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Fix the regression on Transforms/GlobalOpt/deadglobal-2.ll from my

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patch on friday.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44068 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-11-13 21:46:23 +00:00
parent 59ab338882
commit 19450241e5
1 changed files with 3 additions and 3 deletions
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6
lib/Transforms/IPO/GlobalOpt.cpp
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@ -345,14 +345,14 @@ static bool CleanupConstantGlobalUsers(Value *V, Constant *Init) {
// Do not transform "gepinst (gep constexpr (GV))" here, because forming
// "gepconstexpr (gep constexpr (GV))" will cause the two gep's to fold
// and will invalidate our notion of what Init is.
Constant *SubInit = 0;
if (!isa<ConstantExpr>(GEP->getOperand(0))) {
ConstantExpr *CE =
dyn_cast_or_null<ConstantExpr>(ConstantFoldInstruction(GEP));
if (Init && CE && CE->getOpcode() == Instruction::GetElementPtr)
if (Constant *SubInit =
ConstantFoldLoadThroughGEPConstantExpr(Init, CE))
Changed |= CleanupConstantGlobalUsers(GEP, SubInit);
SubInit = ConstantFoldLoadThroughGEPConstantExpr(Init, CE);
}
Changed |= CleanupConstantGlobalUsers(GEP, SubInit);
if (GEP->use_empty()) {
GEP->eraseFromParent();