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fix PR8983, a broken assertion.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123562 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2011-01-16 03:43:53 +00:00
parent c1a62834a2
commit 156eb0a569
2 changed files with 13 additions and 1 deletions
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2
lib/Analysis/ConstantFolding.cpp
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@ -581,7 +581,7 @@ static Constant *SymbolicallyEvaluateGEP(Constant *const *Ops, unsigned NumOps,
if (NumOps == 2 &&
cast<PointerType>(ResultTy)->getElementType()->isIntegerTy(8)) {
ConstantExpr *CE = dyn_cast<ConstantExpr>(Ops[1]);
assert(CE->getType() == IntPtrTy &&
assert((CE == 0 || CE->getType() == IntPtrTy) &&
"CastGEPIndices didn't canonicalize index types!");
if (CE && CE->getOpcode() == Instruction::Sub &&
CE->getOperand(0)->isNullValue()) {

12
test/Transforms/InstCombine/crash.ll
View File

@ -341,3 +341,15 @@ define double @test16(i32 %a) nounwind {
%select = select i1 %cmp, double 2.000000e+00, double 3.141592e+00
ret double %select
}
; PR8983
%struct.basic_ios = type { i8 }
define %struct.basic_ios *@test17() ssp {
entry:
%add.ptr.i = getelementptr i8* null, i64 undef
%0 = bitcast i8* %add.ptr.i to %struct.basic_ios*
ret %struct.basic_ios* %0
}