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random code cleanups, no functionality change

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28914 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-06-26 19:10:05 +00:00
parent 2b67f07d2b
commit 3c80a51cfd
1 changed files with 8 additions and 9 deletions
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17
lib/Transforms/Scalar/LICM.cpp
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@ -335,7 +335,7 @@ void LICM::HoistRegion(DominatorTree::Node *N) {
//
if (isLoopInvariantInst(I) && canSinkOrHoistInst(I) &&
isSafeToExecuteUnconditionally(I))
hoist(I);
hoist(I);
}
const std::vector<DominatorTree::Node*> &Children = N->getChildren();
@ -386,8 +386,7 @@ bool LICM::canSinkOrHoistInst(Instruction &I) {
}
return isa<BinaryOperator>(I) || isa<ShiftInst>(I) || isa<CastInst>(I) ||
isa<SelectInst>(I) ||
isa<GetElementPtrInst>(I);
isa<SelectInst>(I) || isa<GetElementPtrInst>(I);
}
/// isNotUsedInLoop - Return true if the only users of this instruction are
@ -448,11 +447,11 @@ void LICM::sink(Instruction &I) {
if (!isExitBlockDominatedByBlockInLoop(ExitBlocks[0], I.getParent())) {
// Instruction is not used, just delete it.
CurAST->deleteValue(&I);
I.getParent()->getInstList().erase(&I);
I.eraseFromParent();
} else {
// Move the instruction to the start of the exit block, after any PHI
// nodes in it.
I.getParent()->getInstList().remove(&I);
I.removeFromParent();
BasicBlock::iterator InsertPt = ExitBlocks[0]->begin();
while (isa<PHINode>(InsertPt)) ++InsertPt;
@ -461,7 +460,7 @@ void LICM::sink(Instruction &I) {
} else if (ExitBlocks.size() == 0) {
// The instruction is actually dead if there ARE NO exit blocks.
CurAST->deleteValue(&I);
I.getParent()->getInstList().erase(&I);
I.eraseFromParent();
} else {
// Otherwise, if we have multiple exits, use the PromoteMem2Reg function to
// do all of the hard work of inserting PHI nodes as necessary. We convert
@ -526,7 +525,7 @@ void LICM::sink(Instruction &I) {
// the copy.
Instruction *New;
if (InsertedBlocks.size() == 1) {
I.getParent()->getInstList().remove(&I);
I.removeFromParent();
ExitBlock->getInstList().insert(InsertPt, &I);
New = &I;
} else {
@ -546,7 +545,7 @@ void LICM::sink(Instruction &I) {
// If the instruction doesn't dominate any exit blocks, it must be dead.
if (InsertedBlocks.empty()) {
CurAST->deleteValue(&I);
I.getParent()->getInstList().erase(&I);
I.eraseFromParent();
}
// Finally, promote the fine value to SSA form.
@ -567,7 +566,7 @@ void LICM::hoist(Instruction &I) {
// Remove the instruction from its current basic block... but don't delete the
// instruction.
I.getParent()->getInstList().remove(&I);
I.removeFromParent();
// Insert the new node in Preheader, before the terminator.
Preheader->getInstList().insert(Preheader->getTerminator(), &I);