1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -S -passes=instcombine < %s | FileCheck %s
4 declare void @llvm.assume(i1)
6 define i1 @icmp_trunc_x_trunc_y(i32 %x, i32 %y) {
7 ; CHECK-LABEL: @icmp_trunc_x_trunc_y(
8 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i32 [[X:%.*]], 65536
9 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i32 [[Y:%.*]], 65536
10 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
11 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
12 ; CHECK-NEXT: [[R:%.*]] = icmp eq i32 [[X]], [[Y]]
13 ; CHECK-NEXT: ret i1 [[R]]
15 %x_lb_only = icmp ult i32 %x, 65536
16 %y_lb_only = icmp ult i32 %y, 65536
17 call void @llvm.assume(i1 %x_lb_only)
18 call void @llvm.assume(i1 %y_lb_only)
19 %x16 = trunc i32 %x to i16
20 %y16 = trunc i32 %y to i16
21 %r = icmp eq i16 %x16, %y16
25 define i1 @icmp_trunc_x_trunc_y_fail_from_illegal1(i256 %x, i256 %y) {
26 ; CHECK-LABEL: @icmp_trunc_x_trunc_y_fail_from_illegal1(
27 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i256 [[X:%.*]], 65536
28 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i256 [[Y:%.*]], 65536
29 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
30 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
31 ; CHECK-NEXT: [[X16:%.*]] = trunc nuw i256 [[X]] to i16
32 ; CHECK-NEXT: [[Y16:%.*]] = trunc nuw i256 [[Y]] to i16
33 ; CHECK-NEXT: [[R:%.*]] = icmp eq i16 [[X16]], [[Y16]]
34 ; CHECK-NEXT: ret i1 [[R]]
36 %x_lb_only = icmp ult i256 %x, 65536
37 %y_lb_only = icmp ult i256 %y, 65536
38 call void @llvm.assume(i1 %x_lb_only)
39 call void @llvm.assume(i1 %y_lb_only)
40 %x16 = trunc i256 %x to i16
41 %y16 = trunc i256 %y to i16
42 %r = icmp eq i16 %x16, %y16
46 define i1 @icmp_trunc_x_trunc_y_illegal_trunc_to_legal_anyways(i123 %x, i32 %y) {
47 ; CHECK-LABEL: @icmp_trunc_x_trunc_y_illegal_trunc_to_legal_anyways(
48 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i123 [[X:%.*]], 65536
49 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i32 [[Y:%.*]], 65536
50 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
51 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
52 ; CHECK-NEXT: [[TMP1:%.*]] = trunc nuw nsw i123 [[X]] to i32
53 ; CHECK-NEXT: [[R:%.*]] = icmp eq i32 [[TMP1]], [[Y]]
54 ; CHECK-NEXT: ret i1 [[R]]
56 %x_lb_only = icmp ult i123 %x, 65536
57 %y_lb_only = icmp ult i32 %y, 65536
58 call void @llvm.assume(i1 %x_lb_only)
59 call void @llvm.assume(i1 %y_lb_only)
60 %x16 = trunc i123 %x to i16
61 %y16 = trunc i32 %y to i16
62 %r = icmp eq i16 %x16, %y16
66 define i1 @icmp_trunc_x_trunc_y_2_illegal_anyways(i33 %x, i63 %y) {
67 ; CHECK-LABEL: @icmp_trunc_x_trunc_y_2_illegal_anyways(
68 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i33 [[X:%.*]], 512
69 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i63 [[Y:%.*]], 512
70 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
71 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
72 ; CHECK-NEXT: [[TMP1:%.*]] = zext nneg i33 [[X]] to i63
73 ; CHECK-NEXT: [[R:%.*]] = icmp ugt i63 [[TMP1]], [[Y]]
74 ; CHECK-NEXT: ret i1 [[R]]
76 %x_lb_only = icmp ult i33 %x, 512
77 %y_lb_only = icmp ult i63 %y, 512
78 call void @llvm.assume(i1 %x_lb_only)
79 call void @llvm.assume(i1 %y_lb_only)
80 %x16 = trunc i33 %x to i9
81 %y16 = trunc i63 %y to i9
82 %r = icmp ult i9 %y16, %x16
86 define i1 @icmp_trunc_x_trunc_y_3(i64 %x, i32 %y) {
87 ; CHECK-LABEL: @icmp_trunc_x_trunc_y_3(
88 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i64 [[X:%.*]], 123
89 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i32 [[Y:%.*]], 256
90 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
91 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
92 ; CHECK-NEXT: [[TMP1:%.*]] = trunc nuw nsw i64 [[X]] to i32
93 ; CHECK-NEXT: [[R:%.*]] = icmp uge i32 [[TMP1]], [[Y]]
94 ; CHECK-NEXT: ret i1 [[R]]
96 %x_lb_only = icmp ult i64 %x, 123
97 %y_lb_only = icmp ult i32 %y, 256
98 call void @llvm.assume(i1 %x_lb_only)
99 call void @llvm.assume(i1 %y_lb_only)
100 %xi8 = trunc i64 %x to i8
101 %yi8 = trunc i32 %y to i8
102 %r = icmp ule i8 %yi8, %xi8
106 define i1 @icmp_trunc_x_trunc_y_fail_maybe_dirty_upper(i32 %x, i32 %y) {
107 ; CHECK-LABEL: @icmp_trunc_x_trunc_y_fail_maybe_dirty_upper(
108 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i32 [[X:%.*]], 65536
109 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i32 [[Y:%.*]], 65537
110 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
111 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
112 ; CHECK-NEXT: [[X16:%.*]] = trunc nuw i32 [[X]] to i16
113 ; CHECK-NEXT: [[Y16:%.*]] = trunc i32 [[Y]] to i16
114 ; CHECK-NEXT: [[R:%.*]] = icmp ne i16 [[X16]], [[Y16]]
115 ; CHECK-NEXT: ret i1 [[R]]
117 %x_lb_only = icmp ult i32 %x, 65536
118 %y_lb_only = icmp ult i32 %y, 65537
119 call void @llvm.assume(i1 %x_lb_only)
120 call void @llvm.assume(i1 %y_lb_only)
121 %x16 = trunc i32 %x to i16
122 %y16 = trunc i32 %y to i16
123 %r = icmp ne i16 %x16, %y16
127 define i1 @icmp_trunc_x_trunc_y_fail_maybe_dirty_upper_2(i32 %x, i32 %y) {
128 ; CHECK-LABEL: @icmp_trunc_x_trunc_y_fail_maybe_dirty_upper_2(
129 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp slt i32 [[X:%.*]], 65536
130 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i32 [[Y:%.*]], 65536
131 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
132 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
133 ; CHECK-NEXT: [[X16:%.*]] = trunc i32 [[X]] to i16
134 ; CHECK-NEXT: [[Y16:%.*]] = trunc nuw i32 [[Y]] to i16
135 ; CHECK-NEXT: [[R:%.*]] = icmp ne i16 [[X16]], [[Y16]]
136 ; CHECK-NEXT: ret i1 [[R]]
138 %x_lb_only = icmp slt i32 %x, 65536
139 %y_lb_only = icmp ult i32 %y, 65536
140 call void @llvm.assume(i1 %x_lb_only)
141 call void @llvm.assume(i1 %y_lb_only)
142 %x16 = trunc i32 %x to i16
143 %y16 = trunc i32 %y to i16
144 %r = icmp ne i16 %x16, %y16
148 define i1 @icmp_trunc_x_trunc_y_swap0(i33 %x, i32 %y) {
149 ; CHECK-LABEL: @icmp_trunc_x_trunc_y_swap0(
150 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i33 [[X:%.*]], 65536
151 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i32 [[Y:%.*]], 65536
152 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
153 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
154 ; CHECK-NEXT: [[TMP1:%.*]] = trunc nuw nsw i33 [[X]] to i32
155 ; CHECK-NEXT: [[R:%.*]] = icmp ule i32 [[TMP1]], [[Y]]
156 ; CHECK-NEXT: ret i1 [[R]]
158 %x_lb_only = icmp ult i33 %x, 65536
159 %y_lb_only = icmp ult i32 %y, 65536
160 call void @llvm.assume(i1 %x_lb_only)
161 call void @llvm.assume(i1 %y_lb_only)
162 %x16 = trunc i33 %x to i16
163 %y16 = trunc i32 %y to i16
164 %r = icmp ule i16 %x16, %y16
168 define i1 @icmp_trunc_x_trunc_y_swap1(i33 %x, i32 %y) {
169 ; CHECK-LABEL: @icmp_trunc_x_trunc_y_swap1(
170 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i33 [[X:%.*]], 65536
171 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i32 [[Y:%.*]], 65536
172 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
173 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
174 ; CHECK-NEXT: [[TMP1:%.*]] = trunc nuw nsw i33 [[X]] to i32
175 ; CHECK-NEXT: [[R:%.*]] = icmp uge i32 [[TMP1]], [[Y]]
176 ; CHECK-NEXT: ret i1 [[R]]
178 %x_lb_only = icmp ult i33 %x, 65536
179 %y_lb_only = icmp ult i32 %y, 65536
180 call void @llvm.assume(i1 %x_lb_only)
181 call void @llvm.assume(i1 %y_lb_only)
182 %x16 = trunc i33 %x to i16
183 %y16 = trunc i32 %y to i16
184 %r = icmp ule i16 %y16, %x16
188 define i1 @icmp_trunc_x_zext_y(i32 %x, i8 %y) {
189 ; CHECK-LABEL: @icmp_trunc_x_zext_y(
190 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i32 [[X:%.*]], 65536
191 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
192 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[Y:%.*]] to i32
193 ; CHECK-NEXT: [[R:%.*]] = icmp ult i32 [[TMP1]], [[X]]
194 ; CHECK-NEXT: ret i1 [[R]]
196 %x_lb_only = icmp ult i32 %x, 65536
197 call void @llvm.assume(i1 %x_lb_only)
198 %x16 = trunc i32 %x to i16
199 %y16 = zext i8 %y to i16
200 %r = icmp ugt i16 %x16, %y16
204 define i1 @icmp_trunc_x_zext_y_2(i32 %x, i8 %y) {
205 ; CHECK-LABEL: @icmp_trunc_x_zext_y_2(
206 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i32 [[X:%.*]], 65536
207 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
208 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[Y:%.*]] to i32
209 ; CHECK-NEXT: [[R:%.*]] = icmp uge i32 [[TMP1]], [[X]]
210 ; CHECK-NEXT: ret i1 [[R]]
212 %x_lb_only = icmp ult i32 %x, 65536
213 call void @llvm.assume(i1 %x_lb_only)
214 %x16 = trunc i32 %x to i16
215 %y16 = zext i8 %y to i16
216 %r = icmp uge i16 %y16, %x16
220 define i1 @icmp_trunc_x_zext_y_3(i6 %x, i32 %y) {
221 ; CHECK-LABEL: @icmp_trunc_x_zext_y_3(
222 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i32 [[Y:%.*]], 65536
223 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
224 ; CHECK-NEXT: [[TMP1:%.*]] = zext i6 [[X:%.*]] to i32
225 ; CHECK-NEXT: [[R:%.*]] = icmp ne i32 [[TMP1]], [[Y]]
226 ; CHECK-NEXT: ret i1 [[R]]
228 %y_lb_only = icmp ult i32 %y, 65536
229 call void @llvm.assume(i1 %y_lb_only)
230 %x16 = zext i6 %x to i16
231 %y16 = trunc i32 %y to i16
232 %r = icmp ne i16 %y16, %x16
236 define i1 @icmp_trunc_x_zext_y_3_fail_illegal(i6 %x, i45 %y) {
237 ; CHECK-LABEL: @icmp_trunc_x_zext_y_3_fail_illegal(
238 ; CHECK-NEXT: [[Y_LB_ONLY:%.*]] = icmp ult i45 [[Y:%.*]], 65536
239 ; CHECK-NEXT: call void @llvm.assume(i1 [[Y_LB_ONLY]])
240 ; CHECK-NEXT: [[X16:%.*]] = zext i6 [[X:%.*]] to i16
241 ; CHECK-NEXT: [[Y16:%.*]] = trunc nuw i45 [[Y]] to i16
242 ; CHECK-NEXT: [[R:%.*]] = icmp ne i16 [[Y16]], [[X16]]
243 ; CHECK-NEXT: ret i1 [[R]]
245 %y_lb_only = icmp ult i45 %y, 65536
246 call void @llvm.assume(i1 %y_lb_only)
247 %x16 = zext i6 %x to i16
248 %y16 = trunc i45 %y to i16
249 %r = icmp ne i16 %y16, %x16
253 define i1 @icmp_trunc_x_zext_y_fail_multiuse(i32 %x, i8 %y) {
254 ; CHECK-LABEL: @icmp_trunc_x_zext_y_fail_multiuse(
255 ; CHECK-NEXT: [[X_LB_ONLY:%.*]] = icmp ult i32 [[X:%.*]], 65536
256 ; CHECK-NEXT: call void @llvm.assume(i1 [[X_LB_ONLY]])
257 ; CHECK-NEXT: [[X16:%.*]] = trunc nuw i32 [[X]] to i16
258 ; CHECK-NEXT: [[Y16:%.*]] = zext i8 [[Y:%.*]] to i16
259 ; CHECK-NEXT: call void @use(i16 [[Y16]])
260 ; CHECK-NEXT: [[R:%.*]] = icmp ule i16 [[X16]], [[Y16]]
261 ; CHECK-NEXT: ret i1 [[R]]
263 %x_lb_only = icmp ult i32 %x, 65536
264 call void @llvm.assume(i1 %x_lb_only)
265 %x16 = trunc i32 %x to i16
266 %y16 = zext i8 %y to i16
267 call void @use(i16 %y16)
268 %r = icmp ule i16 %x16, %y16
272 define i1 @trunc_unsigned_nuw(i16 %x, i16 %y) {
273 ; CHECK-LABEL: @trunc_unsigned_nuw(
274 ; CHECK-NEXT: [[C:%.*]] = icmp ult i16 [[X:%.*]], [[Y:%.*]]
275 ; CHECK-NEXT: ret i1 [[C]]
277 %xt = trunc nuw i16 %x to i8
278 %yt = trunc nuw i16 %y to i8
279 %c = icmp ult i8 %xt, %yt
283 define i1 @trunc_unsigned_nsw(i16 %x, i16 %y) {
284 ; CHECK-LABEL: @trunc_unsigned_nsw(
285 ; CHECK-NEXT: [[C:%.*]] = icmp ult i16 [[X:%.*]], [[Y:%.*]]
286 ; CHECK-NEXT: ret i1 [[C]]
288 %xt = trunc nsw i16 %x to i8
289 %yt = trunc nsw i16 %y to i8
290 %c = icmp ult i8 %xt, %yt
294 define i1 @trunc_unsigned_both(i16 %x, i16 %y) {
295 ; CHECK-LABEL: @trunc_unsigned_both(
296 ; CHECK-NEXT: [[C:%.*]] = icmp ult i16 [[X:%.*]], [[Y:%.*]]
297 ; CHECK-NEXT: ret i1 [[C]]
299 %xt = trunc nuw nsw i16 %x to i8
300 %yt = trunc nuw nsw i16 %y to i8
301 %c = icmp ult i8 %xt, %yt
305 define i1 @trunc_unsigned_either(i16 %x, i16 %y) {
306 ; CHECK-LABEL: @trunc_unsigned_either(
307 ; CHECK-NEXT: [[XT:%.*]] = trunc nuw i16 [[X:%.*]] to i8
308 ; CHECK-NEXT: [[YT:%.*]] = trunc nsw i16 [[Y:%.*]] to i8
309 ; CHECK-NEXT: [[C:%.*]] = icmp ult i8 [[XT]], [[YT]]
310 ; CHECK-NEXT: ret i1 [[C]]
312 %xt = trunc nuw i16 %x to i8
313 %yt = trunc nsw i16 %y to i8
314 %c = icmp ult i8 %xt, %yt
318 define i1 @trunc_signed_nuw(i16 %x, i16 %y) {
319 ; CHECK-LABEL: @trunc_signed_nuw(
320 ; CHECK-NEXT: [[XT:%.*]] = trunc nuw i16 [[X:%.*]] to i8
321 ; CHECK-NEXT: [[YT:%.*]] = trunc nuw i16 [[Y:%.*]] to i8
322 ; CHECK-NEXT: [[C:%.*]] = icmp slt i8 [[XT]], [[YT]]
323 ; CHECK-NEXT: ret i1 [[C]]
325 %xt = trunc nuw i16 %x to i8
326 %yt = trunc nuw i16 %y to i8
327 %c = icmp slt i8 %xt, %yt
331 define i1 @trunc_signed_nsw(i16 %x, i16 %y) {
332 ; CHECK-LABEL: @trunc_signed_nsw(
333 ; CHECK-NEXT: [[C:%.*]] = icmp slt i16 [[X:%.*]], [[Y:%.*]]
334 ; CHECK-NEXT: ret i1 [[C]]
336 %xt = trunc nsw i16 %x to i8
337 %yt = trunc nsw i16 %y to i8
338 %c = icmp slt i8 %xt, %yt
342 define i1 @trunc_signed_both(i16 %x, i16 %y) {
343 ; CHECK-LABEL: @trunc_signed_both(
344 ; CHECK-NEXT: [[C:%.*]] = icmp slt i16 [[X:%.*]], [[Y:%.*]]
345 ; CHECK-NEXT: ret i1 [[C]]
347 %xt = trunc nuw nsw i16 %x to i8
348 %yt = trunc nuw nsw i16 %y to i8
349 %c = icmp slt i8 %xt, %yt
353 define i1 @trunc_signed_either(i16 %x, i16 %y) {
354 ; CHECK-LABEL: @trunc_signed_either(
355 ; CHECK-NEXT: [[XT:%.*]] = trunc nuw i16 [[X:%.*]] to i8
356 ; CHECK-NEXT: [[YT:%.*]] = trunc nsw i16 [[Y:%.*]] to i8
357 ; CHECK-NEXT: [[C:%.*]] = icmp slt i8 [[XT]], [[YT]]
358 ; CHECK-NEXT: ret i1 [[C]]
360 %xt = trunc nuw i16 %x to i8
361 %yt = trunc nsw i16 %y to i8
362 %c = icmp slt i8 %xt, %yt
366 define i1 @trunc_equality_nuw(i16 %x, i16 %y) {
367 ; CHECK-LABEL: @trunc_equality_nuw(
368 ; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[X:%.*]], [[Y:%.*]]
369 ; CHECK-NEXT: ret i1 [[C]]
371 %xt = trunc nuw i16 %x to i8
372 %yt = trunc nuw i16 %y to i8
373 %c = icmp eq i8 %xt, %yt
377 define i1 @trunc_equality_nsw(i16 %x, i16 %y) {
378 ; CHECK-LABEL: @trunc_equality_nsw(
379 ; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[X:%.*]], [[Y:%.*]]
380 ; CHECK-NEXT: ret i1 [[C]]
382 %xt = trunc nsw i16 %x to i8
383 %yt = trunc nsw i16 %y to i8
384 %c = icmp eq i8 %xt, %yt
388 define i1 @trunc_equality_both(i16 %x, i16 %y) {
389 ; CHECK-LABEL: @trunc_equality_both(
390 ; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[X:%.*]], [[Y:%.*]]
391 ; CHECK-NEXT: ret i1 [[C]]
393 %xt = trunc nuw nsw i16 %x to i8
394 %yt = trunc nuw nsw i16 %y to i8
395 %c = icmp eq i8 %xt, %yt
399 define i1 @trunc_equality_either(i16 %x, i16 %y) {
400 ; CHECK-LABEL: @trunc_equality_either(
401 ; CHECK-NEXT: [[XT:%.*]] = trunc nuw i16 [[X:%.*]] to i8
402 ; CHECK-NEXT: [[YT:%.*]] = trunc nsw i16 [[Y:%.*]] to i8
403 ; CHECK-NEXT: [[C:%.*]] = icmp eq i8 [[XT]], [[YT]]
404 ; CHECK-NEXT: ret i1 [[C]]
406 %xt = trunc nuw i16 %x to i8
407 %yt = trunc nsw i16 %y to i8
408 %c = icmp eq i8 %xt, %yt
412 define i1 @trunc_unsigned_nuw_zext(i32 %x, i8 %y) {
413 ; CHECK-LABEL: @trunc_unsigned_nuw_zext(
414 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[Y:%.*]] to i32
415 ; CHECK-NEXT: [[C:%.*]] = icmp ugt i32 [[TMP1]], [[X:%.*]]
416 ; CHECK-NEXT: ret i1 [[C]]
418 %xt = trunc nuw i32 %x to i16
419 %ye = zext i8 %y to i16
420 %c = icmp ult i16 %xt, %ye
424 define i1 @trunc_unsigned_nuw_sext(i32 %x, i8 %y) {
425 ; CHECK-LABEL: @trunc_unsigned_nuw_sext(
426 ; CHECK-NEXT: [[XT:%.*]] = trunc nuw i32 [[X:%.*]] to i16
427 ; CHECK-NEXT: [[YE:%.*]] = sext i8 [[Y:%.*]] to i16
428 ; CHECK-NEXT: [[C:%.*]] = icmp ult i16 [[XT]], [[YE]]
429 ; CHECK-NEXT: ret i1 [[C]]
431 %xt = trunc nuw i32 %x to i16
432 %ye = sext i8 %y to i16
433 %c = icmp ult i16 %xt, %ye
437 define i1 @trunc_unsigned_nsw_zext(i32 %x, i8 %y) {
438 ; CHECK-LABEL: @trunc_unsigned_nsw_zext(
439 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[Y:%.*]] to i32
440 ; CHECK-NEXT: [[C:%.*]] = icmp ugt i32 [[TMP1]], [[X:%.*]]
441 ; CHECK-NEXT: ret i1 [[C]]
443 %xt = trunc nsw i32 %x to i16
444 %ye = zext i8 %y to i16
445 %c = icmp ult i16 %xt, %ye
449 define i1 @trunc_unsigned_nsw_sext(i32 %x, i8 %y) {
450 ; CHECK-LABEL: @trunc_unsigned_nsw_sext(
451 ; CHECK-NEXT: [[TMP1:%.*]] = sext i8 [[Y:%.*]] to i32
452 ; CHECK-NEXT: [[C:%.*]] = icmp ugt i32 [[TMP1]], [[X:%.*]]
453 ; CHECK-NEXT: ret i1 [[C]]
455 %xt = trunc nsw i32 %x to i16
456 %ye = sext i8 %y to i16
457 %c = icmp ult i16 %xt, %ye
461 define i1 @trunc_signed_nsw_sext(i32 %x, i8 %y) {
462 ; CHECK-LABEL: @trunc_signed_nsw_sext(
463 ; CHECK-NEXT: [[TMP1:%.*]] = sext i8 [[Y:%.*]] to i32
464 ; CHECK-NEXT: [[C:%.*]] = icmp sgt i32 [[TMP1]], [[X:%.*]]
465 ; CHECK-NEXT: ret i1 [[C]]
467 %xt = trunc nsw i32 %x to i16
468 %ye = sext i8 %y to i16
469 %c = icmp slt i16 %xt, %ye
473 define i1 @trunc_signed_nsw_zext(i32 %x, i8 %y) {
474 ; CHECK-LABEL: @trunc_signed_nsw_zext(
475 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[Y:%.*]] to i32
476 ; CHECK-NEXT: [[C:%.*]] = icmp sgt i32 [[TMP1]], [[X:%.*]]
477 ; CHECK-NEXT: ret i1 [[C]]
479 %xt = trunc nsw i32 %x to i16
480 %ye = zext i8 %y to i16
481 %c = icmp slt i16 %xt, %ye
485 define i1 @trunc_signed_nuw_sext(i32 %x, i8 %y) {
486 ; CHECK-LABEL: @trunc_signed_nuw_sext(
487 ; CHECK-NEXT: [[XT:%.*]] = trunc nuw i32 [[X:%.*]] to i16
488 ; CHECK-NEXT: [[YE:%.*]] = sext i8 [[Y:%.*]] to i16
489 ; CHECK-NEXT: [[C:%.*]] = icmp slt i16 [[XT]], [[YE]]
490 ; CHECK-NEXT: ret i1 [[C]]
492 %xt = trunc nuw i32 %x to i16
493 %ye = sext i8 %y to i16
494 %c = icmp slt i16 %xt, %ye
498 define i1 @trunc_signed_nuw_zext(i32 %x, i8 %y) {
499 ; CHECK-LABEL: @trunc_signed_nuw_zext(
500 ; CHECK-NEXT: [[XT:%.*]] = trunc nuw i32 [[X:%.*]] to i16
501 ; CHECK-NEXT: [[YE:%.*]] = zext i8 [[Y:%.*]] to i16
502 ; CHECK-NEXT: [[C:%.*]] = icmp slt i16 [[XT]], [[YE]]
503 ; CHECK-NEXT: ret i1 [[C]]
505 %xt = trunc nuw i32 %x to i16
506 %ye = zext i8 %y to i16
507 %c = icmp slt i16 %xt, %ye
511 define i1 @trunc_equality_nuw_zext(i32 %x, i8 %y) {
512 ; CHECK-LABEL: @trunc_equality_nuw_zext(
513 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[Y:%.*]] to i32
514 ; CHECK-NEXT: [[C:%.*]] = icmp ne i32 [[TMP1]], [[X:%.*]]
515 ; CHECK-NEXT: ret i1 [[C]]
517 %xt = trunc nuw i32 %x to i16
518 %ye = zext i8 %y to i16
519 %c = icmp ne i16 %xt, %ye
523 define i1 @trunc_equality_nuw_sext(i32 %x, i8 %y) {
524 ; CHECK-LABEL: @trunc_equality_nuw_sext(
525 ; CHECK-NEXT: [[XT:%.*]] = trunc nuw i32 [[X:%.*]] to i16
526 ; CHECK-NEXT: [[YE:%.*]] = sext i8 [[Y:%.*]] to i16
527 ; CHECK-NEXT: [[C:%.*]] = icmp ne i16 [[XT]], [[YE]]
528 ; CHECK-NEXT: ret i1 [[C]]
530 %xt = trunc nuw i32 %x to i16
531 %ye = sext i8 %y to i16
532 %c = icmp ne i16 %xt, %ye
536 define i1 @trunc_equality_nsw_zext(i32 %x, i8 %y) {
537 ; CHECK-LABEL: @trunc_equality_nsw_zext(
538 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[Y:%.*]] to i32
539 ; CHECK-NEXT: [[C:%.*]] = icmp ne i32 [[TMP1]], [[X:%.*]]
540 ; CHECK-NEXT: ret i1 [[C]]
542 %xt = trunc nsw i32 %x to i16
543 %ye = zext i8 %y to i16
544 %c = icmp ne i16 %xt, %ye
548 define i1 @trunc_equality_nsw_sext(i32 %x, i8 %y) {
549 ; CHECK-LABEL: @trunc_equality_nsw_sext(
550 ; CHECK-NEXT: [[TMP1:%.*]] = sext i8 [[Y:%.*]] to i32
551 ; CHECK-NEXT: [[C:%.*]] = icmp ne i32 [[TMP1]], [[X:%.*]]
552 ; CHECK-NEXT: ret i1 [[C]]
554 %xt = trunc nsw i32 %x to i16
555 %ye = sext i8 %y to i16
556 %c = icmp ne i16 %xt, %ye
560 define i1 @trunc_equality_both_sext(i32 %x, i8 %y) {
561 ; CHECK-LABEL: @trunc_equality_both_sext(
562 ; CHECK-NEXT: [[TMP1:%.*]] = sext i8 [[Y:%.*]] to i32
563 ; CHECK-NEXT: [[C:%.*]] = icmp ne i32 [[TMP1]], [[X:%.*]]
564 ; CHECK-NEXT: ret i1 [[C]]
566 %xt = trunc nuw nsw i32 %x to i16
567 %ye = sext i8 %y to i16
568 %c = icmp ne i16 %xt, %ye
572 define i1 @test_eq1(i32 %x, i16 %y) {
573 ; CHECK-LABEL: @test_eq1(
574 ; CHECK-NEXT: [[TMP1:%.*]] = sext i16 [[Y:%.*]] to i32
575 ; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[TMP1]], [[X:%.*]]
576 ; CHECK-NEXT: ret i1 [[COND]]
578 %conv1 = trunc nsw i32 %x to i8
579 %conv2 = trunc nsw i16 %y to i8
580 %cond = icmp eq i8 %conv1, %conv2
584 ; FIXME: It is weird that we generate truncs for test_eq2, but not for test_eq1.
586 define i1 @test_eq2(i32 %x, i16 %y) {
587 ; CHECK-LABEL: @test_eq2(
588 ; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[X:%.*]] to i16
589 ; CHECK-NEXT: [[COND:%.*]] = icmp eq i16 [[TMP1]], [[Y:%.*]]
590 ; CHECK-NEXT: ret i1 [[COND]]
592 %conv1 = trunc nsw i32 %x to i8
593 %conv2 = trunc nsw i16 %y to i8
594 %cond = icmp eq i8 %conv2, %conv1
598 define i1 @test_ult(i32 %x, i16 %y) {
599 ; CHECK-LABEL: @test_ult(
600 ; CHECK-NEXT: [[TMP1:%.*]] = sext i16 [[Y:%.*]] to i32
601 ; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[TMP1]], [[X:%.*]]
602 ; CHECK-NEXT: ret i1 [[COND]]
604 %conv1 = trunc nsw i32 %x to i8
605 %conv2 = trunc nsw i16 %y to i8
606 %cond = icmp ult i8 %conv1, %conv2
610 define i1 @test_slt(i32 %x, i16 %y) {
611 ; CHECK-LABEL: @test_slt(
612 ; CHECK-NEXT: [[TMP1:%.*]] = sext i16 [[Y:%.*]] to i32
613 ; CHECK-NEXT: [[COND:%.*]] = icmp sgt i32 [[TMP1]], [[X:%.*]]
614 ; CHECK-NEXT: ret i1 [[COND]]
616 %conv1 = trunc nsw i32 %x to i8
617 %conv2 = trunc nsw i16 %y to i8
618 %cond = icmp slt i8 %conv1, %conv2
622 define i1 @test_ult_nuw(i32 %x, i16 %y) {
623 ; CHECK-LABEL: @test_ult_nuw(
624 ; CHECK-NEXT: [[TMP1:%.*]] = zext i16 [[Y:%.*]] to i32
625 ; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[TMP1]], [[X:%.*]]
626 ; CHECK-NEXT: ret i1 [[COND]]
628 %conv1 = trunc nuw nsw i32 %x to i8
629 %conv2 = trunc nuw nsw i16 %y to i8
630 %cond = icmp ult i8 %conv1, %conv2
634 define i1 @test_slt_nuw(i32 %x, i16 %y) {
635 ; CHECK-LABEL: @test_slt_nuw(
636 ; CHECK-NEXT: [[TMP1:%.*]] = zext i16 [[Y:%.*]] to i32
637 ; CHECK-NEXT: [[COND:%.*]] = icmp sgt i32 [[TMP1]], [[X:%.*]]
638 ; CHECK-NEXT: ret i1 [[COND]]
640 %conv1 = trunc nuw nsw i32 %x to i8
641 %conv2 = trunc nuw nsw i16 %y to i8
642 %cond = icmp slt i8 %conv1, %conv2
646 @foo = external global i8
647 @bar = external global i8
649 define i1 @constexpr_trunc() {
650 ; CHECK-LABEL: @constexpr_trunc(
651 ; CHECK-NEXT: [[CMP5:%.*]] = icmp ne i16 trunc (i64 sub (i64 sub (i64 ptrtoint (ptr @bar to i64), i64 ptrtoint (ptr @foo to i64)), i64 8) to i16), trunc (i64 sub (i64 sub (i64 0, i64 ptrtoint (ptr @foo to i64)), i64 8) to i16)
652 ; CHECK-NEXT: ret i1 [[CMP5]]
654 %conv = zext i16 trunc (i64 sub (i64 sub nuw nsw (i64 ptrtoint (ptr @bar to i64), i64 ptrtoint (ptr @foo to i64)), i64 8) to i16) to i32
655 %conv1 = zext i16 trunc (i64 sub (i64 sub nuw nsw (i64 0, i64 ptrtoint (ptr @foo to i64)), i64 8) to i16) to i32
656 %cmp5 = icmp ne i32 %conv, %conv1