SelectionDAG.h revision 8ad9b43e690e8773cf836b30e8da26bc71e18844
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 } 3098ad9b43e690e8773cf836b30e8da26bc71e18844Dale Johannesen // When generating a branch to a BB, we don't in general know enough 3108ad9b43e690e8773cf836b30e8da26bc71e18844Dale Johannesen // to provide debug info for the BB at that time, so keep this one around. 311475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getBasicBlock(MachineBasicBlock *MBB); 312e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getBasicBlock(MachineBasicBlock *MBB, DebugLoc dl); 313056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue getExternalSymbol(const char *Sym, MVT VT); 314e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getExternalSymbol(const char *Sym, DebugLoc dl, MVT VT); 315056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue getTargetExternalSymbol(const char *Sym, MVT VT); 316e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getTargetExternalSymbol(const char *Sym, DebugLoc dl, MVT VT); 317475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getArgFlags(ISD::ArgFlagsTy Flags); 318475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getValueType(MVT); 319475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getRegister(unsigned Reg, MVT VT); 320475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getDbgStopPoint(SDValue Root, unsigned Line, unsigned Col, 32183489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel Value *CU); 3228ad9b43e690e8773cf836b30e8da26bc71e18844Dale Johannesen// SDValue getLabel(unsigned Opcode, SDValue Root, unsigned LabelID); 323e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getLabel(unsigned Opcode, DebugLoc dl, SDValue Root, 324e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned LabelID); 325c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 326475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyToReg(SDValue Chain, unsigned Reg, SDValue N) { 327d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner return getNode(ISD::CopyToReg, MVT::Other, Chain, 328d5d0f9bd20d9df07d6b4d41b7e8ed6d33b6a649dChris Lattner getRegister(Reg, N.getValueType()), N); 329cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner } 3300f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyToReg(SDValue Chain, DebugLoc dl, unsigned Reg, SDValue N) { 3310f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen return getNode(ISD::CopyToReg, dl, MVT::Other, Chain, 3320f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen getRegister(Reg, N.getValueType()), N); 3330f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 334cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 335e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 336e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 337e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 338475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyToReg(SDValue Chain, unsigned Reg, SDValue N, 339475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag) { 34083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 341475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag }; 342ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.getNode() ? 4 : 3); 343e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 3440f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyToReg(SDValue Chain, DebugLoc dl, unsigned Reg, SDValue N, 3450f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Flag) { 3460f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 3470f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag }; 3480f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen return getNode(ISD::CopyToReg, dl, VTs, 2, Ops, Flag.getNode() ? 4 : 3); 3490f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 35066a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 351475871a144eb604ddaf37503397ba0941442e5fbDan Gohman // Similar to last getCopyToReg() except parameter Reg is a SDValue 352475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyToReg(SDValue Chain, SDValue Reg, SDValue N, 353475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag) { 35483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 355475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, Reg, N, Flag }; 356ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return getNode(ISD::CopyToReg, VTs, 2, Ops, Flag.getNode() ? 4 : 3); 35766a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng } 3580f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyToReg(SDValue Chain, DebugLoc dl, SDValue Reg, SDValue N, 3590f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Flag) { 3600f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 3610f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Ops[] = { Chain, Reg, N, Flag }; 3620f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen return getNode(ISD::CopyToReg, dl, VTs, 2, Ops, Flag.getNode() ? 4 : 3); 3630f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 364e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 365475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyFromReg(SDValue Chain, unsigned Reg, MVT VT) { 36683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(VT, MVT::Other); 367475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, getRegister(Reg, VT) }; 3682fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CopyFromReg, VTs, 2, Ops, 2); 36918c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner } 3700f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyFromReg(SDValue Chain, DebugLoc dl, unsigned Reg, MVT VT) { 3710f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen const MVT *VTs = getNodeValueTypes(VT, MVT::Other); 3720f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Ops[] = { Chain, getRegister(Reg, VT) }; 3730f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen return getNode(ISD::CopyFromReg, dl, VTs, 2, Ops, 2); 3740f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 375e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner 376e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 377e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 378e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 379475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCopyFromReg(SDValue Chain, unsigned Reg, MVT VT, 380475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Flag) { 38183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(VT, MVT::Other, MVT::Flag); 382475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, getRegister(Reg, VT), Flag }; 383ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return getNode(ISD::CopyFromReg, VTs, 3, Ops, Flag.getNode() ? 3 : 2); 384e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner } 3850f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyFromReg(SDValue Chain, DebugLoc dl, unsigned Reg, MVT VT, 3860f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Flag) { 3870f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen const MVT *VTs = getNodeValueTypes(VT, MVT::Other, MVT::Flag); 3880f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Ops[] = { Chain, getRegister(Reg, VT), Flag }; 3890f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen return getNode(ISD::CopyFromReg, dl, VTs, 3, Ops, Flag.getNode() ? 3 : 2); 3900f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 39118c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 392475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCondCode(ISD::CondCode Cond); 393cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 39477cdf30742284a173fe818417eb482224cdee8d4Mon P Wang /// Returns the ConvertRndSat Note: Avoid using this node because it may 39577cdf30742284a173fe818417eb482224cdee8d4Mon P Wang /// disappear in the future and most targets don't support it. 3968ad9b43e690e8773cf836b30e8da26bc71e18844Dale Johannesen// SDValue getConvertRndSat(MVT VT, SDValue Val, SDValue DTy, SDValue STy, 3978ad9b43e690e8773cf836b30e8da26bc71e18844Dale Johannesen// SDValue Rnd, SDValue Sat, ISD::CvtCode Code); 3980f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getConvertRndSat(MVT VT, DebugLoc dl, SDValue Val, SDValue DTy, 3990f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue STy, 4000f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Rnd, SDValue Sat, ISD::CvtCode Code); 40177cdf30742284a173fe818417eb482224cdee8d4Mon P Wang 4021ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 4031ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 404475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getZeroExtendInReg(SDValue Op, MVT SrcTy); 4056ce610f04bb232ce8b57e50e885f30f65d19e1a6Bill Wendling SDValue getZeroExtendInReg(SDValue Op, DebugLoc DL, MVT SrcTy); 4066a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner 4074c2454623841f05c6c665659b34c214950d12d7eBob Wilson /// getNOT - Create a bitwise NOT operation as (XOR Val, -1). 40841b9d278add97c744930aa2a0048ff1c01e48c4fBill Wendling SDValue getNOT(DebugLoc DL, SDValue Val, MVT VT); 4094c2454623841f05c6c665659b34c214950d12d7eBob Wilson 4106a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 4116a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// a flag result (to ensure it's not CSE'd). 412475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCALLSEQ_START(SDValue Chain, SDValue Op) { 41383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const MVT *VTs = getNodeValueTypes(MVT::Other, MVT::Flag); 414475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, Op }; 4152fa6d3b1fcadbde90eaee0e8e89aebd81630b662Chris Lattner return getNode(ISD::CALLSEQ_START, VTs, 2, Ops, 2); 4166a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 4171ccae666f596d5aeca5c9942995763600b622062Chris Lattner 4180f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// getCALLSEQ_END - Return a new CALLSEQ_END node, which always must have a 4190f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// flag result (to ensure it's not CSE'd). 420475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCALLSEQ_END(SDValue Chain, SDValue Op1, SDValue Op2, 421475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InFlag) { 4220f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling SDVTList NodeTys = getVTList(MVT::Other, MVT::Flag); 423475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 4> Ops; 4240f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Chain); 4250f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op1); 4260f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op2); 4270f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(InFlag); 4280f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling return getNode(ISD::CALLSEQ_END, NodeTys, &Ops[0], 429ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif (unsigned)Ops.size() - (InFlag.getNode() == 0 ? 1 : 0)); 4300f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling } 4310f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling 432c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 433cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 434475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT); 4357ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT); 436475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, SDValue N); 4377ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, SDValue N); 438475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, SDValue N1, SDValue N2); 4397ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, SDValue N1, SDValue N2); 440475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 4417ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3); 4427ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, 4437ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3); 444475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 4457ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4); 4467ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, 4477ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4); 448475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 4497ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4, 4507ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N5); 4517ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, 4527ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4, 4537ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N5); 454475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 4557ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDUse *Ops, unsigned NumOps); 4567ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, 4577ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDUse *Ops, unsigned NumOps); 458475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, MVT VT, 4597ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4607ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, MVT VT, 4617ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 462475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, const std::vector<MVT> &ResultTys, 4637ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4647ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, 4657ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const std::vector<MVT> &ResultTys, 4667ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 467475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, const MVT *VTs, unsigned NumVTs, 4687ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4697ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, const MVT *VTs, unsigned NumVTs, 4707ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4717ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, SDVTList VTs, 4727ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4737ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 4747ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 4757ade28cd62f5188951387e1056a46001388a21f9Bill Wendling 476475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs); 4777ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs); 478475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, SDValue N); 4797ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, SDValue N); 480475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, SDValue N1, SDValue N2); 4817ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 4827ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2); 483475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, 48401f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue N1, SDValue N2, SDValue N3); 4857ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 4867ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3); 487475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, 48801f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue N1, SDValue N2, SDValue N3, SDValue N4); 4897ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 4907ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4); 491475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getNode(unsigned Opcode, SDVTList VTs, 49201f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue N1, SDValue N2, SDValue N3, SDValue N4, 49301f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue N5); 4947ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 4957ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4, 4967ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N5); 497475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 4980f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getMemcpy(SDValue Chain, DebugLoc dl, SDValue Dst, SDValue Src, 4990f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Size, unsigned Align, bool AlwaysInline, 5000f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen const Value *DstSV, uint64_t DstSVOff, 50101f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *SrcSV, uint64_t SrcSVOff); 5025c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 5030f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getMemmove(SDValue Chain, DebugLoc dl, SDValue Dst, SDValue Src, 5040f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Size, unsigned Align, 5050f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen const Value *DstSV, uint64_t DstOSVff, 50601f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *SrcSV, uint64_t SrcSVOff); 5075c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 5080f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getMemset(SDValue Chain, DebugLoc dl, SDValue Dst, SDValue Src, 5090f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Size, unsigned Align, 51001f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *DstSV, uint64_t DstSVOff); 5115c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 5127cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 513475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// have an ISD::CondCode instead of an SDValue. 5147cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 515475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSetCC(MVT VT, SDValue LHS, SDValue RHS, 51601f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng ISD::CondCode Cond) { 517d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::SETCC, DebugLoc::getUnknownLoc(), VT, 518d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling LHS, RHS, getCondCode(Cond)); 519d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling } 520d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling SDValue getSetCC(DebugLoc DL, MVT VT, SDValue LHS, SDValue RHS, 521d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling ISD::CondCode Cond) { 522d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::SETCC, DL, VT, LHS, RHS, getCondCode(Cond)); 523b43e9c196542acc80c9e4643809661065710848fNate Begeman } 524b43e9c196542acc80c9e4643809661065710848fNate Begeman 525b43e9c196542acc80c9e4643809661065710848fNate Begeman /// getVSetCC - Helper function to make it easier to build VSetCC's nodes 526475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// if you just have an ISD::CondCode instead of an SDValue. 527b43e9c196542acc80c9e4643809661065710848fNate Begeman /// 528475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getVSetCC(MVT VT, SDValue LHS, SDValue RHS, 52901f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng ISD::CondCode Cond) { 530d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::VSETCC, DebugLoc::getUnknownLoc(), VT, 531d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling LHS, RHS, getCondCode(Cond)); 532d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling } 533d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling SDValue getVSetCC(DebugLoc DL, MVT VT, SDValue LHS, SDValue RHS, 534d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling ISD::CondCode Cond) { 535d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::VSETCC, DL, VT, LHS, RHS, getCondCode(Cond)); 5367cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 5379373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 5389373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 539475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// just have an ISD::CondCode instead of an SDValue. 5409373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 541475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSelectCC(SDValue LHS, SDValue RHS, 54201f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng SDValue True, SDValue False, ISD::CondCode Cond) { 543d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::SELECT_CC, DebugLoc::getUnknownLoc(), True.getValueType(), 544d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling LHS, RHS, True, False, getCondCode(Cond)); 545d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling } 546d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling SDValue getSelectCC(DebugLoc DL, SDValue LHS, SDValue RHS, 547d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling SDValue True, SDValue False, ISD::CondCode Cond) { 548d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::SELECT_CC, DL, True.getValueType(), 549d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling LHS, RHS, True, False, getCondCode(Cond)); 5509373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 5517cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 552acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 553acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 5540f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getVAArg(MVT VT, DebugLoc dl, SDValue Chain, SDValue Ptr, 5550f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue SV); 5567cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 557c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// getAtomic - Gets a node for an atomic op, produces result and chain and 558c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// takes 3 operands 559e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getAtomic(unsigned Opcode, DebugLoc dl, MVT MemVT, SDValue Chain, 560e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Ptr, SDValue Cmp, SDValue Swp, const Value* PtrVal, 561e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Alignment=0); 562ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 563c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// getAtomic - Gets a node for an atomic op, produces result and chain and 564c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// takes 2 operands. 565e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getAtomic(unsigned Opcode, DebugLoc dl, MVT MemVT, SDValue Chain, 566e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Ptr, SDValue Val, const Value* PtrVal, 567e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Alignment = 0); 568ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 569c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// getMemIntrinsicNode - Creates a MemIntrinsicNode that may produce a 570c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// result and takes a list of operands. 571c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang SDValue getMemIntrinsicNode(unsigned Opcode, 572c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang const MVT *VTs, unsigned NumVTs, 573c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang const SDValue *Ops, unsigned NumOps, 574c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang MVT MemVT, const Value *srcValue, int SVOff, 575c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang unsigned Align = 0, bool Vol = false, 576c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang bool ReadMem = true, bool WriteMem = true); 577e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getMemIntrinsicNode(unsigned Opcode, DebugLoc dl, 578e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const MVT *VTs, unsigned NumVTs, 579e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const SDValue *Ops, unsigned NumOps, 580e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen MVT MemVT, const Value *srcValue, int SVOff, 581e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Align = 0, bool Vol = false, 582e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen bool ReadMem = true, bool WriteMem = true); 583c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang 584c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang SDValue getMemIntrinsicNode(unsigned Opcode, SDVTList VTList, 585c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang const SDValue *Ops, unsigned NumOps, 586c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang MVT MemVT, const Value *srcValue, int SVOff, 587c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang unsigned Align = 0, bool Vol = false, 588c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang bool ReadMem = true, bool WriteMem = true); 589e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getMemIntrinsicNode(unsigned Opcode, DebugLoc dl, SDVTList VTList, 590e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const SDValue *Ops, unsigned NumOps, 591e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen MVT MemVT, const Value *srcValue, int SVOff, 592e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Align = 0, bool Vol = false, 593e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen bool ReadMem = true, bool WriteMem = true); 594c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang 5954bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands /// getMergeValues - Create a MERGE_VALUES node from the given operands. 596aaffa05d0a652dd3eae76a941d02d6b0469fa821Duncan Sands SDValue getMergeValues(const SDValue *Ops, unsigned NumOps); 59754c94525f420cab274af60e98a77f081f96e59c2Dale Johannesen SDValue getMergeValues(const SDValue *Ops, unsigned NumOps, DebugLoc dl); 598f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands 599095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman /// getCall - Create a CALL node from the given information. 600095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman /// 601e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getCall(unsigned CallingConv, DebugLoc dl, bool IsVarArgs, 602e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen bool IsTailCall, bool isInreg, SDVTList VTs, 603e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const SDValue *Operands, unsigned NumOperands); 604095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman 605c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 606c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 607cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 608475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getLoad(MVT VT, SDValue Chain, SDValue Ptr, 60995c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 61095c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 611e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getLoad(MVT VT, DebugLoc dl, SDValue Chain, SDValue Ptr, 612e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const Value *SV, int SVOffset, bool isVolatile=false, 613e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Alignment=0); 614475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getExtLoad(ISD::LoadExtType ExtType, MVT VT, 615475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain, SDValue Ptr, const Value *SV, 61683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int SVOffset, MVT EVT, bool isVolatile=false, 61795c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 618e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getExtLoad(ISD::LoadExtType ExtType, DebugLoc dl, MVT VT, 619e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Chain, SDValue Ptr, const Value *SV, 620e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen int SVOffset, MVT EVT, bool isVolatile=false, 621e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Alignment=0); 622475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getIndexedLoad(SDValue OrigLoad, SDValue Base, 623475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Offset, ISD::MemIndexedMode AM); 624e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getIndexedLoad(SDValue OrigLoad, DebugLoc dl, SDValue Base, 625e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Offset, ISD::MemIndexedMode AM); 626475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType, 627475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT, SDValue Chain, 628475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr, SDValue Offset, 62983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const Value *SV, int SVOffset, MVT EVT, 630e10efce22502d1a1855d25baf1458660f4ba6f33Duncan Sands bool isVolatile=false, unsigned Alignment=0); 631e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getLoad(ISD::MemIndexedMode AM, DebugLoc dl, ISD::LoadExtType ExtType, 632e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen MVT VT, SDValue Chain, 633e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Ptr, SDValue Offset, 634e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const Value *SV, int SVOffset, MVT EVT, 635e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen bool isVolatile=false, unsigned Alignment=0); 6362d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 637ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// getStore - Helper function to build ISD::STORE nodes. 638ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// 639475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getStore(SDValue Chain, SDValue Val, SDValue Ptr, 64095c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb const Value *SV, int SVOffset, bool isVolatile=false, 64195c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb unsigned Alignment=0); 642e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr, 643e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const Value *SV, int SVOffset, bool isVolatile=false, 644e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Alignment=0); 645475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTruncStore(SDValue Chain, SDValue Val, SDValue Ptr, 64683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands const Value *SV, int SVOffset, MVT TVT, 64795c218a83ecf77590b9dc40c636720772d2b5cd7Christopher Lamb bool isVolatile=false, unsigned Alignment=0); 648e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getTruncStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr, 649e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const Value *SV, int SVOffset, MVT TVT, 650e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen bool isVolatile=false, unsigned Alignment=0); 651475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getIndexedStore(SDValue OrigStoe, SDValue Base, 652475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Offset, ISD::MemIndexedMode AM); 653e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getIndexedStore(SDValue OrigStoe, DebugLoc dl, SDValue Base, 654e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Offset, ISD::MemIndexedMode AM); 655ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng 656101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// getSrcValue - Construct a node to track a Value* through the backend. 657475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSrcValue(const Value *v); 65869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 659101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// getMemOperand - Construct a node to track a memory reference 660101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// through the backend. 661475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getMemOperand(const MachineMemOperand &MO); 662cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 66392abc62399881ba9c525be80362c134ad836e2d9Duncan Sands /// getShiftAmountOperand - Return the specified value casted to 66492abc62399881ba9c525be80362c134ad836e2d9Duncan Sands /// the target's desired shift amount type. 66592abc62399881ba9c525be80362c134ad836e2d9Duncan Sands SDValue getShiftAmountOperand(SDValue Op); 66692abc62399881ba9c525be80362c134ad836e2d9Duncan Sands 667b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 668b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 669b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 670b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 671b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 672b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 673475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op); 674475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2); 675475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2, 676475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3); 677475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2, 678475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3, SDValue Op4); 679475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, SDValue Op1, SDValue Op2, 680475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3, SDValue Op4, SDValue Op5); 681475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue UpdateNodeOperands(SDValue N, 682475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 6831b95095857b78e12138c22e76c7936611c51355bChris Lattner 6841b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 6851b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 6861b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 687e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// ~TargetOpcode in the node opcode field. The resultant node is returned. 68883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT); 689475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, SDValue Op1); 69083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 691475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 69283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 693475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 69483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT, 695475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 696cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, MVT VT2); 697cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 698475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, const SDValue *Ops, unsigned NumOps); 699cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 700475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, MVT VT3, const SDValue *Ops, unsigned NumOps); 70113d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling SDNode *SelectNodeTo(SDNode *N, unsigned MachineOpc, MVT VT1, 70213d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling MVT VT2, MVT VT3, MVT VT4, const SDValue *Ops, 70313d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling unsigned NumOps); 704cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 705475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1); 70683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 707475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2); 70883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 709475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 71013d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, MVT VT1, 71113d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling MVT VT2, MVT VT3, SDValue Op1, SDValue Op2, SDValue Op3); 712cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, SDVTList VTs, 713475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 714694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng 715e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// MorphNodeTo - These *mutate* the specified node to have the specified 716e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// return type, opcode, and operands. 717e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT); 718475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, SDValue Op1); 719e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, 720475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 721e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, 722475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 723e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT, 724475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 725e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, MVT VT2); 726e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 727475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, const SDValue *Ops, unsigned NumOps); 728e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 729475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, MVT VT3, const SDValue *Ops, unsigned NumOps); 730e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 731475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1); 732e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 733475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2); 734e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, MVT VT1, 735475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 736e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, SDVTList VTs, 737475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 738753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 7396ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// getTargetNode - These are used for target selectors to create a new node 7406ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// with specified return type(s), target opcode, and operands. 7416ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 7426ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// Note that getTargetNode returns the resultant node. If there is already a 7436ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// node of the specified opcode and operands, it returns that node instead of 7446ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// the current one. 74583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT); 74656ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT); 74756ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 748475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *getTargetNode(unsigned Opcode, MVT VT, SDValue Op1); 74956ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT, SDValue Op1); 75056ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 751475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *getTargetNode(unsigned Opcode, MVT VT, SDValue Op1, SDValue Op2); 75256ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT, SDValue Op1, 75356ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDValue Op2); 75456ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 75583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT, 756475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 75756ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT, 758e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Op1, SDValue Op2, SDValue Op3); 75956ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 76083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT, 761475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 76256ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT, 763e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const SDValue *Ops, unsigned NumOps); 76456ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 76583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2); 76656ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT1, MVT VT2); 76756ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 768475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, SDValue Op1); 76956ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT1, MVT VT2, 77056ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDValue Op1); 77156ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 77283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, 773475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2); 77456ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT1, 775e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen MVT VT2, SDValue Op1, SDValue Op2); 77656ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 77783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, 778475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 77956ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT1, 780e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen MVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 78156ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 78283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, 783475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 78456ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT1, MVT VT2, 785e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const SDValue *Ops, unsigned NumOps); 78656ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 78783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 788475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 78956ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT1, MVT VT2, MVT VT3, 790e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Op1, SDValue Op2); 79156ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 79283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 793475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 79456ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT1, MVT VT2, MVT VT3, 795e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Op1, SDValue Op2, SDValue Op3); 79656ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 79783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, 798475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 79956ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT1, MVT VT2, MVT VT3, 800e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const SDValue *Ops, unsigned NumOps); 80156ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 80283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SDNode *getTargetNode(unsigned Opcode, MVT VT1, MVT VT2, MVT VT3, MVT VT4, 803475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 80456ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, MVT VT1, MVT VT2, MVT VT3, 80556ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling MVT VT4, const SDValue *Ops, unsigned NumOps); 80656ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling 807f877b735ad4987f26cafcbaf22aa4c2199458b5dDan Gohman SDNode *getTargetNode(unsigned Opcode, const std::vector<MVT> &ResultTys, 808475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 80956ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling SDNode *getTargetNode(unsigned Opcode, DebugLoc dl, 81056ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling const std::vector<MVT> &ResultTys, const SDValue *Ops, 81156ab1a281511dde8c173cd2dc8ef55a916049037Bill Wendling unsigned NumOps); 81208b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng 81308b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// getNodeIfExists - Get the specified node if it's already available, or 81408b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// else return NULL. 81508b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng SDNode *getNodeIfExists(unsigned Opcode, SDVTList VTs, 816475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 8176542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner 818f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// DAGUpdateListener - Clients of various APIs that cause global effects on 819f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// the DAG can optionally implement this interface. This allows the clients 820f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// to handle the various sorts of updates that happen. 821f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner class DAGUpdateListener { 822f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner public: 823f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual ~DAGUpdateListener(); 824edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 825edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeDeleted - The node N that was deleted and, if E is not null, an 826edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// equivalent node E that replaced it. 827edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands virtual void NodeDeleted(SDNode *N, SDNode *E) = 0; 828edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 829edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeUpdated - The node N that was updated. 830f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual void NodeUpdated(SDNode *N) = 0; 831f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner }; 832f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner 833f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// RemoveDeadNode - Remove the specified node from the system. If any of its 834f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// operands then becomes dead, remove them as well. Inform UpdateListener 835f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// for each node deleted. 836f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner void RemoveDeadNode(SDNode *N, DAGUpdateListener *UpdateListener = 0); 837f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner 8380fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman /// RemoveDeadNodes - This method deletes the unreachable nodes in the 8390fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman /// given list, and any nodes that become unreachable as a result. 8400fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman void RemoveDeadNodes(SmallVectorImpl<SDNode *> &DeadNodes, 8410fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman DAGUpdateListener *UpdateListener = 0); 8420fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman 8436542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 84426005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 84526005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 84626005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// if you have two nodes with identical results, use the third otherwise. 8476542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 848f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// These methods all take an optional UpdateListener, which (if not null) is 849f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// informed about nodes that are deleted and modified due to recursive 850f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// changes in the dag. 851fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 8529ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// These functions only replace all existing uses. It's possible that as 8539ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// these replacements are being performed, CSE may cause the From node 8549ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// to be given new uses. These new uses of From are left in place, and 8559ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// not automatically transfered to To. 8569ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// 857475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesWith(SDValue From, SDValue Op, 858f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 859fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 860f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 861475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesWith(SDNode *From, const SDValue *To, 862f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 863fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 86480274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 865f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// uses of other values produced by From.Val alone. 866475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesOfValueWith(SDValue From, SDValue To, 867f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 86880274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 869e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// ReplaceAllUsesOfValuesWith - Like ReplaceAllUsesOfValueWith, but 870e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// for multiple values at once. This correctly handles the case where 871e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// there is an overlap between the From values and the To values. 872475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesOfValuesWith(const SDValue *From, const SDValue *To, 873e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman unsigned Num, 874e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman DAGUpdateListener *UpdateListener = 0); 875e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman 876f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// AssignTopologicalOrder - Topological-sort the AllNodes list and a 877f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// assign a unique node id for each node in the DAG based on their 878f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// topological order. Returns the number of nodes. 879f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman unsigned AssignTopologicalOrder(); 880e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng 8818be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// RepositionNode - Move node N in the AllNodes list to be immediately 8828be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// before the given iterator Position. This may be used to update the 8838be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// topological ordering when the list of nodes is modified. 8848be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman void RepositionNode(allnodes_iterator Position, SDNode *N) { 8858be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman AllNodes.insert(Position, AllNodes.remove(N)); 8868be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman } 8878be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman 8881efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// isCommutativeBinOp - Returns true if the opcode is a commutative binary 8891efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// operation. 8901efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng static bool isCommutativeBinOp(unsigned Opcode) { 8914ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // FIXME: This should get its info from the td file, so that we can include 8924ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // target info. 8931efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng switch (Opcode) { 8941efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADD: 8951efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MUL: 8961efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHU: 8971efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHS: 898b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::SMUL_LOHI: 899b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::UMUL_LOHI: 9001efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FADD: 9011efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FMUL: 9021efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::AND: 9031efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::OR: 9041efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::XOR: 9051efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDC: 9061efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDE: return true; 9071efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng default: return false; 9081efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 9091efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 9101efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng 911cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 912d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 91337ce9df0da6cddc3b8bfef9b63d33d058a0f2f15Chris Lattner /// CreateStackTemporary - Create a stack temporary, suitable for holding the 914364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang /// specified value type. If minAlign is specified, the slot size will have 915364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang /// at least that alignment. 916475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CreateStackTemporary(MVT VT, unsigned minAlign = 1); 91747d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 91847d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands /// CreateStackTemporary - Create a stack temporary suitable for holding 91947d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands /// either of the specified value types. 92047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands SDValue CreateStackTemporary(MVT VT1, MVT VT2); 92147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 922f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling /// FoldConstantArithmetic - 923f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling SDValue FoldConstantArithmetic(unsigned Opcode, 924f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling MVT VT, 925f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling ConstantSDNode *Cst1, 926f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling ConstantSDNode *Cst2); 927f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling 92851dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner /// FoldSetCC - Constant fold a setcc to true or false. 929475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FoldSetCC(MVT VT, SDValue N1, 930ff97d4fe81ef0dcee9fe490bed8ab08e40251905Dale Johannesen SDValue N2, ISD::CondCode Cond, DebugLoc dl); 93151dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner 9322e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// SignBitIsZero - Return true if the sign bit of Op is known to be zero. We 9332e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// use this predicate to simplify operations downstream. 934475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool SignBitIsZero(SDValue Op, unsigned Depth = 0) const; 9352e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman 936ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// MaskedValueIsZero - Return true if 'Op & Mask' is known to be zero. We 937ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// use this predicate to simplify operations downstream. Op and Mask are 938ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be the same type. 939475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool MaskedValueIsZero(SDValue Op, const APInt &Mask, unsigned Depth = 0) 940ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman const; 941ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 942ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeMaskedBits - Determine which of the bits specified in Mask are 943ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be either zero or one and return them in the KnownZero/KnownOne 944ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// bitsets. This code only analyzes bits in Mask, in order to short-circuit 945ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// processing. Targets can implement the computeMaskedBitsForTargetNode 946ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// method in the TargetLowering class to allow target nodes to be understood. 947475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ComputeMaskedBits(SDValue Op, const APInt &Mask, APInt &KnownZero, 948fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman APInt &KnownOne, unsigned Depth = 0) const; 949fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman 950ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeNumSignBits - Return the number of times the sign bit of the 951ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// register is replicated into the other bits. We know that at least 1 bit 952ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// is always equal to the sign bit (itself), but other cases can give us 953ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// information. For example, immediately after an "SRA X, 2", we know that 954ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// the top 3 bits are all equal to each other, so we return 3. Targets can 955ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// implement the ComputeNumSignBitsForTarget method in the TargetLowering 956ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// class to allow target nodes to be understood. 957475871a144eb604ddaf37503397ba0941442e5fbDan Gohman unsigned ComputeNumSignBits(SDValue Op, unsigned Depth = 0) const; 958a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng 959475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// isVerifiedDebugInfoDesc - Returns true if the specified SDValue has 960a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng /// been verified as a debug information descriptor. 961475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool isVerifiedDebugInfoDesc(SDValue Op) const; 96277f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng 96377f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// getShuffleScalarElt - Returns the scalar element that will make up the ith 96477f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// element of the result of the vector shuffle. 965475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getShuffleScalarElt(const SDNode *N, unsigned Idx); 966ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman 967d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 968095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman bool RemoveNodeFromCSEMaps(SDNode *N); 969399461095b033438d1f5863cd0d6f82a616f74dcDan Gohman void AddModifiedNodeToCSEMaps(SDNode *N, DAGUpdateListener *UpdateListener); 970475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, SDValue Op, void *&InsertPos); 971475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, SDValue Op1, SDValue Op2, 972a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 973475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, const SDValue *Ops, unsigned NumOps, 974a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 975b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 976fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 977c53361294957b63a9c1e405256c6f0a81db1685cDan Gohman void DeallocateNode(SDNode *N); 9789c6e70eca9a49c146b26621cbcbb9464ceeac024Dan Gohman 9799c6e70eca9a49c146b26621cbcbb9464ceeac024Dan Gohman unsigned getMVTAlignment(MVT MemoryVT) const; 980f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 981f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman void allnodes_clear(); 9827cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner 983101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// VTList - List of non-single value types. 984e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman std::vector<SDVTList> VTList; 985109654fae9c5b8b96bd3a829824cdbceb27ced06Chris Lattner 986101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// CondCodeNodes - Maps to auto-CSE operations. 9877cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 9881cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 98915e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 9908e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands std::map<MVT, SDNode*, MVT::compareRawBits> ExtendedValueTypeNodes; 991056292fd738924f3f7703725d8f630983794b5a5Bill Wendling StringMap<SDNode*> ExternalSymbols; 992056292fd738924f3f7703725d8f630983794b5a5Bill Wendling StringMap<SDNode*> TargetExternalSymbols; 993cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 994cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 9951080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 9961080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 9971080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 9981080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 9991080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 10001080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 10011080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 10021080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 10031080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 10041080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 1005b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 1006cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1007cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 1008