BO0->hasOneUse() && BO1->hasOneUse())
return new ICmpInst(Pred, D, B);
+ // icmp (0-X) < cst --> x > -cst
+ if (NoOp0WrapProblem && ICmpInst::isSigned(Pred)) {
+ Value *X;
+ if (match(BO0, m_Neg(m_Value(X))))
+ if (ConstantInt *RHSC = dyn_cast<ConstantInt>(Op1))
+ if (!RHSC->isMinValue(/*isSigned=*/true))
+ return new ICmpInst(I.getSwappedPredicate(), X,
+ ConstantExpr::getNeg(RHSC));
+ }
+
BinaryOperator *SRem = nullptr;
// icmp (srem X, Y), Y
if (BO0 && BO0->getOpcode() == Instruction::SRem &&
%z = icmp ne i32 %x, %y
ret i1 %z
}
+
+; CHECK-LABEL: @icmp_neg_cst_slt
+; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %a, 10
+; CHECK-NEXT: ret i1 [[CMP]]
+define i1 @icmp_neg_cst_slt(i32 %a) {
+ %1 = sub nsw i32 0, %a
+ %2 = icmp slt i32 %1, -10
+ ret i1 %2
+}