mirror of
https://github.com/c64scene-ar/llvm-6502.git
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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
49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
//===-- AllocaHoisting.cpp - Hoist allocas to the entry block --*- C++ -*-===//
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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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// Hoist the alloca instructions in the non-entry blocks to the entry blocks.
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//
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//===----------------------------------------------------------------------===//
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#include "NVPTXAllocaHoisting.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/Instructions.h"
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namespace llvm {
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bool NVPTXAllocaHoisting::runOnFunction(Function &function) {
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bool functionModified = false;
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Function::iterator I = function.begin();
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TerminatorInst *firstTerminatorInst = (I++)->getTerminator();
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for (Function::iterator E = function.end(); I != E; ++I) {
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for (BasicBlock::iterator BI = I->begin(), BE = I->end(); BI != BE;) {
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AllocaInst *allocaInst = dyn_cast<AllocaInst>(BI++);
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if (allocaInst && isa<ConstantInt>(allocaInst->getArraySize())) {
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allocaInst->moveBefore(firstTerminatorInst);
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functionModified = true;
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}
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}
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}
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return functionModified;
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}
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char NVPTXAllocaHoisting::ID = 1;
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RegisterPass<NVPTXAllocaHoisting> X("alloca-hoisting",
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"Hoisting alloca instructions in non-entry "
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"blocks to the entry block");
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FunctionPass *createAllocaHoisting() {
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return new NVPTXAllocaHoisting();
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}
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} // end namespace llvm
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