declare i8 @llvm.abs.i8(i8, i1)
declare void @use_i1(i1)
+declare void @use_i8(i8)
declare void @use_i32(i32)
declare void @use_i64(i64)
%r = icmp ne i8 %a, 0
ret i1 %r
}
+
+; fold icmp(X | OrC, C) --> icmp(X, 0)
+
+define i1 @or_positive_sgt_zero(i8 %a) {
+; CHECK-LABEL: @or_positive_sgt_zero(
+; CHECK-NEXT: [[B:%.*]] = or i8 [[A:%.*]], 24
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[B]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp sgt i8 %b, 0
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_postive_sgt_zero_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_postive_sgt_zero_vec(
+; CHECK-NEXT: [[B:%.*]] = or <2 x i8> [[A:%.*]], <i8 24, i8 24>
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> [[B]], zeroinitializer
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp sgt <2 x i8> %b, <i8 0, i8 0>
+ ret <2 x i1> %cmp
+}
+
+define <2 x i1> @or_poison_vec_sgt_zero_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_poison_vec_sgt_zero_vec(
+; CHECK-NEXT: ret <2 x i1> poison
+;
+
+ %b = or <2 x i8> %a, <i8 poison, i8 poison>
+ %cmp = icmp sgt <2 x i8> %b, <i8 0, i8 0>
+ ret <2 x i1> %cmp
+}
+
+define i1 @or_positive_sge_zero(i8 %a) {
+; CHECK-LABEL: @or_positive_sge_zero(
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[A:%.*]], -1
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp sge i8 %b, 0
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_postive_sge_zero_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_postive_sge_zero_vec(
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> [[A:%.*]], <i8 -1, i8 -1>
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp sge <2 x i8> %b, <i8 0, i8 0>
+ ret <2 x i1> %cmp
+}
+
+define <2 x i1> @or_poison_vec_sge_zero_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_poison_vec_sge_zero_vec(
+; CHECK-NEXT: ret <2 x i1> poison
+;
+
+ %b = or <2 x i8> %a, <i8 poison, i8 poison>
+ %cmp = icmp sge <2 x i8> %b, <i8 0, i8 0>
+ ret <2 x i1> %cmp
+}
+
+define i1 @or_positive_sge_postive(i8 %a) {
+; CHECK-LABEL: @or_positive_sge_postive(
+; CHECK-NEXT: [[B:%.*]] = or i8 [[A:%.*]], 24
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[B]], 23
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp sge i8 %b, 24
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_postive_sge_positive_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_postive_sge_positive_vec(
+; CHECK-NEXT: [[B:%.*]] = or <2 x i8> [[A:%.*]], <i8 24, i8 24>
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> [[B]], <i8 23, i8 23>
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp sge <2 x i8> %b, <i8 24, i8 24>
+ ret <2 x i1> %cmp
+}
+
+define <2 x i1> @or_poison_vec_sge_positive_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_poison_vec_sge_positive_vec(
+; CHECK-NEXT: ret <2 x i1> poison
+;
+
+ %b = or <2 x i8> %a, <i8 poison, i8 poison>
+ %cmp = icmp sge <2 x i8> %b, <i8 24, i8 24>
+ ret <2 x i1> %cmp
+}
+
+define i1 @or_positive_sle_zero(i8 %a) {
+; CHECK-LABEL: @or_positive_sle_zero(
+; CHECK-NEXT: [[B:%.*]] = or i8 [[A:%.*]], 24
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[B]], 1
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp sle i8 %b, 0
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_postive_sle_zero_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_postive_sle_zero_vec(
+; CHECK-NEXT: [[B:%.*]] = or <2 x i8> [[A:%.*]], <i8 24, i8 24>
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> [[B]], <i8 1, i8 1>
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp sle <2 x i8> %b, <i8 0, i8 0>
+ ret <2 x i1> %cmp
+}
+
+define <2 x i1> @or_poison_vec_sle_zero_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_poison_vec_sle_zero_vec(
+; CHECK-NEXT: ret <2 x i1> poison
+;
+
+ %b = or <2 x i8> %a, <i8 poison, i8 poison>
+ %cmp = icmp sle <2 x i8> %b, <i8 0, i8 0>
+ ret <2 x i1> %cmp
+}
+
+define i1 @or_positive_slt_zero(i8 %a) {
+; CHECK-LABEL: @or_positive_slt_zero(
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[A:%.*]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp slt i8 %b, 0
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_postive_slt_zero_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_postive_slt_zero_vec(
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> [[A:%.*]], zeroinitializer
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp slt <2 x i8> %b, <i8 0, i8 0>
+ ret <2 x i1> %cmp
+}
+
+define <2 x i1> @or_poison_vec_slt_zero_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_poison_vec_slt_zero_vec(
+; CHECK-NEXT: ret <2 x i1> poison
+;
+
+ %b = or <2 x i8> %a, <i8 poison, i8 poison>
+ %cmp = icmp slt <2 x i8> %b, <i8 0, i8 0>
+ ret <2 x i1> %cmp
+}
+
+define i1 @or_positive_slt_postive(i8 %a) {
+; CHECK-LABEL: @or_positive_slt_postive(
+; CHECK-NEXT: [[B:%.*]] = or i8 [[A:%.*]], 24
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[B]], 24
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp slt i8 %b, 24
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_postive_slt_positive_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_postive_slt_positive_vec(
+; CHECK-NEXT: [[B:%.*]] = or <2 x i8> [[A:%.*]], <i8 24, i8 24>
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> [[B]], <i8 24, i8 24>
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp slt <2 x i8> %b, <i8 24, i8 24>
+ ret <2 x i1> %cmp
+}
+
+define <2 x i1> @or_poison_vec_slt_positive_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_poison_vec_slt_positive_vec(
+; CHECK-NEXT: ret <2 x i1> poison
+;
+
+ %b = or <2 x i8> %a, <i8 poison, i8 poison>
+ %cmp = icmp slt <2 x i8> %b, <i8 24, i8 24>
+ ret <2 x i1> %cmp
+}
+
+; negative tests for icmp(X | OrC, C) --> icmp(X, 0)
+
+define i1 @or_positive_sgt_neg(i8 %a) {
+; CHECK-LABEL: @or_positive_sgt_neg(
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[A:%.*]], -1
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp sgt i8 %b, -1
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_postive_sgt_neg_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_postive_sgt_neg_vec(
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> [[A:%.*]], <i8 -1, i8 -1>
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp sgt <2 x i8> %b, <i8 -1, i8 -1>
+ ret <2 x i1> %cmp
+}
+
+define i1 @mul_or_positive_sge_neg(i8 %a) {
+; CHECK-LABEL: @mul_or_positive_sge_neg(
+; CHECK-NEXT: [[B:%.*]] = or i8 [[A:%.*]], 24
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[B]], -2
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp sge i8 %b, -1
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_postive_sge_neg_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_postive_sge_neg_vec(
+; CHECK-NEXT: [[B:%.*]] = or <2 x i8> [[A:%.*]], <i8 24, i8 24>
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> [[B]], <i8 -2, i8 -2>
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp sge <2 x i8> %b, <i8 -1, i8 -1>
+ ret <2 x i1> %cmp
+}
+
+define i1 @mul_or_small_sge_large(i8 %a) {
+; CHECK-LABEL: @mul_or_small_sge_large(
+; CHECK-NEXT: [[B:%.*]] = or i8 [[A:%.*]], 24
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[B]], 24
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp sge i8 %b, 25
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_small_sge_large_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_small_sge_large_vec(
+; CHECK-NEXT: [[B:%.*]] = or <2 x i8> [[A:%.*]], <i8 24, i8 24>
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> [[B]], <i8 24, i8 24>
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp sge <2 x i8> %b, <i8 25, i8 25>
+ ret <2 x i1> %cmp
+}
+
+define i1 @or_positive_sle_neg(i8 %a) {
+; CHECK-LABEL: @or_positive_sle_neg(
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[A:%.*]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp sle i8 %b, -1
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_sle_neg_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_sle_neg_vec(
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> [[A:%.*]], zeroinitializer
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp sle <2 x i8> %b, <i8 -1, i8 -1>
+ ret <2 x i1> %cmp
+}
+
+define i1 @or_positive_slt_neg(i8 %a) {
+; CHECK-LABEL: @or_positive_slt_neg(
+; CHECK-NEXT: [[B:%.*]] = or i8 [[A:%.*]], 24
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[B]], -1
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp slt i8 %b, -1
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_postive_slt_neg_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_postive_slt_neg_vec(
+; CHECK-NEXT: [[B:%.*]] = or <2 x i8> [[A:%.*]], <i8 24, i8 24>
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> [[B]], <i8 -1, i8 -1>
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp slt <2 x i8> %b, <i8 -1, i8 -1>
+ ret <2 x i1> %cmp
+}
+
+define i1 @or_small_slt_large(i8 %a) {
+; CHECK-LABEL: @or_small_slt_large(
+; CHECK-NEXT: [[B:%.*]] = or i8 [[A:%.*]], 24
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[B]], 25
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ %cmp = icmp slt i8 %b, 25
+ ret i1 %cmp
+}
+
+define <2 x i1> @or_small_slt_large_vec(<2 x i8> %a) {
+; CHECK-LABEL: @or_small_slt_large_vec(
+; CHECK-NEXT: [[B:%.*]] = or <2 x i8> [[A:%.*]], <i8 24, i8 24>
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> [[B]], <i8 25, i8 25>
+; CHECK-NEXT: ret <2 x i1> [[CMP]]
+;
+
+ %b = or <2 x i8> %a, <i8 24, i8 24>
+ %cmp = icmp slt <2 x i8> %b, <i8 25, i8 25>
+ ret <2 x i1> %cmp
+}
+
+define i1 @or_positive_sgt_zero_multi_use(i8 %a) {
+; CHECK-LABEL: @or_positive_sgt_zero_multi_use(
+; CHECK-NEXT: [[B:%.*]] = or i8 [[A:%.*]], 24
+; CHECK-NEXT: call void @use_i8(i8 [[B]])
+; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[B]], 0
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %b = or i8 %a, 24
+ call void @use_i8(i8 %b)
+ %cmp = icmp sgt i8 %b, 0
+ ret i1 %cmp
+}