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https://github.com/c64scene-ar/llvm-6502.git
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Use the intrinsic lowering functionality
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10626 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
parent
09c692bcef
commit
f8742b3e03
@ -14,11 +14,14 @@
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/InstrSelection.h"
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#include "llvm/Function.h"
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#include "llvm/Intrinsics.h"
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#include "llvm/IntrinsicLowering.h"
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#include "llvm/iPHINode.h"
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#include "llvm/iOther.h"
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#include "llvm/Pass.h"
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#include "llvm/CodeGen/InstrForest.h"
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#include "llvm/CodeGen/InstrSelection.h"
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#include "llvm/CodeGen/InstrSelectionSupport.h"
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#include "llvm/CodeGen/MachineCodeForInstruction.h"
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#include "llvm/CodeGen/MachineFunction.h"
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@ -26,13 +29,12 @@
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#include "llvm/Target/TargetRegInfo.h"
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#include "Support/CommandLine.h"
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#include "Support/LeakDetector.h"
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#include <vector>
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namespace llvm {
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std::vector<MachineInstr*>
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FixConstantOperandsForInstr(Instruction* vmInstr, MachineInstr* minstr,
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TargetMachine& target);
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std::vector<MachineInstr*>
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FixConstantOperandsForInstr(Instruction *I, MachineInstr *MI,
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TargetMachine &TM);
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}
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namespace {
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//===--------------------------------------------------------------------===//
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@ -66,6 +68,7 @@ namespace {
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//
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class InstructionSelection : public FunctionPass {
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TargetMachine &Target;
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IntrinsicLowering &IL;
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void InsertCodeForPhis(Function &F);
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void InsertPhiElimInstructions(BasicBlock *BB,
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const std::vector<MachineInstr*>& CpVec);
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@ -73,7 +76,8 @@ namespace {
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void PostprocessMachineCodeForTree(InstructionNode* instrNode,
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int ruleForNode, short* nts);
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public:
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InstructionSelection(TargetMachine &T) : Target(T) {}
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InstructionSelection(TargetMachine &TM, IntrinsicLowering &il)
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: Target(TM), IL(il) {}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesCFG();
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@ -84,7 +88,6 @@ namespace {
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};
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}
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namespace llvm {
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TmpInstruction::TmpInstruction(MachineCodeForInstruction& mcfi,
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Value *s1, Value *s2, const std::string &name)
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@ -118,10 +121,37 @@ TmpInstruction::TmpInstruction(MachineCodeForInstruction& mcfi,
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LeakDetector::removeGarbageObject(this);
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}
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} // End llvm namespace
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bool InstructionSelection::runOnFunction(Function &F) {
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// First pass - Walk the function, lowering any calls to intrinsic functions
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// which the instruction selector cannot handle.
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for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
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for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; )
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if (CallInst *CI = dyn_cast<CallInst>(I++))
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if (Function *F = CI->getCalledFunction())
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switch (F->getIntrinsicID()) {
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#undef va_start
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#undef va_copy
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#undef va_end
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case Intrinsic::va_start:
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case Intrinsic::va_copy:
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case Intrinsic::va_end:
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// We directly implement these intrinsics. Note that this knowledge
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// is incestuously entangled with the code in
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// SparcInstrSelection.cpp and must be updated when it is updated.
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// Since ALL of the code in this library is incestuously intertwined
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// with it already and sparc specific, we will live with this.
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break;
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default:
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// All other intrinsic calls we must lower.
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Instruction *Before = CI->getPrev();
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IL.LowerIntrinsicCall(CI);
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if (Before) { // Move iterator to instruction after call
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I = Before; ++I;
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} else {
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I = BB->begin();
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}
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}
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bool InstructionSelection::runOnFunction(Function &F)
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{
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//
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// Build the instruction trees to be given as inputs to BURG.
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//
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@ -384,8 +414,7 @@ InstructionSelection::PostprocessMachineCodeForTree(InstructionNode* instrNode,
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// createInstructionSelectionPass - Public entrypoint for instruction selection
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// and this file as a whole...
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//
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FunctionPass *createInstructionSelectionPass(TargetMachine &T) {
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return new InstructionSelection(T);
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FunctionPass *llvm::createInstructionSelectionPass(TargetMachine &T,
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IntrinsicLowering &IL) {
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return new InstructionSelection(T, IL);
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}
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} // End llvm namespace
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@ -14,11 +14,14 @@
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/InstrSelection.h"
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#include "llvm/Function.h"
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#include "llvm/Intrinsics.h"
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#include "llvm/IntrinsicLowering.h"
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#include "llvm/iPHINode.h"
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#include "llvm/iOther.h"
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#include "llvm/Pass.h"
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#include "llvm/CodeGen/InstrForest.h"
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#include "llvm/CodeGen/InstrSelection.h"
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#include "llvm/CodeGen/InstrSelectionSupport.h"
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#include "llvm/CodeGen/MachineCodeForInstruction.h"
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#include "llvm/CodeGen/MachineFunction.h"
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@ -26,13 +29,12 @@
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#include "llvm/Target/TargetRegInfo.h"
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#include "Support/CommandLine.h"
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#include "Support/LeakDetector.h"
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#include <vector>
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namespace llvm {
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std::vector<MachineInstr*>
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FixConstantOperandsForInstr(Instruction* vmInstr, MachineInstr* minstr,
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TargetMachine& target);
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std::vector<MachineInstr*>
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FixConstantOperandsForInstr(Instruction *I, MachineInstr *MI,
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TargetMachine &TM);
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}
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namespace {
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//===--------------------------------------------------------------------===//
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@ -66,6 +68,7 @@ namespace {
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//
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class InstructionSelection : public FunctionPass {
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TargetMachine &Target;
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IntrinsicLowering &IL;
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void InsertCodeForPhis(Function &F);
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void InsertPhiElimInstructions(BasicBlock *BB,
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const std::vector<MachineInstr*>& CpVec);
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@ -73,7 +76,8 @@ namespace {
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void PostprocessMachineCodeForTree(InstructionNode* instrNode,
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int ruleForNode, short* nts);
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public:
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InstructionSelection(TargetMachine &T) : Target(T) {}
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InstructionSelection(TargetMachine &TM, IntrinsicLowering &il)
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: Target(TM), IL(il) {}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesCFG();
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@ -84,7 +88,6 @@ namespace {
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};
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}
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namespace llvm {
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TmpInstruction::TmpInstruction(MachineCodeForInstruction& mcfi,
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Value *s1, Value *s2, const std::string &name)
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@ -118,10 +121,37 @@ TmpInstruction::TmpInstruction(MachineCodeForInstruction& mcfi,
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LeakDetector::removeGarbageObject(this);
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}
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} // End llvm namespace
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bool InstructionSelection::runOnFunction(Function &F) {
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// First pass - Walk the function, lowering any calls to intrinsic functions
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// which the instruction selector cannot handle.
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for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
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for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; )
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if (CallInst *CI = dyn_cast<CallInst>(I++))
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if (Function *F = CI->getCalledFunction())
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switch (F->getIntrinsicID()) {
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#undef va_start
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#undef va_copy
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#undef va_end
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case Intrinsic::va_start:
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case Intrinsic::va_copy:
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case Intrinsic::va_end:
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// We directly implement these intrinsics. Note that this knowledge
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// is incestuously entangled with the code in
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// SparcInstrSelection.cpp and must be updated when it is updated.
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// Since ALL of the code in this library is incestuously intertwined
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// with it already and sparc specific, we will live with this.
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break;
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default:
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// All other intrinsic calls we must lower.
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Instruction *Before = CI->getPrev();
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IL.LowerIntrinsicCall(CI);
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if (Before) { // Move iterator to instruction after call
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I = Before; ++I;
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} else {
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I = BB->begin();
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}
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}
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bool InstructionSelection::runOnFunction(Function &F)
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{
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//
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// Build the instruction trees to be given as inputs to BURG.
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//
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@ -384,8 +414,7 @@ InstructionSelection::PostprocessMachineCodeForTree(InstructionNode* instrNode,
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// createInstructionSelectionPass - Public entrypoint for instruction selection
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// and this file as a whole...
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//
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FunctionPass *createInstructionSelectionPass(TargetMachine &T) {
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return new InstructionSelection(T);
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FunctionPass *llvm::createInstructionSelectionPass(TargetMachine &T,
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IntrinsicLowering &IL) {
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return new InstructionSelection(T, IL);
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}
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} // End llvm namespace
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