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replace 'break's with 'return 0' in visitCallInst code for objectsize, since there is no need to fallback to visitCallSite.

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This gives a 0.9% in a test case

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156069 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nuno Lopes 2012-05-03 16:06:07 +00:00
parent 28d95b0a04
commit a199e01d8e
1 changed files with 5 additions and 5 deletions
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10
lib/Transforms/InstCombine/InstCombineCalls.cpp
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@ -247,7 +247,7 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
default: break; default: break;
case Intrinsic::objectsize: { case Intrinsic::objectsize: {
// We need target data for just about everything so depend on it. // We need target data for just about everything so depend on it.
if (!TD) break; if (!TD) return 0;
Type *ReturnTy = CI.getType(); Type *ReturnTy = CI.getType();
uint64_t DontKnow = II->getArgOperand(1) == Builder->getTrue() ? 0 : -1ULL; uint64_t DontKnow = II->getArgOperand(1) == Builder->getTrue() ? 0 : -1ULL;
@ -260,7 +260,7 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
// Try to look through constant GEPs. // Try to look through constant GEPs.
if (GEPOperator *GEP = dyn_cast<GEPOperator>(Op1)) { if (GEPOperator *GEP = dyn_cast<GEPOperator>(Op1)) {
if (!GEP->hasAllConstantIndices()) break; if (!GEP->hasAllConstantIndices()) return 0;
// Get the current byte offset into the thing. Use the original // Get the current byte offset into the thing. Use the original
// operand in case we're looking through a bitcast. // operand in case we're looking through a bitcast.
@ -274,7 +274,7 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
// Make sure we're not a constant offset from an external // Make sure we're not a constant offset from an external
// global. // global.
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(Op1)) if (GlobalVariable *GV = dyn_cast<GlobalVariable>(Op1))
if (!GV->hasDefinitiveInitializer()) break; if (!GV->hasDefinitiveInitializer()) return 0;
} }
// If we've stripped down to a single global variable that we // If we've stripped down to a single global variable that we
@ -294,7 +294,7 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
Size = TD->getTypeAllocSize(AI->getAllocatedType()); Size = TD->getTypeAllocSize(AI->getAllocatedType());
if (AI->isArrayAllocation()) { if (AI->isArrayAllocation()) {
const ConstantInt *C = dyn_cast<ConstantInt>(AI->getArraySize()); const ConstantInt *C = dyn_cast<ConstantInt>(AI->getArraySize());
if (!C) break; if (!C) return 0;
Size *= C->getZExtValue(); Size *= C->getZExtValue();
} }
} }
@ -310,7 +310,7 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
// Do not return "I don't know" here. Later optimization passes could // Do not return "I don't know" here. Later optimization passes could
// make it possible to evaluate objectsize to a constant. // make it possible to evaluate objectsize to a constant.
if (Size == -1ULL) if (Size == -1ULL)
break; return 0;
if (Size < Offset) { if (Size < Offset) {
// Out of bound reference? Negative index normalized to large // Out of bound reference? Negative index normalized to large