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Revert broken srem logic from r126991.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127021 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1700,21 +1700,6 @@ static Value *SimplifyICmpInst(unsigned Predicate, Value *LHS, Value *RHS,
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}
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}
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if (LBO && match(LBO, m_SRem(m_Value(), m_Specific(RHS)))) {
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switch (Pred) {
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default:
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break;
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case ICmpInst::ICMP_EQ:
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case ICmpInst::ICMP_SGT:
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case ICmpInst::ICMP_SGE:
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return ConstantInt::getFalse(RHS->getContext());
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case ICmpInst::ICMP_NE:
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case ICmpInst::ICMP_SLT:
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case ICmpInst::ICMP_SLE:
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return ConstantInt::getTrue(RHS->getContext());
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}
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}
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// If the comparison is with the result of a select instruction, check whether
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// comparing with either branch of the select always yields the same value.
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if (isa<SelectInst>(LHS) || isa<SelectInst>(RHS))
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@ -253,15 +253,6 @@ define i1 @srem1(i32 %X) {
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; CHECK: ret i1 false
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}
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define i1 @srem2(i32 %X, i32 %Y) {
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; CHECK: @srem2
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%neg = sub i32 %Y, 0
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%A = srem i32 %X, %Y
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%B = icmp slt i32 %A, %neg
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ret i1 %B
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; CHECK: ret i1 true
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}
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define i1 @udiv1(i32 %X) {
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; CHECK: @udiv1
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%A = udiv i32 %X, 1000000
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