ret <2 x i32> %add
}
+; This is an 'andn' of the low bit.
+
+define i32 @flip_and_mask(i32 %x) {
+; CHECK-LABEL: @flip_and_mask(
+; CHECK-NEXT: [[SHL:%.*]] = shl i32 %x, 31
+; CHECK-NEXT: [[SHR:%.*]] = ashr exact i32 [[SHL]], 31
+; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[SHR]], 1
+; CHECK-NEXT: ret i32 [[INC]]
+;
+ %shl = shl i32 %x, 31
+ %shr = ashr i32 %shl, 31
+ %inc = add i32 %shr, 1
+ ret i32 %inc
+}
+
+define <2 x i8> @flip_and_mask_splat(<2 x i8> %x) {
+; CHECK-LABEL: @flip_and_mask_splat(
+; CHECK-NEXT: [[SHL:%.*]] = shl <2 x i8> %x, <i8 7, i8 7>
+; CHECK-NEXT: [[SHR:%.*]] = ashr exact <2 x i8> [[SHL]], <i8 7, i8 7>
+; CHECK-NEXT: [[INC:%.*]] = add nsw <2 x i8> [[SHR]], <i8 1, i8 1>
+; CHECK-NEXT: ret <2 x i8> [[INC]]
+;
+ %shl = shl <2 x i8> %x, <i8 7, i8 7>
+ %shr = ashr <2 x i8> %shl, <i8 7, i8 7>
+ %inc = add <2 x i8> %shr, <i8 1, i8 1>
+ ret <2 x i8> %inc
+}
+
define i32 @test1(i32 %A) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: ret i32 %A