInt &Mask, APInt &KnownZero, 596fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman APInt &KnownOne, unsigned Depth = 0) const; 597fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman 598ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeNumSignBits - Return the number of times the sign bit of the 599ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// register is replicated into the other bits. We know that at least 1 bit 600ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// is always equal to the sign bit (itself), but other cases can give us 601ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// information. For example, immediately after an "SRA X, 2", we know that 602ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// the top 3 bits are all equal to each other, so we return 3. Targets can 603ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// implement the ComputeNumSignBitsForTarget method in the TargetLowering 604ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// class to allow target nodes to be understood. 605ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman unsigned ComputeNumSignBits(SDOperand Op, unsigned Depth = 0) const; 606a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng 607a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng /// isVerifiedDebugInfoDesc - Returns true if the specified SDOperand has 608a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng /// been verified as a debug information descriptor. 609a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng bool isVerifiedDebugInfoDesc(SDOperand Op) const; 61077f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng 61177f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// getShuffleScalarElt - Returns the scalar element that will make up the ith 61277f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// element of the result of the vector shuffle. 61377f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng SDOperand getShuffleScalarElt(const SDNode *N, unsigned Idx); 614ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 615d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 6161b95095857b78e12138c22e76c7936611c51355bChris Lattner void RemoveNodeFromCSEMaps(SDNode *N); 6176542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner SDNode *AddNonLeafNodeToCSEMaps(SDNode *N); 618a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op, void *&InsertPos); 619a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner SDNode *FindModifiedNodeSlot(SDNode *N, SDOperand Op1, SDOperand Op2, 620a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 6219cac5259fe237120a0c347d6d14e549005148f1bRoman Levenstein SDNode *FindModifiedNodeSlot(SDNode *N, SDOperandPtr Ops, unsigned NumOps, 622a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 623b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 624fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 6257cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 626109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner // List of non-single value types. 627109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner std::list<std::vector<MVT::ValueType> > VTList; 628109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 6291cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner // Maps to auto-CSE operations. 6307cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 6311cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 63215e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 633f411b83c8c6853c2a922b692e782566353153f08Duncan Sands std::map<MVT::ValueType, SDNode*> ExtendedValueTypeNodes; 6345f056bf4b862a7c31388a68711dd3b3ed5de2be8Chris Lattner std::map<std::string, SDNode*> ExternalSymbols; 6352a2de66db2093a5bc1fd620d1b6ae7992a552b24Andrew Lenharth std::map<std::string, SDNode*> TargetExternalSymbols; 63647725d059b259f8a0c145478300c9e9caa006b59Chris Lattner std::map<std::string, StringSDNode*> StringNodes; 637cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 638cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 6391080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 6401080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 6411080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 6421080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 6431080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 6441080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 6451080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 6461080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 6471080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 6481080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 649b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 650cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 651cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 652