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[InstCombine] Fix PR23751.

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PR23751 was caused by a missing ``break;`` in r234388.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239171 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjoy Das 2015-06-05 18:04:42 +00:00
parent f5c04a9da7
commit 46216f7f99
2 changed files with 14 additions and 0 deletions
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1
lib/Transforms/InstCombine/InstCombineCompares.cpp
View File

@ -2149,6 +2149,7 @@ bool InstCombiner::OptimizeOverflowCheck(OverflowCheckFlavor OCF, Value *LHS,
if (WillNotOverflowSignedAdd(LHS, RHS, OrigI))
return SetResult(Builder->CreateNSWAdd(LHS, RHS), Builder->getFalse(),
true);
break;
}
case OCF_UNSIGNED_SUB:

13
test/Transforms/InstCombine/pr23751.ll Normal file
View File

@ -0,0 +1,13 @@
; RUN: opt -instcombine -S < %s | FileCheck %s
@d = common global i32 0, align 4
define i1 @f(i8 zeroext %p) #1 {
; CHECK-NOT: ret i1 false
%1 = zext i8 %p to i32
%2 = load i32, i32* @d, align 4
%3 = or i32 %2, -2
%4 = add nsw i32 %3, %1
%5 = icmp ugt i32 %1, %4
ret i1 %5
}