mirror of
https://github.com/c64scene-ar/llvm-6502.git
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0b8c9a80f2
into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
//===- HexagonRemoveExtendArgs.cpp - Remove unnecessary argument sign extends //
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Pass that removes sign extends for function parameters. These parameters
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// are already sign extended by the caller per Hexagon's ABI
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//
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//===----------------------------------------------------------------------===//
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#include "Hexagon.h"
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#include "HexagonTargetMachine.h"
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#include "llvm/CodeGen/MachineFunctionAnalysis.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/Pass.h"
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#include "llvm/Transforms/Scalar.h"
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using namespace llvm;
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namespace {
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struct HexagonRemoveExtendArgs : public FunctionPass {
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public:
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static char ID;
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HexagonRemoveExtendArgs() : FunctionPass(ID) {}
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virtual bool runOnFunction(Function &F);
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const char *getPassName() const {
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return "Remove sign extends";
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}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequired<MachineFunctionAnalysis>();
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AU.addPreserved<MachineFunctionAnalysis>();
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FunctionPass::getAnalysisUsage(AU);
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}
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};
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}
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char HexagonRemoveExtendArgs::ID = 0;
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RegisterPass<HexagonRemoveExtendArgs> X("reargs",
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"Remove Sign and Zero Extends for Args"
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);
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bool HexagonRemoveExtendArgs::runOnFunction(Function &F) {
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unsigned Idx = 1;
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for (Function::arg_iterator AI = F.arg_begin(), AE = F.arg_end(); AI != AE;
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++AI, ++Idx) {
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if (F.getAttributes().hasAttribute(Idx, Attribute::SExt)) {
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Argument* Arg = AI;
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if (!isa<PointerType>(Arg->getType())) {
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for (Instruction::use_iterator UI = Arg->use_begin();
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UI != Arg->use_end();) {
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if (isa<SExtInst>(*UI)) {
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Instruction* Use = cast<Instruction>(*UI);
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SExtInst* SI = new SExtInst(Arg, Use->getType());
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assert (EVT::getEVT(SI->getType()) ==
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(EVT::getEVT(Use->getType())));
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++UI;
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Use->replaceAllUsesWith(SI);
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Instruction* First = F.getEntryBlock().begin();
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SI->insertBefore(First);
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Use->eraseFromParent();
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} else {
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++UI;
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}
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}
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}
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}
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}
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return true;
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}
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FunctionPass *llvm::createHexagonRemoveExtendOps(HexagonTargetMachine &TM) {
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return new HexagonRemoveExtendArgs();
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}
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