but wasn't due to the same logic bug that caused PR14361.
llvm-svn: 168186
if (A && C && (A == C || A == D || B == C || B == D) &&
NoLHSWrapProblem && NoRHSWrapProblem) {
// Determine Y and Z in the form icmp (X+Y), (X+Z).
- Value *Y = (A == C || A == D) ? B : A;
- Value *Z = (C == A || C == B) ? D : C;
+ Value *Y, *Z;
+ if (A == C) {
+ Y = B;
+ Z = D;
+ } else if (A == D) {
+ Y = B;
+ Z = C;
+ } else if (B == C) {
+ Y = A;
+ Z = D;
+ } else if (B == D) {
+ Y = A;
+ Z = C;
+ }
if (Value *V = SimplifyICmpInst(Pred, Y, Z, Q, MaxRecurse-1))
return V;
}
; CHECK: ret i1 true
}
+define i1 @add6(i64 %A, i64 %B) {
+; CHECK: @add6
+ %s1 = add i64 %A, %B
+ %s2 = add i64 %B, %A
+ %cmp = icmp eq i64 %s1, %s2
+ ret i1 %cmp
+; CHECK: ret i1 true
+}
+
define i1 @addpowtwo(i32 %x, i32 %y) {
; CHECK: @addpowtwo
%l = lshr i32 %x, 1