SelectionDAG.h revision 9cf37e8b48732fccd4c301ed51aafed7074bd84e
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 9922a54c1cd711afccd4558374918d12a939e1cca5Benjamin Kramer ArrayRef<SDDbgValue*> getSDDbgValues(const SDNode *Node) { 10022a54c1cd711afccd4558374918d12a939e1cca5Benjamin Kramer DenseMap<const SDNode*, SmallVector<SDDbgValue*, 2> >::iterator I = 10122a54c1cd711afccd4558374918d12a939e1cca5Benjamin Kramer DbgValMap.find(Node); 10222a54c1cd711afccd4558374918d12a939e1cca5Benjamin Kramer if (I != DbgValMap.end()) 10322a54c1cd711afccd4558374918d12a939e1cca5Benjamin Kramer return I->second; 10422a54c1cd711afccd4558374918d12a939e1cca5Benjamin Kramer return ArrayRef<SDDbgValue*>(); 105bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen } 106bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng 107bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng typedef SmallVector<SDDbgValue*,32>::iterator DbgIterator; 108bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng DbgIterator DbgBegin() { return DbgValues.begin(); } 109bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng DbgIterator DbgEnd() { return DbgValues.end(); } 110fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen DbgIterator ByvalParmDbgBegin() { return ByvalParmDbgValues.begin(); } 111fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen DbgIterator ByvalParmDbgEnd() { return ByvalParmDbgValues.end(); } 112bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen}; 113bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 11425cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sandsenum CombineLevel { 115501852423d34578bc41a745681783b04124dd0dbEli Friedman BeforeLegalizeTypes, 116501852423d34578bc41a745681783b04124dd0dbEli Friedman AfterLegalizeTypes, 117501852423d34578bc41a745681783b04124dd0dbEli Friedman AfterLegalizeVectorOps, 118501852423d34578bc41a745681783b04124dd0dbEli Friedman AfterLegalizeDAG 11925cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands}; 12025cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands 121cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greeneclass SelectionDAG; 122cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greenevoid checkForCycles(const SDNode *N); 123cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greenevoid checkForCycles(const SelectionDAG *DAG); 124cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene 125c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// SelectionDAG class - This is used to represent a portion of an LLVM function 126c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// in a low-level Data Dependence DAG representation suitable for instruction 127c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection. This DAG is constructed as the first step of instruction 128c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// selection in order to allow implementation of machine specific optimizations 129c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// and code simplifications. 130c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// 131c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// The representation used by the SelectionDAG is a target-independent 132c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// representation, which has some similarities to the GCC RTL representation, 133c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// but is significantly more simple, powerful, and is a graph form instead of a 134c3aae25116e66c177579b0b79182b09340b19753Chris Lattner/// linear form. 135cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner/// 136cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerclass SelectionDAG { 13750d2b1ac029d63500ea9b9347561b1454fa6ed6aDan Gohman const TargetMachine &TM; 138d858e90f039f5fcdc2fa93035e911a5a9505cc50Dan Gohman const TargetLowering &TLI; 139ff7a562751604a9fe13efc75bd59622244b54d35Dan Gohman const TargetSelectionDAGInfo &TSI; 1407c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman MachineFunction *MF; 141512063dd0f91a76b9dd904dfff72a52b4d09e89fChris Lattner LLVMContext *Context; 1420508d047fefef36d4f943ee13c82c18cf3a943abDevang Patel CodeGenOpt::Level OptLevel; 143cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 144f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// EntryNode - The starting token. 145f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman SDNode EntryNode; 146f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 147f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// Root - The root of the entire DAG. 148f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman SDValue Root; 149cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 150213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// AllNodes - A linked list of nodes in the current DAG. 151fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman ilist<SDNode> AllNodes; 152fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman 153f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// NodeAllocatorType - The AllocatorType for allocating SDNodes. We use 154f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// pool allocation with recycling. 155f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman typedef RecyclingAllocator<BumpPtrAllocator, SDNode, sizeof(LargestSDNode), 156f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman AlignOf<MostAlignedSDNode>::Alignment> 157f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman NodeAllocatorType; 158f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 159f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// NodeAllocator - Pool allocation for nodes. 160f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman NodeAllocatorType NodeAllocator; 161691ef2ba066dda14ae4ac0ad645054fbc967785aAndrew Lenharth 162213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner /// CSEMap - This structure is used to memoize nodes, automatically performing 163d23b33435ae722ff5aa5ab97135a4f31041959e2Bob Wilson /// CSE with existing nodes when a duplicate is requested. 164583bd47f777fe3eb8305872fa0eadab31e833dffJim Laskey FoldingSet<SDNode> CSEMap; 165213a16c637926bfc38ba373d3aba6778e181e3ecChris Lattner 166f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// OperandAllocator - Pool allocation for machine-opcode SDNode operands. 167f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman BumpPtrAllocator OperandAllocator; 168f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 169e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// Allocator - Pool allocation for misc. objects that are created once per 170e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// SelectionDAG. 171e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman BumpPtrAllocator Allocator; 172e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman 173b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendling /// SDNodeOrdering - The ordering of the SDNodes. It roughly corresponds to 174b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendling /// the ordering of the original LLVM instructions. 175b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendling SDNodeOrdering *Ordering; 176819309efec6f11ba752bd7cbfe186495745f020bDaniel Dunbar 177bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen /// DbgInfo - Tracks dbg_value information through SDISel. 178bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen SDDbgInfo *DbgInfo; 179bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 180c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// setGraphColorHelper - Implementation of setSubgraphColor. 181c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// Return whether we had to truncate the search. 182c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// 183c23b8719ef9d6b1220e854b37d40e9e1c48a82bcGabor Greif bool setSubgraphColorHelper(SDNode *N, const char *Color, 184c23b8719ef9d6b1220e854b37d40e9e1c48a82bcGabor Greif DenseSet<SDNode *> &visited, 185c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene int level, bool &printed); 186c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene 187819309efec6f11ba752bd7cbfe186495745f020bDaniel Dunbar void operator=(const SelectionDAG&); // Do not implement. 188819309efec6f11ba752bd7cbfe186495745f020bDaniel Dunbar SelectionDAG(const SelectionDAG&); // Do not implement. 189819309efec6f11ba752bd7cbfe186495745f020bDaniel Dunbar 190cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattnerpublic: 1910508d047fefef36d4f943ee13c82c18cf3a943abDevang Patel explicit SelectionDAG(const TargetMachine &TM, llvm::CodeGenOpt::Level); 192cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner ~SelectionDAG(); 193cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1947c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// init - Prepare this SelectionDAG to process code in the given 1957c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// MachineFunction. 1967c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// 197de6e783b2490447866b592cd39855e6f4d25efffChris Lattner void init(MachineFunction &mf); 1987c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman 1997c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman /// clear - Clear state and free memory necessary to make this 200f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// SelectionDAG ready to process a new block. 201f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman /// 2027c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman void clear(); 203f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 2047c3234c6be0dc0bdf4b5d6f848cd728a77f349d7Dan Gohman MachineFunction &getMachineFunction() const { return *MF; } 20550d2b1ac029d63500ea9b9347561b1454fa6ed6aDan Gohman const TargetMachine &getTarget() const { return TM; } 206d858e90f039f5fcdc2fa93035e911a5a9505cc50Dan Gohman const TargetLowering &getTargetLoweringInfo() const { return TLI; } 207ff7a562751604a9fe13efc75bd59622244b54d35Dan Gohman const TargetSelectionDAGInfo &getSelectionDAGInfo() const { return TSI; } 208d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson LLVMContext *getContext() const {return Context; } 209cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 210ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// viewGraph - Pop up a GraphViz/gv window with the DAG rendered using 'dot'. 2111080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner /// 212462dc7f4960e5074ddf4769ec8b2ef1ba7a4d2c8Dan Gohman void viewGraph(const std::string &Title); 2130b12aef49087b57d276ed760a83525d1e2602144Dan Gohman void viewGraph(); 214fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 215ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#ifndef NDEBUG 216ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey std::map<const SDNode *, std::string> NodeGraphAttrs; 217ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey#endif 2181080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 219ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// clearGraphAttrs - Clear all previously defined node graph attributes. 220ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Intended to be used from a debugging tool (eg. gdb). 221ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void clearGraphAttrs(); 222fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 223ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".) 224ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 225ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphAttrs(const SDNode *N, const char *Attrs); 226fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 227ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".) 228ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// Used from getNodeAttributes. 229ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey const std::string getGraphAttrs(const SDNode *N) const; 230fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 231ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// setGraphColor - Convenience for setting node color attribute. 232ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey /// 233ec20402c90b605afeedbcf0e3aabe6f8054f23ddJim Laskey void setGraphColor(const SDNode *N, const char *Color); 2341080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 235c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// setGraphColor - Convenience for setting subgraph color attribute. 236c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene /// 237c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene void setSubgraphColor(SDNode *N, const char *Color); 238c5e7e8d87d4a3b10edd5ac93ba1f3cdb4d1b449aDavid Greene 239fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman typedef ilist<SDNode>::const_iterator allnodes_const_iterator; 240b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_begin() const { return AllNodes.begin(); } 241b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_const_iterator allnodes_end() const { return AllNodes.end(); } 242fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman typedef ilist<SDNode>::iterator allnodes_iterator; 243b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_begin() { return AllNodes.begin(); } 244b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner allnodes_iterator allnodes_end() { return AllNodes.end(); } 245fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman ilist<SDNode>::size_type allnodes_size() const { 2460e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman return AllNodes.size(); 2470e5f1306b059b62d7725f324e087efbc8e7a782dDan Gohman } 248fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 249c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getRoot - Return the root tag of the SelectionDAG. 250cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 251475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue &getRoot() const { return Root; } 252cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 253c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getEntryNode - Return the token chain corresponding to the entry of the 254c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// function. 255f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman SDValue getEntryNode() const { 256f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman return SDValue(const_cast<SDNode *>(&EntryNode), 0); 257f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman } 258cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 259c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// setRoot - Set the current root tag of the SelectionDAG. 260cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 261475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue &setRoot(SDValue N) { 262825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((!N.getNode() || N.getValueType() == MVT::Other) && 263acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman "DAG root value is not a chain!"); 264cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene if (N.getNode()) 265cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene checkForCycles(N.getNode()); 266cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene Root = N; 267cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene if (N.getNode()) 268cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene checkForCycles(this); 269cf495bc2e505e52ad018da55bed11c7b8bc97db5David Greene return Root; 270acaf09dbe4a6781163857db1321bbd5795e7d410Dan Gohman } 271cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 2721d4d41411190dd9e62764e56713753d4155764ddNate Begeman /// Combine - This iterates over the nodes in the SelectionDAG, folding 27325cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// certain types of nodes together, or eliminating superfluous nodes. The 27425cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// Level argument controls whether Combine is allowed to produce nodes and 27525cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// types that are illegal on the target. 27698a366d547772010e94609e4584489b3e5ce0043Bill Wendling void Combine(CombineLevel Level, AliasAnalysis &AA, 27798a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel); 27825cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands 27901d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// LegalizeTypes - This transforms the SelectionDAG into a SelectionDAG that 28025cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// only uses types natively supported by the target. Returns "true" if it 28125cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands /// made any changes. 28201d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// 28301d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// Note that this is an involved process that may invalidate pointers into 28401d029b82cb08367d81aa10cdc94d05360466649Chris Lattner /// the graph. 28525cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands bool LegalizeTypes(); 28625cf2275ff7de3de3bc0e508abaf457413d74725Duncan Sands 287c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Legalize - This transforms the SelectionDAG into a SelectionDAG that is 288c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// compatible with the target instruction selector, as indicated by the 289c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// TargetLowering object. 290cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 291c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// Note that this is an involved process that may invalidate pointers into 292c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// the graph. 293975716af1b9a09274df6c2d92683449015bd8564Dan Gohman void Legalize(); 294c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 2955c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// LegalizeVectors - This transforms the SelectionDAG into a SelectionDAG 2965c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// that only uses vector math operations supported by the target. This is 2975c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// necessary as a separate step from Legalize because unrolling a vector 2985c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// operation can introduce illegal types, which requires running 2995c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// LegalizeTypes again. 3005c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// 3015c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// This returns true if it made any changes; in that case, LegalizeTypes 3025c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// is called again before Legalize. 3035c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// 3045c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// Note that this is an involved process that may invalidate pointers into 3055c22c8074404797f1313b1334757254fb5c6487aEli Friedman /// the graph. 3065c22c8074404797f1313b1334757254fb5c6487aEli Friedman bool LegalizeVectors(); 3075c22c8074404797f1313b1334757254fb5c6487aEli Friedman 308d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner /// RemoveDeadNodes - This method deletes all unreachable nodes in the 309190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner /// SelectionDAG. 310190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner void RemoveDeadNodes(); 311130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 312130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// DeleteNode - Remove the specified node from the system. This node must 313130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng /// have no referrers. 314130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng void DeleteNode(SDNode *N); 315130a6471b90f66e99b1f9f42877fdf611c330ac6Evan Cheng 31670046e920fa37989a041af663ada2b2b646e258fChris Lattner /// getVTList - Return an SDVTList that represents the list of values 31770046e920fa37989a041af663ada2b2b646e258fChris Lattner /// specified. 318e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDVTList getVTList(EVT VT); 319e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDVTList getVTList(EVT VT1, EVT VT2); 320e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDVTList getVTList(EVT VT1, EVT VT2, EVT VT3); 321e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDVTList getVTList(EVT VT1, EVT VT2, EVT VT3, EVT VT4); 322e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDVTList getVTList(const EVT *VTs, unsigned NumVTs); 323fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3241b1a49714ef26225a42199cf2930529f31868322Chris Lattner //===--------------------------------------------------------------------===// 32570046e920fa37989a041af663ada2b2b646e258fChris Lattner // Node creation methods. 32670046e920fa37989a041af663ada2b2b646e258fChris Lattner // 327e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstant(uint64_t Val, EVT VT, bool isTarget = false); 328e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstant(const APInt &Val, EVT VT, bool isTarget = false); 329e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstant(const ConstantInt &Val, EVT VT, bool isTarget = false); 330475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getIntPtrConstant(uint64_t Val, bool isTarget = false); 331e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstant(uint64_t Val, EVT VT) { 332cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner return getConstant(Val, VT, true); 333cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 334e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstant(const APInt &Val, EVT VT) { 3356394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman return getConstant(Val, VT, true); 3366394b099e836f56a937cdcc7332c9487b504ca68Dan Gohman } 337e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstant(const ConstantInt &Val, EVT VT) { 3384fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman return getConstant(Val, VT, true); 3394fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman } 3400a406ae0d940d92c51ee145b48ff7a483a366849Dale Johannesen // The forms below that take a double should only be used for simple 3410a406ae0d940d92c51ee145b48ff7a483a366849Dale Johannesen // constants that can be exactly represented in VT. No checks are made. 342e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstantFP(double Val, EVT VT, bool isTarget = false); 343e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstantFP(const APFloat& Val, EVT VT, bool isTarget = false); 344e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstantFP(const ConstantFP &CF, EVT VT, bool isTarget = false); 345e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstantFP(double Val, EVT VT) { 346c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getConstantFP(Val, VT, true); 347c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 348e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstantFP(const APFloat& Val, EVT VT) { 349f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen return getConstantFP(Val, VT, true); 350f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen } 351e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetConstantFP(const ConstantFP &Val, EVT VT) { 3524fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman return getConstantFP(Val, VT, true); 3534fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman } 3540d881dabc1a4e1aefad6dd38de166d8358285638Devang Patel SDValue getGlobalAddress(const GlobalValue *GV, DebugLoc DL, EVT VT, 3552a4ed82ce2ba4a02f2a02eb4ed8ce5186f3f93daChris Lattner int64_t offset = 0, bool isTargetGA = false, 3562a4ed82ce2ba4a02f2a02eb4ed8ce5186f3f93daChris Lattner unsigned char TargetFlags = 0); 3570d881dabc1a4e1aefad6dd38de166d8358285638Devang Patel SDValue getTargetGlobalAddress(const GlobalValue *GV, DebugLoc DL, EVT VT, 3582a4ed82ce2ba4a02f2a02eb4ed8ce5186f3f93daChris Lattner int64_t offset = 0, 3592a4ed82ce2ba4a02f2a02eb4ed8ce5186f3f93daChris Lattner unsigned char TargetFlags = 0) { 3600d881dabc1a4e1aefad6dd38de166d8358285638Devang Patel return getGlobalAddress(GV, DL, VT, offset, true, TargetFlags); 361cbea3045ce0bdd061c494a831d0ce2d5834211ccChris Lattner } 362e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getFrameIndex(int FI, EVT VT, bool isTarget = false); 363e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetFrameIndex(int FI, EVT VT) { 364c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner return getFrameIndex(FI, VT, true); 365c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 366e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getJumpTable(int JTI, EVT VT, bool isTarget = false, 367f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned char TargetFlags = 0); 368e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetJumpTable(int JTI, EVT VT, unsigned char TargetFlags = 0) { 369f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner return getJumpTable(JTI, VT, true, TargetFlags); 370c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 37146510a73e977273ec67747eb34cbdb43f815e451Dan Gohman SDValue getConstantPool(const Constant *C, EVT VT, 372f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned Align = 0, int Offs = 0, bool isT=false, 373f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned char TargetFlags = 0); 37446510a73e977273ec67747eb34cbdb43f815e451Dan Gohman SDValue getTargetConstantPool(const Constant *C, EVT VT, 375f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned Align = 0, int Offset = 0, 376f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned char TargetFlags = 0) { 377f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner return getConstantPool(C, VT, Align, Offset, true, TargetFlags); 378c9f8f416800784ca6453222b307bc44ad24739b0Chris Lattner } 379e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConstantPool(MachineConstantPoolValue *C, EVT VT, 380f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned Align = 0, int Offs = 0, bool isT=false, 381f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner unsigned char TargetFlags = 0); 382475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getTargetConstantPool(MachineConstantPoolValue *C, 383e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT, unsigned Align = 0, 384f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner int Offset = 0, unsigned char TargetFlags=0) { 385f5a5546f435a261c93078defb41ed18d9cafd7d3Chris Lattner return getConstantPool(C, VT, Align, Offset, true, TargetFlags); 386d6594ae54cfde4db4d30272192645c0a45fb9902Evan Cheng } 3878ad9b43e690e8773cf836b30e8da26bc71e18844Dale Johannesen // When generating a branch to a BB, we don't in general know enough 3888ad9b43e690e8773cf836b30e8da26bc71e18844Dale Johannesen // to provide debug info for the BB at that time, so keep this one around. 389475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getBasicBlock(MachineBasicBlock *MBB); 390e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getBasicBlock(MachineBasicBlock *MBB, DebugLoc dl); 391e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getExternalSymbol(const char *Sym, EVT VT); 392e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getExternalSymbol(const char *Sym, DebugLoc dl, EVT VT); 393e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getTargetExternalSymbol(const char *Sym, EVT VT, 3941af2231da64a14d638406d133c7912bfc1c8a9ceChris Lattner unsigned char TargetFlags = 0); 395e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getValueType(EVT); 396e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getRegister(unsigned Reg, EVT VT); 3979cf37e8b48732fccd4c301ed51aafed7074bd84eJakob Stoklund Olesen SDValue getRegisterMask(const uint32_t *RegMask); 3987561d480953e0a2faa4af9be0a00b1180097c4bdChris Lattner SDValue getEHLabel(DebugLoc dl, SDValue Root, MCSymbol *Label); 39946510a73e977273ec67747eb34cbdb43f815e451Dan Gohman SDValue getBlockAddress(const BlockAddress *BA, EVT VT, 40029cbade25aa094ca9a149a96a8614cf6f3247480Dan Gohman bool isTarget = false, unsigned char TargetFlags = 0); 401c3aae25116e66c177579b0b79182b09340b19753Chris Lattner 4020f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyToReg(SDValue Chain, DebugLoc dl, unsigned Reg, SDValue N) { 403825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return getNode(ISD::CopyToReg, dl, MVT::Other, Chain, 4040f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen getRegister(Reg, N.getValueType()), N); 4050f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 406cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 407e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyToReg method takes an extra operand, which 40829d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner // indicates that there is potentially an incoming glue value (if Glue is not 40929d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner // null) and that there should be a glue result. 4100f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyToReg(SDValue Chain, DebugLoc dl, unsigned Reg, SDValue N, 41129d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner SDValue Glue) { 412f1b4eafbfec976f939ec0ea3e8acf91cef5363e3Chris Lattner SDVTList VTs = getVTList(MVT::Other, MVT::Glue); 41329d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner SDValue Ops[] = { Chain, getRegister(Reg, N.getValueType()), N, Glue }; 41429d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner return getNode(ISD::CopyToReg, dl, VTs, Ops, Glue.getNode() ? 4 : 3); 4150f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 41666a48bbc3565b40ea0e6f2d58cf5e3a8e64802efEvan Cheng 417475871a144eb604ddaf37503397ba0941442e5fbDan Gohman // Similar to last getCopyToReg() except parameter Reg is a SDValue 4180f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getCopyToReg(SDValue Chain, DebugLoc dl, SDValue Reg, SDValue N, 41929d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner SDValue Glue) { 420f1b4eafbfec976f939ec0ea3e8acf91cef5363e3Chris Lattner SDVTList VTs = getVTList(MVT::Other, MVT::Glue); 42129d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner SDValue Ops[] = { Chain, Reg, N, Glue }; 42229d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner return getNode(ISD::CopyToReg, dl, VTs, Ops, Glue.getNode() ? 4 : 3); 4230f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 424fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 425e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getCopyFromReg(SDValue Chain, DebugLoc dl, unsigned Reg, EVT VT) { 426825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDVTList VTs = getVTList(VT, MVT::Other); 4270f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Ops[] = { Chain, getRegister(Reg, VT) }; 428fc1665793e62eb4f26d24b8a19eecf59cd872e2aDan Gohman return getNode(ISD::CopyFromReg, dl, VTs, Ops, 2); 4290f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 430fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 431e3f1026683c38f6605ccaf698b7082f1b0a0f8c8Chris Lattner // This version of the getCopyFromReg method takes an extra operand, which 43229d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner // indicates that there is potentially an incoming glue value (if Glue is not 43329d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner // null) and that there should be a glue result. 434e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getCopyFromReg(SDValue Chain, DebugLoc dl, unsigned Reg, EVT VT, 43529d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner SDValue Glue) { 436f1b4eafbfec976f939ec0ea3e8acf91cef5363e3Chris Lattner SDVTList VTs = getVTList(VT, MVT::Other, MVT::Glue); 43729d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner SDValue Ops[] = { Chain, getRegister(Reg, VT), Glue }; 43829d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner return getNode(ISD::CopyFromReg, dl, VTs, Ops, Glue.getNode() ? 3 : 2); 4390f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen } 44018c2f13e0f9d0e5d6227cf6d1881e9ee3d1b6109Chris Lattner 441475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCondCode(ISD::CondCode Cond); 442cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 44377cdf30742284a173fe818417eb482224cdee8d4Mon P Wang /// Returns the ConvertRndSat Note: Avoid using this node because it may 44477cdf30742284a173fe818417eb482224cdee8d4Mon P Wang /// disappear in the future and most targets don't support it. 445e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getConvertRndSat(EVT VT, DebugLoc dl, SDValue Val, SDValue DTy, 4460f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue STy, 4470f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue Rnd, SDValue Sat, ISD::CvtCode Code); 4486154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson 4499008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman /// getVectorShuffle - Return an ISD::VECTOR_SHUFFLE node. The number of 4509008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman /// elements in VT, which must be a vector type, must match the number of 4515a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// mask elements NumElts. A integer mask element equal to -1 is treated as 4529008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman /// undefined. 4536154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson SDValue getVectorShuffle(EVT VT, DebugLoc dl, SDValue N1, SDValue N2, 4549008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman const int *MaskElts); 45577cdf30742284a173fe818417eb482224cdee8d4Mon P Wang 456a3c42f3d4e5d14c8f4fb9bb123e7759c425d041bNadav Rotem /// getAnyExtOrTrunc - Convert Op, which must be of integer type, to the 457a3c42f3d4e5d14c8f4fb9bb123e7759c425d041bNadav Rotem /// integer type VT, by either any-extending or truncating it. 458a3c42f3d4e5d14c8f4fb9bb123e7759c425d041bNadav Rotem SDValue getAnyExtOrTrunc(SDValue Op, DebugLoc DL, EVT VT); 459a3c42f3d4e5d14c8f4fb9bb123e7759c425d041bNadav Rotem 4603a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands /// getSExtOrTrunc - Convert Op, which must be of integer type, to the 4613a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands /// integer type VT, by either sign-extending or truncating it. 4623a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands SDValue getSExtOrTrunc(SDValue Op, DebugLoc DL, EVT VT); 4633a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands 4643a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands /// getZExtOrTrunc - Convert Op, which must be of integer type, to the 4653a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands /// integer type VT, by either zero-extending or truncating it. 4663a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands SDValue getZExtOrTrunc(SDValue Op, DebugLoc DL, EVT VT); 4673a66a68b0cc81193abfc074b1d360a4950151d38Duncan Sands 4681ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// getZeroExtendInReg - Return the expression required to zero extend the Op 4691ccae666f596d5aeca5c9942995763600b622062Chris Lattner /// value assuming it was the smaller SrcTy value. 470e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getZeroExtendInReg(SDValue Op, DebugLoc DL, EVT SrcTy); 471fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 4724c2454623841f05c6c665659b34c214950d12d7eBob Wilson /// getNOT - Create a bitwise NOT operation as (XOR Val, -1). 473e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNOT(DebugLoc DL, SDValue Val, EVT VT); 4744c2454623841f05c6c665659b34c214950d12d7eBob Wilson 4756a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have 47629d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner /// a glue result (to ensure it's not CSE'd). CALLSEQ_START does not have a 477e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen /// useful DebugLoc. 478475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCALLSEQ_START(SDValue Chain, SDValue Op) { 479f1b4eafbfec976f939ec0ea3e8acf91cef5363e3Chris Lattner SDVTList VTs = getVTList(MVT::Other, MVT::Glue); 480475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Chain, Op }; 481b494ccf02ce17318d3f2a7b2d674bec60781fc73Chris Lattner return getNode(ISD::CALLSEQ_START, DebugLoc(), VTs, Ops, 2); 4826a5b6d7633c96c72ca7d5f8ba0c855e4690ada04Chris Lattner } 4831ccae666f596d5aeca5c9942995763600b622062Chris Lattner 4840f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling /// getCALLSEQ_END - Return a new CALLSEQ_END node, which always must have a 48529d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner /// glue result (to ensure it's not CSE'd). CALLSEQ_END does not have 486e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen /// a useful DebugLoc. 487475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getCALLSEQ_END(SDValue Chain, SDValue Op1, SDValue Op2, 48829d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner SDValue InGlue) { 489f1b4eafbfec976f939ec0ea3e8acf91cef5363e3Chris Lattner SDVTList NodeTys = getVTList(MVT::Other, MVT::Glue); 490475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 4> Ops; 4910f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Chain); 4920f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op1); 4930f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling Ops.push_back(Op2); 49429d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner Ops.push_back(InGlue); 495b494ccf02ce17318d3f2a7b2d674bec60781fc73Chris Lattner return getNode(ISD::CALLSEQ_END, DebugLoc(), NodeTys, &Ops[0], 49629d8f0cae425f1bba583565227eaebf58f26ce73Chris Lattner (unsigned)Ops.size() - (InGlue.getNode() == 0 ? 1 : 0)); 4970f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling } 4980f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling 499e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen /// getUNDEF - Return an UNDEF node. UNDEF does not have a useful DebugLoc. 500e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getUNDEF(EVT VT) { 501b494ccf02ce17318d3f2a7b2d674bec60781fc73Chris Lattner return getNode(ISD::UNDEF, DebugLoc(), VT); 502e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen } 503e8d7230f480654cdb8ff1c3d0a38e1e9ab0bd55fDale Johannesen 504b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen /// getGLOBAL_OFFSET_TABLE - Return a GLOBAL_OFFSET_TABLE node. This does 505b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen /// not have a useful DebugLoc. 506e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getGLOBAL_OFFSET_TABLE(EVT VT) { 507b494ccf02ce17318d3f2a7b2d674bec60781fc73Chris Lattner return getNode(ISD::GLOBAL_OFFSET_TABLE, DebugLoc(), VT); 508b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen } 509b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen 510c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getNode - Gets or creates the specified node. 511cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 512e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT); 513e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, SDValue N); 514e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, SDValue N1, SDValue N2); 515e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, 5167ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3); 517e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, 5187ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4); 519e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, 5207ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4, 5217ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N5); 522e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, 5237ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDUse *Ops, unsigned NumOps); 524e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, EVT VT, 5257ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 5267ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, 527e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson const std::vector<EVT> &ResultTys, 5287ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 529e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getNode(unsigned Opcode, DebugLoc DL, const EVT *VTs, unsigned NumVTs, 5307ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 5317ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 5327ade28cd62f5188951387e1056a46001388a21f9Bill Wendling const SDValue *Ops, unsigned NumOps); 5337ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs); 5347ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, SDValue N); 5357ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 5367ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2); 5377ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 5387ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3); 5397ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 5407ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4); 5417ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue getNode(unsigned Opcode, DebugLoc DL, SDVTList VTs, 5427ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N1, SDValue N2, SDValue N3, SDValue N4, 5437ade28cd62f5188951387e1056a46001388a21f9Bill Wendling SDValue N5); 544475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 54598ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /// getStackArgumentTokenFactor - Compute a TokenFactor to force all 54698ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /// the incoming stack arguments to be loaded from the stack. This is 54798ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /// used in tail call lowering to protect stack arguments from being 54898ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /// clobbered. 54998ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman SDValue getStackArgumentTokenFactor(SDValue Chain); 55098ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 5510f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getMemcpy(SDValue Chain, DebugLoc dl, SDValue Dst, SDValue Src, 55220adc9dc4650313f017b27d9818eb2176238113dMon P Wang SDValue Size, unsigned Align, bool isVol, bool AlwaysInline, 553e72f2027e9116c55a5b39ac72732df8d6c45d37cChris Lattner MachinePointerInfo DstPtrInfo, 554e72f2027e9116c55a5b39ac72732df8d6c45d37cChris Lattner MachinePointerInfo SrcPtrInfo); 5555c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 5560f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getMemmove(SDValue Chain, DebugLoc dl, SDValue Dst, SDValue Src, 55720adc9dc4650313f017b27d9818eb2176238113dMon P Wang SDValue Size, unsigned Align, bool isVol, 558e72f2027e9116c55a5b39ac72732df8d6c45d37cChris Lattner MachinePointerInfo DstPtrInfo, 559e72f2027e9116c55a5b39ac72732df8d6c45d37cChris Lattner MachinePointerInfo SrcPtrInfo); 5605c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 5610f502f6f44f2756f5cb7b17d8f1d8eae000d51b4Dale Johannesen SDValue getMemset(SDValue Chain, DebugLoc dl, SDValue Dst, SDValue Src, 56220adc9dc4650313f017b27d9818eb2176238113dMon P Wang SDValue Size, unsigned Align, bool isVol, 563e72f2027e9116c55a5b39ac72732df8d6c45d37cChris Lattner MachinePointerInfo DstPtrInfo); 5645c0d6ed325417baa5d119af9c2b6790231d8565fRafael Espindola 5657cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// getSetCC - Helper function to make it easier to build SetCC's if you just 566475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// have an ISD::CondCode instead of an SDValue. 5677cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner /// 568e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getSetCC(DebugLoc DL, EVT VT, SDValue LHS, SDValue RHS, 569d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling ISD::CondCode Cond) { 57028b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands assert(LHS.getValueType().isVector() == RHS.getValueType().isVector() && 57128b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands "Cannot compare scalars to vectors"); 57228b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands assert(LHS.getValueType().isVector() == VT.isVector() && 57328b77e968d2b01fc9da724762bd8ddcd80650e32Duncan Sands "Cannot compare scalars to vectors"); 574d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::SETCC, DL, VT, LHS, RHS, getCondCode(Cond)); 5757cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner } 5769373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman 5779373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// getSelectCC - Helper function to make it easier to build SelectCC's if you 578475871a144eb604ddaf37503397ba0941442e5fbDan Gohman /// just have an ISD::CondCode instead of an SDValue. 5799373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman /// 580d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling SDValue getSelectCC(DebugLoc DL, SDValue LHS, SDValue RHS, 581d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling SDValue True, SDValue False, ISD::CondCode Cond) { 582d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling return getNode(ISD::SELECT_CC, DL, True.getValueType(), 583d69c3141ed6d237ad19fdfbfcef8901491b24c2eBill Wendling LHS, RHS, True, False, getCondCode(Cond)); 5849373a81e53ce5f9f2c06c4209b8b886605aece08Nate Begeman } 585fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 586acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// getVAArg - VAArg produces a result and token chain, and takes a pointer 587acc398c195a697795bff3245943d104eb19192b9Nate Begeman /// and a source value as input. 588e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getVAArg(EVT VT, DebugLoc dl, SDValue Chain, SDValue Ptr, 589cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola SDValue SV, unsigned Align); 5907cbd525ba85ebe440d15fa359ec940e404d14906Nate Begeman 591fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// getAtomic - Gets a node for an atomic op, produces result and chain and 592c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// takes 3 operands 593e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT, SDValue Chain, 59460bddc8bcd787be645d2f3b64117fee884270e6aChris Lattner SDValue Ptr, SDValue Cmp, SDValue Swp, 59555ba816883842e793cdeb32fcb805c4e011b527fEli Friedman MachinePointerInfo PtrInfo, unsigned Alignment, 59655ba816883842e793cdeb32fcb805c4e011b527fEli Friedman AtomicOrdering Ordering, 59755ba816883842e793cdeb32fcb805c4e011b527fEli Friedman SynchronizationScope SynchScope); 598c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT, SDValue Chain, 599c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue Ptr, SDValue Cmp, SDValue Swp, 60055ba816883842e793cdeb32fcb805c4e011b527fEli Friedman MachineMemOperand *MMO, 60155ba816883842e793cdeb32fcb805c4e011b527fEli Friedman AtomicOrdering Ordering, 60255ba816883842e793cdeb32fcb805c4e011b527fEli Friedman SynchronizationScope SynchScope); 603ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 604327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman /// getAtomic - Gets a node for an atomic op, produces result (if relevant) 605327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman /// and chain and takes 2 operands. 606e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT, SDValue Chain, 607e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Ptr, SDValue Val, const Value* PtrVal, 608327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman unsigned Alignment, AtomicOrdering Ordering, 609327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman SynchronizationScope SynchScope); 610327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman SDValue getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT, SDValue Chain, 611327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman SDValue Ptr, SDValue Val, MachineMemOperand *MMO, 612327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman AtomicOrdering Ordering, 613327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman SynchronizationScope SynchScope); 614327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman 615327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman /// getAtomic - Gets a node for an atomic op, produces result and chain and 616327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman /// takes 1 operand. 617327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman SDValue getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT, EVT VT, 618327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman SDValue Chain, SDValue Ptr, const Value* PtrVal, 61955ba816883842e793cdeb32fcb805c4e011b527fEli Friedman unsigned Alignment, 62055ba816883842e793cdeb32fcb805c4e011b527fEli Friedman AtomicOrdering Ordering, 62155ba816883842e793cdeb32fcb805c4e011b527fEli Friedman SynchronizationScope SynchScope); 622327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman SDValue getAtomic(unsigned Opcode, DebugLoc dl, EVT MemVT, EVT VT, 623327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman SDValue Chain, SDValue Ptr, MachineMemOperand *MMO, 62455ba816883842e793cdeb32fcb805c4e011b527fEli Friedman AtomicOrdering Ordering, 62555ba816883842e793cdeb32fcb805c4e011b527fEli Friedman SynchronizationScope SynchScope); 626ab0b949e0e9de452f3b052b11634ab761e008b23Andrew Lenharth 627c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang /// getMemIntrinsicNode - Creates a MemIntrinsicNode that may produce a 628c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// result and takes a list of operands. Opcode may be INTRINSIC_VOID, 629c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// INTRINSIC_W_CHAIN, or a target-specific opcode with a value not 630c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// less than FIRST_TARGET_MEMORY_OPCODE. 631e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getMemIntrinsicNode(unsigned Opcode, DebugLoc dl, 632e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson const EVT *VTs, unsigned NumVTs, 633e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const SDValue *Ops, unsigned NumOps, 634e9ba5dd236f48708a00bd3bb0519148f943cc897Chris Lattner EVT MemVT, MachinePointerInfo PtrInfo, 635e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Align = 0, bool Vol = false, 636e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen bool ReadMem = true, bool WriteMem = true); 637c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang 638e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getMemIntrinsicNode(unsigned Opcode, DebugLoc dl, SDVTList VTList, 639e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen const SDValue *Ops, unsigned NumOps, 640e9ba5dd236f48708a00bd3bb0519148f943cc897Chris Lattner EVT MemVT, MachinePointerInfo PtrInfo, 641e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen unsigned Align = 0, bool Vol = false, 642e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen bool ReadMem = true, bool WriteMem = true); 643c4d1021ead43cfa7da08a8f7ddc9a059a8ba14c5Mon P Wang 644c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman SDValue getMemIntrinsicNode(unsigned Opcode, DebugLoc dl, SDVTList VTList, 645c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman const SDValue *Ops, unsigned NumOps, 646c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman EVT MemVT, MachineMemOperand *MMO); 647c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 6484bdcb61af33399d4e01fdf3c47ca1f1f5356e370Duncan Sands /// getMergeValues - Create a MERGE_VALUES node from the given operands. 64954c94525f420cab274af60e98a77f081f96e59c2Dale Johannesen SDValue getMergeValues(const SDValue *Ops, unsigned NumOps, DebugLoc dl); 650f9516208e57364ab1e7d8748af1f59a2ea5fb572Duncan Sands 651c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// getLoad - Loads are not normal binary operators: their result type is not 652c3aae25116e66c177579b0b79182b09340b19753Chris Lattner /// determined by their operands, and they produce a value AND a token chain. 653cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner /// 654e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue getLoad(EVT VT, DebugLoc dl, SDValue Chain, SDValue Ptr, 655e72f2027e9116c55a5b39ac72732df8d6c45d37cChris Lattner MachinePointerInfo PtrInfo, bool isVolatile, 656d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper bool isNonTemporal, bool isInvariant, unsigned Alignment, 657f96e4bd2a3b11928af75fb7472288930d16fec0bDan Gohman const MDNode *TBAAInfo = 0); 658a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings SDValue getExtLoad(ISD::LoadExtType ExtType, DebugLoc dl, EVT VT, 659e72f2027e9116c55a5b39ac72732df8d6c45d37cChris Lattner SDValue Chain, SDValue Ptr, MachinePointerInfo PtrInfo, 660e72f2027e9116c55a5b39ac72732df8d6c45d37cChris Lattner EVT MemVT, bool isVolatile, 661f96e4bd2a3b11928af75fb7472288930d16fec0bDan Gohman bool isNonTemporal, unsigned Alignment, 662f96e4bd2a3b11928af75fb7472288930d16fec0bDan Gohman const MDNode *TBAAInfo = 0); 663e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getIndexedLoad(SDValue OrigLoad, DebugLoc dl, SDValue Base, 664bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng SDValue Offset, ISD::MemIndexedMode AM); 665bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng SDValue getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType, 666bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng EVT VT, DebugLoc dl, 667bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng SDValue Chain, SDValue Ptr, SDValue Offset, 6685c5cb2a1717f8e30b1849d7ec1cf269bc5d66877Chris Lattner MachinePointerInfo PtrInfo, EVT MemVT, 669d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper bool isVolatile, bool isNonTemporal, bool isInvariant, 670d752e0f7e64585839cb3a458ef52456eaebbea3cPete Cooper unsigned Alignment, const MDNode *TBAAInfo = 0); 6715c5cb2a1717f8e30b1849d7ec1cf269bc5d66877Chris Lattner SDValue getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType, 6725c5cb2a1717f8e30b1849d7ec1cf269bc5d66877Chris Lattner EVT VT, DebugLoc dl, 6735c5cb2a1717f8e30b1849d7ec1cf269bc5d66877Chris Lattner SDValue Chain, SDValue Ptr, SDValue Offset, 674c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman EVT MemVT, MachineMemOperand *MMO); 6752d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 676ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// getStore - Helper function to build ISD::STORE nodes. 677ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng /// 678e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr, 6795c5cb2a1717f8e30b1849d7ec1cf269bc5d66877Chris Lattner MachinePointerInfo PtrInfo, bool isVolatile, 680f96e4bd2a3b11928af75fb7472288930d16fec0bDan Gohman bool isNonTemporal, unsigned Alignment, 681f96e4bd2a3b11928af75fb7472288930d16fec0bDan Gohman const MDNode *TBAAInfo = 0); 6825c5cb2a1717f8e30b1849d7ec1cf269bc5d66877Chris Lattner SDValue getStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr, 683c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MachineMemOperand *MMO); 6845c5cb2a1717f8e30b1849d7ec1cf269bc5d66877Chris Lattner SDValue getTruncStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr, 6855c5cb2a1717f8e30b1849d7ec1cf269bc5d66877Chris Lattner MachinePointerInfo PtrInfo, EVT TVT, 6865c5cb2a1717f8e30b1849d7ec1cf269bc5d66877Chris Lattner bool isNonTemporal, bool isVolatile, 687f96e4bd2a3b11928af75fb7472288930d16fec0bDan Gohman unsigned Alignment, 688f96e4bd2a3b11928af75fb7472288930d16fec0bDan Gohman const MDNode *TBAAInfo = 0); 689e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getTruncStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr, 690c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman EVT TVT, MachineMemOperand *MMO); 691e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue getIndexedStore(SDValue OrigStoe, DebugLoc dl, SDValue Base, 692e8c17335c53f0f37262ee342f46b0d00ac0c1493Dale Johannesen SDValue Offset, ISD::MemIndexedMode AM); 693ad071e1cd1a4b880019f1b2e827ee81867815f82Evan Cheng 694101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// getSrcValue - Construct a node to track a Value* through the backend. 695475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue getSrcValue(const Value *v); 69669de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 697decc2671516e6c52ee2f29f7746f8d02753845eaChris Lattner /// getMDNode - Return an MDNodeSDNode which holds an MDNode. 698decc2671516e6c52ee2f29f7746f8d02753845eaChris Lattner SDValue getMDNode(const MDNode *MD); 6996154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson 70092abc62399881ba9c525be80362c134ad836e2d9Duncan Sands /// getShiftAmountOperand - Return the specified value casted to 70192abc62399881ba9c525be80362c134ad836e2d9Duncan Sands /// the target's desired shift amount type. 7026154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson SDValue getShiftAmountOperand(EVT LHSTy, SDValue Op); 70392abc62399881ba9c525be80362c134ad836e2d9Duncan Sands 704b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// UpdateNodeOperands - *Mutate* the specified node in-place to have the 705b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// specified operands. If the resultant node already exists in the DAG, 706b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// this does not modify the specified node, instead it returns the node that 707b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// already exists. If the resultant node does not exist in the DAG, the 708b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input node is returned. As a degenerate case, if you specify the same 709b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner /// input operands as the node already has, the input node is returned. 710027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, SDValue Op); 711027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2); 712027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2, 713475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3); 714027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2, 715475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3, SDValue Op4); 716027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, SDValue Op1, SDValue Op2, 717475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op3, SDValue Op4, SDValue Op5); 718027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman SDNode *UpdateNodeOperands(SDNode *N, 719475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 720fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 7211b95095857b78e12138c22e76c7936611c51355bChris Lattner /// SelectNodeTo - These are used for target selectors to *mutate* the 7221b95095857b78e12138c22e76c7936611c51355bChris Lattner /// specified node to have the specified return type, Target opcode, and 7231b95095857b78e12138c22e76c7936611c51355bChris Lattner /// operands. Note that target opcodes are stored as 724e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// ~TargetOpcode in the node opcode field. The resultant node is returned. 725e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT); 726e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT, SDValue Op1); 727e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT, 728475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2); 729e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT, 730475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 731e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT, 732475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 733e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, EVT VT2); 734e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 735e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, const SDValue *Ops, unsigned NumOps); 736e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 737e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, EVT VT3, const SDValue *Ops, unsigned NumOps); 738e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned MachineOpc, EVT VT1, 739e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, EVT VT3, EVT VT4, const SDValue *Ops, 74013d6d446f62f908e8cf74acb3a4df65ea5f497ceBill Wendling unsigned NumOps); 741e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 742e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, SDValue Op1); 743e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 744e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, SDValue Op1, SDValue Op2); 745e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 746e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 747e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, EVT VT1, 748e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT2, EVT VT3, SDValue Op1, SDValue Op2, SDValue Op3); 749cd920d9ecfcefff13c3619a32b58399cac2e3630Dan Gohman SDNode *SelectNodeTo(SDNode *N, unsigned TargetOpc, SDVTList VTs, 750475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 751694481ee01bfe507c6e37de0dc1c64cff455eefdEvan Cheng 752df51247725143acb781c224faffd848cc7cf95d8Chris Lattner /// MorphNodeTo - This *mutates* the specified node to have the specified 753e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// return type, opcode, and operands. 754e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman SDNode *MorphNodeTo(SDNode *N, unsigned Opc, SDVTList VTs, 755475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 756753c8f20e45f6e4198c7cf4096ecc8948a029e9cChris Lattner 757602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman /// getMachineNode - These are used for target selectors to create a new node 758602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman /// with specified return type(s), MachineInstr opcode, and operands. 7596ae46c4c8757237bca2b78b589c96c37015bc356Evan Cheng /// 760602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman /// Note that getMachineNode returns the resultant node. If there is already 761602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman /// a node of the specified opcode and operands, it returns that node instead 762602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman /// of the current one. 763c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT); 764c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT, 765c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman SDValue Op1); 766c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT, 767c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman SDValue Op1, SDValue Op2); 768c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT, 769602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman SDValue Op1, SDValue Op2, SDValue Op3); 770c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT, 771602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman const SDValue *Ops, unsigned NumOps); 772c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2); 773c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 774602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman SDValue Op1); 775c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, 776602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT2, SDValue Op1, SDValue Op2); 777c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, 778602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT2, SDValue Op1, SDValue Op2, SDValue Op3); 779c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 780602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman const SDValue *Ops, unsigned NumOps); 781c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 782602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT3, SDValue Op1, SDValue Op2); 783c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 784602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT3, SDValue Op1, SDValue Op2, SDValue Op3); 785c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 786602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT3, const SDValue *Ops, unsigned NumOps); 787c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, EVT VT1, EVT VT2, 788602b0c8c17f458d2c80f2deb3c8e554d516ee316Dan Gohman EVT VT3, EVT VT4, const SDValue *Ops, unsigned NumOps); 789c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, 790c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman const std::vector<EVT> &ResultTys, const SDValue *Ops, 791c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman unsigned NumOps); 792c81b783e2777b70f4533a4750489d058b6b74ad9Dan Gohman MachineSDNode *getMachineNode(unsigned Opcode, DebugLoc dl, SDVTList VTs, 793c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman const SDValue *Ops, unsigned NumOps); 79408b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng 7956a402dc952ccad3f8fd0d9e272dbdd261f50854eDan Gohman /// getTargetExtractSubreg - A convenience function for creating 7966a402dc952ccad3f8fd0d9e272dbdd261f50854eDan Gohman /// TargetInstrInfo::EXTRACT_SUBREG nodes. 7976a402dc952ccad3f8fd0d9e272dbdd261f50854eDan Gohman SDValue getTargetExtractSubreg(int SRIdx, DebugLoc DL, EVT VT, 7986a402dc952ccad3f8fd0d9e272dbdd261f50854eDan Gohman SDValue Operand); 7996a402dc952ccad3f8fd0d9e272dbdd261f50854eDan Gohman 8005fcbf0d26ecb99d54c182f542bf8db43ff048d6dBob Wilson /// getTargetInsertSubreg - A convenience function for creating 8015fcbf0d26ecb99d54c182f542bf8db43ff048d6dBob Wilson /// TargetInstrInfo::INSERT_SUBREG nodes. 8025fcbf0d26ecb99d54c182f542bf8db43ff048d6dBob Wilson SDValue getTargetInsertSubreg(int SRIdx, DebugLoc DL, EVT VT, 8035fcbf0d26ecb99d54c182f542bf8db43ff048d6dBob Wilson SDValue Operand, SDValue Subreg); 8045fcbf0d26ecb99d54c182f542bf8db43ff048d6dBob Wilson 80508b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// getNodeIfExists - Get the specified node if it's already available, or 80608b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng /// else return NULL. 80708b1173971a51eb89d7d6ee0992c39170c86994aEvan Cheng SDNode *getNodeIfExists(unsigned Opcode, SDVTList VTs, 808475871a144eb604ddaf37503397ba0941442e5fbDan Gohman const SDValue *Ops, unsigned NumOps); 809fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 81031441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng /// getDbgValue - Creates a SDDbgValue node. 81131441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng /// 81231441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng SDDbgValue *getDbgValue(MDNode *MDPtr, SDNode *N, unsigned R, uint64_t Off, 81331441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng DebugLoc DL, unsigned O); 81446510a73e977273ec67747eb34cbdb43f815e451Dan Gohman SDDbgValue *getDbgValue(MDNode *MDPtr, const Value *C, uint64_t Off, 81531441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng DebugLoc DL, unsigned O); 81631441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng SDDbgValue *getDbgValue(MDNode *MDPtr, unsigned FI, uint64_t Off, 81731441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng DebugLoc DL, unsigned O); 81831441b7e95e0840e1ae144e5db6f791d6a36bc60Evan Cheng 819f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// DAGUpdateListener - Clients of various APIs that cause global effects on 820f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// the DAG can optionally implement this interface. This allows the clients 821f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// to handle the various sorts of updates that happen. 822f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner class DAGUpdateListener { 823f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner public: 824f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual ~DAGUpdateListener(); 825edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 826edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeDeleted - The node N that was deleted and, if E is not null, an 827edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// equivalent node E that replaced it. 828edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands virtual void NodeDeleted(SDNode *N, SDNode *E) = 0; 829edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands 830edfcf598faab9ce294712551ecf67093acd1c66eDuncan Sands /// NodeUpdated - The node N that was updated. 831f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner virtual void NodeUpdated(SDNode *N) = 0; 832f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner }; 833fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 834f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// RemoveDeadNode - Remove the specified node from the system. If any of its 835f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// operands then becomes dead, remove them as well. Inform UpdateListener 836f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// for each node deleted. 837f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner void RemoveDeadNode(SDNode *N, DAGUpdateListener *UpdateListener = 0); 838fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 8390fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman /// RemoveDeadNodes - This method deletes the unreachable nodes in the 8400fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman /// given list, and any nodes that become unreachable as a result. 8410fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman void RemoveDeadNodes(SmallVectorImpl<SDNode *> &DeadNodes, 8420fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman DAGUpdateListener *UpdateListener = 0); 8430fe9c6e7babb3c0731d9cb864ec498ec4184760fDan Gohman 8446542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// ReplaceAllUsesWith - Modify anything using 'From' to use 'To' instead. 84526005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// This can cause recursive merging of nodes in the DAG. Use the first 84626005b1b672aebd437edc561d381c5dd19a03ddbChris Lattner /// version if 'From' is known to have a single result, use the second 847c23e4968790395053f3f52aeb3342637fcaafdbfDan Gohman /// if you have two nodes with identical results (or if 'To' has a superset 848c23e4968790395053f3f52aeb3342637fcaafdbfDan Gohman /// of the results of 'From'), use the third otherwise. 8496542d950609208de3e1cde704c5f89aad864c0d9Chris Lattner /// 850fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// These methods all take an optional UpdateListener, which (if not null) is 851f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// informed about nodes that are deleted and modified due to recursive 852f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// changes in the dag. 853fde3f3061d665babeb78443119a09876098fc35eChris Lattner /// 8549ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// These functions only replace all existing uses. It's possible that as 8559ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// these replacements are being performed, CSE may cause the From node 8569ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// to be given new uses. These new uses of From are left in place, and 8577a2bdde0a0eebcd2125055e0eacaca040f0b766cChris Lattner /// not automatically transferred to To. 8589ad136c851e0a66eb471573aac9fec47d53a61baDan Gohman /// 859475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesWith(SDValue From, SDValue Op, 860f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 861fde3f3061d665babeb78443119a09876098fc35eChris Lattner void ReplaceAllUsesWith(SDNode *From, SDNode *To, 862f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 863475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesWith(SDNode *From, const SDValue *To, 864f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 865fae9f1cb34d6d2c4dbd007f2d748a70b67776a82Evan Cheng 86680274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner /// ReplaceAllUsesOfValueWith - Replace any uses of From with To, leaving 867f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner /// uses of other values produced by From.Val alone. 868475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesOfValueWith(SDValue From, SDValue To, 869f8dc0617baceeba8ccd67c8881eb88eb1be2902cChris Lattner DAGUpdateListener *UpdateListener = 0); 87080274268b99e5a066825c8cc5aba58dbc5ad0a52Chris Lattner 871e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// ReplaceAllUsesOfValuesWith - Like ReplaceAllUsesOfValueWith, but 872e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// for multiple values at once. This correctly handles the case where 873e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman /// there is an overlap between the From values and the To values. 874475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ReplaceAllUsesOfValuesWith(const SDValue *From, const SDValue *To, 875e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman unsigned Num, 876e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman DAGUpdateListener *UpdateListener = 0); 877e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman 878f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// AssignTopologicalOrder - Topological-sort the AllNodes list and a 879f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// assign a unique node id for each node in the DAG based on their 880f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman /// topological order. Returns the number of nodes. 881f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman unsigned AssignTopologicalOrder(); 882e6f35d8a5cc92d776cf460200e2b815e8c301b14Evan Cheng 8838be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// RepositionNode - Move node N in the AllNodes list to be immediately 8848be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// before the given iterator Position. This may be used to update the 8858be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman /// topological ordering when the list of nodes is modified. 8868be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman void RepositionNode(allnodes_iterator Position, SDNode *N) { 8878be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman AllNodes.insert(Position, AllNodes.remove(N)); 8888be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman } 8898be6bbe5bfd50945ac6c5542e0f54a0924a5db8dDan Gohman 8901efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// isCommutativeBinOp - Returns true if the opcode is a commutative binary 8911efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng /// operation. 8921efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng static bool isCommutativeBinOp(unsigned Opcode) { 8934ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // FIXME: This should get its info from the td file, so that we can include 8944ae9e0c5301126d7f2d4b2975eb86ed21f7b574dChris Lattner // target info. 8951efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng switch (Opcode) { 8961efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADD: 8971efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MUL: 8981efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHU: 8991efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::MULHS: 900b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::SMUL_LOHI: 901b6c7437568f0472548ede2710458f52cfad4532eDan Gohman case ISD::UMUL_LOHI: 9021efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FADD: 9031efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::FMUL: 9041efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::AND: 9051efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::OR: 9061efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::XOR: 90756e04a80b3cbd348aaf8f1828ed28fb4a9de2312Dan Gohman case ISD::SADDO: 90856e04a80b3cbd348aaf8f1828ed28fb4a9de2312Dan Gohman case ISD::UADDO: 909fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel case ISD::ADDC: 9101efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng case ISD::ADDE: return true; 9111efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng default: return false; 9121efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 9131efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng } 9141efba0ecb4d0b3807c48e6e0f74e3ce5c9fad809Evan Cheng 915b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendling /// AssignOrdering - Assign an order to the SDNode. 9164533cac557cdcc13e7c990942758ec8338d9172aBill Wendling void AssignOrdering(const SDNode *SD, unsigned Order); 917b4e6a5df5dada0cd919cc6e2717eb3118db9cc45Bill Wendling 9180777e927214c61c5d681e5b7dd5d00665c81133aBill Wendling /// GetOrdering - Get the order for the SDNode. 9190777e927214c61c5d681e5b7dd5d00665c81133aBill Wendling unsigned GetOrdering(const SDNode *SD) const; 9200777e927214c61c5d681e5b7dd5d00665c81133aBill Wendling 921bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng /// AddDbgValue - Add a dbg_value SDNode. If SD is non-null that means the 922bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng /// value is produced by SD. 923fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen void AddDbgValue(SDDbgValue *DB, SDNode *SD, bool isParameter); 924bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 925bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng /// GetDbgValues - Get the debug values which reference the given SDNode. 92622a54c1cd711afccd4558374918d12a939e1cca5Benjamin Kramer ArrayRef<SDDbgValue*> GetDbgValues(const SDNode* SD) { 927bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng return DbgInfo->getSDDbgValues(SD); 928bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng } 9296154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson 930a2e868d34ccfed46310e98338ded6a74b2b01308Devang Patel /// TransferDbgValues - Transfer SDDbgValues. 931a2e868d34ccfed46310e98338ded6a74b2b01308Devang Patel void TransferDbgValues(SDValue From, SDValue To); 932bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 933bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng /// hasDebugValues - Return true if there are any SDDbgValue nodes associated 934bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng /// with this SelectionDAG. 935bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng bool hasDebugValues() const { return !DbgInfo->empty(); } 936bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 937bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng SDDbgInfo::DbgIterator DbgBegin() { return DbgInfo->DbgBegin(); } 938bfcb3051899b7141a946d769fcf6e8a8453bc530Evan Cheng SDDbgInfo::DbgIterator DbgEnd() { return DbgInfo->DbgEnd(); } 9396154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson SDDbgInfo::DbgIterator ByvalParmDbgBegin() { 9406154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson return DbgInfo->ByvalParmDbgBegin(); 941fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen } 9426154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson SDDbgInfo::DbgIterator ByvalParmDbgEnd() { 9436154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson return DbgInfo->ByvalParmDbgEnd(); 944fdb42fa5fe794cc2c89e2ed7f57a89ed24d9952aDale Johannesen } 945bfdf7f38523bd38ae0538861a2bfd8bdc46e5c33Dale Johannesen 946cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner void dump() const; 947d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattner 94837ce9df0da6cddc3b8bfef9b63d33d058a0f2f15Chris Lattner /// CreateStackTemporary - Create a stack temporary, suitable for holding the 949364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang /// specified value type. If minAlign is specified, the slot size will have 950364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang /// at least that alignment. 951e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue CreateStackTemporary(EVT VT, unsigned minAlign = 1); 95247d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 95347d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands /// CreateStackTemporary - Create a stack temporary suitable for holding 95447d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands /// either of the specified value types. 955e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue CreateStackTemporary(EVT VT1, EVT VT2); 95647d9dcc584cdb7fd645ca1d5c2a0ce363570aeb7Duncan Sands 957fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// FoldConstantArithmetic - 958f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling SDValue FoldConstantArithmetic(unsigned Opcode, 959e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT, 960f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling ConstantSDNode *Cst1, 961f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling ConstantSDNode *Cst2); 962f3cbca279db891403659208a99f8e1cceb8c9ea6Bill Wendling 96351dabfb28375be7bc5848806ae31cd068b6133f8Chris Lattner /// FoldSetCC - Constant fold a setcc to true or false. 964e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue FoldSetCC(EVT VT, SDValue N1, 965ff97d4fe81ef0dcee9fe490bed8ab08e40251905Dale Johannesen SDValue N2, ISD::CondCode Cond, DebugLoc dl); 966fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 9672e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// SignBitIsZero - Return true if the sign bit of Op is known to be zero. We 9682e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman /// use this predicate to simplify operations downstream. 969475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool SignBitIsZero(SDValue Op, unsigned Depth = 0) const; 9702e68b6f52d0979575b2f02ed29717d907ba0684cDan Gohman 971ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// MaskedValueIsZero - Return true if 'Op & Mask' is known to be zero. We 972ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// use this predicate to simplify operations downstream. Op and Mask are 973ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be the same type. 974475871a144eb604ddaf37503397ba0941442e5fbDan Gohman bool MaskedValueIsZero(SDValue Op, const APInt &Mask, unsigned Depth = 0) 975ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman const; 976fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 977ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeMaskedBits - Determine which of the bits specified in Mask are 978ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// known to be either zero or one and return them in the KnownZero/KnownOne 979ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// bitsets. This code only analyzes bits in Mask, in order to short-circuit 980fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// processing. Targets can implement the computeMaskedBitsForTargetNode 981ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// method in the TargetLowering class to allow target nodes to be understood. 982475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void ComputeMaskedBits(SDValue Op, const APInt &Mask, APInt &KnownZero, 983fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman APInt &KnownOne, unsigned Depth = 0) const; 984fd29e0eb060ea8b4d490860329234d2ae5f5952eDan Gohman 985ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// ComputeNumSignBits - Return the number of times the sign bit of the 986ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// register is replicated into the other bits. We know that at least 1 bit 987ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// is always equal to the sign bit (itself), but other cases can give us 988ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// information. For example, immediately after an "SRA X, 2", we know that 989ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// the top 3 bits are all equal to each other, so we return 3. Targets can 990ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// implement the ComputeNumSignBitsForTarget method in the TargetLowering 991ea859be53ca13a1547c4675549946b74dc3c6f41Dan Gohman /// class to allow target nodes to be understood. 992475871a144eb604ddaf37503397ba0941442e5fbDan Gohman unsigned ComputeNumSignBits(SDValue Op, unsigned Depth = 0) const; 993a844bdeab31ef04221e7ef59a8467893584cc14dEvan Cheng 994a18da59d4028a2e3f5751294e5f487281649299cChris Lattner /// isBaseWithConstantOffset - Return true if the specified operand is an 995a18da59d4028a2e3f5751294e5f487281649299cChris Lattner /// ISD::ADD with a ConstantSDNode on the right-hand side, or if it is an 996a18da59d4028a2e3f5751294e5f487281649299cChris Lattner /// ISD::OR with a ConstantSDNode that is guaranteed to have the same 997a18da59d4028a2e3f5751294e5f487281649299cChris Lattner /// semantics as an ADD. This handles the equivalence: 998463b3c2a9974acf7586d1e6a4416aa7cc004ff0eChris Lattner /// X|Cst == X+Cst iff X&Cst = 0. 999a18da59d4028a2e3f5751294e5f487281649299cChris Lattner bool isBaseWithConstantOffset(SDValue Op) const; 10006154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson 10018d44b28bc6f615b9ad79b066987d53b1ea2a2942Dan Gohman /// isKnownNeverNan - Test whether the given SDValue is known to never be NaN. 10028d44b28bc6f615b9ad79b066987d53b1ea2a2942Dan Gohman bool isKnownNeverNaN(SDValue Op) const; 10038d44b28bc6f615b9ad79b066987d53b1ea2a2942Dan Gohman 1004e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman /// isKnownNeverZero - Test whether the given SDValue is known to never be 1005e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman /// positive or negative Zero. 1006e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman bool isKnownNeverZero(SDValue Op) const; 1007e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman 1008e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman /// isEqualTo - Test whether two SDValues are known to compare equal. This 1009e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman /// is true if they are the same value, or if one is negative zero and the 1010e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman /// other positive zero. 1011e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman bool isEqualTo(SDValue A, SDValue B) const; 1012e832693acbfc713bcaf44720efa8149e93a38027Dan Gohman 1013cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// UnrollVectorOp - Utility function used by legalize and lowering to 1014cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// "unroll" a vector operation by splitting out the scalars and operating 1015cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// on each element individually. If the ResNE is 0, fully unroll the vector 1016cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// op. If ResNE is less than the width of the vector op, unroll up to ResNE. 1017cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// If the ResNE is greater than the width of the vector op, unroll the 1018cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang /// vector op and fill the end of the resulting vector with UNDEFS. 1019cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang SDValue UnrollVectorOp(SDNode *N, unsigned ResNE = 0); 1020cd6e725f21852e2f8cdf5fd0e65eb42c224776f8Mon P Wang 10216154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson /// isConsecutiveLoad - Return true if LD is loading 'Bytes' bytes from a 10226154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson /// location that is 'Dist' units away from the location that the 'Base' load 102364fa4a9584113f63eccc1a650e7e0cc4ddbab3f6Evan Cheng /// is loading from. 102464fa4a9584113f63eccc1a650e7e0cc4ddbab3f6Evan Cheng bool isConsecutiveLoad(LoadSDNode *LD, LoadSDNode *Base, 102564fa4a9584113f63eccc1a650e7e0cc4ddbab3f6Evan Cheng unsigned Bytes, int Dist) const; 102664fa4a9584113f63eccc1a650e7e0cc4ddbab3f6Evan Cheng 1027f2dc5c785dea1816cbc064b58b4b6ea23c4fd7d4Evan Cheng /// InferPtrAlignment - Infer alignment of a load / store address. Return 0 if 1028f2dc5c785dea1816cbc064b58b4b6ea23c4fd7d4Evan Cheng /// it cannot be inferred. 10297ced2e0b304e76ab746c7d9a54ad8d4930445a38Evan Cheng unsigned InferPtrAlignment(SDValue Ptr) const; 1030f2dc5c785dea1816cbc064b58b4b6ea23c4fd7d4Evan Cheng 1031d1fc96499b7619356c7542200d32da898b79f7c1Chris Lattnerprivate: 1032095cc29f321382e1f7d295e262a28197f92c5491Dan Gohman bool RemoveNodeFromCSEMaps(SDNode *N); 1033399461095b033438d1f5863cd0d6f82a616f74dcDan Gohman void AddModifiedNodeToCSEMaps(SDNode *N, DAGUpdateListener *UpdateListener); 1034475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, SDValue Op, void *&InsertPos); 1035475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, SDValue Op1, SDValue Op2, 1036a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 1037475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDNode *FindModifiedNodeSlot(SDNode *N, const SDValue *Ops, unsigned NumOps, 1038a5682853b9921bbb0dd2ee175c9bd44142d4819eChris Lattner void *&InsertPos); 10390508d047fefef36d4f943ee13c82c18cf3a943abDevang Patel SDNode *UpdadeDebugLocOnMergedSDNode(SDNode *N, DebugLoc loc); 1040b9aff659e82e4ec1a507e6e7fe7969379a431613Chris Lattner 1041fde3f3061d665babeb78443119a09876098fc35eChris Lattner void DeleteNodeNotInCSEMaps(SDNode *N); 1042c53361294957b63a9c1e405256c6f0a81db1685cDan Gohman void DeallocateNode(SDNode *N); 10439c6e70eca9a49c146b26621cbcbb9464ceeac024Dan Gohman 1044e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson unsigned getEVTAlignment(EVT MemoryVT) const; 1045f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman 1046f350b277f32d7d47f86c0e54f4aec4d470500618Dan Gohman void allnodes_clear(); 1047fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1048101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// VTList - List of non-single value types. 1049e8be6c63915e0389f1eef6b53c64300d13b2ce99Dan Gohman std::vector<SDVTList> VTList; 1050fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1051101a90f3d3c3ad9159676ba744b59b3a9d0b4af5Dan Gohman /// CondCodeNodes - Maps to auto-CSE operations. 10527cf7e3f33f25544d08492d47cc8a1cbba25dc8d7Chris Lattner std::vector<CondCodeSDNode*> CondCodeNodes; 10531cff05c7c216eea0e9173738c2a60b70c2b3c013Chris Lattner 105415e4b01920d6a0ffbe35d3e5aa88a4b42970b6a7Chris Lattner std::vector<SDNode*> ValueTypeNodes; 1055e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson std::map<EVT, SDNode*, EVT::compareRawBits> ExtendedValueTypeNodes; 1056056292fd738924f3f7703725d8f630983794b5a5Bill Wendling StringMap<SDNode*> ExternalSymbols; 10576154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson 10581af2231da64a14d638406d133c7912bfc1c8a9ceChris Lattner std::map<std::pair<std::string, unsigned char>,SDNode*> TargetExternalSymbols; 1059cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner}; 1060cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 10611080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattnertemplate <> struct GraphTraits<SelectionDAG*> : public GraphTraits<SDNode*> { 10621080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner typedef SelectionDAG::allnodes_iterator nodes_iterator; 10631080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_begin(SelectionDAG *G) { 10641080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_begin(); 10651080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 10661080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner static nodes_iterator nodes_end(SelectionDAG *G) { 10671080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner return G->allnodes_end(); 10681080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner } 10691080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner}; 10701080b9ee534579c67f7c99364cc6fa11edbcd919Chris Lattner 1071b80e2be8894db9f843f32ebaffb9b7fd6b57d206Chris Lattner} // end namespace llvm 1072cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner 1073cacf462915344c2af25eef1af1f3ee2c7280ff56Chris Lattner#endif 1074