SelectionDAG.h revision 475871a144eb604ddaf37503397ba0941442e5fb
1c3aae25116e66c177579b0b79182b09340b19753Chris Lattner//===-- llvm/CodeGen/SelectionDAG.h - InstSelection DAG ---------*- C++ -*-===// 2ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 36fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// The LLVM Compiler Infrastructure 46fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 57ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// This file is distributed under the University of Illinois Open Source 67ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// License. See LICENSE.TXT for details. 7ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 86fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell//===----------------------------------------------------------------------===// 9ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 10c3aae25116e66c177579b0b79182b09340b19753Chris Lattner// This file declares the SelectionDAG class, and transitively defines the 11c3aae25116e66c177579b0b79182b09340b19753Chris Lattner// SDNode class and subclasses. 12ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 13cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner//===----------------------------------------------------------------------===// 14cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 15cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#ifndef LLVM_CODEGEN_SELECTIONDAG_H 16cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#define LLVM_CODEGEN_SELECTIONDAG_H 17cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 18583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey#include "llvm/ADT/FoldingSet.h" 194b84086e89d86fb16f562166d9fea8df37db6be7Dan Gohman#include "llvm/ADT/StringMap.h" 20583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey#include "llvm/CodeGen/SelectionDAGNodes.h" 21b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 22acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman#include <cassert> 23109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner#include <list> 245892d47a625638a90afeb31dd4f6f80a2f9bacdeChris Lattner#include <vector> 25322812e603705e1c2037313633e72f689524b163Evan Cheng#include <map> 26eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner#include <string> 27d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 28d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 29c7c3f110eda0ff8040e4bd99e38d3112b910810fJim Laskey class AliasAnalysis; 30c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class TargetLowering; 31c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class TargetMachine; 3244c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey class MachineModuleInfo; 33c3aae25116e66c177579b0b79182b09340b19753Chris Lattner class MachineFunction; 34d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng class MachineConstantPoolValue; 35ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner class FunctionLoweringInfo; 36c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 37c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// SelectionDAG class - This is used to represent a portion of an LLVM function 38c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// in a low-level Data Dependence DAG representation suitable for instruction 39c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection. This DAG is constructed as the first step of instruction 40c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection in order to allow implementation of machine specific optimizations 41c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// and code simplifications. 42c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// 43c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// The representation used by the SelectionDAG is a target-independent 44c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// representation, which has some similarities to the GCC RTL representation, 45c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// but is significantly more simple, powerful, and is a graph form instead of a 46c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// linear form. 47cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner/// 48cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerclass SelectionDAG { 49063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &TLI; 50c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &MF; 51ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner FunctionLoweringInfo &FLI; 5244c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey MachineModuleInfo *MMI; 53cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 54213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// Root - The root of the entire DAG. EntryNode - The starting token. 55475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Root, EntryNode; 56cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 57213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// AllNodes - A linked list of nodes in the current DAG. 580e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman alist<SDNode, LargestSDNode> &AllNodes; 59691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 60213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSEMap - This structure is used to memoize nodes, automatically performing 61213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSE with existing nodes with a duplicate is requested. 62583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey FoldingSet<SDNode> CSEMap; 63213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner 64e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// Allocator - Pool allocation for misc. objects that are created once per 65e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// SelectionDAG. 66e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman BumpPtrAllocator Allocator; 67e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman 68d038e04188047eca4749d025ef1f05f7ae660bcaDuncan Sands /// VerifyNode - Sanity check the given node. Aborts if it is invalid. 69d038e04188047eca4749d025ef1f05f7ae660bcaDuncan Sands void VerifyNode(SDNode *N); 70d038e04188047eca4749d025ef1f05f7ae660bcaDuncan Sands 71cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerpublic: 72ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner SelectionDAG(TargetLowering &tli, MachineFunction &mf, 730e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman FunctionLoweringInfo &fli, MachineModuleInfo *mmi, 740e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman alist<SDNode, LargestSDNode> &NodePool) 750e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman : TLI(tli), MF(mf), FLI(fli), MMI(mmi), AllNodes(NodePool) { 76c3aae25116e66c177579b0b79182b09340b19753Chris Lattner EntryNode = Root = getNode(ISD::EntryToken, MVT::Other); 77c3aae25116e66c177579b0b79182b09340b19753Chris Lattner } 78cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner ~SelectionDAG(); 79cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 80c3aae25116e66c177579b0b79182b09340b19753Chris Lattner MachineFunction &getMachineFunction() const { return MF; } 81063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner const TargetMachine &getTarget() const; 82063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &getTargetLoweringInfo() const { return TLI; } 83ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner FunctionLoweringInfo &getFunctionLoweringInfo() const { return FLI; } 8444c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey MachineModuleInfo *getMachineModuleInfo() const { return MMI; } 85cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 86ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// viewGraph - Pop up a GraphViz/gv window with the DAG rendered using 'dot'. 871080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner /// 88462dc7f4960e5074ddf4769ec8b2ef1ba7a4d2c8Dan Gohman void viewGraph(const std::string &Title); 89462dc7f4960e5074ddf4769ec8b2ef1ba7a4d2c8Dan Gohman void viewGraph() { return viewGraph(""); } 90ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 91ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#ifndef NDEBUG 92ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey std::map<const SDNode *, std::string> NodeGraphAttrs; 93ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#endif 941080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 95ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// clearGraphAttrs - Clear all previously defined node graph attributes. 96ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Intended to be used from a debugging tool (eg. gdb). 97ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void clearGraphAttrs(); 98ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 99ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".) 100ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 101ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphAttrs(const SDNode *N, const char *Attrs); 102ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 103ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".) 104ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Used from getNodeAttributes. 105ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey const std::string getGraphAttrs(const SDNode *N) const; 106ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 107ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphColor - Convenience for setting node color attribute. 108ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 109ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphColor(const SDNode *N, const char *Color); 1101080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 1110e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman typedef alist<SDNode, LargestSDNode>::const_iterator allnodes_const_iterator; 112b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); } 113b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_end() const { return AllNodes.end(); } 1140e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman typedef alist<SDNode, LargestSDNode>::iterator allnodes_iterator; 115b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_begin() { return AllNodes.begin(); } 116b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_end() { return AllNodes.end(); } 1170e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman alist<SDNode, LargestSDNode>::size_type allnodes_size() const { 1180e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman return AllNodes.size(); 1190e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman } 120b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 121c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getRoot - Return the root tag of the SelectionDAG. 122cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 123475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue &getRoot() const { return Root; } 124cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 125c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getEntryNode - Return the token chain corresponding to the entry of the 126c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// function. 127475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue &getEntryNode() const { return EntryNode; } 128cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 129c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// setRoot - Set the current root tag of the SelectionDAG. 130cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 131475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue &setRoot(SDValue N) { 132acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman assert((!N.Val || N.getValueType() == MVT::Other) && 133acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman "DAG root value is not a chain!"); 134acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman return Root = N; 135acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman } 136cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1371d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// Combine - This iterates over the nodes in the SelectionDAG, folding 1381d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// certain types of nodes together, or eliminating superfluous nodes. When 1391d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// the AfterLegalize argument is set to 'true', Combine takes care not to 1401d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// generate any nodes that will be illegal on the target. 141c7c3f110eda0ff8040e4bd99e38d3112b910810fJim Laskey void Combine(bool AfterLegalize, AliasAnalysis &AA); 1421d4d41411190dd9e62764e56713753d4155764ddNate Begeman 14301d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// LegalizeTypes - This transforms the SelectionDAG into a SelectionDAG that 14401d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// only uses types natively supported by the target. 14501d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// 14601d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// Note that this is an involved process that may invalidate pointers into 14701d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// the graph. 14801d029b82cb08367d81aa10cdc94d05360466649Chris Lattner void LegalizeTypes(); 14901d029b82cb08367d81aa10cdc94d05360466649Chris Lattner 150c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Legalize - This transforms the SelectionDAG into a SelectionDAG that is 151c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// compatible with the target instruction selector, as indicated by the 152c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// TargetLowering object. 153cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 154c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Note that this is an involved process that may invalidate pointers into 155c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// the graph. 156063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner void Legalize(); 157c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 158d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// RemoveDeadNodes - This method deletes all unreachable nodes in the 159190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner /// SelectionDAG. 160190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner void RemoveDeadNodes(); 161130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 162130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// DeleteNode - Remove the specified node from the system. This node must 163130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// have no referrers. 164130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng void DeleteNode(SDNode *N); 165130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 16670046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getVTList - Return an SDVTList that represents the list of values 16770046e920fa37989a041af663ada2b2b646e258fChris Lattner /// specified. 16883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(MVT VT); 16983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(MVT VT1, MVT VT2); 17083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(MVT VT1, MVT VT2, MVT VT3); 17183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(const MVT *VTs, unsigned NumVTs); 17270046e920fa37989a041af663ada2b2b646e258fChris Lattner 17370046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getNodeValueTypes - These are obsolete, use getVTList instead. 17483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *getNodeValueTypes(MVT VT) { 17570046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT).VTs; 17670046e920fa37989a041af663ada2b2b646e258fChris Lattner } 17783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *getNodeValueTypes(MVT VT1, MVT VT2) { 17870046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2).VTs; 17970046e920fa37989a041af663ada2b2b646e258fChris Lattner } 18083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *getNodeValueTypes(MVT VT1, MVT VT2, MVT VT3) { 18170046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2, VT3).VTs; 18270046e920fa37989a041af663ada2b2b646e258fChris Lattner } 183f877b735ad4987f26cafcbaf22aa4c2199458b5dDan Gohman const MVT *getNodeValueTypes(const std::vector<MVT> &vtList) { 18413d57320bd212483463d4f8992d5787b29eda5dfBill Wendling return getVTList(&vtList[0], (unsigned)vtList.size()).VTs; 18570046e920fa37989a041af663ada2b2b646e258fChris Lattner } 18670046e920fa37989a041af663ada2b2b646e258fChris Lattner 18770046e920fa37989a041af663ada2b2b646e258fChris Lattner 1881b1a49714ef26225a42199cf2930529f31868322Chris Lattner //===--------------------------------------------------------------------===// 18970046e920fa37989a041af663ada2b2b646e258fChris Lattner // Node creation methods. 19070046e920fa37989a041af663ada2b2b646e258fChris Lattner // 191475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstant(uint64_t Val, MVT VT, bool isTarget = false); 192475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstant(const APInt &Val, MVT VT, bool isTarget = false); 193475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getIntPtrConstant(uint64_t Val, bool isTarget = false); 194475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstant(uint64_t Val, MVT VT) { 195cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getConstant(Val, VT, true); 196cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 197475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstant(const APInt &Val, MVT VT) { 1986394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman return getConstant(Val, VT, true); 1996394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman } 200475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstantFP(double Val, MVT VT, bool isTarget = false); 201475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstantFP(const APFloat& Val, MVT VT, bool isTarget = false); 202475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstantFP(double Val, MVT VT) { 203c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantFP(Val, VT, true); 204c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 205475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstantFP(const APFloat& Val, MVT VT) { 206f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen return getConstantFP(Val, VT, true); 207f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen } 208475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getGlobalAddress(const GlobalValue *GV, MVT VT, 209cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner int offset = 0, bool isTargetGA = false); 210475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetGlobalAddress(const GlobalValue *GV, MVT VT, 211cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner int offset = 0) { 212cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getGlobalAddress(GV, VT, offset, true); 213cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 214475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getFrameIndex(int FI, MVT VT, bool isTarget = false); 215475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetFrameIndex(int FI, MVT VT) { 216c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getFrameIndex(FI, VT, true); 217c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 218475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getJumpTable(int JTI, MVT VT, bool isTarget = false); 219475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetJumpTable(int JTI, MVT VT) { 220c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getJumpTable(JTI, VT, true); 221c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 222475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstantPool(Constant *C, MVT VT, 223c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offs = 0, bool isT=false); 224475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstantPool(Constant *C, MVT VT, 225c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offset = 0) { 226c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantPool(C, VT, Align, Offset, true); 227c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 228475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstantPool(MachineConstantPoolValue *C, MVT VT, 229d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng unsigned Align = 0, int Offs = 0, bool isT=false); 230475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstantPool(MachineConstantPoolValue *C, 23183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT, unsigned Align = 0, 232d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng int Offset = 0) { 233d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng return getConstantPool(C, VT, Align, Offset, true); 234d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng } 235475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getBasicBlock(MachineBasicBlock *MBB); 236475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getExternalSymbol(const char *Sym, MVT VT); 237475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetExternalSymbol(const char *Sym, MVT VT); 238475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getArgFlags(ISD::ArgFlagsTy Flags); 239475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getValueType(MVT); 240475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getRegister(unsigned Reg, MVT VT); 241475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getDbgStopPoint(SDValue Root, unsigned Line, unsigned Col, 2427f460203b0c5350e9b2c592f438e40f7a7de6e45Dan Gohman const CompileUnitDesc *CU); 243475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getLabel(unsigned Opcode, SDValue Root, unsigned LabelID); 244c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 245475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyToReg(SDValue Chain, unsigned Reg, SDValue N) { 246d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner return getNode(ISD::CopyToReg, MVT::Other, Chain, 247d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner getRegister(Reg, N.getValueType()), N); 248cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner } 249cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 250e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 251e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 252e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 253475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyToReg(SDValue Chain, unsigned Reg, SDValue N, 254475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag) { 25583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 256475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag }; 2572fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 258e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 25966a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 260475871a144eb604ddaf37503397ba0941442e5fbDan Gohman // Similar to last getCopyToReg() except parameter Reg is a SDValue 261475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyToReg(SDValue Chain, SDValue Reg, SDValue N, 262475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag) { 26383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 264475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, Reg, N, Flag }; 2652fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.Val ? 4 : 3); 26666a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng } 267e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 268475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyFromReg(SDValue Chain, unsigned Reg, MVT VT) { 26983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(VT, MVT::Other); 270475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, getRegister(Reg, VT) }; 2712fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 2, Ops, 2); 27218c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner } 273e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 274e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 275e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 276e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 277475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyFromReg(SDValue Chain, unsigned Reg, MVT VT, 278475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag) { 27983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(VT, MVT::Other, MVT::Flag); 280475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, getRegister(Reg, VT), Flag }; 2812fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 3, Ops, Flag.Val ? 3 : 2); 282e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 28318c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 284475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCondCode(ISD::CondCode Cond); 285cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 2861ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 2871ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 288475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getZeroExtendInReg(SDValue Op, MVT SrcTy); 2896a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner 2906a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 2916a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// a flag result (to ensure it's not CSE'd). 292475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCALLSEQ_START(SDValue Chain, SDValue Op) { 29383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 294475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, Op }; 2952fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CALLSEQ_START, VTs, 2, Ops, 2); 2966a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 2971ccae666f596d5aeca5c9942995763600b622062Chris Lattner 2980f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// getCALLSEQ_END - Return a new CALLSEQ_END node, which always must have a 2990f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// flag result (to ensure it's not CSE'd). 300475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCALLSEQ_END(SDValue Chain, SDValue Op1, SDValue Op2, 301475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InFlag) { 3020f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SDVTList NodeTys = getVTList(MVT::Other, MVT::Flag); 303475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 4> Ops; 3040f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Chain); 3050f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op1); 3060f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op2); 3070f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(InFlag); 3080f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling return getNode(ISD::CALLSEQ_END, NodeTys, &Ops[0], 30934cd4a484e532cc463fd5a4bf59b88d13c5467c1Evan Cheng (unsigned)Ops.size() - (InFlag.Val == 0 ? 1 : 0)); 3100f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling } 3110f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling 312c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 313cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 314475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT); 315475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, SDValue N); 316475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, SDValue N1, SDValue N2); 317475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 318475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue N1, SDValue N2, SDValue N3); 319475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 320475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue N1, SDValue N2, SDValue N3, SDValue N4); 321475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 322475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue N1, SDValue N2, SDValue N3, SDValue N4, 323475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue N5); 324475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 325475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 326475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 3276d9cdd56173fb915a9e3a8f0f6b5a8ed9bed1098Dan Gohman const SDUse *Ops, unsigned NumOps); 328475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, const std::vector<MVT> &ResultTys, 329475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 330475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, const MVT *VTs, unsigned NumVTs, 331475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 332475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs); 333475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, SDValue N); 334475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, SDValue N1, SDValue N2); 335475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, 336475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue N1, SDValue N2, SDValue N3); 337475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, 338475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue N1, SDValue N2, SDValue N3, SDValue N4); 339475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, 340475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue N1, SDValue N2, SDValue N3, SDValue N4, 341475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue N5); 342475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, 343475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 344475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 345475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMemcpy(SDValue Chain, SDValue Dst, SDValue Src, 346475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Size, unsigned Align, 347707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman bool AlwaysInline, 3481f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *DstSV, uint64_t DstSVOff, 3491f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *SrcSV, uint64_t SrcSVOff); 3505c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 351475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMemmove(SDValue Chain, SDValue Dst, SDValue Src, 352475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Size, unsigned Align, 3531f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *DstSV, uint64_t DstOSVff, 3541f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *SrcSV, uint64_t SrcSVOff); 3555c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 356475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMemset(SDValue Chain, SDValue Dst, SDValue Src, 357475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Size, unsigned Align, 3581f13c686df75ddbbe15b208606ece4846d7479a8Dan Gohman const Value *DstSV, uint64_t DstSVOff); 3595c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 3607cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 361475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// have an ISD::CondCode instead of an SDValue. 3627cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 363475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSetCC(MVT VT, SDValue LHS, SDValue RHS, 3647cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner ISD::CondCode Cond) { 3657cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner return getNode(ISD::SETCC, VT, LHS, RHS, getCondCode(Cond)); 366b43e9c196542acc80c9e4643809661065710848fNate Begeman } 367b43e9c196542acc80c9e4643809661065710848fNate Begeman 368b43e9c196542acc80c9e4643809661065710848fNate Begeman /// getVSetCC - Helper function to make it easier to build VSetCC's nodes 369475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// if you just have an ISD::CondCode instead of an SDValue. 370b43e9c196542acc80c9e4643809661065710848fNate Begeman /// 371475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getVSetCC(MVT VT, SDValue LHS, SDValue RHS, 372b43e9c196542acc80c9e4643809661065710848fNate Begeman ISD::CondCode Cond) { 373b43e9c196542acc80c9e4643809661065710848fNate Begeman return getNode(ISD::VSETCC, VT, LHS, RHS, getCondCode(Cond)); 3747cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 3759373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 3769373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 377475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// just have an ISD::CondCode instead of an SDValue. 3789373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 379475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSelectCC(SDValue LHS, SDValue RHS, 380475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue True, SDValue False, ISD::CondCode Cond) { 3812fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::SELECT_CC, True.getValueType(), LHS, RHS, True, False, 3822fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner getCondCode(Cond)); 3839373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 3847cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 385acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 386acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 387475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getVAArg(MVT VT, SDValue Chain, SDValue Ptr, 388475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue SV); 3897cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 390ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth /// getAtomic - Gets a node for an atomic op, produces result and chain, takes 39128873106309db515d58889a4c4fa3e0a92d1b60eMon P Wang /// 3 operands 392475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getAtomic(unsigned Opcode, SDValue Chain, SDValue Ptr, 393475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Cmp, SDValue Swp, const Value* PtrVal, 39428873106309db515d58889a4c4fa3e0a92d1b60eMon P Wang unsigned Alignment=0); 395ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 396ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth /// getAtomic - Gets a node for an atomic op, produces result and chain, takes 39728873106309db515d58889a4c4fa3e0a92d1b60eMon P Wang /// 2 operands 398475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getAtomic(unsigned Opcode, SDValue Chain, SDValue Ptr, 399475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val, const Value* PtrVal, 40028873106309db515d58889a4c4fa3e0a92d1b60eMon P Wang unsigned Alignment = 0); 401ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 4024bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands /// getMergeValues - Create a MERGE_VALUES node from the given operands. 4034bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands /// Allowed to return something different (and simpler) if Simplify is true. 404475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMergeValues(const SDValue *Ops, unsigned NumOps, 4054bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands bool Simplify = true); 4064bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands 407f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands /// getMergeValues - Create a MERGE_VALUES node from the given types and ops. 408f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands /// Allowed to return something different (and simpler) if Simplify is true. 4094bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands /// May be faster than the above version if VTs is known and NumOps is large. 410475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMergeValues(SDVTList VTs, const SDValue *Ops, unsigned NumOps, 411f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands bool Simplify = true) { 412f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands if (Simplify && NumOps == 1) 413f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands return Ops[0]; 414f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands return getNode(ISD::MERGE_VALUES, VTs, Ops, NumOps); 415f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands } 416f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands 417c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 418c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 419cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 420475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getLoad(MVT VT, SDValue Chain, SDValue Ptr, 42195c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 42295c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 423475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getExtLoad(ISD::LoadExtType ExtType, MVT VT, 424475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain, SDValue Ptr, const Value *SV, 42583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int SVOffset, MVT EVT, bool isVolatile=false, 42695c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 427475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getIndexedLoad(SDValue OrigLoad, SDValue Base, 428475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Offset, ISD::MemIndexedMode AM); 429475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType, 430475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT, SDValue Chain, 431475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr, SDValue Offset, 43283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const Value *SV, int SVOffset, MVT EVT, 433e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands bool isVolatile=false, unsigned Alignment=0); 4342d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 435ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// getStore - Helper function to build ISD::STORE nodes. 436ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// 437475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getStore(SDValue Chain, SDValue Val, SDValue Ptr, 43895c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 43995c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 440475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTruncStore(SDValue Chain, SDValue Val, SDValue Ptr, 44183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const Value *SV, int SVOffset, MVT TVT, 44295c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb bool isVolatile=false, unsigned Alignment=0); 443475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getIndexedStore(SDValue OrigStoe, SDValue Base, 444475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Offset, ISD::MemIndexedMode AM); 445ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng 44669de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman // getSrcValue - Construct a node to track a Value* through the backend. 447475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSrcValue(const Value *v); 44869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 44969de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman // getMemOperand - Construct a node to track a memory reference 45069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman // through the backend. 451475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMemOperand(const MachineMemOperand &MO); 452cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 453b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 454b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 455b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 456b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 457b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 458b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 459475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op); 460475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2); 461475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2, 462475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3); 463475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2, 464475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3, SDValue Op4); 465475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2, 466475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3, SDValue Op4, SDValue Op5); 467475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, 468475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 4691b95095857b78e12138c22e76c7936611c51355bChris Lattner 4701b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 4711b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 4721b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 473e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// ~TargetOpcode in the node opcode field. The resultant node is returned. 47483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT); 475475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, SDValue Op1); 47683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 477475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 47883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 479475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 48083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 481475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 482cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, MVT VT2); 483cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 484475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, const SDValue *Ops, unsigned NumOps); 485cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 486475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, MVT VT3, const SDValue *Ops, unsigned NumOps); 487cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 488475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1); 48983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 490475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2); 49183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 492475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 493cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, SDVTList VTs, 494475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 495694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng 496e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// MorphNodeTo - These *mutate* the specified node to have the specified 497e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// return type, opcode, and operands. 498e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT); 499475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, SDValue Op1); 500e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, 501475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 502e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, 503475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 504e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, 505475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 506e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, MVT VT2); 507e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 508475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, const SDValue *Ops, unsigned NumOps); 509e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 510475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, MVT VT3, const SDValue *Ops, unsigned NumOps); 511e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 512475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1); 513e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 514475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2); 515e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 516475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 517e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, SDVTList VTs, 518475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 519753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 5206ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// getTargetNode - These are used for target selectors to create a new node 5216ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// with specified return type(s), target opcode, and operands. 5226ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 5236ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// Note that getTargetNode returns the resultant node. If there is already a 5246ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// node of the specified opcode and operands, it returns that node instead of 5256ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// the current one. 52683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT); 527475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *getTargetNode(unsigned Opcode, MVT VT, SDValue Op1); 528475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *getTargetNode(unsigned Opcode, MVT VT, SDValue Op1, SDValue Op2); 52983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT, 530475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 53183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT, 532475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 53383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2); 534475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, SDValue Op1); 53583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, 536475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2); 53783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, 538475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 53983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, 540475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 54183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 542475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 54383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 544475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 54583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 546475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 54783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, MVT VT4, 548475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 549f877b735ad4987f26cafcbaf22aa4c2199458b5dDan Gohman SDNode *getTargetNode(unsigned Opcode, const std::vector<MVT> &ResultTys, 550475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 55108b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng 55208b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// getNodeIfExists - Get the specified node if it's already available, or 55308b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// else return NULL. 55408b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng SDNode *getNodeIfExists(unsigned Opcode, SDVTList VTs, 555475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 5566542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner 557f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// DAGUpdateListener - Clients of various APIs that cause global effects on 558f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// the DAG can optionally implement this interface. This allows the clients 559f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// to handle the various sorts of updates that happen. 560f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner class DAGUpdateListener { 561f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner public: 562f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual ~DAGUpdateListener(); 563edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 564edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeDeleted - The node N that was deleted and, if E is not null, an 565edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// equivalent node E that replaced it. 566edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands virtual void NodeDeleted(SDNode *N, SDNode *E) = 0; 567edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 568edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeUpdated - The node N that was updated. 569f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual void NodeUpdated(SDNode *N) = 0; 570f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner }; 571f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner 572f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// RemoveDeadNode - Remove the specified node from the system. If any of its 573f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// operands then becomes dead, remove them as well. Inform UpdateListener 574f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// for each node deleted. 575f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner void RemoveDeadNode(SDNode *N, DAGUpdateListener *UpdateListener = 0); 576f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner 5770fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman /// RemoveDeadNodes - This method deletes the unreachable nodes in the 5780fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman /// given list, and any nodes that become unreachable as a result. 5790fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman void RemoveDeadNodes(SmallVectorImpl<SDNode *> &DeadNodes, 5800fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman DAGUpdateListener *UpdateListener = 0); 5810fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman 5826542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 58326005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 58426005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 58526005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// if you have two nodes with identical results, use the third otherwise. 5866542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 587f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// These methods all take an optional UpdateListener, which (if not null) is 588f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// informed about nodes that are deleted and modified due to recursive 589f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// changes in the dag. 590fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 591475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesWith(SDValue From, SDValue Op, 592f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 593fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 594f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 595475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesWith(SDNode *From, const SDValue *To, 596f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 597fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 59880274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 599f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// uses of other values produced by From.Val alone. 600475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesOfValueWith(SDValue From, SDValue To, 601f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 60280274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 603e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// ReplaceAllUsesOfValuesWith - Like ReplaceAllUsesOfValueWith, but 604e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// for multiple values at once. This correctly handles the case where 605e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// there is an overlap between the From values and the To values. 606475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesOfValuesWith(const SDValue *From, const SDValue *To, 607e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman unsigned Num, 608e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman DAGUpdateListener *UpdateListener = 0); 609e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman 610e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng /// AssignTopologicalOrder - Assign a unique node id for each node in the DAG 61109fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// based on their topological order. It returns the maximum id and a vector 61209fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng /// of the SDNodes* in assigned order by reference. 61309fd736058ec3f69b856ae3ad65177bc31904a8cEvan Cheng unsigned AssignTopologicalOrder(std::vector<SDNode*> &TopOrder); 614e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng 6151efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// isCommutativeBinOp - Returns true if the opcode is a commutative binary 6161efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// operation. 6171efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng static bool isCommutativeBinOp(unsigned Opcode) { 6184ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // FIXME: This should get its info from the td file, so that we can include 6194ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // target info. 6201efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng switch (Opcode) { 6211efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADD: 6221efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MUL: 6231efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHU: 6241efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHS: 625b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::SMUL_LOHI: 626b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::UMUL_LOHI: 6271efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FADD: 6281efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FMUL: 6291efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::AND: 6301efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::OR: 6311efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::XOR: 6321efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDC: 6331efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDE: return true; 6341efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng default: return false; 6351efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 6361efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 6371efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng 638cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 639d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 64037ce9df0da6cddc3b8bfef9b63d33d058a0f2f15Chris Lattner /// CreateStackTemporary - Create a stack temporary, suitable for holding the 641364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang /// specified value type. If minAlign is specified, the slot size will have 642364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang /// at least that alignment. 643475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CreateStackTemporary(MVT VT, unsigned minAlign = 1); 644364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang 64551dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner /// FoldSetCC - Constant fold a setcc to true or false. 646475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FoldSetCC(MVT VT, SDValue N1, 647475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue N2, ISD::CondCode Cond); 64851dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner 6492e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// SignBitIsZero - Return true if the sign bit of Op is known to be zero. We 6502e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// use this predicate to simplify operations downstream. 651475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool SignBitIsZero(SDValue Op, unsigned Depth = 0) const; 6522e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman 653ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// MaskedValueIsZero - Return true if 'Op & Mask' is known to be zero. We 654ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// use this predicate to simplify operations downstream. Op and Mask are 655ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be the same type. 656475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool MaskedValueIsZero(SDValue Op, const APInt &Mask, unsigned Depth = 0) 657ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman const; 658ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 659ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeMaskedBits - Determine which of the bits specified in Mask are 660ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be either zero or one and return them in the KnownZero/KnownOne 661ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// bitsets. This code only analyzes bits in Mask, in order to short-circuit 662ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// processing. Targets can implement the computeMaskedBitsForTargetNode 663ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// method in the TargetLowering class to allow target nodes to be understood. 664475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ComputeMaskedBits(SDValue Op, const APInt &Mask, APInt &KnownZero, 665fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman APInt &KnownOne, unsigned Depth = 0) const; 666fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman 667ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeNumSignBits - Return the number of times the sign bit of the 668ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// register is replicated into the other bits. We know that at least 1 bit 669ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// is always equal to the sign bit (itself), but other cases can give us 670ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// information. For example, immediately after an "SRA X, 2", we know that 671ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// the top 3 bits are all equal to each other, so we return 3. Targets can 672ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// implement the ComputeNumSignBitsForTarget method in the TargetLowering 673ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// class to allow target nodes to be understood. 674475871a144eb604ddaf37503397ba0941442e5fbDan Gohman unsigned ComputeNumSignBits(SDValue Op, unsigned Depth = 0) const; 675a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng 676475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// isVerifiedDebugInfoDesc - Returns true if the specified SDValue has 677a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng /// been verified as a debug information descriptor. 678475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool isVerifiedDebugInfoDesc(SDValue Op) const; 67977f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng 68077f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// getShuffleScalarElt - Returns the scalar element that will make up the ith 68177f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// element of the result of the vector shuffle. 682475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getShuffleScalarElt(const SDNode *N, unsigned Idx); 683ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 684d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 6850e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman inline alist_traits<SDNode, LargestSDNode>::AllocatorType &getAllocator(); 6861b95095857b78e12138c22e76c7936611c51355bChris Lattner void RemoveNodeFromCSEMaps(SDNode *N); 6876542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner SDNode *AddNonLeafNodeToCSEMaps(SDNode *N); 688475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, SDValue Op, void *&InsertPos); 689475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, SDValue Op1, SDValue Op2, 690a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 691475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, const SDValue *Ops, unsigned NumOps, 692a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 693b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 694fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 6959c6e70eca9a49c146b26621cbcbb9464ceeac024Dan Gohman 6969c6e70eca9a49c146b26621cbcbb9464ceeac024Dan Gohman unsigned getMVTAlignment(MVT MemoryVT) const; 6977cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 698109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner // List of non-single value types. 699e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman std::vector<SDVTList> VTList; 700109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 7011cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner // Maps to auto-CSE operations. 7027cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 7031cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 70415e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 7058e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands std::map<MVT, SDNode*, MVT::compareRawBits> ExtendedValueTypeNodes; 7064b84086e89d86fb16f562166d9fea8df37db6be7Dan Gohman StringMap<SDNode*> ExternalSymbols; 7074b84086e89d86fb16f562166d9fea8df37db6be7Dan Gohman StringMap<SDNode*> TargetExternalSymbols; 708cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 709cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 7101080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 7111080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 7121080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 7131080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 7141080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 7151080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 7161080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 7171080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 7181080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 7191080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 720b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 721cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 722cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 723