And, Constant::getNullValue(And->getType()));
}
+ // FIXME: This transform can create illegal types. Use the DataLayout to
+ // decide when to try this?
+
// Transform (icmp pred iM (shl iM %v, N), C)
// -> (icmp pred i(M-N) (trunc %v iM to i(M-N)), (trunc (C>>N))
// Transform the shl to a trunc if (trunc (C>>N)) has no loss and M-N.
ret i1 %cmp
}
+; FIXME: We shouldn't be creating illegal types like i15 in InstCombine.
+
+define i1 @icmp_shl17(i32 %x) {
+; CHECK-LABEL: @icmp_shl17(
+; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 %x to i15
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i15 [[TMP1]], 18
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %shl = shl i32 %x, 17
+ %cmp = icmp slt i32 %shl, 2359296
+ ret i1 %cmp
+}
+
define <2 x i1> @icmp_shl16_vec(<2 x i32> %x) {
; CHECK-LABEL: @icmp_shl16_vec(
; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i32> %x to <2 x i16>