SelectionDAG.h revision 027657db7cf60bcbf40403496d7e4a170f9ce1ec
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" 204b84086e89d86fb16f562166d9fea8df37db6be7Dan Gohman#include "llvm/ADT/StringMap.h" 21583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey#include "llvm/CodeGen/SelectionDAGNodes.h" 22c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman#include "llvm/Support/RecyclingAllocator.h" 2398a366d547772010e94609e4584489b3e5ce0043Bill Wendling#include "llvm/Target/TargetMachine.h" 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; 32b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendlingclass MachineConstantPoolValue; 33b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendlingclass MachineFunction; 3431441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Chengclass MDNode; 35b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendlingclass SDNodeOrdering; 36bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesenclass SDDbgValue; 37b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendlingclass TargetLowering; 38ff7a562751604a9fe13efc75bd59622244b54d35Dan Gohmanclass TargetSelectionDAGInfo; 39fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman 408e4018e2de52c534405d7155c7009d0b35afb861Cedric Venettemplate<> struct ilist_traits<SDNode> : public ilist_default_traits<SDNode> { 418e4018e2de52c534405d7155c7009d0b35afb861Cedric Venetprivate: 427309be6735666143bd9835b275dc8501617a2591Gabor Greif mutable ilist_half_node<SDNode> Sentinel; 43fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanpublic: 44fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman SDNode *createSentinel() const { 45c7f6b8c5d40e17bf43fd3a1549d7d89c9da735e1Gabor Greif return static_cast<SDNode*>(&Sentinel); 46fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman } 47fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman static void destroySentinel(SDNode *) {} 48fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman 49c23b8719ef9d6b1220e854b37d40e9e1c48a82bcGabor Greif SDNode *provideInitialHead() const { return createSentinel(); } 50c23b8719ef9d6b1220e854b37d40e9e1c48a82bcGabor Greif SDNode *ensureHead(SDNode*) const { return createSentinel(); } 51f3841fcbd587c31aa9842b3f33bd57de40c9f443Gabor Greif static void noteHead(SDNode*, SDNode*) {} 52c23b8719ef9d6b1220e854b37d40e9e1c48a82bcGabor Greif 53fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman static void deleteNode(SDNode *) { 54fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman assert(0 && "ilist_traits<SDNode> shouldn't see a deleteNode call!"); 55fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman } 56fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanprivate: 57fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman static void createNode(const SDNode &); 58fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman}; 59c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 60bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen/// SDDbgInfo - Keeps track of dbg_value information through SDISel. We do 61bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen/// not build SDNodes for these so as not to perturb the generated code; 62bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng/// instead the info is kept off to the side in this structure. Each SDNode may 63bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng/// have one or more associated dbg_value entries. This information is kept in 64bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng/// DbgValMap. 65fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen/// Byval parameters are handled separately because they don't use alloca's, 66fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen/// which busts the normal mechanism. There is good reason for handling all 67fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen/// parameters separately: they may not have code generated for them, they 68fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen/// should always go at the beginning of the function regardless of other code 69fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen/// motion, and debug info for them is potentially useful even if the parameter 70fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen/// is unused. Right now only byval parameters are handled separately. 71bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesenclass SDDbgInfo { 72bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng SmallVector<SDDbgValue*, 32> DbgValues; 73fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen SmallVector<SDDbgValue*, 32> ByvalParmDbgValues; 74d4c6c3a7c3140ce487a805138b6f53f82ff6b783Devang Patel DenseMap<const SDNode*, SmallVector<SDDbgValue*, 2> > DbgValMap; 75bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 76bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen void operator=(const SDDbgInfo&); // Do not implement. 77bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen SDDbgInfo(const SDDbgInfo&); // Do not implement. 78bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesenpublic: 79bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen SDDbgInfo() {} 80bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 81fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen void add(SDDbgValue *V, const SDNode *Node, bool isParameter) { 82fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen if (isParameter) { 83fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen ByvalParmDbgValues.push_back(V); 84fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen } else DbgValues.push_back(V); 85bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng if (Node) 86d4c6c3a7c3140ce487a805138b6f53f82ff6b783Devang Patel DbgValMap[Node].push_back(V); 87bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen } 88bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng 89bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen void clear() { 90d4c6c3a7c3140ce487a805138b6f53f82ff6b783Devang Patel DbgValMap.clear(); 91bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng DbgValues.clear(); 92fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen ByvalParmDbgValues.clear(); 93bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng } 94bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng 95bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng bool empty() const { 96fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen return DbgValues.empty() && ByvalParmDbgValues.empty(); 97bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen } 98bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng 99bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng SmallVector<SDDbgValue*,2> &getSDDbgValues(const SDNode *Node) { 100d4c6c3a7c3140ce487a805138b6f53f82ff6b783Devang Patel return DbgValMap[Node]; 101bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen } 102bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng 103bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng typedef SmallVector<SDDbgValue*,32>::iterator DbgIterator; 104bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng DbgIterator DbgBegin() { return DbgValues.begin(); } 105bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng DbgIterator DbgEnd() { return DbgValues.end(); } 106fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen DbgIterator ByvalParmDbgBegin() { return ByvalParmDbgValues.begin(); } 107fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen DbgIterator ByvalParmDbgEnd() { return ByvalParmDbgValues.end(); } 108bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen}; 109bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 11025cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sandsenum CombineLevel { 11125cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands Unrestricted, // Combine may create illegal operations and illegal types. 11225cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands NoIllegalTypes, // Combine may create illegal operations but no illegal types. 11325cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands NoIllegalOperations // Combine may only create legal operations and types. 11425cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands}; 11525cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands 116cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greeneclass SelectionDAG; 117cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greenevoid checkForCycles(const SDNode *N); 118cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greenevoid checkForCycles(const SelectionDAG *DAG); 119cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene 120c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// SelectionDAG class - This is used to represent a portion of an LLVM function 121c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// in a low-level Data Dependence DAG representation suitable for instruction 122c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection. This DAG is constructed as the first step of instruction 123c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection in order to allow implementation of machine specific optimizations 124c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// and code simplifications. 125c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// 126c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// The representation used by the SelectionDAG is a target-independent 127c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// representation, which has some similarities to the GCC RTL representation, 128c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// but is significantly more simple, powerful, and is a graph form instead of a 129c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// linear form. 130cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner/// 131cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerclass SelectionDAG { 13250d2b1ac029d63500ea9b9347561b1454fa6ed6aDan Gohman const TargetMachine &TM; 133d858e90f039f5fcdc2fa93035e911a5a9505cc50Dan Gohman const TargetLowering &TLI; 134ff7a562751604a9fe13efc75bd59622244b54d35Dan Gohman const TargetSelectionDAGInfo &TSI; 1357c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman MachineFunction *MF; 136512063dd0f91a76b9dd904dfff72a52b4d09e89fChris Lattner LLVMContext *Context; 137cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 138f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// EntryNode - The starting token. 139f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman SDNode EntryNode; 140f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 141f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// Root - The root of the entire DAG. 142f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman SDValue Root; 143cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 144213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// AllNodes - A linked list of nodes in the current DAG. 145fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman ilist<SDNode> AllNodes; 146fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman 147f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// NodeAllocatorType - The AllocatorType for allocating SDNodes. We use 148f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// pool allocation with recycling. 149f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman typedef RecyclingAllocator<BumpPtrAllocator, SDNode, sizeof(LargestSDNode), 150f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman AlignOf<MostAlignedSDNode>::Alignment> 151f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman NodeAllocatorType; 152f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 153f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// NodeAllocator - Pool allocation for nodes. 154f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman NodeAllocatorType NodeAllocator; 155691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 156213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSEMap - This structure is used to memoize nodes, automatically performing 157d23b33435ae722ff5aa5ab97135a4f31041959e2Bob Wilson /// CSE with existing nodes when a duplicate is requested. 158583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey FoldingSet<SDNode> CSEMap; 159213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner 160f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// OperandAllocator - Pool allocation for machine-opcode SDNode operands. 161f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman BumpPtrAllocator OperandAllocator; 162f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 163e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// Allocator - Pool allocation for misc. objects that are created once per 164e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// SelectionDAG. 165e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman BumpPtrAllocator Allocator; 166e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman 167b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendling /// SDNodeOrdering - The ordering of the SDNodes. It roughly corresponds to 168b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendling /// the ordering of the original LLVM instructions. 169b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendling SDNodeOrdering *Ordering; 170819309efec6f11ba752bd7cbfe186495745f020bDaniel Dunbar 171bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen /// DbgInfo - Tracks dbg_value information through SDISel. 172bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen SDDbgInfo *DbgInfo; 173bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 174d038e04188047eca4749d025ef1f05f7ae660bcaDuncan Sands /// VerifyNode - Sanity check the given node. Aborts if it is invalid. 175d038e04188047eca4749d025ef1f05f7ae660bcaDuncan Sands void VerifyNode(SDNode *N); 176d038e04188047eca4749d025ef1f05f7ae660bcaDuncan Sands 177c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// setGraphColorHelper - Implementation of setSubgraphColor. 178c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// Return whether we had to truncate the search. 179c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// 180c23b8719ef9d6b1220e854b37d40e9e1c48a82bcGabor Greif bool setSubgraphColorHelper(SDNode *N, const char *Color, 181c23b8719ef9d6b1220e854b37d40e9e1c48a82bcGabor Greif DenseSet<SDNode *> &visited, 182c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene int level, bool &printed); 183c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene 184819309efec6f11ba752bd7cbfe186495745f020bDaniel Dunbar void operator=(const SelectionDAG&); // Do not implement. 185819309efec6f11ba752bd7cbfe186495745f020bDaniel Dunbar SelectionDAG(const SelectionDAG&); // Do not implement. 186819309efec6f11ba752bd7cbfe186495745f020bDaniel Dunbar 187cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerpublic: 1887451d3e09d26115195280ba36f686a0a90815089Dan Gohman explicit SelectionDAG(const TargetMachine &TM); 189cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner ~SelectionDAG(); 190cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1917c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// init - Prepare this SelectionDAG to process code in the given 1927c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// MachineFunction. 1937c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// 194de6e783b2490447866b592cd39855e6f4d25efffChris Lattner void init(MachineFunction &mf); 1957c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman 1967c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// clear - Clear state and free memory necessary to make this 197f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// SelectionDAG ready to process a new block. 198f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// 1997c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman void clear(); 200f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 2017c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman MachineFunction &getMachineFunction() const { return *MF; } 20250d2b1ac029d63500ea9b9347561b1454fa6ed6aDan Gohman const TargetMachine &getTarget() const { return TM; } 203d858e90f039f5fcdc2fa93035e911a5a9505cc50Dan Gohman const TargetLowering &getTargetLoweringInfo() const { return TLI; } 204ff7a562751604a9fe13efc75bd59622244b54d35Dan Gohman const TargetSelectionDAGInfo &getSelectionDAGInfo() const { return TSI; } 205d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson LLVMContext *getContext() const {return Context; } 206cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 207ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// viewGraph - Pop up a GraphViz/gv window with the DAG rendered using 'dot'. 2081080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner /// 209462dc7f4960e5074ddf4769ec8b2ef1ba7a4d2c8Dan Gohman void viewGraph(const std::string &Title); 2100b12aef49087b57d276ed760a83525d1e2602144Dan Gohman void viewGraph(); 211fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 212ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#ifndef NDEBUG 213ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey std::map<const SDNode *, std::string> NodeGraphAttrs; 214ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#endif 2151080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 216ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// clearGraphAttrs - Clear all previously defined node graph attributes. 217ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Intended to be used from a debugging tool (eg. gdb). 218ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void clearGraphAttrs(); 219fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 220ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".) 221ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 222ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphAttrs(const SDNode *N, const char *Attrs); 223fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 224ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".) 225ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Used from getNodeAttributes. 226ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey const std::string getGraphAttrs(const SDNode *N) const; 227fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 228ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphColor - Convenience for setting node color attribute. 229ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 230ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphColor(const SDNode *N, const char *Color); 2311080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 232c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// setGraphColor - Convenience for setting subgraph color attribute. 233c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// 234c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene void setSubgraphColor(SDNode *N, const char *Color); 235c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene 236fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman typedef ilist<SDNode>::const_iterator allnodes_const_iterator; 237b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); } 238b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_end() const { return AllNodes.end(); } 239fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman typedef ilist<SDNode>::iterator allnodes_iterator; 240b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_begin() { return AllNodes.begin(); } 241b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_end() { return AllNodes.end(); } 242fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman ilist<SDNode>::size_type allnodes_size() const { 2430e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman return AllNodes.size(); 2440e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman } 245fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 246c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getRoot - Return the root tag of the SelectionDAG. 247cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 248475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue &getRoot() const { return Root; } 249cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 250c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getEntryNode - Return the token chain corresponding to the entry of the 251c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// function. 252f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman SDValue getEntryNode() const { 253f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman return SDValue(const_cast<SDNode *>(&EntryNode), 0); 254f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman } 255cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 256c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// setRoot - Set the current root tag of the SelectionDAG. 257cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 258475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue &setRoot(SDValue N) { 259825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((!N.getNode() || N.getValueType() == MVT::Other) && 260acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman "DAG root value is not a chain!"); 261cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene if (N.getNode()) 262cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene checkForCycles(N.getNode()); 263cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene Root = N; 264cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene if (N.getNode()) 265cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene checkForCycles(this); 266cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene return Root; 267acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman } 268cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 2691d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// Combine - This iterates over the nodes in the SelectionDAG, folding 27025cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// certain types of nodes together, or eliminating superfluous nodes. The 27125cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// Level argument controls whether Combine is allowed to produce nodes and 27225cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// types that are illegal on the target. 27398a366d547772010e94609e4584489b3e5ce0043Bill Wendling void Combine(CombineLevel Level, AliasAnalysis &AA, 27498a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel); 27525cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands 27601d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// LegalizeTypes - This transforms the SelectionDAG into a SelectionDAG that 27725cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// only uses types natively supported by the target. Returns "true" if it 27825cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// made any changes. 27901d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// 28001d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// Note that this is an involved process that may invalidate pointers into 28101d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// the graph. 28225cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands bool LegalizeTypes(); 28325cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands 284c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Legalize - This transforms the SelectionDAG into a SelectionDAG that is 285c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// compatible with the target instruction selector, as indicated by the 286c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// TargetLowering object. 287cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 288c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Note that this is an involved process that may invalidate pointers into 289c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// the graph. 290714efc63d4319b771d89a95aa7a42d400f03d8c9Dan Gohman void Legalize(CodeGenOpt::Level OptLevel); 291c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 2925c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// LegalizeVectors - This transforms the SelectionDAG into a SelectionDAG 2935c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// that only uses vector math operations supported by the target. This is 2945c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// necessary as a separate step from Legalize because unrolling a vector 2955c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// operation can introduce illegal types, which requires running 2965c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// LegalizeTypes again. 2975c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// 2985c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// This returns true if it made any changes; in that case, LegalizeTypes 2995c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// is called again before Legalize. 3005c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// 3015c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// Note that this is an involved process that may invalidate pointers into 3025c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// the graph. 3035c22c8074404797f1313b1334757254fb5c6487aEli Friedman bool LegalizeVectors(); 3045c22c8074404797f1313b1334757254fb5c6487aEli Friedman 305d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// RemoveDeadNodes - This method deletes all unreachable nodes in the 306190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner /// SelectionDAG. 307190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner void RemoveDeadNodes(); 308130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 309130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// DeleteNode - Remove the specified node from the system. This node must 310130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// have no referrers. 311130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng void DeleteNode(SDNode *N); 312130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 31370046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getVTList - Return an SDVTList that represents the list of values 31470046e920fa37989a041af663ada2b2b646e258fChris Lattner /// specified. 315e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDVTList getVTList(EVT VT); 316e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDVTList getVTList(EVT VT1, EVT VT2); 317e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDVTList getVTList(EVT VT1, EVT VT2, EVT VT3); 318e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDVTList getVTList(EVT VT1, EVT VT2, EVT VT3, EVT VT4); 319e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDVTList getVTList(const EVT *VTs, unsigned NumVTs); 320fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3211b1a49714ef26225a42199cf2930529f31868322Chris Lattner //===--------------------------------------------------------------------===// 32270046e920fa37989a041af663ada2b2b646e258fChris Lattner // Node creation methods. 32370046e920fa37989a041af663ada2b2b646e258fChris Lattner // 324e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstant(uint64_t Val, EVT VT, bool isTarget = false); 325e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstant(const APInt &Val, EVT VT, bool isTarget = false); 326e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstant(const ConstantInt &Val, EVT VT, bool isTarget = false); 327475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getIntPtrConstant(uint64_t Val, bool isTarget = false); 328e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstant(uint64_t Val, EVT VT) { 329cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getConstant(Val, VT, true); 330cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 331e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstant(const APInt &Val, EVT VT) { 3326394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman return getConstant(Val, VT, true); 3336394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman } 334e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstant(const ConstantInt &Val, EVT VT) { 3354fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman return getConstant(Val, VT, true); 3364fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman } 3370a406ae0d940d92c51ee145b48ff7a483a366849Dale Johannesen // The forms below that take a double should only be used for simple 3380a406ae0d940d92c51ee145b48ff7a483a366849Dale Johannesen // constants that can be exactly represented in VT. No checks are made. 339e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstantFP(double Val, EVT VT, bool isTarget = false); 340e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstantFP(const APFloat& Val, EVT VT, bool isTarget = false); 341e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstantFP(const ConstantFP &CF, EVT VT, bool isTarget = false); 342e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstantFP(double Val, EVT VT) { 343c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantFP(Val, VT, true); 344c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 345e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstantFP(const APFloat& Val, EVT VT) { 346f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen return getConstantFP(Val, VT, true); 347f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen } 348e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstantFP(const ConstantFP &Val, EVT VT) { 3494fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman return getConstantFP(Val, VT, true); 3504fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman } 351e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getGlobalAddress(const GlobalValue *GV, EVT VT, 3522a4ed82ce2ba4a02f2a02eb4ed8ce5186f3f93daChris Lattner int64_t offset = 0, bool isTargetGA = false, 3532a4ed82ce2ba4a02f2a02eb4ed8ce5186f3f93daChris Lattner unsigned char TargetFlags = 0); 354e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetGlobalAddress(const GlobalValue *GV, EVT VT, 3552a4ed82ce2ba4a02f2a02eb4ed8ce5186f3f93daChris Lattner int64_t offset = 0, 3562a4ed82ce2ba4a02f2a02eb4ed8ce5186f3f93daChris Lattner unsigned char TargetFlags = 0) { 3572a4ed82ce2ba4a02f2a02eb4ed8ce5186f3f93daChris Lattner return getGlobalAddress(GV, VT, offset, true, TargetFlags); 358cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 359e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getFrameIndex(int FI, EVT VT, bool isTarget = false); 360e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetFrameIndex(int FI, EVT VT) { 361c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getFrameIndex(FI, VT, true); 362c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 363e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getJumpTable(int JTI, EVT VT, bool isTarget = false, 364f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned char TargetFlags = 0); 365e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetJumpTable(int JTI, EVT VT, unsigned char TargetFlags = 0) { 366f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner return getJumpTable(JTI, VT, true, TargetFlags); 367c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 36846510a73e977273ec67747eb34cbdb43f815e451Dan Gohman SDValue getConstantPool(const Constant *C, EVT VT, 369f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned Align = 0, int Offs = 0, bool isT=false, 370f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned char TargetFlags = 0); 37146510a73e977273ec67747eb34cbdb43f815e451Dan Gohman SDValue getTargetConstantPool(const Constant *C, EVT VT, 372f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned Align = 0, int Offset = 0, 373f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned char TargetFlags = 0) { 374f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner return getConstantPool(C, VT, Align, Offset, true, TargetFlags); 375c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 376e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstantPool(MachineConstantPoolValue *C, EVT VT, 377f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned Align = 0, int Offs = 0, bool isT=false, 378f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned char TargetFlags = 0); 379475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstantPool(MachineConstantPoolValue *C, 380e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT, unsigned Align = 0, 381f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner int Offset = 0, unsigned char TargetFlags=0) { 382f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner return getConstantPool(C, VT, Align, Offset, true, TargetFlags); 383d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng } 3848ad9b43e690e8773cf836b30e8da26bc71e18844Dale Johannesen // When generating a branch to a BB, we don't in general know enough 3858ad9b43e690e8773cf836b30e8da26bc71e18844Dale Johannesen // to provide debug info for the BB at that time, so keep this one around. 386475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getBasicBlock(MachineBasicBlock *MBB); 387e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getBasicBlock(MachineBasicBlock *MBB, DebugLoc dl); 388e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getExternalSymbol(const char *Sym, EVT VT); 389e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getExternalSymbol(const char *Sym, DebugLoc dl, EVT VT); 390e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetExternalSymbol(const char *Sym, EVT VT, 3911af2231da64a14d638406d133c7912bfc1c8a9ceChris Lattner unsigned char TargetFlags = 0); 392e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getValueType(EVT); 393e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getRegister(unsigned Reg, EVT VT); 3947561d480953e0a2faa4af9be0a00b1180097c4bdChris Lattner SDValue getEHLabel(DebugLoc dl, SDValue Root, MCSymbol *Label); 39546510a73e977273ec67747eb34cbdb43f815e451Dan Gohman SDValue getBlockAddress(const BlockAddress *BA, EVT VT, 39629cbade25aa094ca9a149a96a8614cf6f3247480Dan Gohman bool isTarget = false, unsigned char TargetFlags = 0); 397c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 3980f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyToReg(SDValue Chain, DebugLoc dl, unsigned Reg, SDValue N) { 399825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return getNode(ISD::CopyToReg, dl, MVT::Other, Chain, 4000f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen getRegister(Reg, N.getValueType()), N); 4010f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 402cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 403e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 404e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 405e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 4060f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyToReg(SDValue Chain, DebugLoc dl, unsigned Reg, SDValue N, 407be1be5ef0d5a2bb52746b6bd69d4b1e88513c81aEvan Cheng SDValue Flag) { 408825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList VTs = getVTList(MVT::Other, MVT::Flag); 4090f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Flag }; 410fc1665793e62eb4f26d24b8a19eecf59cd872e2aDan Gohman return getNode(ISD::CopyToReg, dl, VTs, Ops, Flag.getNode() ? 4 : 3); 4110f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 41266a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 413475871a144eb604ddaf37503397ba0941442e5fbDan Gohman // Similar to last getCopyToReg() except parameter Reg is a SDValue 4140f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyToReg(SDValue Chain, DebugLoc dl, SDValue Reg, SDValue N, 4150f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Flag) { 416825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList VTs = getVTList(MVT::Other, MVT::Flag); 4170f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Ops[] = { Chain, Reg, N, Flag }; 418fc1665793e62eb4f26d24b8a19eecf59cd872e2aDan Gohman return getNode(ISD::CopyToReg, dl, VTs, Ops, Flag.getNode() ? 4 : 3); 4190f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 420fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 421e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getCopyFromReg(SDValue Chain, DebugLoc dl, unsigned Reg, EVT VT) { 422825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList VTs = getVTList(VT, MVT::Other); 4230f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Ops[] = { Chain, getRegister(Reg, VT) }; 424fc1665793e62eb4f26d24b8a19eecf59cd872e2aDan Gohman return getNode(ISD::CopyFromReg, dl, VTs, Ops, 2); 4250f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 426fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 427e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 428e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // indicates that there is potentially an incoming flag value (if Flag is not 429e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // null) and that there should be a flag result. 430e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getCopyFromReg(SDValue Chain, DebugLoc dl, unsigned Reg, EVT VT, 4310f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Flag) { 432825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList VTs = getVTList(VT, MVT::Other, MVT::Flag); 4330f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Ops[] = { Chain, getRegister(Reg, VT), Flag }; 434fc1665793e62eb4f26d24b8a19eecf59cd872e2aDan Gohman return getNode(ISD::CopyFromReg, dl, VTs, Ops, Flag.getNode() ? 3 : 2); 4350f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 43618c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 437475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCondCode(ISD::CondCode Cond); 438cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 43977cdf30742284a173fe818417eb482224cdee8d4Mon P Wang /// Returns the ConvertRndSat Note: Avoid using this node because it may 44077cdf30742284a173fe818417eb482224cdee8d4Mon P Wang /// disappear in the future and most targets don't support it. 441e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConvertRndSat(EVT VT, DebugLoc dl, SDValue Val, SDValue DTy, 4420f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue STy, 4430f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Rnd, SDValue Sat, ISD::CvtCode Code); 4449008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 4459008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman /// getVectorShuffle - Return an ISD::VECTOR_SHUFFLE node. The number of 4469008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman /// elements in VT, which must be a vector type, must match the number of 4475a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// mask elements NumElts. A integer mask element equal to -1 is treated as 4489008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman /// undefined. 449e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getVectorShuffle(EVT VT, DebugLoc dl, SDValue N1, SDValue N2, 4509008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman const int *MaskElts); 45177cdf30742284a173fe818417eb482224cdee8d4Mon P Wang 4523a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands /// getSExtOrTrunc - Convert Op, which must be of integer type, to the 4533a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands /// integer type VT, by either sign-extending or truncating it. 4543a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands SDValue getSExtOrTrunc(SDValue Op, DebugLoc DL, EVT VT); 4553a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands 4563a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands /// getZExtOrTrunc - Convert Op, which must be of integer type, to the 4573a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands /// integer type VT, by either zero-extending or truncating it. 4583a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands SDValue getZExtOrTrunc(SDValue Op, DebugLoc DL, EVT VT); 4593a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands 4601ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 4611ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 462e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getZeroExtendInReg(SDValue Op, DebugLoc DL, EVT SrcTy); 463fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 4644c2454623841f05c6c665659b34c214950d12d7eBob Wilson /// getNOT - Create a bitwise NOT operation as (XOR Val, -1). 465e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNOT(DebugLoc DL, SDValue Val, EVT VT); 4664c2454623841f05c6c665659b34c214950d12d7eBob Wilson 4676a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 468e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen /// a flag result (to ensure it's not CSE'd). CALLSEQ_START does not have a 469e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen /// useful DebugLoc. 470475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCALLSEQ_START(SDValue Chain, SDValue Op) { 471825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList VTs = getVTList(MVT::Other, MVT::Flag); 472475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, Op }; 473b494ccf02ce17318d3f2a7b2d674bec60781fc73Chris Lattner return getNode(ISD::CALLSEQ_START, DebugLoc(), VTs, Ops, 2); 4746a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 4751ccae666f596d5aeca5c9942995763600b622062Chris Lattner 4760f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// getCALLSEQ_END - Return a new CALLSEQ_END node, which always must have a 477e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen /// flag result (to ensure it's not CSE'd). CALLSEQ_END does not have 478e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen /// a useful DebugLoc. 479475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCALLSEQ_END(SDValue Chain, SDValue Op1, SDValue Op2, 480475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InFlag) { 481825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList NodeTys = getVTList(MVT::Other, MVT::Flag); 482475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 4> Ops; 4830f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Chain); 4840f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op1); 4850f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op2); 4860f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(InFlag); 487b494ccf02ce17318d3f2a7b2d674bec60781fc73Chris Lattner return getNode(ISD::CALLSEQ_END, DebugLoc(), NodeTys, &Ops[0], 488ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif (unsigned)Ops.size() - (InFlag.getNode() == 0 ? 1 : 0)); 4890f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling } 4900f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling 491e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen /// getUNDEF - Return an UNDEF node. UNDEF does not have a useful DebugLoc. 492e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getUNDEF(EVT VT) { 493b494ccf02ce17318d3f2a7b2d674bec60781fc73Chris Lattner return getNode(ISD::UNDEF, DebugLoc(), VT); 494e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen } 495e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen 496b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen /// getGLOBAL_OFFSET_TABLE - Return a GLOBAL_OFFSET_TABLE node. This does 497b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen /// not have a useful DebugLoc. 498e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getGLOBAL_OFFSET_TABLE(EVT VT) { 499b494ccf02ce17318d3f2a7b2d674bec60781fc73Chris Lattner return getNode(ISD::GLOBAL_OFFSET_TABLE, DebugLoc(), VT); 500b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen } 501b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen 502c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 503cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 504e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT); 505e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, SDValue N); 506e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, SDValue N1, SDValue N2); 507e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, 5087ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3); 509e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, 5107ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4); 511e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, 5127ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4, 5137ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N5); 514e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, 5157ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDUse *Ops, unsigned NumOps); 516e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, 5177ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 5187ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, 519e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson const std::vector<EVT> &ResultTys, 5207ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 521e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, const EVT *VTs, unsigned NumVTs, 5227ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 5237ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 5247ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 5257ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs); 5267ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, SDValue N); 5277ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 5287ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2); 5297ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 5307ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3); 5317ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 5327ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4); 5337ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 5347ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4, 5357ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N5); 536475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 53798ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /// getStackArgumentTokenFactor - Compute a TokenFactor to force all 53898ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /// the incoming stack arguments to be loaded from the stack. This is 53998ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /// used in tail call lowering to protect stack arguments from being 54098ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /// clobbered. 54198ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman SDValue getStackArgumentTokenFactor(SDValue Chain); 54298ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 5430f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getMemcpy(SDValue Chain, DebugLoc dl, SDValue Dst, SDValue Src, 54420adc9dc4650313f017b27d9818eb2176238113dMon P Wang SDValue Size, unsigned Align, bool isVol, bool AlwaysInline, 5450f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen const Value *DstSV, uint64_t DstSVOff, 54601f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *SrcSV, uint64_t SrcSVOff); 5475c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 5480f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getMemmove(SDValue Chain, DebugLoc dl, SDValue Dst, SDValue Src, 54920adc9dc4650313f017b27d9818eb2176238113dMon P Wang SDValue Size, unsigned Align, bool isVol, 5500f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen const Value *DstSV, uint64_t DstOSVff, 55101f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *SrcSV, uint64_t SrcSVOff); 5525c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 5530f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getMemset(SDValue Chain, DebugLoc dl, SDValue Dst, SDValue Src, 55420adc9dc4650313f017b27d9818eb2176238113dMon P Wang SDValue Size, unsigned Align, bool isVol, 55501f63cdb0433fd2e4b76538ee58ee89c26349564Evan Cheng const Value *DstSV, uint64_t DstSVOff); 5565c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 5577cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 558475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// have an ISD::CondCode instead of an SDValue. 5597cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 560e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getSetCC(DebugLoc DL, EVT VT, SDValue LHS, SDValue RHS, 561d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling ISD::CondCode Cond) { 562d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::SETCC, DL, VT, LHS, RHS, getCondCode(Cond)); 563b43e9c196542acc80c9e4643809661065710848fNate Begeman } 564b43e9c196542acc80c9e4643809661065710848fNate Begeman 565b43e9c196542acc80c9e4643809661065710848fNate Begeman /// getVSetCC - Helper function to make it easier to build VSetCC's nodes 566475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// if you just have an ISD::CondCode instead of an SDValue. 567b43e9c196542acc80c9e4643809661065710848fNate Begeman /// 568e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getVSetCC(DebugLoc DL, EVT VT, SDValue LHS, SDValue RHS, 569d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling ISD::CondCode Cond) { 570d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::VSETCC, DL, VT, LHS, RHS, getCondCode(Cond)); 5717cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 5729373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 5739373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 574475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// just have an ISD::CondCode instead of an SDValue. 5759373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 576d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling SDValue getSelectCC(DebugLoc DL, SDValue LHS, SDValue RHS, 577d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling SDValue True, SDValue False, ISD::CondCode Cond) { 578d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::SELECT_CC, DL, True.getValueType(), 579d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling LHS, RHS, True, False, getCondCode(Cond)); 5809373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 581fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 582acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 583acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 584e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getVAArg(EVT VT, DebugLoc dl, SDValue Chain, SDValue Ptr, 5850f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue SV); 5867cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 587fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// getAtomic - Gets a node for an atomic op, produces result and chain and 588c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// takes 3 operands 589e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT, SDValue Chain, 590e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Ptr, SDValue Cmp, SDValue Swp, const Value* PtrVal, 591e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Alignment=0); 592c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT, SDValue Chain, 593c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue Ptr, SDValue Cmp, SDValue Swp, 594c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MachineMemOperand *MMO); 595ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 596c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// getAtomic - Gets a node for an atomic op, produces result and chain and 597c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// takes 2 operands. 598e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT, SDValue Chain, 599e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Ptr, SDValue Val, const Value* PtrVal, 600e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Alignment = 0); 601c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT, SDValue Chain, 602c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue Ptr, SDValue Val, 603c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MachineMemOperand *MMO); 604ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 605c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// getMemIntrinsicNode - Creates a MemIntrinsicNode that may produce a 606c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// result and takes a list of operands. Opcode may be INTRINSIC_VOID, 607c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// INTRINSIC_W_CHAIN, or a target-specific opcode with a value not 608c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// less than FIRST_TARGET_MEMORY_OPCODE. 609e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getMemIntrinsicNode(unsigned Opcode, DebugLoc dl, 610e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson const EVT *VTs, unsigned NumVTs, 611e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const SDValue *Ops, unsigned NumOps, 612e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT MemVT, const Value *srcValue, int SVOff, 613e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Align = 0, bool Vol = false, 614e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen bool ReadMem = true, bool WriteMem = true); 615c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang 616e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getMemIntrinsicNode(unsigned Opcode, DebugLoc dl, SDVTList VTList, 617e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const SDValue *Ops, unsigned NumOps, 618e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT MemVT, const Value *srcValue, int SVOff, 619e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Align = 0, bool Vol = false, 620e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen bool ReadMem = true, bool WriteMem = true); 621c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang 622c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue getMemIntrinsicNode(unsigned Opcode, DebugLoc dl, SDVTList VTList, 623c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman const SDValue *Ops, unsigned NumOps, 624c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman EVT MemVT, MachineMemOperand *MMO); 625c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 6264bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands /// getMergeValues - Create a MERGE_VALUES node from the given operands. 62754c94525f420cab274af60e98a77f081f96e59c2Dale Johannesen SDValue getMergeValues(const SDValue *Ops, unsigned NumOps, DebugLoc dl); 628f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands 629c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 630c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 631cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 632e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getLoad(EVT VT, DebugLoc dl, SDValue Chain, SDValue Ptr, 6331e559443a17d1b335f697551c6263ba60d5dd827David Greene const Value *SV, int SVOffset, bool isVolatile, 6341e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal, unsigned Alignment); 635e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getExtLoad(ISD::LoadExtType ExtType, DebugLoc dl, EVT VT, 6361e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue Chain, SDValue Ptr, const Value *SV, 6371e559443a17d1b335f697551c6263ba60d5dd827David Greene int SVOffset, EVT MemVT, bool isVolatile, 6381e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal, unsigned Alignment); 639e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getIndexedLoad(SDValue OrigLoad, DebugLoc dl, SDValue Base, 640e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Offset, ISD::MemIndexedMode AM); 641e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getLoad(ISD::MemIndexedMode AM, DebugLoc dl, ISD::LoadExtType ExtType, 642e6798372ea38e5ea24c26282a0d69aa6e3829854Nate Begeman EVT VT, SDValue Chain, SDValue Ptr, SDValue Offset, 6438a55ce4a392f07ac1f3c183100ac591b7ad7c693Dan Gohman const Value *SV, int SVOffset, EVT MemVT, 6441e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isVolatile, bool isNonTemporal, unsigned Alignment); 645c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue getLoad(ISD::MemIndexedMode AM, DebugLoc dl, ISD::LoadExtType ExtType, 646c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman EVT VT, SDValue Chain, SDValue Ptr, SDValue Offset, 647c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman EVT MemVT, MachineMemOperand *MMO); 6482d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 649ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// getStore - Helper function to build ISD::STORE nodes. 650ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// 651e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr, 6521e559443a17d1b335f697551c6263ba60d5dd827David Greene const Value *SV, int SVOffset, bool isVolatile, 6531e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal, unsigned Alignment); 654c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue getStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr, 655c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MachineMemOperand *MMO); 656e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getTruncStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr, 6571e559443a17d1b335f697551c6263ba60d5dd827David Greene const Value *SV, int SVOffset, EVT TVT, 6581e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal, bool isVolatile, 6591e559443a17d1b335f697551c6263ba60d5dd827David Greene unsigned Alignment); 660c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue getTruncStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr, 661c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman EVT TVT, MachineMemOperand *MMO); 662e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getIndexedStore(SDValue OrigStoe, DebugLoc dl, SDValue Base, 663e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Offset, ISD::MemIndexedMode AM); 664ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng 665101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// getSrcValue - Construct a node to track a Value* through the backend. 666475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSrcValue(const Value *v); 66769de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 668decc2671516e6c52ee2f29f7746f8d02753845eaChris Lattner /// getMDNode - Return an MDNodeSDNode which holds an MDNode. 669decc2671516e6c52ee2f29f7746f8d02753845eaChris Lattner SDValue getMDNode(const MDNode *MD); 670decc2671516e6c52ee2f29f7746f8d02753845eaChris Lattner 67192abc62399881ba9c525be80362c134ad836e2d9Duncan Sands /// getShiftAmountOperand - Return the specified value casted to 67292abc62399881ba9c525be80362c134ad836e2d9Duncan Sands /// the target's desired shift amount type. 67392abc62399881ba9c525be80362c134ad836e2d9Duncan Sands SDValue getShiftAmountOperand(SDValue Op); 67492abc62399881ba9c525be80362c134ad836e2d9Duncan Sands 675b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 676b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 677b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 678b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 679b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 680b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 681027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, SDValue Op); 682027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2); 683027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2, 684475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3); 685027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2, 686475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3, SDValue Op4); 687027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2, 688475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3, SDValue Op4, SDValue Op5); 689027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, 690475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 691fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6921b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 6931b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 6941b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 695e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// ~TargetOpcode in the node opcode field. The resultant node is returned. 696e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT); 697e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT, SDValue Op1); 698e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT, 699475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 700e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT, 701475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 702e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT, 703475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 704e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, EVT VT2); 705e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 706e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, const SDValue *Ops, unsigned NumOps); 707e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 708e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, EVT VT3, const SDValue *Ops, unsigned NumOps); 709e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned MachineOpc, EVT VT1, 710e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, EVT VT3, EVT VT4, const SDValue *Ops, 71113d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling unsigned NumOps); 712e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 713e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, SDValue Op1); 714e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 715e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, SDValue Op1, SDValue Op2); 716e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 717e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 718e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 719e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, EVT VT3, SDValue Op1, SDValue Op2, SDValue Op3); 720cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, SDVTList VTs, 721475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 722694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng 723df51247725143acb781c224faffd848cc7cf95d8Chris Lattner /// MorphNodeTo - This *mutates* the specified node to have the specified 724e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// return type, opcode, and operands. 725e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, SDVTList VTs, 726475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 727753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 728602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman /// getMachineNode - These are used for target selectors to create a new node 729602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman /// with specified return type(s), MachineInstr opcode, and operands. 7306ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 731602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman /// Note that getMachineNode returns the resultant node. If there is already 732602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman /// a node of the specified opcode and operands, it returns that node instead 733602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman /// of the current one. 734c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT); 735c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT, 736c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman SDValue Op1); 737c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT, 738c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman SDValue Op1, SDValue Op2); 739c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT, 740602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 741c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT, 742602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman const SDValue *Ops, unsigned NumOps); 743c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2); 744c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 745602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman SDValue Op1); 746c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, 747602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT2, SDValue Op1, SDValue Op2); 748c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, 749602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 750c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 751602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman const SDValue *Ops, unsigned NumOps); 752c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 753602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT3, SDValue Op1, SDValue Op2); 754c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 755602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT3, SDValue Op1, SDValue Op2, SDValue Op3); 756c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 757602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT3, const SDValue *Ops, unsigned NumOps); 758c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 759602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT3, EVT VT4, const SDValue *Ops, unsigned NumOps); 760c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, 761c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman const std::vector<EVT> &ResultTys, const SDValue *Ops, 762c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman unsigned NumOps); 763c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, SDVTList VTs, 764c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman const SDValue *Ops, unsigned NumOps); 76508b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng 7666a402dc952ccad3f8fd0d9e272dbdd261f50854eDan Gohman /// getTargetExtractSubreg - A convenience function for creating 7676a402dc952ccad3f8fd0d9e272dbdd261f50854eDan Gohman /// TargetInstrInfo::EXTRACT_SUBREG nodes. 7686a402dc952ccad3f8fd0d9e272dbdd261f50854eDan Gohman SDValue getTargetExtractSubreg(int SRIdx, DebugLoc DL, EVT VT, 7696a402dc952ccad3f8fd0d9e272dbdd261f50854eDan Gohman SDValue Operand); 7706a402dc952ccad3f8fd0d9e272dbdd261f50854eDan Gohman 7715fcbf0d26ecb99d54c182f542bf8db43ff048d6dBob Wilson /// getTargetInsertSubreg - A convenience function for creating 7725fcbf0d26ecb99d54c182f542bf8db43ff048d6dBob Wilson /// TargetInstrInfo::INSERT_SUBREG nodes. 7735fcbf0d26ecb99d54c182f542bf8db43ff048d6dBob Wilson SDValue getTargetInsertSubreg(int SRIdx, DebugLoc DL, EVT VT, 7745fcbf0d26ecb99d54c182f542bf8db43ff048d6dBob Wilson SDValue Operand, SDValue Subreg); 7755fcbf0d26ecb99d54c182f542bf8db43ff048d6dBob Wilson 77608b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// getNodeIfExists - Get the specified node if it's already available, or 77708b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// else return NULL. 77808b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng SDNode *getNodeIfExists(unsigned Opcode, SDVTList VTs, 779475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 780fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 78131441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng /// getDbgValue - Creates a SDDbgValue node. 78231441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng /// 78331441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng SDDbgValue *getDbgValue(MDNode *MDPtr, SDNode *N, unsigned R, uint64_t Off, 78431441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng DebugLoc DL, unsigned O); 78546510a73e977273ec67747eb34cbdb43f815e451Dan Gohman SDDbgValue *getDbgValue(MDNode *MDPtr, const Value *C, uint64_t Off, 78631441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng DebugLoc DL, unsigned O); 78731441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng SDDbgValue *getDbgValue(MDNode *MDPtr, unsigned FI, uint64_t Off, 78831441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng DebugLoc DL, unsigned O); 78931441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng 790f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// DAGUpdateListener - Clients of various APIs that cause global effects on 791f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// the DAG can optionally implement this interface. This allows the clients 792f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// to handle the various sorts of updates that happen. 793f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner class DAGUpdateListener { 794f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner public: 795f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual ~DAGUpdateListener(); 796edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 797edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeDeleted - The node N that was deleted and, if E is not null, an 798edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// equivalent node E that replaced it. 799edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands virtual void NodeDeleted(SDNode *N, SDNode *E) = 0; 800edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 801edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeUpdated - The node N that was updated. 802f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual void NodeUpdated(SDNode *N) = 0; 803f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner }; 804fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 805f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// RemoveDeadNode - Remove the specified node from the system. If any of its 806f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// operands then becomes dead, remove them as well. Inform UpdateListener 807f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// for each node deleted. 808f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner void RemoveDeadNode(SDNode *N, DAGUpdateListener *UpdateListener = 0); 809fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 8100fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman /// RemoveDeadNodes - This method deletes the unreachable nodes in the 8110fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman /// given list, and any nodes that become unreachable as a result. 8120fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman void RemoveDeadNodes(SmallVectorImpl<SDNode *> &DeadNodes, 8130fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman DAGUpdateListener *UpdateListener = 0); 8140fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman 8156542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 81626005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 81726005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 818c23e4968790395053f3f52aeb3342637fcaafdbfDan Gohman /// if you have two nodes with identical results (or if 'To' has a superset 819c23e4968790395053f3f52aeb3342637fcaafdbfDan Gohman /// of the results of 'From'), use the third otherwise. 8206542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 821fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// These methods all take an optional UpdateListener, which (if not null) is 822f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// informed about nodes that are deleted and modified due to recursive 823f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// changes in the dag. 824fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 8259ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// These functions only replace all existing uses. It's possible that as 8269ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// these replacements are being performed, CSE may cause the From node 8279ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// to be given new uses. These new uses of From are left in place, and 8289ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// not automatically transfered to To. 8299ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// 830475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesWith(SDValue From, SDValue Op, 831f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 832fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 833f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 834475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesWith(SDNode *From, const SDValue *To, 835f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 836fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 83780274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 838f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// uses of other values produced by From.Val alone. 839475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesOfValueWith(SDValue From, SDValue To, 840f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 84180274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 842e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// ReplaceAllUsesOfValuesWith - Like ReplaceAllUsesOfValueWith, but 843e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// for multiple values at once. This correctly handles the case where 844e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// there is an overlap between the From values and the To values. 845475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesOfValuesWith(const SDValue *From, const SDValue *To, 846e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman unsigned Num, 847e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman DAGUpdateListener *UpdateListener = 0); 848e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman 849f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// AssignTopologicalOrder - Topological-sort the AllNodes list and a 850f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// assign a unique node id for each node in the DAG based on their 851f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// topological order. Returns the number of nodes. 852f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman unsigned AssignTopologicalOrder(); 853e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng 8548be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// RepositionNode - Move node N in the AllNodes list to be immediately 8558be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// before the given iterator Position. This may be used to update the 8568be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// topological ordering when the list of nodes is modified. 8578be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman void RepositionNode(allnodes_iterator Position, SDNode *N) { 8588be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman AllNodes.insert(Position, AllNodes.remove(N)); 8598be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman } 8608be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman 8611efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// isCommutativeBinOp - Returns true if the opcode is a commutative binary 8621efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// operation. 8631efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng static bool isCommutativeBinOp(unsigned Opcode) { 8644ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // FIXME: This should get its info from the td file, so that we can include 8654ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // target info. 8661efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng switch (Opcode) { 8671efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADD: 8681efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MUL: 8691efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHU: 8701efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHS: 871b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::SMUL_LOHI: 872b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::UMUL_LOHI: 8731efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FADD: 8741efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FMUL: 8751efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::AND: 8761efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::OR: 8771efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::XOR: 87856e04a80b3cbd348aaf8f1828ed28fb4a9de2312Dan Gohman case ISD::SADDO: 87956e04a80b3cbd348aaf8f1828ed28fb4a9de2312Dan Gohman case ISD::UADDO: 880fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel case ISD::ADDC: 8811efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDE: return true; 8821efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng default: return false; 8831efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 8841efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 8851efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng 886b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendling /// AssignOrdering - Assign an order to the SDNode. 8874533cac557cdcc13e7c990942758ec8338d9172aBill Wendling void AssignOrdering(const SDNode *SD, unsigned Order); 888b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendling 8890777e927214c61c5d681e5b7dd5d00665c81133aBill Wendling /// GetOrdering - Get the order for the SDNode. 8900777e927214c61c5d681e5b7dd5d00665c81133aBill Wendling unsigned GetOrdering(const SDNode *SD) const; 8910777e927214c61c5d681e5b7dd5d00665c81133aBill Wendling 892bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng /// AddDbgValue - Add a dbg_value SDNode. If SD is non-null that means the 893bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng /// value is produced by SD. 894fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen void AddDbgValue(SDDbgValue *DB, SDNode *SD, bool isParameter); 895bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 896bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng /// GetDbgValues - Get the debug values which reference the given SDNode. 897bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng SmallVector<SDDbgValue*,2> &GetDbgValues(const SDNode* SD) { 898bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng return DbgInfo->getSDDbgValues(SD); 899bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng } 900bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 901bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng /// hasDebugValues - Return true if there are any SDDbgValue nodes associated 902bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng /// with this SelectionDAG. 903bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng bool hasDebugValues() const { return !DbgInfo->empty(); } 904bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 905bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng SDDbgInfo::DbgIterator DbgBegin() { return DbgInfo->DbgBegin(); } 906bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng SDDbgInfo::DbgIterator DbgEnd() { return DbgInfo->DbgEnd(); } 907fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen SDDbgInfo::DbgIterator ByvalParmDbgBegin() { 908fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen return DbgInfo->ByvalParmDbgBegin(); 909fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen } 910fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen SDDbgInfo::DbgIterator ByvalParmDbgEnd() { 911fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen return DbgInfo->ByvalParmDbgEnd(); 912fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen } 913bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 914cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 915d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 91637ce9df0da6cddc3b8bfef9b63d33d058a0f2f15Chris Lattner /// CreateStackTemporary - Create a stack temporary, suitable for holding the 917364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang /// specified value type. If minAlign is specified, the slot size will have 918364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang /// at least that alignment. 919e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue CreateStackTemporary(EVT VT, unsigned minAlign = 1); 92047d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 92147d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands /// CreateStackTemporary - Create a stack temporary suitable for holding 92247d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands /// either of the specified value types. 923e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue CreateStackTemporary(EVT VT1, EVT VT2); 92447d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 925fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// FoldConstantArithmetic - 926f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling SDValue FoldConstantArithmetic(unsigned Opcode, 927e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT, 928f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling ConstantSDNode *Cst1, 929f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling ConstantSDNode *Cst2); 930f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling 93151dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner /// FoldSetCC - Constant fold a setcc to true or false. 932e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue FoldSetCC(EVT VT, SDValue N1, 933ff97d4fe81ef0dcee9fe490bed8ab08e40251905Dale Johannesen SDValue N2, ISD::CondCode Cond, DebugLoc dl); 934fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 9352e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// SignBitIsZero - Return true if the sign bit of Op is known to be zero. We 9362e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// use this predicate to simplify operations downstream. 937475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool SignBitIsZero(SDValue Op, unsigned Depth = 0) const; 9382e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman 939ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// MaskedValueIsZero - Return true if 'Op & Mask' is known to be zero. We 940ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// use this predicate to simplify operations downstream. Op and Mask are 941ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be the same type. 942475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool MaskedValueIsZero(SDValue Op, const APInt &Mask, unsigned Depth = 0) 943ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman const; 944fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 945ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeMaskedBits - Determine which of the bits specified in Mask are 946ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be either zero or one and return them in the KnownZero/KnownOne 947ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// bitsets. This code only analyzes bits in Mask, in order to short-circuit 948fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// processing. Targets can implement the computeMaskedBitsForTargetNode 949ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// method in the TargetLowering class to allow target nodes to be understood. 950475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ComputeMaskedBits(SDValue Op, const APInt &Mask, APInt &KnownZero, 951fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman APInt &KnownOne, unsigned Depth = 0) const; 952fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman 953ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeNumSignBits - Return the number of times the sign bit of the 954ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// register is replicated into the other bits. We know that at least 1 bit 955ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// is always equal to the sign bit (itself), but other cases can give us 956ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// information. For example, immediately after an "SRA X, 2", we know that 957ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// the top 3 bits are all equal to each other, so we return 3. Targets can 958ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// implement the ComputeNumSignBitsForTarget method in the TargetLowering 959ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// class to allow target nodes to be understood. 960475871a144eb604ddaf37503397ba0941442e5fbDan Gohman unsigned ComputeNumSignBits(SDValue Op, unsigned Depth = 0) const; 961a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng 9628d44b28bc6f615b9ad79b066987d53b1ea2a2942Dan Gohman /// isKnownNeverNan - Test whether the given SDValue is known to never be NaN. 9638d44b28bc6f615b9ad79b066987d53b1ea2a2942Dan Gohman bool isKnownNeverNaN(SDValue Op) const; 9648d44b28bc6f615b9ad79b066987d53b1ea2a2942Dan Gohman 965e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman /// isKnownNeverZero - Test whether the given SDValue is known to never be 966e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman /// positive or negative Zero. 967e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman bool isKnownNeverZero(SDValue Op) const; 968e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman 969e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman /// isEqualTo - Test whether two SDValues are known to compare equal. This 970e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman /// is true if they are the same value, or if one is negative zero and the 971e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman /// other positive zero. 972e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman bool isEqualTo(SDValue A, SDValue B) const; 973e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman 974475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// isVerifiedDebugInfoDesc - Returns true if the specified SDValue has 975a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng /// been verified as a debug information descriptor. 976475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool isVerifiedDebugInfoDesc(SDValue Op) const; 97777f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng 97877f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// getShuffleScalarElt - Returns the scalar element that will make up the ith 97977f0b7a50a08614b5ffd58f1864b68a9a30d0cb0Evan Cheng /// element of the result of the vector shuffle. 9805a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue getShuffleScalarElt(const ShuffleVectorSDNode *N, unsigned Idx); 981fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 982cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// UnrollVectorOp - Utility function used by legalize and lowering to 983cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// "unroll" a vector operation by splitting out the scalars and operating 984cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// on each element individually. If the ResNE is 0, fully unroll the vector 985cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// op. If ResNE is less than the width of the vector op, unroll up to ResNE. 986cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// If the ResNE is greater than the width of the vector op, unroll the 987cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// vector op and fill the end of the resulting vector with UNDEFS. 988cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang SDValue UnrollVectorOp(SDNode *N, unsigned ResNE = 0); 989cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang 99064fa4a9584113f63eccc1a650e7e0cc4ddbab3f6Evan Cheng /// isConsecutiveLoad - Return true if LD is loading 'Bytes' bytes from a 99164fa4a9584113f63eccc1a650e7e0cc4ddbab3f6Evan Cheng /// location that is 'Dist' units away from the location that the 'Base' load 99264fa4a9584113f63eccc1a650e7e0cc4ddbab3f6Evan Cheng /// is loading from. 99364fa4a9584113f63eccc1a650e7e0cc4ddbab3f6Evan Cheng bool isConsecutiveLoad(LoadSDNode *LD, LoadSDNode *Base, 99464fa4a9584113f63eccc1a650e7e0cc4ddbab3f6Evan Cheng unsigned Bytes, int Dist) const; 99564fa4a9584113f63eccc1a650e7e0cc4ddbab3f6Evan Cheng 996f2dc5c785dea1816cbc064b58b4b6ea23c4fd7d4Evan Cheng /// InferPtrAlignment - Infer alignment of a load / store address. Return 0 if 997f2dc5c785dea1816cbc064b58b4b6ea23c4fd7d4Evan Cheng /// it cannot be inferred. 9987ced2e0b304e76ab746c7d9a54ad8d4930445a38Evan Cheng unsigned InferPtrAlignment(SDValue Ptr) const; 999f2dc5c785dea1816cbc064b58b4b6ea23c4fd7d4Evan Cheng 1000d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 1001095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman bool RemoveNodeFromCSEMaps(SDNode *N); 1002399461095b033438d1f5863cd0d6f82a616f74dcDan Gohman void AddModifiedNodeToCSEMaps(SDNode *N, DAGUpdateListener *UpdateListener); 1003475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, SDValue Op, void *&InsertPos); 1004475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, SDValue Op1, SDValue Op2, 1005a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 1006475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, const SDValue *Ops, unsigned NumOps, 1007a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 1008b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 1009fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 1010c53361294957b63a9c1e405256c6f0a81db1685cDan Gohman void DeallocateNode(SDNode *N); 10119c6e70eca9a49c146b26621cbcbb9464ceeac024Dan Gohman 1012e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson unsigned getEVTAlignment(EVT MemoryVT) const; 1013f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 1014f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman void allnodes_clear(); 1015fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1016101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// VTList - List of non-single value types. 1017e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman std::vector<SDVTList> VTList; 1018fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1019101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// CondCodeNodes - Maps to auto-CSE operations. 10207cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 10211cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 102215e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 1023e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson std::map<EVT, SDNode*, EVT::compareRawBits> ExtendedValueTypeNodes; 1024056292fd738924f3f7703725d8f630983794b5a5Bill Wendling StringMap<SDNode*> ExternalSymbols; 10251af2231da64a14d638406d133c7912bfc1c8a9ceChris Lattner 10261af2231da64a14d638406d133c7912bfc1c8a9ceChris Lattner std::map<std::pair<std::string, unsigned char>,SDNode*> TargetExternalSymbols; 1027cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 1028cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 10291080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 10301080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 10311080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 10321080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 10331080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 10341080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 10351080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 10361080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 10371080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 10381080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 1039b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 1040cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1041cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 1042