SelectionDAG.h revision 7ade28cd62f5188951387e1056a46001388a21f9
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 18fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman#include "llvm/ADT/ilist.h" 19c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene#include "llvm/ADT/DenseSet.h" 20583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey#include "llvm/ADT/FoldingSet.h" 214b84086e89d86fb16f562166d9fea8df37db6be7Dan Gohman#include "llvm/ADT/StringMap.h" 22583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey#include "llvm/CodeGen/SelectionDAGNodes.h" 23b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 24acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman#include <cassert> 255892d47a625638a90afeb31dd4f6f80a2f9bacdeChris Lattner#include <vector> 26322812e603705e1c2037313633e72f689524b163Evan Cheng#include <map> 27eb19e40efbd3cae80c908a30cdf4d33450733c45Chris Lattner#include <string> 28d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 29d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 30fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman 31fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass AliasAnalysis; 32fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass TargetLowering; 33fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass TargetMachine; 34fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass MachineModuleInfo; 356e7a1617ac4a34792d9097b8d3644b72f57a45f7Devang Patelclass DwarfWriter; 36fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass MachineFunction; 37fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass MachineConstantPoolValue; 38fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass FunctionLoweringInfo; 39fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman 408e4018e2de52c534405d7155c7009d0b35afb861Cedric Venettemplate<> struct ilist_traits<SDNode> : public ilist_default_traits<SDNode> { 418e4018e2de52c534405d7155c7009d0b35afb861Cedric Venetprivate: 42fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman mutable SDNode Sentinel; 43fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanpublic: 44fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman ilist_traits() : Sentinel(ISD::DELETED_NODE, SDVTList()) {} 45fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman 46fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman SDNode *createSentinel() const { 47fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman return &Sentinel; 48fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman } 49fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman static void destroySentinel(SDNode *) {} 50fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman 51fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman static void deleteNode(SDNode *) { 52fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman assert(0 && "ilist_traits<SDNode> shouldn't see a deleteNode call!"); 53fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman } 54fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanprivate: 55fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman static void createNode(const SDNode &); 56fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman}; 57c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 5825cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sandsenum CombineLevel { 5925cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands Unrestricted, // Combine may create illegal operations and illegal types. 6025cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands NoIllegalTypes, // Combine may create illegal operations but no illegal types. 6125cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands NoIllegalOperations // Combine may only create legal operations and types. 6225cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands}; 6325cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands 64c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// SelectionDAG class - This is used to represent a portion of an LLVM function 65c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// in a low-level Data Dependence DAG representation suitable for instruction 66c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection. This DAG is constructed as the first step of instruction 67c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection in order to allow implementation of machine specific optimizations 68c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// and code simplifications. 69c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// 70c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// The representation used by the SelectionDAG is a target-independent 71c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// representation, which has some similarities to the GCC RTL representation, 72c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// but is significantly more simple, powerful, and is a graph form instead of a 73c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// linear form. 74cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner/// 75cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerclass SelectionDAG { 76063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &TLI; 777c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman MachineFunction *MF; 78ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner FunctionLoweringInfo &FLI; 7944c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey MachineModuleInfo *MMI; 806e7a1617ac4a34792d9097b8d3644b72f57a45f7Devang Patel DwarfWriter *DW; 81cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 82f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// EntryNode - The starting token. 83f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman SDNode EntryNode; 84f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 85f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// Root - The root of the entire DAG. 86f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman SDValue Root; 87cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 88213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// AllNodes - A linked list of nodes in the current DAG. 89fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman ilist<SDNode> AllNodes; 90fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman 91f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// NodeAllocatorType - The AllocatorType for allocating SDNodes. We use 92f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// pool allocation with recycling. 93f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman typedef RecyclingAllocator<BumpPtrAllocator, SDNode, sizeof(LargestSDNode), 94f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman AlignOf<MostAlignedSDNode>::Alignment> 95f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman NodeAllocatorType; 96f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 97f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// NodeAllocator - Pool allocation for nodes. 98f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman NodeAllocatorType NodeAllocator; 99691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 100213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSEMap - This structure is used to memoize nodes, automatically performing 101213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSE with existing nodes with a duplicate is requested. 102583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey FoldingSet<SDNode> CSEMap; 103213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner 104f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// OperandAllocator - Pool allocation for machine-opcode SDNode operands. 105f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman BumpPtrAllocator OperandAllocator; 106f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 107e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// Allocator - Pool allocation for misc. objects that are created once per 108e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// SelectionDAG. 109e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman BumpPtrAllocator Allocator; 110e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman 111d038e04188047eca4749d025ef1f05f7ae660bcaDuncan Sands /// VerifyNode - Sanity check the given node. Aborts if it is invalid. 112d038e04188047eca4749d025ef1f05f7ae660bcaDuncan Sands void VerifyNode(SDNode *N); 113d038e04188047eca4749d025ef1f05f7ae660bcaDuncan Sands 114c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// setGraphColorHelper - Implementation of setSubgraphColor. 115c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// Return whether we had to truncate the search. 116c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// 117c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene bool setSubgraphColorHelper(SDNode *N, const char *Color, DenseSet<SDNode *> &visited, 118c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene int level, bool &printed); 119c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene 120cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerpublic: 1217c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman SelectionDAG(TargetLowering &tli, FunctionLoweringInfo &fli); 122cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner ~SelectionDAG(); 123cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1247c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// init - Prepare this SelectionDAG to process code in the given 1257c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// MachineFunction. 1267c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// 1276e7a1617ac4a34792d9097b8d3644b72f57a45f7Devang Patel void init(MachineFunction &mf, MachineModuleInfo *mmi, DwarfWriter *dw); 1287c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman 1297c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// clear - Clear state and free memory necessary to make this 130f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// SelectionDAG ready to process a new block. 131f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// 1327c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman void clear(); 133f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 1347c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman MachineFunction &getMachineFunction() const { return *MF; } 135063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner const TargetMachine &getTarget() const; 136063287a76b5d1486f498fcf674a26d1155471a3fChris Lattner TargetLowering &getTargetLoweringInfo() const { return TLI; } 137ead0d88ad7659dabd66cc3149af97d98256fca84Chris Lattner FunctionLoweringInfo &getFunctionLoweringInfo() const { return FLI; } 13844c3b9fdd416c79f4b67cde1aecfced5921efd81Jim Laskey MachineModuleInfo *getMachineModuleInfo() const { return MMI; } 13983489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel DwarfWriter *getDwarfWriter() const { return DW; } 140cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 141ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// viewGraph - Pop up a GraphViz/gv window with the DAG rendered using 'dot'. 1421080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner /// 143462dc7f4960e5074ddf4769ec8b2ef1ba7a4d2c8Dan Gohman void viewGraph(const std::string &Title); 1440b12aef49087b57d276ed760a83525d1e2602144Dan Gohman void viewGraph(); 145ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 146ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#ifndef NDEBUG 147ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey std::map<const SDNode *, std::string> NodeGraphAttrs; 148ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#endif 1491080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 150ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// clearGraphAttrs - Clear all previously defined node graph attributes. 151ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Intended to be used from a debugging tool (eg. gdb). 152ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void clearGraphAttrs(); 153ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 154ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".) 155ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 156ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphAttrs(const SDNode *N, const char *Attrs); 157ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 158ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".) 159ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Used from getNodeAttributes. 160ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey const std::string getGraphAttrs(const SDNode *N) const; 161ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey 162ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphColor - Convenience for setting node color attribute. 163ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 164ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphColor(const SDNode *N, const char *Color); 1651080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 166c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// setGraphColor - Convenience for setting subgraph color attribute. 167c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// 168c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene void setSubgraphColor(SDNode *N, const char *Color); 169c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene 170fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman typedef ilist<SDNode>::const_iterator allnodes_const_iterator; 171b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); } 172b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_end() const { return AllNodes.end(); } 173fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman typedef ilist<SDNode>::iterator allnodes_iterator; 174b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_begin() { return AllNodes.begin(); } 175b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_end() { return AllNodes.end(); } 176fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman ilist<SDNode>::size_type allnodes_size() const { 1770e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman return AllNodes.size(); 1780e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman } 179b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner 180c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getRoot - Return the root tag of the SelectionDAG. 181cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 182475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue &getRoot() const { return Root; } 183cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 184c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getEntryNode - Return the token chain corresponding to the entry of the 185c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// function. 186f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman SDValue getEntryNode() const { 187f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman return SDValue(const_cast<SDNode *>(&EntryNode), 0); 188f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman } 189cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 190c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// setRoot - Set the current root tag of the SelectionDAG. 191cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 192475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue &setRoot(SDValue N) { 193ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif assert((!N.getNode() || N.getValueType() == MVT::Other) && 194acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman "DAG root value is not a chain!"); 195acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman return Root = N; 196acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman } 197cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1981d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// Combine - This iterates over the nodes in the SelectionDAG, folding 19925cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// certain types of nodes together, or eliminating superfluous nodes. The 20025cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// Level argument controls whether Combine is allowed to produce nodes and 20125cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// types that are illegal on the target. 20225cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands void Combine(CombineLevel Level, AliasAnalysis &AA, bool Fast); 20325cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands 20401d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// LegalizeTypes - This transforms the SelectionDAG into a SelectionDAG that 20525cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// only uses types natively supported by the target. Returns "true" if it 20625cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// made any changes. 20701d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// 20801d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// Note that this is an involved process that may invalidate pointers into 20901d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// the graph. 21025cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands bool LegalizeTypes(); 21125cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands 212c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Legalize - This transforms the SelectionDAG into a SelectionDAG that is 213c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// compatible with the target instruction selector, as indicated by the 214c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// TargetLowering object. 215cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 216c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Note that this is an involved process that may invalidate pointers into 217c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// the graph. 218b6862bbe34be4a832f709596f8dc971ab9895b06Duncan Sands void Legalize(bool TypesNeedLegalizing); 219c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 220d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// RemoveDeadNodes - This method deletes all unreachable nodes in the 221190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner /// SelectionDAG. 222190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner void RemoveDeadNodes(); 223130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 224130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// DeleteNode - Remove the specified node from the system. This node must 225130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// have no referrers. 226130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng void DeleteNode(SDNode *N); 227130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 22870046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getVTList - Return an SDVTList that represents the list of values 22970046e920fa37989a041af663ada2b2b646e258fChris Lattner /// specified. 23083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(MVT VT); 23183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(MVT VT1, MVT VT2); 23283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(MVT VT1, MVT VT2, MVT VT3); 23313d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling SDVTList getVTList(MVT VT1, MVT VT2, MVT VT3, MVT VT4); 23483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDVTList getVTList(const MVT *VTs, unsigned NumVTs); 23570046e920fa37989a041af663ada2b2b646e258fChris Lattner 23670046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getNodeValueTypes - These are obsolete, use getVTList instead. 23783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *getNodeValueTypes(MVT VT) { 23870046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT).VTs; 23970046e920fa37989a041af663ada2b2b646e258fChris Lattner } 24083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *getNodeValueTypes(MVT VT1, MVT VT2) { 24170046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2).VTs; 24270046e920fa37989a041af663ada2b2b646e258fChris Lattner } 24383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *getNodeValueTypes(MVT VT1, MVT VT2, MVT VT3) { 24470046e920fa37989a041af663ada2b2b646e258fChris Lattner return getVTList(VT1, VT2, VT3).VTs; 24570046e920fa37989a041af663ada2b2b646e258fChris Lattner } 24613d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling const MVT *getNodeValueTypes(MVT VT1, MVT VT2, MVT VT3, MVT VT4) { 24713d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling return getVTList(VT1, VT2, VT3, VT4).VTs; 24813d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling } 249f877b735ad4987f26cafcbaf22aa4c2199458b5dDan Gohman const MVT *getNodeValueTypes(const std::vector<MVT> &vtList) { 25013d57320bd212483463d4f8992d5787b29eda5dfBill Wendling return getVTList(&vtList[0], (unsigned)vtList.size()).VTs; 25170046e920fa37989a041af663ada2b2b646e258fChris Lattner } 25270046e920fa37989a041af663ada2b2b646e258fChris Lattner 25370046e920fa37989a041af663ada2b2b646e258fChris Lattner 2541b1a49714ef26225a42199cf2930529f31868322Chris Lattner //===--------------------------------------------------------------------===// 25570046e920fa37989a041af663ada2b2b646e258fChris Lattner // Node creation methods. 25670046e920fa37989a041af663ada2b2b646e258fChris Lattner // 257475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstant(uint64_t Val, MVT VT, bool isTarget = false); 258475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstant(const APInt &Val, MVT VT, bool isTarget = false); 2594fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman SDValue getConstant(const ConstantInt &Val, MVT VT, bool isTarget = false); 260475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getIntPtrConstant(uint64_t Val, bool isTarget = false); 261475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstant(uint64_t Val, MVT VT) { 262cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getConstant(Val, VT, true); 263cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 264475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstant(const APInt &Val, MVT VT) { 2656394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman return getConstant(Val, VT, true); 2666394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman } 2674fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman SDValue getTargetConstant(const ConstantInt &Val, MVT VT) { 2684fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman return getConstant(Val, VT, true); 2694fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman } 270475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstantFP(double Val, MVT VT, bool isTarget = false); 271475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstantFP(const APFloat& Val, MVT VT, bool isTarget = false); 2724fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman SDValue getConstantFP(const ConstantFP &CF, MVT VT, bool isTarget = false); 273475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstantFP(double Val, MVT VT) { 274c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantFP(Val, VT, true); 275c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 276475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstantFP(const APFloat& Val, MVT VT) { 277f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen return getConstantFP(Val, VT, true); 278f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen } 2794fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman SDValue getTargetConstantFP(const ConstantFP &Val, MVT VT) { 2804fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman return getConstantFP(Val, VT, true); 2814fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman } 282475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getGlobalAddress(const GlobalValue *GV, MVT VT, 2836520e20e4fb31f2e65e25c38b372b19d33a83df4Dan Gohman int64_t offset = 0, bool isTargetGA = false); 284475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetGlobalAddress(const GlobalValue *GV, MVT VT, 2856520e20e4fb31f2e65e25c38b372b19d33a83df4Dan Gohman int64_t offset = 0) { 286cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getGlobalAddress(GV, VT, offset, true); 287cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 288475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getFrameIndex(int FI, MVT VT, bool isTarget = false); 289475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetFrameIndex(int FI, MVT VT) { 290c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getFrameIndex(FI, VT, true); 291c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 292475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getJumpTable(int JTI, MVT VT, bool isTarget = false); 293475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetJumpTable(int JTI, MVT VT) { 294c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getJumpTable(JTI, VT, true); 295c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 296475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstantPool(Constant *C, MVT VT, 297c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offs = 0, bool isT=false); 298475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstantPool(Constant *C, MVT VT, 299c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner unsigned Align = 0, int Offset = 0) { 300c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantPool(C, VT, Align, Offset, true); 301c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 302475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getConstantPool(MachineConstantPoolValue *C, MVT VT, 303d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng unsigned Align = 0, int Offs = 0, bool isT=false); 304475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstantPool(MachineConstantPoolValue *C, 30583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT, unsigned Align = 0, 306d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng int Offset = 0) { 307d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng return getConstantPool(C, VT, Align, Offset, true); 308d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng } 309475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getBasicBlock(MachineBasicBlock *MBB); 310056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue getExternalSymbol(const char *Sym, MVT VT); 311056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue getTargetExternalSymbol(const char *Sym, MVT VT); 312475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getArgFlags(ISD::ArgFlagsTy Flags); 313475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getValueType(MVT); 314475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getRegister(unsigned Reg, MVT VT); 315475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getDbgStopPoint(SDValue Root, unsigned Line, unsigned Col, 31683489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel Value *CU); 317475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getLabel(unsigned Opcode, SDValue Root, unsigned LabelID); 318c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 319475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyToReg(SDValue Chain, unsigned Reg, SDValue N) { 320d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner return getNode(ISD::CopyToReg, MVT::Other, Chain, 321d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner getRegister(Reg, N.getValueType()), N); 322cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner } 323cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 324e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 325e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 326e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 327475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyToReg(SDValue Chain, unsigned Reg, SDValue N, 328475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag) { 32983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 330475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag }; 331ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.getNode() ? 4 : 3); 332e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 33366a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 334475871a144eb604ddaf37503397ba0941442e5fbDan Gohman // Similar to last getCopyToReg() except parameter Reg is a SDValue 335475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyToReg(SDValue Chain, SDValue Reg, SDValue N, 336475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag) { 33783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 338475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, Reg, N, Flag }; 339ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.getNode() ? 4 : 3); 34066a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng } 341e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 342475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyFromReg(SDValue Chain, unsigned Reg, MVT VT) { 34383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(VT, MVT::Other); 344475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, getRegister(Reg, VT) }; 3452fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 2, Ops, 2); 34618c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner } 347e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 348e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 349e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 350e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 351475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyFromReg(SDValue Chain, unsigned Reg, MVT VT, 352475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag) { 35383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(VT, MVT::Other, MVT::Flag); 354475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, getRegister(Reg, VT), Flag }; 355ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return getNode(ISD::CopyFromReg, VTs, 3, Ops, Flag.getNode() ? 3 : 2); 356e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 35718c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 358475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCondCode(ISD::CondCode Cond); 359cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 36077cdf30742284a173fe818417eb482224cdee8d4Mon P Wang /// Returns the ConvertRndSat Note: Avoid using this node because it may 36177cdf30742284a173fe818417eb482224cdee8d4Mon P Wang /// disappear in the future and most targets don't support it. 36277cdf30742284a173fe818417eb482224cdee8d4Mon P Wang SDValue getConvertRndSat(MVT VT, SDValue Val, SDValue DTy, SDValue STy, 36377cdf30742284a173fe818417eb482224cdee8d4Mon P Wang SDValue Rnd, SDValue Sat, ISD::CvtCode Code); 36477cdf30742284a173fe818417eb482224cdee8d4Mon P Wang 3651ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 3661ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 367475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getZeroExtendInReg(SDValue Op, MVT SrcTy); 3686a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner 3694c2454623841f05c6c665659b34c214950d12d7eBob Wilson /// getNOT - Create a bitwise NOT operation as (XOR Val, -1). 3704c2454623841f05c6c665659b34c214950d12d7eBob Wilson SDValue getNOT(SDValue Val, MVT VT); 3714c2454623841f05c6c665659b34c214950d12d7eBob Wilson 3726a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 3736a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// a flag result (to ensure it's not CSE'd). 374475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCALLSEQ_START(SDValue Chain, SDValue Op) { 37583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 376475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, Op }; 3772fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CALLSEQ_START, VTs, 2, Ops, 2); 3786a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 3791ccae666f596d5aeca5c9942995763600b622062Chris Lattner 3800f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// getCALLSEQ_END - Return a new CALLSEQ_END node, which always must have a 3810f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// flag result (to ensure it's not CSE'd). 382475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCALLSEQ_END(SDValue Chain, SDValue Op1, SDValue Op2, 383475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InFlag) { 3840f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SDVTList NodeTys = getVTList(MVT::Other, MVT::Flag); 385475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 4> Ops; 3860f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Chain); 3870f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op1); 3880f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op2); 3890f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(InFlag); 3900f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling return getNode(ISD::CALLSEQ_END, NodeTys, &Ops[0], 391ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif (unsigned)Ops.size() - (InFlag.getNode() == 0 ? 1 : 0)); 3920f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling } 3930f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling 394c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 395cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 396475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT); 3977ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT); 398475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, SDValue N); 3997ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, SDValue N); 400475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, SDValue N1, SDValue N2); 4017ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, SDValue N1, SDValue N2); 402475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 4037ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3); 4047ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, 4057ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3); 406475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 4077ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4); 4087ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, 4097ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4); 410475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 4117ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4, 4127ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N5); 4137ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, 4147ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4, 4157ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N5); 416475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 4177ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDUse *Ops, unsigned NumOps); 4187ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, 4197ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDUse *Ops, unsigned NumOps); 420475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 4217ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4227ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, 4237ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 424475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, const std::vector<MVT> &ResultTys, 4257ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4267ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, 4277ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const std::vector<MVT> &ResultTys, 4287ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 429475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, const MVT *VTs, unsigned NumVTs, 4307ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4317ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, const MVT *VTs, unsigned NumVTs, 4327ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4337ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, SDVTList VTs, 4347ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4357ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 4367ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4377ade28cd62f5188951387e1056a46001388a21f9Bill Wendling 438475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs); 4397ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs); 440475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, SDValue N); 4417ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, SDValue N); 442475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, SDValue N1, SDValue N2); 4437ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 4447ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2); 445475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, 44601f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue N1, SDValue N2, SDValue N3); 4477ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 4487ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3); 449475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, 45001f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue N1, SDValue N2, SDValue N3, SDValue N4); 4517ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 4527ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4); 453475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, 45401f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue N1, SDValue N2, SDValue N3, SDValue N4, 45501f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue N5); 4567ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 4577ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4, 4587ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N5); 459475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 460475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMemcpy(SDValue Chain, SDValue Dst, SDValue Src, 46101f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue Size, unsigned Align, bool AlwaysInline, 46201f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *DstSV, uint64_t DstSVOff, 46301f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *SrcSV, uint64_t SrcSVOff); 4645c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 465475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMemmove(SDValue Chain, SDValue Dst, SDValue Src, 46601f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue Size, unsigned Align, 46701f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *DstSV, uint64_t DstOSVff, 46801f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *SrcSV, uint64_t SrcSVOff); 4695c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 470475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMemset(SDValue Chain, SDValue Dst, SDValue Src, 47101f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue Size, unsigned Align, 47201f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *DstSV, uint64_t DstSVOff); 4735c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 4747cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 475475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// have an ISD::CondCode instead of an SDValue. 4767cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 477475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSetCC(MVT VT, SDValue LHS, SDValue RHS, 47801f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng ISD::CondCode Cond) { 4797cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner return getNode(ISD::SETCC, VT, LHS, RHS, getCondCode(Cond)); 480b43e9c196542acc80c9e4643809661065710848fNate Begeman } 481b43e9c196542acc80c9e4643809661065710848fNate Begeman 482b43e9c196542acc80c9e4643809661065710848fNate Begeman /// getVSetCC - Helper function to make it easier to build VSetCC's nodes 483475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// if you just have an ISD::CondCode instead of an SDValue. 484b43e9c196542acc80c9e4643809661065710848fNate Begeman /// 485475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getVSetCC(MVT VT, SDValue LHS, SDValue RHS, 48601f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng ISD::CondCode Cond) { 487b43e9c196542acc80c9e4643809661065710848fNate Begeman return getNode(ISD::VSETCC, VT, LHS, RHS, getCondCode(Cond)); 4887cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 4899373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 4909373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 491475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// just have an ISD::CondCode instead of an SDValue. 4929373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 493475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSelectCC(SDValue LHS, SDValue RHS, 49401f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue True, SDValue False, ISD::CondCode Cond) { 4952fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::SELECT_CC, True.getValueType(), LHS, RHS, True, False, 4962fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner getCondCode(Cond)); 4979373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 4987cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 499acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 500acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 501475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getVAArg(MVT VT, SDValue Chain, SDValue Ptr, 50201f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue SV); 5037cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 504c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// getAtomic - Gets a node for an atomic op, produces result and chain and 505c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// takes 3 operands 5060b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman SDValue getAtomic(unsigned Opcode, MVT MemVT, SDValue Chain, SDValue Ptr, 50701f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue Cmp, SDValue Swp, const Value* PtrVal, 50801f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng unsigned Alignment=0); 509ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 510c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// getAtomic - Gets a node for an atomic op, produces result and chain and 511c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// takes 2 operands. 5120b1d4a798d1dd2f39521b6b381cd1c1911c9ab52Dan Gohman SDValue getAtomic(unsigned Opcode, MVT MemVT, SDValue Chain, SDValue Ptr, 51301f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue Val, const Value* PtrVal, 51401f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng unsigned Alignment = 0); 515ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 516c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// getMemIntrinsicNode - Creates a MemIntrinsicNode that may produce a 517c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// result and takes a list of operands. 518c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang SDValue getMemIntrinsicNode(unsigned Opcode, 519c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang const MVT *VTs, unsigned NumVTs, 520c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang const SDValue *Ops, unsigned NumOps, 521c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang MVT MemVT, const Value *srcValue, int SVOff, 522c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang unsigned Align = 0, bool Vol = false, 523c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang bool ReadMem = true, bool WriteMem = true); 524c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang 525c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang SDValue getMemIntrinsicNode(unsigned Opcode, SDVTList VTList, 526c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang const SDValue *Ops, unsigned NumOps, 527c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang MVT MemVT, const Value *srcValue, int SVOff, 528c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang unsigned Align = 0, bool Vol = false, 529c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang bool ReadMem = true, bool WriteMem = true); 530c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang 5314bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands /// getMergeValues - Create a MERGE_VALUES node from the given operands. 532aaffa05d0a652dd3eae76a941d02d6b0469fa821Duncan Sands SDValue getMergeValues(const SDValue *Ops, unsigned NumOps); 533f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands 534095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman /// getCall - Create a CALL node from the given information. 535095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman /// 536095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman SDValue getCall(unsigned CallingConv, bool IsVarArgs, bool IsTailCall, 53786098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen bool isInreg, SDVTList VTs, const SDValue *Operands, 53886098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen unsigned NumOperands); 539095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman 540c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 541c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 542cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 543475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getLoad(MVT VT, SDValue Chain, SDValue Ptr, 54495c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 54595c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 546475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getExtLoad(ISD::LoadExtType ExtType, MVT VT, 547475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain, SDValue Ptr, const Value *SV, 54883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int SVOffset, MVT EVT, bool isVolatile=false, 54995c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 550475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getIndexedLoad(SDValue OrigLoad, SDValue Base, 551475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Offset, ISD::MemIndexedMode AM); 552475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType, 553475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT, SDValue Chain, 554475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr, SDValue Offset, 55583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const Value *SV, int SVOffset, MVT EVT, 556e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands bool isVolatile=false, unsigned Alignment=0); 5572d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 558ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// getStore - Helper function to build ISD::STORE nodes. 559ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// 560475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getStore(SDValue Chain, SDValue Val, SDValue Ptr, 56195c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 56295c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 563475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTruncStore(SDValue Chain, SDValue Val, SDValue Ptr, 56483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const Value *SV, int SVOffset, MVT TVT, 56595c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb bool isVolatile=false, unsigned Alignment=0); 566475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getIndexedStore(SDValue OrigStoe, SDValue Base, 567475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Offset, ISD::MemIndexedMode AM); 568ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng 569101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// getSrcValue - Construct a node to track a Value* through the backend. 570475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSrcValue(const Value *v); 57169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 572101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// getMemOperand - Construct a node to track a memory reference 573101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// through the backend. 574475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMemOperand(const MachineMemOperand &MO); 575cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 576b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 577b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 578b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 579b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 580b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 581b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 582475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op); 583475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2); 584475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2, 585475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3); 586475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2, 587475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3, SDValue Op4); 588475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2, 589475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3, SDValue Op4, SDValue Op5); 590475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, 591475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 5921b95095857b78e12138c22e76c7936611c51355bChris Lattner 5931b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 5941b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 5951b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 596e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// ~TargetOpcode in the node opcode field. The resultant node is returned. 59783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT); 598475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, SDValue Op1); 59983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 600475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 60183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 602475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 60383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 604475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 605cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, MVT VT2); 606cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 607475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, const SDValue *Ops, unsigned NumOps); 608cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 609475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, MVT VT3, const SDValue *Ops, unsigned NumOps); 61013d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling SDNode *SelectNodeTo(SDNode *N, unsigned MachineOpc, MVT VT1, 61113d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling MVT VT2, MVT VT3, MVT VT4, const SDValue *Ops, 61213d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling unsigned NumOps); 613cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 614475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1); 61583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 616475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2); 61783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 618475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 61913d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 62013d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling MVT VT2, MVT VT3, SDValue Op1, SDValue Op2, SDValue Op3); 621cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, SDVTList VTs, 622475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 623694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng 624e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// MorphNodeTo - These *mutate* the specified node to have the specified 625e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// return type, opcode, and operands. 626e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT); 627475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, SDValue Op1); 628e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, 629475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 630e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, 631475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 632e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, 633475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 634e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, MVT VT2); 635e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 636475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, const SDValue *Ops, unsigned NumOps); 637e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 638475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, MVT VT3, const SDValue *Ops, unsigned NumOps); 639e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 640475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1); 641e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 642475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2); 643e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 644475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 645e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, SDVTList VTs, 646475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 647753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 6486ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// getTargetNode - These are used for target selectors to create a new node 6496ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// with specified return type(s), target opcode, and operands. 6506ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 6516ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// Note that getTargetNode returns the resultant node. If there is already a 6526ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// node of the specified opcode and operands, it returns that node instead of 6536ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// the current one. 65483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT); 655475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *getTargetNode(unsigned Opcode, MVT VT, SDValue Op1); 656475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *getTargetNode(unsigned Opcode, MVT VT, SDValue Op1, SDValue Op2); 65783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT, 658475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 65983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT, 660475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 66183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2); 662475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, SDValue Op1); 66383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, 664475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2); 66583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, 666475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 66783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, 668475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 66983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 670475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 67183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 672475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 67383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 674475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 67583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, MVT VT4, 676475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 677f877b735ad4987f26cafcbaf22aa4c2199458b5dDan Gohman SDNode *getTargetNode(unsigned Opcode, const std::vector<MVT> &ResultTys, 678475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 67908b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng 68008b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// getNodeIfExists - Get the specified node if it's already available, or 68108b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// else return NULL. 68208b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng SDNode *getNodeIfExists(unsigned Opcode, SDVTList VTs, 683475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 6846542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner 685f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// DAGUpdateListener - Clients of various APIs that cause global effects on 686f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// the DAG can optionally implement this interface. This allows the clients 687f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// to handle the various sorts of updates that happen. 688f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner class DAGUpdateListener { 689f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner public: 690f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual ~DAGUpdateListener(); 691edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 692edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeDeleted - The node N that was deleted and, if E is not null, an 693edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// equivalent node E that replaced it. 694edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands virtual void NodeDeleted(SDNode *N, SDNode *E) = 0; 695edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 696edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeUpdated - The node N that was updated. 697f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual void NodeUpdated(SDNode *N) = 0; 698f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner }; 699f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner 700f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// RemoveDeadNode - Remove the specified node from the system. If any of its 701f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// operands then becomes dead, remove them as well. Inform UpdateListener 702f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// for each node deleted. 703f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner void RemoveDeadNode(SDNode *N, DAGUpdateListener *UpdateListener = 0); 704f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner 7050fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman /// RemoveDeadNodes - This method deletes the unreachable nodes in the 7060fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman /// given list, and any nodes that become unreachable as a result. 7070fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman void RemoveDeadNodes(SmallVectorImpl<SDNode *> &DeadNodes, 7080fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman DAGUpdateListener *UpdateListener = 0); 7090fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman 7106542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 71126005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 71226005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 71326005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// if you have two nodes with identical results, use the third otherwise. 7146542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 715f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// These methods all take an optional UpdateListener, which (if not null) is 716f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// informed about nodes that are deleted and modified due to recursive 717f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// changes in the dag. 718fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 7199ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// These functions only replace all existing uses. It's possible that as 7209ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// these replacements are being performed, CSE may cause the From node 7219ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// to be given new uses. These new uses of From are left in place, and 7229ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// not automatically transfered to To. 7239ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// 724475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesWith(SDValue From, SDValue Op, 725f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 726fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 727f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 728475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesWith(SDNode *From, const SDValue *To, 729f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 730fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 73180274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 732f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// uses of other values produced by From.Val alone. 733475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesOfValueWith(SDValue From, SDValue To, 734f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 73580274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 736e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// ReplaceAllUsesOfValuesWith - Like ReplaceAllUsesOfValueWith, but 737e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// for multiple values at once. This correctly handles the case where 738e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// there is an overlap between the From values and the To values. 739475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesOfValuesWith(const SDValue *From, const SDValue *To, 740e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman unsigned Num, 741e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman DAGUpdateListener *UpdateListener = 0); 742e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman 743f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// AssignTopologicalOrder - Topological-sort the AllNodes list and a 744f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// assign a unique node id for each node in the DAG based on their 745f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// topological order. Returns the number of nodes. 746f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman unsigned AssignTopologicalOrder(); 747e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng 7488be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// RepositionNode - Move node N in the AllNodes list to be immediately 7498be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// before the given iterator Position. This may be used to update the 7508be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// topological ordering when the list of nodes is modified. 7518be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman void RepositionNode(allnodes_iterator Position, SDNode *N) { 7528be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman AllNodes.insert(Position, AllNodes.remove(N)); 7538be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman } 7548be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman 7551efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// isCommutativeBinOp - Returns true if the opcode is a commutative binary 7561efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// operation. 7571efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng static bool isCommutativeBinOp(unsigned Opcode) { 7584ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // FIXME: This should get its info from the td file, so that we can include 7594ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // target info. 7601efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng switch (Opcode) { 7611efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADD: 7621efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MUL: 7631efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHU: 7641efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHS: 765b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::SMUL_LOHI: 766b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::UMUL_LOHI: 7671efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FADD: 7681efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FMUL: 7691efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::AND: 7701efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::OR: 7711efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::XOR: 7721efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDC: 7731efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDE: return true; 7741efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng default: return false; 7751efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 7761efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 7771efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng 778cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 779d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 78037ce9df0da6cddc3b8bfef9b63d33d058a0f2f15Chris Lattner /// CreateStackTemporary - Create a stack temporary, suitable for holding the 781364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang /// specified value type. If minAlign is specified, the slot size will have 782364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang /// at least that alignment. 783475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CreateStackTemporary(MVT VT, unsigned minAlign = 1); 78447d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 78547d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands /// CreateStackTemporary - Create a stack temporary suitable for holding 78647d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands /// either of the specified value types. 78747d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands SDValue CreateStackTemporary(MVT VT1, MVT VT2); 78847d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 789f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling /// FoldConstantArithmetic - 790f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling SDValue FoldConstantArithmetic(unsigned Opcode, 791f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling MVT VT, 792f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling ConstantSDNode *Cst1, 793f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling ConstantSDNode *Cst2); 794f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling 79551dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner /// FoldSetCC - Constant fold a setcc to true or false. 796475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FoldSetCC(MVT VT, SDValue N1, 797f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling SDValue N2, ISD::CondCode Cond); 79851dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner 7992e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// SignBitIsZero - Return true if the sign bit of Op is known to be zero. We 8002e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// use this predicate to simplify operations downstream. 801475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool SignBitIsZero(SDValue Op, unsigned Depth = 0) const; 8022e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman 803ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// MaskedValueIsZero - Return true if 'Op & Mask' is known to be zero. We 804ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// use this predicate to simplify operations downstream. Op and Mask are 805ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be the same type. 806475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool MaskedValueIsZero(SDValue Op, const APInt &Mask, unsigned Depth = 0) 807ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman const; 808ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 809ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeMaskedBits - Determine which of the bits specified in Mask are 810ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be either zero or one and return them in the KnownZero/KnownOne 811ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// bitsets. This code only analyzes bits in Mask, in order to short-circuit 812ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// processing. Targets can implement the computeMaskedBitsForTargetNode 813ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// method in the TargetLowering class to allow target nodes to be understood. 814475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ComputeMaskedBits(SDValue Op, const APInt &Mask, APInt &KnownZero, 815fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman APInt &KnownOne, unsigned Depth = 0) const; 816fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman 817ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeNumSignBits - Return the number of times the sign bit of the 818ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// register is replicated into the other bits. We know that at least 1 bit 819ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// is always equal to the sign bit (itself), but other cases can give us 820ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// information. For example, immediately after an "SRA X, 2", we know that 821ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// the top 3 bits are all equal to each other, so we return 3. Targets can 822ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// implement the ComputeNumSignBitsForTarget method in the TargetLowering 823ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// class to allow target nodes to be understood. 824475871a144eb604ddaf37503397ba0941442e5fbDan Gohman unsigned ComputeNumSignBits(SDValue Op, unsigned Depth = 0) const; 825a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng 826475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// isVerifiedDebugInfoDesc - Returns true if the specified SDValue has 827a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng /// been verified as a debug information descriptor. 828475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool isVerifiedDebugInfoDesc(SDValue Op) const; 82977f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng 83077f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// getShuffleScalarElt - Returns the scalar element that will make up the ith 83177f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// element of the result of the vector shuffle. 832475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getShuffleScalarElt(const SDNode *N, unsigned Idx); 833ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 834d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 835095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman bool RemoveNodeFromCSEMaps(SDNode *N); 836399461095b033438d1f5863cd0d6f82a616f74dcDan Gohman void AddModifiedNodeToCSEMaps(SDNode *N, DAGUpdateListener *UpdateListener); 837475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, SDValue Op, void *&InsertPos); 838475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, SDValue Op1, SDValue Op2, 839a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 840475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, const SDValue *Ops, unsigned NumOps, 841a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 842b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 843fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 844c53361294957b63a9c1e405256c6f0a81db1685cDan Gohman void DeallocateNode(SDNode *N); 8459c6e70eca9a49c146b26621cbcbb9464ceeac024Dan Gohman 8469c6e70eca9a49c146b26621cbcbb9464ceeac024Dan Gohman unsigned getMVTAlignment(MVT MemoryVT) const; 847f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 848f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman void allnodes_clear(); 8497cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 850101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// VTList - List of non-single value types. 851e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman std::vector<SDVTList> VTList; 852109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 853101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// CondCodeNodes - Maps to auto-CSE operations. 8547cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 8551cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 85615e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 8578e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands std::map<MVT, SDNode*, MVT::compareRawBits> ExtendedValueTypeNodes; 858056292fd738924f3f7703725d8f630983794b5a5Bill Wendling StringMap<SDNode*> ExternalSymbols; 859056292fd738924f3f7703725d8f630983794b5a5Bill Wendling StringMap<SDNode*> TargetExternalSymbols; 860cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 861cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 8621080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 8631080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 8641080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 8651080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 8661080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 8671080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 8681080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 8691080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 8701080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 8711080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 872b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 873cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 874cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 875