}
}
+ // If the comparison is a comparison between two i1's, simplify it.
+ if (C1->getType() == Type::getInt1Ty(Context)) {
+ switch(pred) {
+ case ICmpInst::ICMP_EQ:
+ if (isa<ConstantInt>(C2))
+ return ConstantExpr::getXor(C1, ConstantExpr::getNot(C2));
+ return ConstantExpr::getXor(ConstantExpr::getNot(C1), C2);
+ case ICmpInst::ICMP_NE:
+ return ConstantExpr::getXor(C1, C2);
+ default:
+ break;
+ }
+ }
+
if (isa<ConstantInt>(C1) && isa<ConstantInt>(C2)) {
APInt V1 = cast<ConstantInt>(C1)->getValue();
APInt V2 = cast<ConstantInt>(C2)->getValue();
; CHECK: @I = global i1 icmp ult (i8* @X, i8* @Y) ; <i1*> [#uses=0]
@J = global i1 xor (i1 icmp ult (i8* @X, i8* @Y), i1 true)
; CHECK: @J = global i1 icmp uge (i8* @X, i8* @Y) ; <i1*> [#uses=0]
+
+@K = global i1 icmp eq (i1 icmp ult (i8* @X, i8* @Y), i1 false)
+; CHECK: @K = global i1 icmp uge (i8* @X, i8* @Y) ; <i1*> [#uses=0]
+@L = global i1 icmp eq (i1 icmp ult (i8* @X, i8* @Y), i1 true)
+; CHECK: @L = global i1 icmp ult (i8* @X, i8* @Y) ; <i1*> [#uses=0]
+@M = global i1 icmp ne (i1 icmp ult (i8* @X, i8* @Y), i1 true)
+; CHECK: @M = global i1 icmp uge (i8* @X, i8* @Y) ; <i1*> [#uses=0]
+@N = global i1 icmp ne (i1 icmp ult (i8* @X, i8* @Y), i1 false)
+; CHECK: @N = global i1 icmp ult (i8* @X, i8* @Y) ; <i1*> [#uses=0]