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Revert broken srem logic from r126991.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127021 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2011-03-04 19:26:08 +00:00
parent 49eaf76c53
commit e2ee753bc4
2 changed files with 0 additions and 24 deletions
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15
lib/Analysis/InstructionSimplify.cpp
View File

@ -1700,21 +1700,6 @@ static Value *SimplifyICmpInst(unsigned Predicate, Value *LHS, Value *RHS,
}
}
if (LBO && match(LBO, m_SRem(m_Value(), m_Specific(RHS)))) {
switch (Pred) {
default:
break;
case ICmpInst::ICMP_EQ:
case ICmpInst::ICMP_SGT:
case ICmpInst::ICMP_SGE:
return ConstantInt::getFalse(RHS->getContext());
case ICmpInst::ICMP_NE:
case ICmpInst::ICMP_SLT:
case ICmpInst::ICMP_SLE:
return ConstantInt::getTrue(RHS->getContext());
}
}
// If the comparison is with the result of a select instruction, check whether
// comparing with either branch of the select always yields the same value.
if (isa<SelectInst>(LHS) || isa<SelectInst>(RHS))

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

@ -253,15 +253,6 @@ define i1 @srem1(i32 %X) {
; CHECK: ret i1 false
}
define i1 @srem2(i32 %X, i32 %Y) {
; CHECK: @srem2
%neg = sub i32 %Y, 0
%A = srem i32 %X, %Y
%B = icmp slt i32 %A, %neg
ret i1 %B
; CHECK: ret i1 true
}
define i1 @udiv1(i32 %X) {
; CHECK: @udiv1
%A = udiv i32 %X, 1000000