ret i1 %ret
}
-define i1 @pv(i8 %x, i8 %y) {
-; CHECK-LABEL: @pv(
-; CHECK-NEXT: [[TMP0:%.*]] = lshr i8 -1, [[Y:%.*]]
-; CHECK-NEXT: [[TMP1:%.*]] = and i8 [[TMP0]], [[X:%.*]]
-; CHECK-NEXT: [[RET:%.*]] = icmp sge i8 [[TMP1]], [[X]]
-; CHECK-NEXT: ret i1 [[RET]]
-;
- %tmp0 = lshr i8 -1, %y
- %tmp1 = and i8 %tmp0, %x
- %ret = icmp sge i8 %tmp1, %x
- ret i1 %ret
-}
-
; ============================================================================ ;
; Vector tests
; ============================================================================ ;
%ret = icmp sge <2 x i8> %tmp0, %x
ret <2 x i1> %ret
}
+
+; ============================================================================ ;
+; Potential miscompiles.
+; ============================================================================ ;
+
+define i1 @nv(i8 %x, i8 %y) {
+; CHECK-LABEL: @nv(
+; CHECK-NEXT: [[TMP0:%.*]] = lshr i8 -1, [[Y:%.*]]
+; CHECK-NEXT: [[TMP1:%.*]] = and i8 [[TMP0]], [[X:%.*]]
+; CHECK-NEXT: [[RET:%.*]] = icmp sge i8 [[TMP1]], [[X]]
+; CHECK-NEXT: ret i1 [[RET]]
+;
+ %tmp0 = lshr i8 -1, %y
+ %tmp1 = and i8 %tmp0, %x
+ %ret = icmp sge i8 %tmp1, %x
+ ret i1 %ret
+}
+
+define <2 x i1> @n3_vec(<2 x i8> %x) {
+; CHECK-LABEL: @n3_vec(
+; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <2 x i8> [[X:%.*]], <i8 4, i8 0>
+; CHECK-NEXT: ret <2 x i1> [[TMP1]]
+;
+ %tmp0 = and <2 x i8> %x, <i8 3, i8 -1>
+ %ret = icmp sge <2 x i8> %tmp0, %x
+ ret <2 x i1> %ret
+}
+
+define <3 x i1> @n4_vec(<3 x i8> %x) {
+; CHECK-LABEL: @n4_vec(
+; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <3 x i8> [[X:%.*]], <i8 4, i8 undef, i8 0>
+; CHECK-NEXT: ret <3 x i1> [[TMP1]]
+;
+ %tmp0 = and <3 x i8> %x, <i8 3, i8 undef, i8 -1>
+ %ret = icmp sge <3 x i8> %tmp0, %x
+ ret <3 x i1> %ret
+}
ret i1 %ret
}
-define i1 @pv(i8 %x, i8 %y) {
-; CHECK-LABEL: @pv(
-; CHECK-NEXT: [[TMP0:%.*]] = lshr i8 -1, [[Y:%.*]]
-; CHECK-NEXT: [[TMP1:%.*]] = and i8 [[TMP0]], [[X:%.*]]
-; CHECK-NEXT: [[RET:%.*]] = icmp slt i8 [[TMP1]], [[X]]
-; CHECK-NEXT: ret i1 [[RET]]
-;
- %tmp0 = lshr i8 -1, %y
- %tmp1 = and i8 %tmp0, %x
- %ret = icmp slt i8 %tmp1, %x
- ret i1 %ret
-}
-
; ============================================================================ ;
; Vector tests
; ============================================================================ ;
%ret = icmp slt <2 x i8> %tmp0, %x
ret <2 x i1> %ret
}
+
+; ============================================================================ ;
+; Potential miscompiles.
+; ============================================================================ ;
+
+define i1 @nv(i8 %x, i8 %y) {
+; CHECK-LABEL: @nv(
+; CHECK-NEXT: [[TMP0:%.*]] = lshr i8 -1, [[Y:%.*]]
+; CHECK-NEXT: [[TMP1:%.*]] = and i8 [[TMP0]], [[X:%.*]]
+; CHECK-NEXT: [[RET:%.*]] = icmp slt i8 [[TMP1]], [[X]]
+; CHECK-NEXT: ret i1 [[RET]]
+;
+ %tmp0 = lshr i8 -1, %y
+ %tmp1 = and i8 %tmp0, %x
+ %ret = icmp slt i8 %tmp1, %x
+ ret i1 %ret
+}
+
+define <2 x i1> @n3(<2 x i8> %x) {
+; CHECK-LABEL: @n3(
+; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt <2 x i8> [[X:%.*]], <i8 3, i8 -1>
+; CHECK-NEXT: ret <2 x i1> [[TMP1]]
+;
+ %tmp0 = and <2 x i8> %x, <i8 3, i8 -1>
+ %ret = icmp slt <2 x i8> %tmp0, %x
+ ret <2 x i1> %ret
+}
+
+define <3 x i1> @n4(<3 x i8> %x) {
+; CHECK-LABEL: @n4(
+; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt <3 x i8> [[X:%.*]], <i8 3, i8 undef, i8 -1>
+; CHECK-NEXT: ret <3 x i1> [[TMP1]]
+;
+ %tmp0 = and <3 x i8> %x, <i8 3, i8 undef, i8 -1>
+ %ret = icmp slt <3 x i8> %tmp0, %x
+ ret <3 x i1> %ret
+}