1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -S -passes=instcombine < %s | FileCheck %s
4 define <2 x i32> @umin_of_nots(<2 x i32> %x, <2 x i32> %y) {
5 ; CHECK-LABEL: @umin_of_nots(
6 ; CHECK-NEXT: [[TMP1:%.*]] = call <2 x i32> @llvm.umax.v2i32(<2 x i32> [[X:%.*]], <2 x i32> [[Y:%.*]])
7 ; CHECK-NEXT: [[MIN:%.*]] = xor <2 x i32> [[TMP1]], splat (i32 -1)
8 ; CHECK-NEXT: ret <2 x i32> [[MIN]]
10 %notx = xor <2 x i32> %x, <i32 -1, i32 -1>
11 %noty = xor <2 x i32> %y, <i32 -1, i32 -1>
12 %cmp = icmp ult <2 x i32> %notx, %noty
13 %min = select <2 x i1> %cmp, <2 x i32> %notx, <2 x i32> %noty
17 define <2 x i32> @smin_of_nots(<2 x i32> %x, <2 x i32> %y) {
18 ; CHECK-LABEL: @smin_of_nots(
19 ; CHECK-NEXT: [[TMP1:%.*]] = call <2 x i32> @llvm.smax.v2i32(<2 x i32> [[X:%.*]], <2 x i32> [[Y:%.*]])
20 ; CHECK-NEXT: [[MIN:%.*]] = xor <2 x i32> [[TMP1]], splat (i32 -1)
21 ; CHECK-NEXT: ret <2 x i32> [[MIN]]
23 %notx = xor <2 x i32> %x, <i32 -1, i32 -1>
24 %noty = xor <2 x i32> %y, <i32 -1, i32 -1>
25 %cmp = icmp sle <2 x i32> %notx, %noty
26 %min = select <2 x i1> %cmp, <2 x i32> %notx, <2 x i32> %noty
30 define i32 @compute_min_2(i32 %x, i32 %y) {
31 ; CHECK-LABEL: @compute_min_2(
32 ; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.smin.i32(i32 [[X:%.*]], i32 [[Y:%.*]])
33 ; CHECK-NEXT: ret i32 [[TMP1]]
35 %not_x = sub i32 -1, %x
36 %not_y = sub i32 -1, %y
37 %cmp = icmp sgt i32 %not_x, %not_y
38 %not_min = select i1 %cmp, i32 %not_x, i32 %not_y
39 %min = sub i32 -1, %not_min
43 declare void @extra_use(i8)
44 define i8 @umin_not_1_extra_use(i8 %x, i8 %y) {
45 ; CHECK-LABEL: @umin_not_1_extra_use(
46 ; CHECK-NEXT: [[NX:%.*]] = xor i8 [[X:%.*]], -1
47 ; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.umax.i8(i8 [[Y:%.*]], i8 [[X]])
48 ; CHECK-NEXT: [[MINXY:%.*]] = xor i8 [[TMP1]], -1
49 ; CHECK-NEXT: call void @extra_use(i8 [[NX]])
50 ; CHECK-NEXT: ret i8 [[MINXY]]
54 %cmpxy = icmp ult i8 %nx, %ny
55 %minxy = select i1 %cmpxy, i8 %nx, i8 %ny
56 call void @extra_use(i8 %nx)
60 define i8 @umin_not_2_extra_use(i8 %x, i8 %y) {
61 ; CHECK-LABEL: @umin_not_2_extra_use(
62 ; CHECK-NEXT: [[NX:%.*]] = xor i8 [[X:%.*]], -1
63 ; CHECK-NEXT: [[NY:%.*]] = xor i8 [[Y:%.*]], -1
64 ; CHECK-NEXT: [[MINXY:%.*]] = call i8 @llvm.umin.i8(i8 [[NX]], i8 [[NY]])
65 ; CHECK-NEXT: call void @extra_use(i8 [[NX]])
66 ; CHECK-NEXT: call void @extra_use(i8 [[NY]])
67 ; CHECK-NEXT: ret i8 [[MINXY]]
71 %cmpxy = icmp ult i8 %nx, %ny
72 %minxy = select i1 %cmpxy, i8 %nx, i8 %ny
73 call void @extra_use(i8 %nx)
74 call void @extra_use(i8 %ny)
78 ; PR35834 - https://bugs.llvm.org/show_bug.cgi?id=35834
80 define i8 @umin3_not(i8 %x, i8 %y, i8 %z) {
81 ; CHECK-LABEL: @umin3_not(
82 ; CHECK-NEXT: [[MINMAXOP:%.*]] = call i8 @llvm.umax.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
83 ; CHECK-NEXT: [[R_V:%.*]] = call i8 @llvm.umax.i8(i8 [[MINMAXOP]], i8 [[Z:%.*]])
84 ; CHECK-NEXT: [[R:%.*]] = xor i8 [[R_V]], -1
85 ; CHECK-NEXT: ret i8 [[R]]
90 %cmpyx = icmp ult i8 %y, %x
91 %cmpxz = icmp ult i8 %nx, %nz
92 %minxz = select i1 %cmpxz, i8 %nx, i8 %nz
93 %cmpyz = icmp ult i8 %ny, %nz
94 %minyz = select i1 %cmpyz, i8 %ny, i8 %nz
95 %r = select i1 %cmpyx, i8 %minxz, i8 %minyz
99 ; PR35875 - https://bugs.llvm.org/show_bug.cgi?id=35875
101 define i8 @umin3_not_more_uses(i8 %x, i8 %y, i8 %z) {
102 ; CHECK-LABEL: @umin3_not_more_uses(
103 ; CHECK-NEXT: [[NX:%.*]] = xor i8 [[X:%.*]], -1
104 ; CHECK-NEXT: [[NY:%.*]] = xor i8 [[Y:%.*]], -1
105 ; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 [[Y]])
106 ; CHECK-NEXT: [[TMP2:%.*]] = call i8 @llvm.umax.i8(i8 [[Z:%.*]], i8 [[TMP1]])
107 ; CHECK-NEXT: [[R:%.*]] = xor i8 [[TMP2]], -1
108 ; CHECK-NEXT: call void @extra_use(i8 [[NX]])
109 ; CHECK-NEXT: call void @extra_use(i8 [[NY]])
110 ; CHECK-NEXT: ret i8 [[R]]
115 %cmpxz = icmp ult i8 %nx, %nz
116 %minxz = select i1 %cmpxz, i8 %nx, i8 %nz
117 %cmpyz = icmp ult i8 %ny, %nz
118 %minyz = select i1 %cmpyz, i8 %ny, i8 %nz
119 %cmpyx = icmp ult i8 %y, %x
120 %r = select i1 %cmpyx, i8 %minxz, i8 %minyz
121 call void @extra_use(i8 %nx)
122 call void @extra_use(i8 %ny)
126 declare void @use8(i8)
128 define i8 @umin3_not_all_ops_extra_uses(i8 %x, i8 %y, i8 %z) {
129 ; CHECK-LABEL: @umin3_not_all_ops_extra_uses(
130 ; CHECK-NEXT: [[XN:%.*]] = xor i8 [[X:%.*]], -1
131 ; CHECK-NEXT: [[YN:%.*]] = xor i8 [[Y:%.*]], -1
132 ; CHECK-NEXT: [[ZN:%.*]] = xor i8 [[Z:%.*]], -1
133 ; CHECK-NEXT: [[MINXZ:%.*]] = call i8 @llvm.umin.i8(i8 [[XN]], i8 [[ZN]])
134 ; CHECK-NEXT: [[MINXYZ:%.*]] = call i8 @llvm.umin.i8(i8 [[MINXZ]], i8 [[YN]])
135 ; CHECK-NEXT: call void @use8(i8 [[XN]])
136 ; CHECK-NEXT: call void @use8(i8 [[YN]])
137 ; CHECK-NEXT: call void @use8(i8 [[ZN]])
138 ; CHECK-NEXT: ret i8 [[MINXYZ]]
143 %cmpxz = icmp ult i8 %xn, %zn
144 %minxz = select i1 %cmpxz, i8 %xn, i8 %zn
145 %cmpxyz = icmp ult i8 %minxz, %yn
146 %minxyz = select i1 %cmpxyz, i8 %minxz, i8 %yn
147 call void @use8(i8 %xn)
148 call void @use8(i8 %yn)
149 call void @use8(i8 %zn)
153 define i32 @compute_min_3(i32 %x, i32 %y, i32 %z) {
154 ; CHECK-LABEL: @compute_min_3(
155 ; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.smin.i32(i32 [[X:%.*]], i32 [[Y:%.*]])
156 ; CHECK-NEXT: [[TMP2:%.*]] = call i32 @llvm.smin.i32(i32 [[TMP1]], i32 [[Z:%.*]])
157 ; CHECK-NEXT: ret i32 [[TMP2]]
159 %not_x = sub i32 -1, %x
160 %not_y = sub i32 -1, %y
161 %not_z = sub i32 -1, %z
162 %cmp_1 = icmp sgt i32 %not_x, %not_y
163 %not_min_1 = select i1 %cmp_1, i32 %not_x, i32 %not_y
164 %cmp_2 = icmp sgt i32 %not_min_1, %not_z
165 %not_min_2 = select i1 %cmp_2, i32 %not_min_1, i32 %not_z
166 %min = sub i32 -1, %not_min_2
170 ; Don't increase the critical path by moving the 'not' op after the 'select'.
172 define i32 @compute_min_arithmetic(i32 %x, i32 %y) {
173 ; CHECK-LABEL: @compute_min_arithmetic(
174 ; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[X:%.*]], -4
175 ; CHECK-NEXT: [[TMP2:%.*]] = call i32 @llvm.smin.i32(i32 [[Y:%.*]], i32 [[TMP1]])
176 ; CHECK-NEXT: [[NOT_MIN:%.*]] = xor i32 [[TMP2]], -1
177 ; CHECK-NEXT: ret i32 [[NOT_MIN]]
179 %not_value = sub i32 3, %x
180 %not_y = sub i32 -1, %y
181 %cmp = icmp sgt i32 %not_value, %not_y
182 %not_min = select i1 %cmp, i32 %not_value, i32 %not_y
186 declare void @fake_use(i32)
188 define i32 @compute_min_pessimization(i32 %x, i32 %y) {
189 ; CHECK-LABEL: @compute_min_pessimization(
190 ; CHECK-NEXT: [[NOT_VALUE:%.*]] = sub i32 3, [[X:%.*]]
191 ; CHECK-NEXT: call void @fake_use(i32 [[NOT_VALUE]])
192 ; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[X]], -4
193 ; CHECK-NEXT: [[MIN:%.*]] = call i32 @llvm.smin.i32(i32 [[Y:%.*]], i32 [[TMP1]])
194 ; CHECK-NEXT: ret i32 [[MIN]]
196 %not_value = sub i32 3, %x
197 call void @fake_use(i32 %not_value)
198 %not_y = sub i32 -1, %y
199 %cmp = icmp sgt i32 %not_value, %not_y
200 %not_min = select i1 %cmp, i32 %not_value, i32 %not_y
201 %min = sub i32 -1, %not_min
205 define i32 @max_of_nots(i32 %x, i32 %y) {
206 ; CHECK-LABEL: @max_of_nots(
207 ; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.smax.i32(i32 [[Y:%.*]], i32 0)
208 ; CHECK-NEXT: [[TMP2:%.*]] = call i32 @llvm.smin.i32(i32 [[TMP1]], i32 [[X:%.*]])
209 ; CHECK-NEXT: [[SMAX96:%.*]] = xor i32 [[TMP2]], -1
210 ; CHECK-NEXT: ret i32 [[SMAX96]]
212 %c0 = icmp sgt i32 %y, 0
213 %xor_y = xor i32 %y, -1
214 %s0 = select i1 %c0, i32 %xor_y, i32 -1
215 %xor_x = xor i32 %x, -1
216 %c1 = icmp slt i32 %s0, %xor_x
217 %smax96 = select i1 %c1, i32 %xor_x, i32 %s0
221 ; negative test case (i.e. can not simplify) : ABS(MIN(NOT x,y))
222 define i32 @abs_of_min_of_not(i32 %x, i32 %y) {
223 ; CHECK-LABEL: @abs_of_min_of_not(
224 ; CHECK-NEXT: [[TMP1:%.*]] = sub i32 -3, [[Y:%.*]]
225 ; CHECK-NEXT: [[TMP2:%.*]] = call i32 @llvm.smax.i32(i32 [[X:%.*]], i32 [[TMP1]])
226 ; CHECK-NEXT: [[MIN:%.*]] = xor i32 [[TMP2]], -1
227 ; CHECK-NEXT: [[ABS:%.*]] = call i32 @llvm.abs.i32(i32 [[MIN]], i1 false)
228 ; CHECK-NEXT: ret i32 [[ABS]]
231 %xord = xor i32 %x, -1
232 %yadd = add i32 %y, 2
233 %cond.i = icmp sge i32 %yadd, %xord
234 %min = select i1 %cond.i, i32 %xord, i32 %yadd
235 %cmp2 = icmp sgt i32 %min, -1
236 %sub = sub i32 0, %min
237 %abs = select i1 %cmp2, i32 %min, i32 %sub
241 define <2 x i32> @max_of_nots_vec(<2 x i32> %x, <2 x i32> %y) {
242 ; CHECK-LABEL: @max_of_nots_vec(
243 ; CHECK-NEXT: [[TMP1:%.*]] = call <2 x i32> @llvm.smax.v2i32(<2 x i32> [[Y:%.*]], <2 x i32> zeroinitializer)
244 ; CHECK-NEXT: [[TMP2:%.*]] = call <2 x i32> @llvm.smin.v2i32(<2 x i32> [[TMP1]], <2 x i32> [[X:%.*]])
245 ; CHECK-NEXT: [[SMAX96:%.*]] = xor <2 x i32> [[TMP2]], splat (i32 -1)
246 ; CHECK-NEXT: ret <2 x i32> [[SMAX96]]
248 %c0 = icmp sgt <2 x i32> %y, zeroinitializer
249 %xor_y = xor <2 x i32> %y, <i32 -1, i32 -1>
250 %s0 = select <2 x i1> %c0, <2 x i32> %xor_y, <2 x i32> <i32 -1, i32 -1>
251 %xor_x = xor <2 x i32> %x, <i32 -1, i32 -1>
252 %c1 = icmp slt <2 x i32> %s0, %xor_x
253 %smax96 = select <2 x i1> %c1, <2 x i32> %xor_x, <2 x i32> %s0
254 ret <2 x i32> %smax96
257 define <2 x i37> @max_of_nots_weird_type_vec(<2 x i37> %x, <2 x i37> %y) {
258 ; CHECK-LABEL: @max_of_nots_weird_type_vec(
259 ; CHECK-NEXT: [[TMP1:%.*]] = call <2 x i37> @llvm.smax.v2i37(<2 x i37> [[Y:%.*]], <2 x i37> zeroinitializer)
260 ; CHECK-NEXT: [[TMP2:%.*]] = call <2 x i37> @llvm.smin.v2i37(<2 x i37> [[TMP1]], <2 x i37> [[X:%.*]])
261 ; CHECK-NEXT: [[SMAX96:%.*]] = xor <2 x i37> [[TMP2]], splat (i37 -1)
262 ; CHECK-NEXT: ret <2 x i37> [[SMAX96]]
264 %c0 = icmp sgt <2 x i37> %y, zeroinitializer
265 %xor_y = xor <2 x i37> %y, <i37 -1, i37 -1>
266 %s0 = select <2 x i1> %c0, <2 x i37> %xor_y, <2 x i37> <i37 -1, i37 -1>
267 %xor_x = xor <2 x i37> %x, <i37 -1, i37 -1>
268 %c1 = icmp slt <2 x i37> %s0, %xor_x
269 %smax96 = select <2 x i1> %c1, <2 x i37> %xor_x, <2 x i37> %s0
270 ret <2 x i37> %smax96
273 ; max(min(%a, -1), -1) == -1
274 define i32 @max_of_min(i32 %a) {
275 ; CHECK-LABEL: @max_of_min(
276 ; CHECK-NEXT: ret i32 -1
278 %not_a = xor i32 %a, -1
279 %c0 = icmp sgt i32 %a, 0
280 %s0 = select i1 %c0, i32 %not_a, i32 -1
281 %c1 = icmp sgt i32 %s0, -1
282 %s1 = select i1 %c1, i32 %s0, i32 -1
286 ; max(min(%a, -1), -1) == -1 (swap predicate and select ops)
287 define i32 @max_of_min_swap(i32 %a) {
288 ; CHECK-LABEL: @max_of_min_swap(
289 ; CHECK-NEXT: ret i32 -1
291 %not_a = xor i32 %a, -1
292 %c0 = icmp slt i32 %a, 0
293 %s0 = select i1 %c0, i32 -1, i32 %not_a
294 %c1 = icmp sgt i32 %s0, -1
295 %s1 = select i1 %c1, i32 %s0, i32 -1
299 ; min(max(%a, -1), -1) == -1
300 define i32 @min_of_max(i32 %a) {
301 ; CHECK-LABEL: @min_of_max(
302 ; CHECK-NEXT: ret i32 -1
304 %not_a = xor i32 %a, -1
305 %c0 = icmp slt i32 %a, 0
306 %s0 = select i1 %c0, i32 %not_a, i32 -1
307 %c1 = icmp slt i32 %s0, -1
308 %s1 = select i1 %c1, i32 %s0, i32 -1
312 ; min(max(%a, -1), -1) == -1 (swap predicate and select ops)
313 define i32 @min_of_max_swap(i32 %a) {
314 ; CHECK-LABEL: @min_of_max_swap(
315 ; CHECK-NEXT: ret i32 -1
317 %not_a = xor i32 %a, -1
318 %c0 = icmp sgt i32 %a, 0
319 %s0 = select i1 %c0, i32 -1, i32 %not_a
320 %c1 = icmp slt i32 %s0, -1
321 %s1 = select i1 %c1, i32 %s0, i32 -1
325 define <2 x i32> @max_of_min_vec(<2 x i32> %a) {
326 ; CHECK-LABEL: @max_of_min_vec(
327 ; CHECK-NEXT: ret <2 x i32> splat (i32 -1)
329 %not_a = xor <2 x i32> %a, <i32 -1, i32 -1>
330 %c0 = icmp sgt <2 x i32> %a, zeroinitializer
331 %s0 = select <2 x i1> %c0, <2 x i32> %not_a, <2 x i32> <i32 -1, i32 -1>
332 %c1 = icmp sgt <2 x i32> %s0, <i32 -1, i32 -1>
333 %s1 = select <2 x i1> %c1, <2 x i32> %s0, <2 x i32> <i32 -1, i32 -1>
337 declare void @use(i8, i8, i8, i8)
339 define void @cmyk(i8 %r, i8 %g, i8 %b) {
340 ; CHECK-LABEL: @cmyk(
341 ; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.smax.i8(i8 [[R:%.*]], i8 [[G:%.*]])
342 ; CHECK-NEXT: [[TMP2:%.*]] = call i8 @llvm.smax.i8(i8 [[B:%.*]], i8 [[TMP1]])
343 ; CHECK-NEXT: [[K:%.*]] = xor i8 [[TMP2]], -1
344 ; CHECK-NEXT: [[CK:%.*]] = sub i8 [[TMP2]], [[R]]
345 ; CHECK-NEXT: [[MK:%.*]] = sub i8 [[TMP2]], [[G]]
346 ; CHECK-NEXT: [[YK:%.*]] = sub i8 [[TMP2]], [[B]]
347 ; CHECK-NEXT: call void @use(i8 [[CK]], i8 [[MK]], i8 [[YK]], i8 [[K]])
348 ; CHECK-NEXT: ret void
350 %notr = xor i8 %r, -1
351 %notg = xor i8 %g, -1
352 %notb = xor i8 %b, -1
353 %cmp_gr = icmp slt i8 %g, %r
354 %cmp_br = icmp slt i8 %notr, %notb
355 %min_br = select i1 %cmp_br, i8 %notr, i8 %notb
356 %cmp_gb = icmp slt i8 %notg, %notb
357 %min_gb = select i1 %cmp_gb, i8 %notg, i8 %notb
358 %k = select i1 %cmp_gr, i8 %min_br, i8 %min_gb
359 %ck = sub i8 %notr, %k
360 %mk = sub i8 %notg, %k
361 %yk = sub i8 %notb, %k
362 call void @use(i8 %ck, i8 %mk, i8 %yk, i8 %k)
366 define void @cmyk2(i8 %r, i8 %g, i8 %b) {
367 ; CHECK-LABEL: @cmyk2(
368 ; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.smax.i8(i8 [[R:%.*]], i8 [[G:%.*]])
369 ; CHECK-NEXT: [[TMP2:%.*]] = call i8 @llvm.smax.i8(i8 [[B:%.*]], i8 [[TMP1]])
370 ; CHECK-NEXT: [[K:%.*]] = xor i8 [[TMP2]], -1
371 ; CHECK-NEXT: [[CK:%.*]] = sub i8 [[TMP2]], [[R]]
372 ; CHECK-NEXT: [[MK:%.*]] = sub i8 [[TMP2]], [[G]]
373 ; CHECK-NEXT: [[YK:%.*]] = sub i8 [[TMP2]], [[B]]
374 ; CHECK-NEXT: call void @use(i8 [[CK]], i8 [[MK]], i8 [[YK]], i8 [[K]])
375 ; CHECK-NEXT: ret void
377 %notr = xor i8 %r, -1
378 %notg = xor i8 %g, -1
379 %notb = xor i8 %b, -1
380 %cmp_gr = icmp slt i8 %g, %r
381 %cmp_br = icmp slt i8 %b, %r
382 %min_br = select i1 %cmp_br, i8 %notr, i8 %notb
383 %cmp_bg = icmp slt i8 %b, %g
384 %min_bg = select i1 %cmp_bg, i8 %notg, i8 %notb
385 %k = select i1 %cmp_gr, i8 %min_br, i8 %min_bg
386 %ck = sub i8 %notr, %k
387 %mk = sub i8 %notg, %k
388 %yk = sub i8 %notb, %k
389 call void @use(i8 %ck, i8 %mk, i8 %yk, i8 %k)
393 define void @cmyk3(i8 %r, i8 %g, i8 %b) {
394 ; CHECK-LABEL: @cmyk3(
395 ; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.smax.i8(i8 [[R:%.*]], i8 [[G:%.*]])
396 ; CHECK-NEXT: [[TMP2:%.*]] = call i8 @llvm.smax.i8(i8 [[B:%.*]], i8 [[TMP1]])
397 ; CHECK-NEXT: [[K:%.*]] = xor i8 [[TMP2]], -1
398 ; CHECK-NEXT: [[CK:%.*]] = sub i8 [[TMP2]], [[R]]
399 ; CHECK-NEXT: [[MK:%.*]] = sub i8 [[TMP2]], [[G]]
400 ; CHECK-NEXT: [[YK:%.*]] = sub i8 [[TMP2]], [[B]]
401 ; CHECK-NEXT: call void @use(i8 [[CK]], i8 [[MK]], i8 [[YK]], i8 [[K]])
402 ; CHECK-NEXT: ret void
404 %notr = xor i8 %r, -1
405 %notg = xor i8 %g, -1
406 %notb = xor i8 %b, -1
407 %cmp_gr = icmp slt i8 %g, %r
408 %cmp_br = icmp sgt i8 %r, %b
409 %min_br = select i1 %cmp_br, i8 %notr, i8 %notb
410 %cmp_bg = icmp slt i8 %b, %g
411 %min_bg = select i1 %cmp_bg, i8 %notg, i8 %notb
412 %k = select i1 %cmp_gr, i8 %min_br, i8 %min_bg
413 %ck = sub i8 %notr, %k
414 %mk = sub i8 %notg, %k
415 %yk = sub i8 %notb, %k
416 call void @use(i8 %ck, i8 %mk, i8 %yk, i8 %k)
420 define void @cmyk4(i8 %r, i8 %g, i8 %b) {
421 ; CHECK-LABEL: @cmyk4(
422 ; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.smax.i8(i8 [[R:%.*]], i8 [[G:%.*]])
423 ; CHECK-NEXT: [[TMP2:%.*]] = call i8 @llvm.smax.i8(i8 [[B:%.*]], i8 [[TMP1]])
424 ; CHECK-NEXT: [[K:%.*]] = xor i8 [[TMP2]], -1
425 ; CHECK-NEXT: [[CK:%.*]] = sub i8 [[TMP2]], [[R]]
426 ; CHECK-NEXT: [[MK:%.*]] = sub i8 [[TMP2]], [[G]]
427 ; CHECK-NEXT: [[YK:%.*]] = sub i8 [[TMP2]], [[B]]
428 ; CHECK-NEXT: call void @use(i8 [[CK]], i8 [[MK]], i8 [[YK]], i8 [[K]])
429 ; CHECK-NEXT: ret void
431 %notr = xor i8 %r, -1
432 %notg = xor i8 %g, -1
433 %notb = xor i8 %b, -1
434 %cmp_gr = icmp slt i8 %g, %r
435 %cmp_br = icmp sgt i8 %r, %b
436 %min_br = select i1 %cmp_br, i8 %notr, i8 %notb
437 %cmp_bg = icmp sgt i8 %g, %b
438 %min_bg = select i1 %cmp_bg, i8 %notg, i8 %notb
439 %k = select i1 %cmp_gr, i8 %min_br, i8 %min_bg
440 %ck = sub i8 %notr, %k
441 %mk = sub i8 %notg, %k
442 %yk = sub i8 %notb, %k
443 call void @use(i8 %ck, i8 %mk, i8 %yk, i8 %k)
447 define void @cmyk5(i8 %r, i8 %g, i8 %b) {
448 ; CHECK-LABEL: @cmyk5(
449 ; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.smax.i8(i8 [[R:%.*]], i8 [[G:%.*]])
450 ; CHECK-NEXT: [[TMP2:%.*]] = call i8 @llvm.smax.i8(i8 [[B:%.*]], i8 [[TMP1]])
451 ; CHECK-NEXT: [[K:%.*]] = xor i8 [[TMP2]], -1
452 ; CHECK-NEXT: [[CK:%.*]] = sub i8 [[TMP2]], [[R]]
453 ; CHECK-NEXT: [[MK:%.*]] = sub i8 [[TMP2]], [[G]]
454 ; CHECK-NEXT: [[YK:%.*]] = sub i8 [[TMP2]], [[B]]
455 ; CHECK-NEXT: call void @use(i8 [[CK]], i8 [[MK]], i8 [[YK]], i8 [[K]])
456 ; CHECK-NEXT: ret void
458 %notr = xor i8 %r, -1
459 %notg = xor i8 %g, -1
460 %notb = xor i8 %b, -1
461 %cmp_gr = icmp sgt i8 %r, %g
462 %cmp_br = icmp sgt i8 %r, %b
463 %min_br = select i1 %cmp_br, i8 %notr, i8 %notb
464 %cmp_bg = icmp sgt i8 %g, %b
465 %min_bg = select i1 %cmp_bg, i8 %notg, i8 %notb
466 %k = select i1 %cmp_gr, i8 %min_br, i8 %min_bg
467 %ck = sub i8 %notr, %k
468 %mk = sub i8 %notg, %k
469 %yk = sub i8 %notb, %k
470 call void @use(i8 %ck, i8 %mk, i8 %yk, i8 %k)
474 define void @cmyk6(i8 %r, i8 %g, i8 %b) {
475 ; CHECK-LABEL: @cmyk6(
476 ; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.umax.i8(i8 [[R:%.*]], i8 [[G:%.*]])
477 ; CHECK-NEXT: [[TMP2:%.*]] = call i8 @llvm.umax.i8(i8 [[B:%.*]], i8 [[TMP1]])
478 ; CHECK-NEXT: [[K:%.*]] = xor i8 [[TMP2]], -1
479 ; CHECK-NEXT: [[CK:%.*]] = sub i8 [[TMP2]], [[R]]
480 ; CHECK-NEXT: [[MK:%.*]] = sub i8 [[TMP2]], [[G]]
481 ; CHECK-NEXT: [[YK:%.*]] = sub i8 [[TMP2]], [[B]]
482 ; CHECK-NEXT: tail call void @use(i8 [[CK]], i8 [[MK]], i8 [[YK]], i8 [[K]])
483 ; CHECK-NEXT: ret void
485 %notr = xor i8 %r, -1
486 %notg = xor i8 %g, -1
487 %notb = xor i8 %b, -1
488 %cmp_gr = icmp ult i8 %g, %r
489 %cmp_br = icmp ult i8 %b, %r
490 %sel_rb = select i1 %cmp_br, i8 %notr, i8 %notb
491 %cmp_bg = icmp ult i8 %b, %g
492 %sel_gb = select i1 %cmp_bg, i8 %notg, i8 %notb
493 %k = select i1 %cmp_gr, i8 %sel_rb, i8 %sel_gb
494 %ck = sub i8 %notr, %k
495 %mk = sub i8 %notg, %k
496 %yk = sub i8 %notb, %k
497 tail call void @use(i8 %ck, i8 %mk, i8 %yk, i8 %k)