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a490793037
Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] llvm-svn: 169131
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/Function.h"
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#include "llvm/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.getParamAttributes(Idx).hasAttribute(Attributes::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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