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Remove trailing whitespace

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21427 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman
2005-04-21 23:48:37 +00:00
parent 0e0a7a45d3
commit fd93908ae8
126 changed files with 1880 additions and 1880 deletions
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52
lib/Transforms/Scalar/LICM.cpp
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@@ -1,10 +1,10 @@
//===-- LICM.cpp - Loop Invariant Code Motion Pass ------------------------===//
//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//
//===----------------------------------------------------------------------===//
//
// This pass performs loop invariant code motion, attempting to remove as much
@@ -89,7 +89,7 @@ namespace {
Loop *CurLoop; // The current loop we are working on...
AliasSetTracker *CurAST; // AliasSet information for the current loop...
/// visitLoop - Hoist expressions out of the specified loop...
/// visitLoop - Hoist expressions out of the specified loop...
///
void visitLoop(Loop *L, AliasSetTracker &AST);
@@ -131,21 +131,21 @@ namespace {
BasicBlock *LoopHeader = CurLoop->getHeader();
if (BlockInLoop == LoopHeader)
return true;
DominatorTree::Node *BlockInLoopNode = DT->getNode(BlockInLoop);
DominatorTree::Node *IDom = DT->getNode(ExitBlock);
// Because the exit block is not in the loop, we know we have to get _at
// least_ its immediate dominator.
do {
// Get next Immediate Dominator.
IDom = IDom->getIDom();
// If we have got to the header of the loop, then the instructions block
// did not dominate the exit node, so we can't hoist it.
if (IDom->getBlock() == LoopHeader)
return false;
} while (IDom != BlockInLoopNode);
return true;
@@ -170,7 +170,7 @@ namespace {
/// pointerInvalidatedByLoop - Return true if the body of this loop may
/// store into the memory location pointed to by V.
///
///
bool pointerInvalidatedByLoop(Value *V, unsigned Size) {
// Check to see if any of the basic blocks in CurLoop invalidate *V.
return CurAST->getAliasSetForPointer(V, Size).isMod();
@@ -222,7 +222,7 @@ bool LICM::runOnFunction(Function &) {
}
/// visitLoop - Hoist expressions out of the specified loop...
/// visitLoop - Hoist expressions out of the specified loop...
///
void LICM::visitLoop(Loop *L, AliasSetTracker &AST) {
// Recurse through all subloops before we process this loop...
@@ -296,7 +296,7 @@ void LICM::SinkRegion(DominatorTree::Node *N) {
for (BasicBlock::iterator II = BB->end(); II != BB->begin(); ) {
Instruction &I = *--II;
// Check to see if we can sink this instruction to the exit blocks
// of the loop. We can do this if the all users of the instruction are
// outside of the loop. In this case, it doesn't even matter if the
@@ -327,12 +327,12 @@ void LICM::HoistRegion(DominatorTree::Node *N) {
if (!inSubLoop(BB))
for (BasicBlock::iterator II = BB->begin(), E = BB->end(); II != E; ) {
Instruction &I = *II++;
// Try hoisting the instruction out to the preheader. We can only do this
// if all of the operands of the instruction are loop invariant and if it
// is safe to hoist the instruction.
//
if (isLoopInvariantInst(I) && canSinkOrHoistInst(I) &&
if (isLoopInvariantInst(I) && canSinkOrHoistInst(I) &&
isSafeToExecuteUnconditionally(I))
hoist(I);
}
@@ -380,11 +380,11 @@ bool LICM::canSinkOrHoistInst(Instruction &I) {
// FIXME: This should use mod/ref information to see if we can hoist or sink
// the call.
return false;
}
return isa<BinaryOperator>(I) || isa<ShiftInst>(I) || isa<CastInst>(I) ||
return isa<BinaryOperator>(I) || isa<ShiftInst>(I) || isa<CastInst>(I) ||
isa<SelectInst>(I) ||
isa<GetElementPtrInst>(I) || isa<VANextInst>(I) || isa<VAArgInst>(I);
}
@@ -452,7 +452,7 @@ void LICM::sink(Instruction &I) {
// Move the instruction to the start of the exit block, after any PHI
// nodes in it.
I.getParent()->getInstList().remove(&I);
BasicBlock::iterator InsertPt = ExitBlocks[0]->begin();
while (isa<PHINode>(InsertPt)) ++InsertPt;
ExitBlocks[0]->getInstList().insert(InsertPt, &I);
@@ -472,7 +472,7 @@ void LICM::sink(Instruction &I) {
if (I.getType() != Type::VoidTy)
AI = new AllocaInst(I.getType(), 0, I.getName(),
I.getParent()->getParent()->front().begin());
// Secondly, insert load instructions for each use of the instruction
// outside of the loop.
while (!I.use_empty()) {
@@ -519,7 +519,7 @@ void LICM::sink(Instruction &I) {
// Insert the code after the last PHI node...
BasicBlock::iterator InsertPt = ExitBlock->begin();
while (isa<PHINode>(InsertPt)) ++InsertPt;
// If this is the first exit block processed, just move the original
// instruction, otherwise clone the original instruction and insert
// the copy.
@@ -535,7 +535,7 @@ void LICM::sink(Instruction &I) {
New->setName(I.getName()+".le");
ExitBlock->getInstList().insert(InsertPt, New);
}
// Now that we have inserted the instruction, store it into the alloca
if (AI) new StoreInst(New, AI, InsertPt);
}
@@ -547,7 +547,7 @@ void LICM::sink(Instruction &I) {
CurAST->deleteValue(&I);
I.getParent()->getInstList().erase(&I);
}
// Finally, promote the fine value to SSA form.
if (AI) {
std::vector<AllocaInst*> Allocas;
@@ -561,7 +561,7 @@ void LICM::sink(Instruction &I) {
/// that is safe to hoist, this instruction is called to do the dirty work.
///
void LICM::hoist(Instruction &I) {
DEBUG(std::cerr << "LICM hoisting to " << Preheader->getName()
DEBUG(std::cerr << "LICM hoisting to " << Preheader->getName()
<< ": " << I);
// Remove the instruction from its current basic block... but don't delete the
@@ -570,7 +570,7 @@ void LICM::hoist(Instruction &I) {
// Insert the new node in Preheader, before the terminator.
Preheader->getInstList().insert(Preheader->getTerminator(), &I);
if (isa<LoadInst>(I)) ++NumMovedLoads;
else if (isa<CallInst>(I)) ++NumMovedCalls;
++NumHoisted;
@@ -584,7 +584,7 @@ void LICM::hoist(Instruction &I) {
bool LICM::isSafeToExecuteUnconditionally(Instruction &Inst) {
// If it is not a trapping instruction, it is always safe to hoist.
if (!Inst.isTrapping()) return true;
// Otherwise we have to check to make sure that the instruction dominates all
// of the exit blocks. If it doesn't, then there is a path out of the loop
// which does not execute this instruction, so we can't hoist it.
@@ -610,7 +610,7 @@ bool LICM::isSafeToExecuteUnconditionally(Instruction &Inst) {
for (unsigned i = 0, e = ExitBlocks.size(); i != e; ++i)
if (!isExitBlockDominatedByBlockInLoop(ExitBlocks[i], Inst.getParent()))
return false;
return true;
}
@@ -672,7 +672,7 @@ void LICM::PromoteValuesInLoop() {
// Store into the temporary alloca.
new StoreInst(LI, PromotedValues[i].first, LoopPredInst);
}
// Scan the basic blocks in the loop, replacing uses of our pointers with
// uses of the allocas in question.
//
@@ -777,10 +777,10 @@ void LICM::FindPromotableValuesInLoop(
// Update the AST and alias analysis.
CurAST->copyValue(V, AI);
for (AliasSet::iterator I = AS.begin(), E = AS.end(); I != E; ++I)
ValueToAllocaMap.insert(std::make_pair(I->first, AI));
DEBUG(std::cerr << "LICM: Promoting value: " << *V << "\n");
}
}