diff options
Diffstat (limited to 'lib/Target/NVPTX/NVPTXSplitBBatBar.cpp')
-rw-r--r-- | lib/Target/NVPTX/NVPTXSplitBBatBar.cpp | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/lib/Target/NVPTX/NVPTXSplitBBatBar.cpp b/lib/Target/NVPTX/NVPTXSplitBBatBar.cpp deleted file mode 100644 index d4a778ca11..0000000000 --- a/lib/Target/NVPTX/NVPTXSplitBBatBar.cpp +++ /dev/null @@ -1,73 +0,0 @@ -//===- NVPTXSplitBBatBar.cpp - Split BB at Barrier --*- C++ -*--===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// Split basic blocks so that a basic block that contains a barrier instruction -// only contains the barrier instruction. -// -//===----------------------------------------------------------------------===// - -#include "NVPTXSplitBBatBar.h" -#include "NVPTXUtilities.h" -#include "llvm/IR/Function.h" -#include "llvm/IR/InstIterator.h" -#include "llvm/IR/Instructions.h" -#include "llvm/IR/IntrinsicInst.h" -#include "llvm/IR/Intrinsics.h" - -using namespace llvm; - -namespace llvm { FunctionPass *createSplitBBatBarPass(); } - -char NVPTXSplitBBatBar::ID = 0; - -bool NVPTXSplitBBatBar::runOnFunction(Function &F) { - - SmallVector<Instruction *, 4> SplitPoints; - bool changed = false; - - // Collect all the split points in SplitPoints - for (Function::iterator BI = F.begin(), BE = F.end(); BI != BE; ++BI) { - BasicBlock::iterator IB = BI->begin(); - BasicBlock::iterator II = IB; - BasicBlock::iterator IE = BI->end(); - - // Skit the first instruction. No splitting is needed at this - // point even if this is a bar. - while (II != IE) { - if (IntrinsicInst *inst = dyn_cast<IntrinsicInst>(II)) { - Intrinsic::ID id = inst->getIntrinsicID(); - // If this is a barrier, split at this instruction - // and the next instruction. - if (llvm::isBarrierIntrinsic(id)) { - if (II != IB) - SplitPoints.push_back(II); - II++; - if ((II != IE) && (!II->isTerminator())) { - SplitPoints.push_back(II); - II++; - } - continue; - } - } - II++; - } - } - - for (unsigned i = 0; i != SplitPoints.size(); i++) { - changed = true; - Instruction *inst = SplitPoints[i]; - inst->getParent()->splitBasicBlock(inst, "bar_split"); - } - - return changed; -} - -// This interface will most likely not be necessary, because this pass will -// not be invoked by the driver, but will be used as a prerequisite to -// another pass. -FunctionPass *llvm::createSplitBBatBarPass() { return new NVPTXSplitBBatBar(); } |