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Simplify the interface to local DCE and Constant prop

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2749 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-05-26 20:18:18 +00:00
parent 9e77f77687
commit 16da494c81
4 changed files with 9 additions and 9 deletions
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12
lib/Transforms/Utils/Local.cpp
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@ -16,14 +16,14 @@
// ConstantFoldInstruction - If an instruction references constants, try to fold
// them together...
//
bool doConstantPropogation(BasicBlock *BB, BasicBlock::iterator &II) {
bool doConstantPropogation(BasicBlock::iterator &II) {
Instruction *Inst = *II;
if (Constant *C = ConstantFoldInstruction(Inst)) {
// Replaces all of the uses of a variable with uses of the constant.
Inst->replaceAllUsesWith(C);
// Remove the instruction from the basic block...
delete BB->getInstList().remove(II);
delete Inst->getParent()->getInstList().remove(II);
return true;
}
@ -100,11 +100,11 @@ bool isInstructionTriviallyDead(Instruction *I) {
// to point to the instruction that immediately succeeded the original
// instruction.
//
bool dceInstruction(BasicBlock::InstListType &BBIL,
BasicBlock::iterator &BBI) {
bool dceInstruction(BasicBlock::iterator &BBI) {
// Look for un"used" definitions...
if (isInstructionTriviallyDead(*BBI)) {
delete BBIL.remove(BBI); // Bye bye
Instruction *I = *BBI;
if (isInstructionTriviallyDead(I)) {
delete I->getParent()->getInstList().remove(BBI); // Bye bye
return true;
}
return false;