maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

InstCombine: Fix a crasher when encountering a function pointer. 

llvm-svn: 162180
This commit is contained in:
Benjamin Kramer 2012-08-18 22:04:34 +00:00
parent e1014e7b98
commit 9d03242fcf
2 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
View File

@ -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
llvm/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
}