1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes=instcombine -S | FileCheck %s
4 define i1 @shl_nuw_eq_0(i8 %x, i8 %C) {
5 ; CHECK-LABEL: @shl_nuw_eq_0(
6 ; CHECK-NEXT: [[Z:%.*]] = icmp eq i8 [[X:%.*]], 0
7 ; CHECK-NEXT: ret i1 [[Z]]
14 define <2 x i1> @shl_nsw_ne_0(<2 x i8> %x, <2 x i8> %C) {
15 ; CHECK-LABEL: @shl_nsw_ne_0(
16 ; CHECK-NEXT: [[Z:%.*]] = icmp ne <2 x i8> [[X:%.*]], zeroinitializer
17 ; CHECK-NEXT: ret <2 x i1> [[Z]]
19 %y = shl nsw <2 x i8> %x, %C
20 %z = icmp ne <2 x i8> %y, zeroinitializer
24 define i1 @shl_eq_0_fail_missing_flags(i8 %x, i8 %C) {
25 ; CHECK-LABEL: @shl_eq_0_fail_missing_flags(
26 ; CHECK-NEXT: [[Y:%.*]] = shl i8 [[X:%.*]], [[C:%.*]]
27 ; CHECK-NEXT: [[Z:%.*]] = icmp eq i8 [[Y]], 0
28 ; CHECK-NEXT: ret i1 [[Z]]
35 define i1 @shl_ne_1_fail_nonzero(i8 %x, i8 %C) {
36 ; CHECK-LABEL: @shl_ne_1_fail_nonzero(
37 ; CHECK-NEXT: [[Y:%.*]] = shl nuw nsw i8 [[X:%.*]], [[C:%.*]]
38 ; CHECK-NEXT: [[Z:%.*]] = icmp ne i8 [[Y]], 1
39 ; CHECK-NEXT: ret i1 [[Z]]
41 %y = shl nsw nuw i8 %x, %C
46 define i1 @shl_nsw_slt_1(i8 %x, i8 %C) {
47 ; CHECK-LABEL: @shl_nsw_slt_1(
48 ; CHECK-NEXT: [[Z:%.*]] = icmp slt i8 [[X:%.*]], 1
49 ; CHECK-NEXT: ret i1 [[Z]]
51 %y = shl nsw i8 %x, %C
52 %z = icmp slt i8 %y, 1
56 define <2 x i1> @shl_vec_nsw_slt_1_0_todo_non_splat(<2 x i8> %x, <2 x i8> %C) {
57 ; CHECK-LABEL: @shl_vec_nsw_slt_1_0_todo_non_splat(
58 ; CHECK-NEXT: [[Y:%.*]] = shl nsw <2 x i8> [[X:%.*]], [[C:%.*]]
59 ; CHECK-NEXT: [[Z:%.*]] = icmp slt <2 x i8> [[Y]], <i8 1, i8 0>
60 ; CHECK-NEXT: ret <2 x i1> [[Z]]
62 %y = shl nsw <2 x i8> %x, %C
63 %z = icmp slt <2 x i8> %y, <i8 1, i8 0>
67 define <2 x i1> @shl_nsw_sle_n1(<2 x i8> %x, <2 x i8> %C) {
68 ; CHECK-LABEL: @shl_nsw_sle_n1(
69 ; CHECK-NEXT: [[Y:%.*]] = shl nsw <2 x i8> [[X:%.*]], [[C:%.*]]
70 ; CHECK-NEXT: [[Z:%.*]] = icmp slt <2 x i8> [[Y]], <i8 2, i8 2>
71 ; CHECK-NEXT: ret <2 x i1> [[Z]]
73 %y = shl nsw <2 x i8> %x, %C
74 %z = icmp sle <2 x i8> %y, <i8 1, i8 1>
78 define <2 x i1> @shl_nsw_sge_1(<2 x i8> %x, <2 x i8> %C) {
79 ; CHECK-LABEL: @shl_nsw_sge_1(
80 ; CHECK-NEXT: [[Z:%.*]] = icmp sgt <2 x i8> [[X:%.*]], zeroinitializer
81 ; CHECK-NEXT: ret <2 x i1> [[Z]]
83 %y = shl nsw <2 x i8> %x, %C
84 %z = icmp sge <2 x i8> %y, <i8 1, i8 1>
88 define i1 @shl_nsw_sgt_n1(i8 %x, i8 %C) {
89 ; CHECK-LABEL: @shl_nsw_sgt_n1(
90 ; CHECK-NEXT: [[Z:%.*]] = icmp sgt i8 [[X:%.*]], -1
91 ; CHECK-NEXT: ret i1 [[Z]]
93 %y = shl nsw i8 %x, %C
94 %z = icmp sgt i8 %y, -1
98 define i1 @shl_nuw_sgt_n1_fail_wrong_flag(i8 %x, i8 %C) {
99 ; CHECK-LABEL: @shl_nuw_sgt_n1_fail_wrong_flag(
100 ; CHECK-NEXT: [[Y:%.*]] = shl nuw i8 [[X:%.*]], [[C:%.*]]
101 ; CHECK-NEXT: [[Z:%.*]] = icmp sgt i8 [[Y]], -1
102 ; CHECK-NEXT: ret i1 [[Z]]
104 %y = shl nuw i8 %x, %C
105 %z = icmp sgt i8 %y, -1
109 define i1 @shl_nsw_nuw_ult_Csle0(i8 %x, i8 %C) {
110 ; CHECK-LABEL: @shl_nsw_nuw_ult_Csle0(
111 ; CHECK-NEXT: [[Z:%.*]] = icmp ult i8 [[X:%.*]], -19
112 ; CHECK-NEXT: ret i1 [[Z]]
114 %y = shl nuw nsw i8 %x, %C
115 %z = icmp ult i8 %y, -19
119 define i1 @shl_nsw_ule_Csle0_fail_missing_flag(i8 %x, i8 %C) {
120 ; CHECK-LABEL: @shl_nsw_ule_Csle0_fail_missing_flag(
121 ; CHECK-NEXT: [[Y:%.*]] = shl nsw i8 [[X:%.*]], [[C:%.*]]
122 ; CHECK-NEXT: [[Z:%.*]] = icmp ult i8 [[Y]], -18
123 ; CHECK-NEXT: ret i1 [[Z]]
125 %y = shl nsw i8 %x, %C
126 %z = icmp ule i8 %y, -19
130 define i1 @shl_nsw_nuw_uge_Csle0(i8 %x, i8 %C) {
131 ; CHECK-LABEL: @shl_nsw_nuw_uge_Csle0(
132 ; CHECK-NEXT: [[Z:%.*]] = icmp ugt i8 [[X:%.*]], -121
133 ; CHECK-NEXT: ret i1 [[Z]]
135 %y = shl nuw nsw i8 %x, %C
136 %z = icmp uge i8 %y, -120
140 define i1 @shl_nuw_ugt_Csle0_fail_missing_flag(i8 %x, i8 %C) {
141 ; CHECK-LABEL: @shl_nuw_ugt_Csle0_fail_missing_flag(
142 ; CHECK-NEXT: [[Y:%.*]] = shl nuw i8 [[X:%.*]], [[C:%.*]]
143 ; CHECK-NEXT: [[Z:%.*]] = icmp ugt i8 [[Y]], -19
144 ; CHECK-NEXT: ret i1 [[Z]]
146 %y = shl nuw i8 %x, %C
147 %z = icmp ugt i8 %y, -19
151 define <2 x i1> @shl_nsw_nuw_sgt_Csle0(<2 x i8> %x, <2 x i8> %C) {
152 ; CHECK-LABEL: @shl_nsw_nuw_sgt_Csle0(
153 ; CHECK-NEXT: [[Z:%.*]] = icmp sgt <2 x i8> [[X:%.*]], <i8 -10, i8 -10>
154 ; CHECK-NEXT: ret <2 x i1> [[Z]]
156 %y = shl nsw nuw <2 x i8> %x, %C
157 %z = icmp sgt <2 x i8> %y, <i8 -10, i8 -10>
161 define <2 x i1> @shl_nsw_nuw_sge_Csle0_todo_non_splat(<2 x i8> %x, <2 x i8> %C) {
162 ; CHECK-LABEL: @shl_nsw_nuw_sge_Csle0_todo_non_splat(
163 ; CHECK-NEXT: [[Y:%.*]] = shl nuw nsw <2 x i8> [[X:%.*]], [[C:%.*]]
164 ; CHECK-NEXT: [[Z:%.*]] = icmp sgt <2 x i8> [[Y]], <i8 -11, i8 -66>
165 ; CHECK-NEXT: ret <2 x i1> [[Z]]
167 %y = shl nsw nuw <2 x i8> %x, %C
168 %z = icmp sge <2 x i8> %y, <i8 -10, i8 -65>
172 define <2 x i1> @shl_nsw_nuw_sle_Csle0(<2 x i8> %x, <2 x i8> %C) {
173 ; CHECK-LABEL: @shl_nsw_nuw_sle_Csle0(
174 ; CHECK-NEXT: [[Z:%.*]] = icmp slt <2 x i8> [[X:%.*]], <i8 -5, i8 -5>
175 ; CHECK-NEXT: ret <2 x i1> [[Z]]
177 %y = shl nsw nuw <2 x i8> %x, %C
178 %z = icmp sle <2 x i8> %y, <i8 -6, i8 -6>
182 define <2 x i1> @shl_nsw_nuw_slt_Csle0_fail_positive(<2 x i8> %x, <2 x i8> %C) {
183 ; CHECK-LABEL: @shl_nsw_nuw_slt_Csle0_fail_positive(
184 ; CHECK-NEXT: [[Y:%.*]] = shl nuw nsw <2 x i8> [[X:%.*]], [[C:%.*]]
185 ; CHECK-NEXT: [[Z:%.*]] = icmp slt <2 x i8> [[Y]], <i8 6, i8 6>
186 ; CHECK-NEXT: ret <2 x i1> [[Z]]
188 %y = shl nsw nuw <2 x i8> %x, %C
189 %z = icmp slt <2 x i8> %y, <i8 6, i8 6>