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InstCombine: Fix a crasher when encountering a function pointer.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162180 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-08-18 22:04:34 +00:00
parent 0a8f898000
commit a4b5717ea7
2 changed files with 9 additions and 1 deletions
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2
lib/Transforms/InstCombine/InstCombineCompares.cpp
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@ -2990,7 +2990,7 @@ Instruction *InstCombiner::visitFCmpInst(FCmpInst &I) {
CallInst *CI = cast<CallInst>(LHSI);
LibFunc::Func Func;
// Various optimization for fabs compared with zero.
if (RHSC->isNullValue() &&
if (RHSC->isNullValue() && CI->getCalledFunction() &&
TLI->getLibFunc(CI->getCalledFunction()->getName(), Func) &&
TLI->has(Func)) {
if (Func == LibFunc::fabs || Func == LibFunc::fabsf ||

8
test/Transforms/InstCombine/fcmp.ll
View File

@ -151,3 +151,11 @@ define i32 @test16(double %a) nounwind {
; CHECK-NOT: fabs
; CHECK: fcmp ueq double %a, 0.000000e+00
}
; Don't crash.
define i32 @test17(double %a, double (double)* %p) nounwind {
%call = tail call double %p(double %a) nounwind
%cmp = fcmp ueq double %call, 0.000000e+00
%conv = zext i1 %cmp to i32
ret i32 %conv
}