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Revert a part of r223583, for now. It seems causing different emission between stage2(gcc-clang) and stage3 clang. Investigating.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223624 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
NAKAMURA Takumi 2014-12-08 02:07:22 +00:00
parent 47a14eae5a
commit e4a5390406
2 changed files with 0 additions and 14 deletions
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5
lib/Analysis/InstructionSimplify.cpp
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@ -1476,11 +1476,6 @@ static Value *simplifyUnsignedRangeCheck(ICmpInst *ZeroICmp,
return UnsignedICmp;
}
// X < Y && Y == 0 --> false
if (UnsignedPred == ICmpInst::ICMP_ULT && EqPred == ICmpInst::ICMP_EQ &&
IsAnd)
return getFalse(UnsignedICmp->getType());
return nullptr;
}

9
test/Transforms/InstSimplify/AndOrXor.ll
View File

@ -166,15 +166,6 @@ define i1 @and_icmp1(i32 %x, i32 %y) {
; CHECK: %[[cmp:.*]] = icmp ult i32 %x, %y
; CHECK: ret i1 %[[cmp]]
define i1 @and_icmp2(i32 %x, i32 %y) {
%1 = icmp ult i32 %x, %y
%2 = icmp eq i32 %y, 0
%3 = and i1 %1, %2
ret i1 %3
}
; CHECK-LABEL: @and_icmp2(
; CHECK: ret i1 false
define i1 @or_icmp1(i32 %x, i32 %y) {
%1 = icmp ult i32 %x, %y
%2 = icmp ne i32 %y, 0