1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s
4 ; These test cases are inspired by C++2a std::midpoint().
5 ; See https://bugs.llvm.org/show_bug.cgi?id=40965
7 ; ---------------------------------------------------------------------------- ;
9 ; ---------------------------------------------------------------------------- ;
11 ; Values come from regs
13 define i32 @scalar_i32_signed_reg_reg(i32 %a1, i32 %a2) nounwind {
14 ; CHECK-LABEL: scalar_i32_signed_reg_reg:
16 ; CHECK-NEXT: cmp w0, w1
17 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
18 ; CHECK-NEXT: csel w9, w1, w0, gt
19 ; CHECK-NEXT: csel w10, w0, w1, gt
20 ; CHECK-NEXT: cneg w8, w8, le
21 ; CHECK-NEXT: sub w9, w10, w9
22 ; CHECK-NEXT: lsr w9, w9, #1
23 ; CHECK-NEXT: madd w0, w9, w8, w0
25 %t3 = icmp sgt i32 %a1, %a2 ; signed
26 %t4 = select i1 %t3, i32 -1, i32 1
27 %t5 = select i1 %t3, i32 %a2, i32 %a1
28 %t6 = select i1 %t3, i32 %a1, i32 %a2
29 %t7 = sub i32 %t6, %t5
31 %t9 = mul nsw i32 %t8, %t4 ; signed
32 %a10 = add nsw i32 %t9, %a1 ; signed
36 define i32 @scalar_i32_unsigned_reg_reg(i32 %a1, i32 %a2) nounwind {
37 ; CHECK-LABEL: scalar_i32_unsigned_reg_reg:
39 ; CHECK-NEXT: cmp w0, w1
40 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
41 ; CHECK-NEXT: csel w9, w1, w0, hi
42 ; CHECK-NEXT: csel w10, w0, w1, hi
43 ; CHECK-NEXT: cneg w8, w8, ls
44 ; CHECK-NEXT: sub w9, w10, w9
45 ; CHECK-NEXT: lsr w9, w9, #1
46 ; CHECK-NEXT: madd w0, w9, w8, w0
48 %t3 = icmp ugt i32 %a1, %a2
49 %t4 = select i1 %t3, i32 -1, i32 1
50 %t5 = select i1 %t3, i32 %a2, i32 %a1
51 %t6 = select i1 %t3, i32 %a1, i32 %a2
52 %t7 = sub i32 %t6, %t5
54 %t9 = mul i32 %t8, %t4
55 %a10 = add i32 %t9, %a1
59 ; Values are loaded. Only check signed case.
61 define i32 @scalar_i32_signed_mem_reg(ptr %a1_addr, i32 %a2) nounwind {
62 ; CHECK-LABEL: scalar_i32_signed_mem_reg:
64 ; CHECK-NEXT: ldr w9, [x0]
65 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
66 ; CHECK-NEXT: cmp w9, w1
67 ; CHECK-NEXT: csel w10, w1, w9, gt
68 ; CHECK-NEXT: csel w11, w9, w1, gt
69 ; CHECK-NEXT: cneg w8, w8, le
70 ; CHECK-NEXT: sub w10, w11, w10
71 ; CHECK-NEXT: lsr w10, w10, #1
72 ; CHECK-NEXT: madd w0, w10, w8, w9
74 %a1 = load i32, ptr %a1_addr
75 %t3 = icmp sgt i32 %a1, %a2 ; signed
76 %t4 = select i1 %t3, i32 -1, i32 1
77 %t5 = select i1 %t3, i32 %a2, i32 %a1
78 %t6 = select i1 %t3, i32 %a1, i32 %a2
79 %t7 = sub i32 %t6, %t5
81 %t9 = mul nsw i32 %t8, %t4 ; signed
82 %a10 = add nsw i32 %t9, %a1 ; signed
86 define i32 @scalar_i32_signed_reg_mem(i32 %a1, ptr %a2_addr) nounwind {
87 ; CHECK-LABEL: scalar_i32_signed_reg_mem:
89 ; CHECK-NEXT: ldr w9, [x1]
90 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
91 ; CHECK-NEXT: cmp w0, w9
92 ; CHECK-NEXT: csel w10, w9, w0, gt
93 ; CHECK-NEXT: csel w9, w0, w9, gt
94 ; CHECK-NEXT: cneg w8, w8, le
95 ; CHECK-NEXT: sub w9, w9, w10
96 ; CHECK-NEXT: lsr w9, w9, #1
97 ; CHECK-NEXT: madd w0, w9, w8, w0
99 %a2 = load i32, ptr %a2_addr
100 %t3 = icmp sgt i32 %a1, %a2 ; signed
101 %t4 = select i1 %t3, i32 -1, i32 1
102 %t5 = select i1 %t3, i32 %a2, i32 %a1
103 %t6 = select i1 %t3, i32 %a1, i32 %a2
104 %t7 = sub i32 %t6, %t5
105 %t8 = lshr i32 %t7, 1
106 %t9 = mul nsw i32 %t8, %t4 ; signed
107 %a10 = add nsw i32 %t9, %a1 ; signed
111 define i32 @scalar_i32_signed_mem_mem(ptr %a1_addr, ptr %a2_addr) nounwind {
112 ; CHECK-LABEL: scalar_i32_signed_mem_mem:
114 ; CHECK-NEXT: ldr w9, [x0]
115 ; CHECK-NEXT: ldr w10, [x1]
116 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
117 ; CHECK-NEXT: cmp w9, w10
118 ; CHECK-NEXT: csel w11, w10, w9, gt
119 ; CHECK-NEXT: csel w10, w9, w10, gt
120 ; CHECK-NEXT: cneg w8, w8, le
121 ; CHECK-NEXT: sub w10, w10, w11
122 ; CHECK-NEXT: lsr w10, w10, #1
123 ; CHECK-NEXT: madd w0, w10, w8, w9
125 %a1 = load i32, ptr %a1_addr
126 %a2 = load i32, ptr %a2_addr
127 %t3 = icmp sgt i32 %a1, %a2 ; signed
128 %t4 = select i1 %t3, i32 -1, i32 1
129 %t5 = select i1 %t3, i32 %a2, i32 %a1
130 %t6 = select i1 %t3, i32 %a1, i32 %a2
131 %t7 = sub i32 %t6, %t5
132 %t8 = lshr i32 %t7, 1
133 %t9 = mul nsw i32 %t8, %t4 ; signed
134 %a10 = add nsw i32 %t9, %a1 ; signed
138 ; ---------------------------------------------------------------------------- ;
140 ; ---------------------------------------------------------------------------- ;
142 ; Values come from regs
144 define i64 @scalar_i64_signed_reg_reg(i64 %a1, i64 %a2) nounwind {
145 ; CHECK-LABEL: scalar_i64_signed_reg_reg:
147 ; CHECK-NEXT: cmp x0, x1
148 ; CHECK-NEXT: mov x8, #-1 // =0xffffffffffffffff
149 ; CHECK-NEXT: csel x9, x1, x0, gt
150 ; CHECK-NEXT: csel x10, x0, x1, gt
151 ; CHECK-NEXT: cneg x8, x8, le
152 ; CHECK-NEXT: sub x9, x10, x9
153 ; CHECK-NEXT: lsr x9, x9, #1
154 ; CHECK-NEXT: madd x0, x9, x8, x0
156 %t3 = icmp sgt i64 %a1, %a2 ; signed
157 %t4 = select i1 %t3, i64 -1, i64 1
158 %t5 = select i1 %t3, i64 %a2, i64 %a1
159 %t6 = select i1 %t3, i64 %a1, i64 %a2
160 %t7 = sub i64 %t6, %t5
161 %t8 = lshr i64 %t7, 1
162 %t9 = mul nsw i64 %t8, %t4 ; signed
163 %a10 = add nsw i64 %t9, %a1 ; signed
167 define i64 @scalar_i64_unsigned_reg_reg(i64 %a1, i64 %a2) nounwind {
168 ; CHECK-LABEL: scalar_i64_unsigned_reg_reg:
170 ; CHECK-NEXT: cmp x0, x1
171 ; CHECK-NEXT: mov x8, #-1 // =0xffffffffffffffff
172 ; CHECK-NEXT: csel x9, x1, x0, hi
173 ; CHECK-NEXT: csel x10, x0, x1, hi
174 ; CHECK-NEXT: cneg x8, x8, ls
175 ; CHECK-NEXT: sub x9, x10, x9
176 ; CHECK-NEXT: lsr x9, x9, #1
177 ; CHECK-NEXT: madd x0, x9, x8, x0
179 %t3 = icmp ugt i64 %a1, %a2
180 %t4 = select i1 %t3, i64 -1, i64 1
181 %t5 = select i1 %t3, i64 %a2, i64 %a1
182 %t6 = select i1 %t3, i64 %a1, i64 %a2
183 %t7 = sub i64 %t6, %t5
184 %t8 = lshr i64 %t7, 1
185 %t9 = mul i64 %t8, %t4
186 %a10 = add i64 %t9, %a1
190 ; Values are loaded. Only check signed case.
192 define i64 @scalar_i64_signed_mem_reg(ptr %a1_addr, i64 %a2) nounwind {
193 ; CHECK-LABEL: scalar_i64_signed_mem_reg:
195 ; CHECK-NEXT: ldr x9, [x0]
196 ; CHECK-NEXT: mov x8, #-1 // =0xffffffffffffffff
197 ; CHECK-NEXT: cmp x9, x1
198 ; CHECK-NEXT: csel x10, x1, x9, gt
199 ; CHECK-NEXT: csel x11, x9, x1, gt
200 ; CHECK-NEXT: cneg x8, x8, le
201 ; CHECK-NEXT: sub x10, x11, x10
202 ; CHECK-NEXT: lsr x10, x10, #1
203 ; CHECK-NEXT: madd x0, x10, x8, x9
205 %a1 = load i64, ptr %a1_addr
206 %t3 = icmp sgt i64 %a1, %a2 ; signed
207 %t4 = select i1 %t3, i64 -1, i64 1
208 %t5 = select i1 %t3, i64 %a2, i64 %a1
209 %t6 = select i1 %t3, i64 %a1, i64 %a2
210 %t7 = sub i64 %t6, %t5
211 %t8 = lshr i64 %t7, 1
212 %t9 = mul nsw i64 %t8, %t4 ; signed
213 %a10 = add nsw i64 %t9, %a1 ; signed
217 define i64 @scalar_i64_signed_reg_mem(i64 %a1, ptr %a2_addr) nounwind {
218 ; CHECK-LABEL: scalar_i64_signed_reg_mem:
220 ; CHECK-NEXT: ldr x9, [x1]
221 ; CHECK-NEXT: mov x8, #-1 // =0xffffffffffffffff
222 ; CHECK-NEXT: cmp x0, x9
223 ; CHECK-NEXT: csel x10, x9, x0, gt
224 ; CHECK-NEXT: csel x9, x0, x9, gt
225 ; CHECK-NEXT: cneg x8, x8, le
226 ; CHECK-NEXT: sub x9, x9, x10
227 ; CHECK-NEXT: lsr x9, x9, #1
228 ; CHECK-NEXT: madd x0, x9, x8, x0
230 %a2 = load i64, ptr %a2_addr
231 %t3 = icmp sgt i64 %a1, %a2 ; signed
232 %t4 = select i1 %t3, i64 -1, i64 1
233 %t5 = select i1 %t3, i64 %a2, i64 %a1
234 %t6 = select i1 %t3, i64 %a1, i64 %a2
235 %t7 = sub i64 %t6, %t5
236 %t8 = lshr i64 %t7, 1
237 %t9 = mul nsw i64 %t8, %t4 ; signed
238 %a10 = add nsw i64 %t9, %a1 ; signed
242 define i64 @scalar_i64_signed_mem_mem(ptr %a1_addr, ptr %a2_addr) nounwind {
243 ; CHECK-LABEL: scalar_i64_signed_mem_mem:
245 ; CHECK-NEXT: ldr x9, [x0]
246 ; CHECK-NEXT: ldr x10, [x1]
247 ; CHECK-NEXT: mov x8, #-1 // =0xffffffffffffffff
248 ; CHECK-NEXT: cmp x9, x10
249 ; CHECK-NEXT: csel x11, x10, x9, gt
250 ; CHECK-NEXT: csel x10, x9, x10, gt
251 ; CHECK-NEXT: cneg x8, x8, le
252 ; CHECK-NEXT: sub x10, x10, x11
253 ; CHECK-NEXT: lsr x10, x10, #1
254 ; CHECK-NEXT: madd x0, x10, x8, x9
256 %a1 = load i64, ptr %a1_addr
257 %a2 = load i64, ptr %a2_addr
258 %t3 = icmp sgt i64 %a1, %a2 ; signed
259 %t4 = select i1 %t3, i64 -1, i64 1
260 %t5 = select i1 %t3, i64 %a2, i64 %a1
261 %t6 = select i1 %t3, i64 %a1, i64 %a2
262 %t7 = sub i64 %t6, %t5
263 %t8 = lshr i64 %t7, 1
264 %t9 = mul nsw i64 %t8, %t4 ; signed
265 %a10 = add nsw i64 %t9, %a1 ; signed
269 ; ---------------------------------------------------------------------------- ;
271 ; ---------------------------------------------------------------------------- ;
273 ; Values come from regs
275 define i16 @scalar_i16_signed_reg_reg(i16 %a1, i16 %a2) nounwind {
276 ; CHECK-LABEL: scalar_i16_signed_reg_reg:
278 ; CHECK-NEXT: sxth w9, w0
279 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
280 ; CHECK-NEXT: cmp w9, w1, sxth
281 ; CHECK-NEXT: csel w9, w1, w0, gt
282 ; CHECK-NEXT: csel w10, w0, w1, gt
283 ; CHECK-NEXT: cneg w8, w8, le
284 ; CHECK-NEXT: sub w9, w10, w9
285 ; CHECK-NEXT: ubfx w9, w9, #1, #15
286 ; CHECK-NEXT: madd w0, w9, w8, w0
288 %t3 = icmp sgt i16 %a1, %a2 ; signed
289 %t4 = select i1 %t3, i16 -1, i16 1
290 %t5 = select i1 %t3, i16 %a2, i16 %a1
291 %t6 = select i1 %t3, i16 %a1, i16 %a2
292 %t7 = sub i16 %t6, %t5
293 %t8 = lshr i16 %t7, 1
294 %t9 = mul nsw i16 %t8, %t4 ; signed
295 %a10 = add nsw i16 %t9, %a1 ; signed
299 define i16 @scalar_i16_unsigned_reg_reg(i16 %a1, i16 %a2) nounwind {
300 ; CHECK-LABEL: scalar_i16_unsigned_reg_reg:
302 ; CHECK-NEXT: and w9, w0, #0xffff
303 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
304 ; CHECK-NEXT: cmp w9, w1, uxth
305 ; CHECK-NEXT: csel w9, w1, w0, hi
306 ; CHECK-NEXT: csel w10, w0, w1, hi
307 ; CHECK-NEXT: cneg w8, w8, ls
308 ; CHECK-NEXT: sub w9, w10, w9
309 ; CHECK-NEXT: ubfx w9, w9, #1, #15
310 ; CHECK-NEXT: madd w0, w9, w8, w0
312 %t3 = icmp ugt i16 %a1, %a2
313 %t4 = select i1 %t3, i16 -1, i16 1
314 %t5 = select i1 %t3, i16 %a2, i16 %a1
315 %t6 = select i1 %t3, i16 %a1, i16 %a2
316 %t7 = sub i16 %t6, %t5
317 %t8 = lshr i16 %t7, 1
318 %t9 = mul i16 %t8, %t4
319 %a10 = add i16 %t9, %a1
323 ; Values are loaded. Only check signed case.
325 define i16 @scalar_i16_signed_mem_reg(ptr %a1_addr, i16 %a2) nounwind {
326 ; CHECK-LABEL: scalar_i16_signed_mem_reg:
328 ; CHECK-NEXT: ldrsh w9, [x0]
329 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
330 ; CHECK-NEXT: cmp w9, w1, sxth
331 ; CHECK-NEXT: csel w10, w1, w9, gt
332 ; CHECK-NEXT: csel w11, w9, w1, gt
333 ; CHECK-NEXT: cneg w8, w8, le
334 ; CHECK-NEXT: sub w10, w11, w10
335 ; CHECK-NEXT: ubfx w10, w10, #1, #15
336 ; CHECK-NEXT: madd w0, w10, w8, w9
338 %a1 = load i16, ptr %a1_addr
339 %t3 = icmp sgt i16 %a1, %a2 ; signed
340 %t4 = select i1 %t3, i16 -1, i16 1
341 %t5 = select i1 %t3, i16 %a2, i16 %a1
342 %t6 = select i1 %t3, i16 %a1, i16 %a2
343 %t7 = sub i16 %t6, %t5
344 %t8 = lshr i16 %t7, 1
345 %t9 = mul nsw i16 %t8, %t4 ; signed
346 %a10 = add nsw i16 %t9, %a1 ; signed
350 define i16 @scalar_i16_signed_reg_mem(i16 %a1, ptr %a2_addr) nounwind {
351 ; CHECK-LABEL: scalar_i16_signed_reg_mem:
353 ; CHECK-NEXT: sxth w9, w0
354 ; CHECK-NEXT: ldrsh w10, [x1]
355 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
356 ; CHECK-NEXT: cmp w9, w10
357 ; CHECK-NEXT: csel w9, w10, w0, gt
358 ; CHECK-NEXT: csel w10, w0, w10, gt
359 ; CHECK-NEXT: cneg w8, w8, le
360 ; CHECK-NEXT: sub w9, w10, w9
361 ; CHECK-NEXT: ubfx w9, w9, #1, #15
362 ; CHECK-NEXT: madd w0, w9, w8, w0
364 %a2 = load i16, ptr %a2_addr
365 %t3 = icmp sgt i16 %a1, %a2 ; signed
366 %t4 = select i1 %t3, i16 -1, i16 1
367 %t5 = select i1 %t3, i16 %a2, i16 %a1
368 %t6 = select i1 %t3, i16 %a1, i16 %a2
369 %t7 = sub i16 %t6, %t5
370 %t8 = lshr i16 %t7, 1
371 %t9 = mul nsw i16 %t8, %t4 ; signed
372 %a10 = add nsw i16 %t9, %a1 ; signed
376 define i16 @scalar_i16_signed_mem_mem(ptr %a1_addr, ptr %a2_addr) nounwind {
377 ; CHECK-LABEL: scalar_i16_signed_mem_mem:
379 ; CHECK-NEXT: ldrsh w9, [x0]
380 ; CHECK-NEXT: ldrsh w10, [x1]
381 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
382 ; CHECK-NEXT: cmp w9, w10
383 ; CHECK-NEXT: csel w11, w10, w9, gt
384 ; CHECK-NEXT: csel w10, w9, w10, gt
385 ; CHECK-NEXT: cneg w8, w8, le
386 ; CHECK-NEXT: sub w10, w10, w11
387 ; CHECK-NEXT: ubfx w10, w10, #1, #15
388 ; CHECK-NEXT: madd w0, w10, w8, w9
390 %a1 = load i16, ptr %a1_addr
391 %a2 = load i16, ptr %a2_addr
392 %t3 = icmp sgt i16 %a1, %a2 ; signed
393 %t4 = select i1 %t3, i16 -1, i16 1
394 %t5 = select i1 %t3, i16 %a2, i16 %a1
395 %t6 = select i1 %t3, i16 %a1, i16 %a2
396 %t7 = sub i16 %t6, %t5
397 %t8 = lshr i16 %t7, 1
398 %t9 = mul nsw i16 %t8, %t4 ; signed
399 %a10 = add nsw i16 %t9, %a1 ; signed
403 ; ---------------------------------------------------------------------------- ;
405 ; ---------------------------------------------------------------------------- ;
407 ; Values come from regs
409 define i8 @scalar_i8_signed_reg_reg(i8 %a1, i8 %a2) nounwind {
410 ; CHECK-LABEL: scalar_i8_signed_reg_reg:
412 ; CHECK-NEXT: sxtb w9, w0
413 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
414 ; CHECK-NEXT: cmp w9, w1, sxtb
415 ; CHECK-NEXT: csel w9, w1, w0, gt
416 ; CHECK-NEXT: csel w10, w0, w1, gt
417 ; CHECK-NEXT: cneg w8, w8, le
418 ; CHECK-NEXT: sub w9, w10, w9
419 ; CHECK-NEXT: ubfx w9, w9, #1, #7
420 ; CHECK-NEXT: madd w0, w9, w8, w0
422 %t3 = icmp sgt i8 %a1, %a2 ; signed
423 %t4 = select i1 %t3, i8 -1, i8 1
424 %t5 = select i1 %t3, i8 %a2, i8 %a1
425 %t6 = select i1 %t3, i8 %a1, i8 %a2
426 %t7 = sub i8 %t6, %t5
428 %t9 = mul nsw i8 %t8, %t4 ; signed
429 %a10 = add nsw i8 %t9, %a1 ; signed
433 define i8 @scalar_i8_unsigned_reg_reg(i8 %a1, i8 %a2) nounwind {
434 ; CHECK-LABEL: scalar_i8_unsigned_reg_reg:
436 ; CHECK-NEXT: and w9, w0, #0xff
437 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
438 ; CHECK-NEXT: cmp w9, w1, uxtb
439 ; CHECK-NEXT: csel w9, w1, w0, hi
440 ; CHECK-NEXT: csel w10, w0, w1, hi
441 ; CHECK-NEXT: cneg w8, w8, ls
442 ; CHECK-NEXT: sub w9, w10, w9
443 ; CHECK-NEXT: ubfx w9, w9, #1, #7
444 ; CHECK-NEXT: madd w0, w9, w8, w0
446 %t3 = icmp ugt i8 %a1, %a2
447 %t4 = select i1 %t3, i8 -1, i8 1
448 %t5 = select i1 %t3, i8 %a2, i8 %a1
449 %t6 = select i1 %t3, i8 %a1, i8 %a2
450 %t7 = sub i8 %t6, %t5
452 %t9 = mul i8 %t8, %t4
453 %a10 = add i8 %t9, %a1
457 ; Values are loaded. Only check signed case.
459 define i8 @scalar_i8_signed_mem_reg(ptr %a1_addr, i8 %a2) nounwind {
460 ; CHECK-LABEL: scalar_i8_signed_mem_reg:
462 ; CHECK-NEXT: ldrsb w9, [x0]
463 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
464 ; CHECK-NEXT: cmp w9, w1, sxtb
465 ; CHECK-NEXT: csel w10, w1, w9, gt
466 ; CHECK-NEXT: csel w11, w9, w1, gt
467 ; CHECK-NEXT: cneg w8, w8, le
468 ; CHECK-NEXT: sub w10, w11, w10
469 ; CHECK-NEXT: ubfx w10, w10, #1, #7
470 ; CHECK-NEXT: madd w0, w10, w8, w9
472 %a1 = load i8, ptr %a1_addr
473 %t3 = icmp sgt i8 %a1, %a2 ; signed
474 %t4 = select i1 %t3, i8 -1, i8 1
475 %t5 = select i1 %t3, i8 %a2, i8 %a1
476 %t6 = select i1 %t3, i8 %a1, i8 %a2
477 %t7 = sub i8 %t6, %t5
479 %t9 = mul nsw i8 %t8, %t4 ; signed
480 %a10 = add nsw i8 %t9, %a1 ; signed
484 define i8 @scalar_i8_signed_reg_mem(i8 %a1, ptr %a2_addr) nounwind {
485 ; CHECK-LABEL: scalar_i8_signed_reg_mem:
487 ; CHECK-NEXT: sxtb w9, w0
488 ; CHECK-NEXT: ldrsb w10, [x1]
489 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
490 ; CHECK-NEXT: cmp w9, w10
491 ; CHECK-NEXT: csel w9, w10, w0, gt
492 ; CHECK-NEXT: csel w10, w0, w10, gt
493 ; CHECK-NEXT: cneg w8, w8, le
494 ; CHECK-NEXT: sub w9, w10, w9
495 ; CHECK-NEXT: ubfx w9, w9, #1, #7
496 ; CHECK-NEXT: madd w0, w9, w8, w0
498 %a2 = load i8, ptr %a2_addr
499 %t3 = icmp sgt i8 %a1, %a2 ; signed
500 %t4 = select i1 %t3, i8 -1, i8 1
501 %t5 = select i1 %t3, i8 %a2, i8 %a1
502 %t6 = select i1 %t3, i8 %a1, i8 %a2
503 %t7 = sub i8 %t6, %t5
505 %t9 = mul nsw i8 %t8, %t4 ; signed
506 %a10 = add nsw i8 %t9, %a1 ; signed
510 define i8 @scalar_i8_signed_mem_mem(ptr %a1_addr, ptr %a2_addr) nounwind {
511 ; CHECK-LABEL: scalar_i8_signed_mem_mem:
513 ; CHECK-NEXT: ldrsb w9, [x0]
514 ; CHECK-NEXT: ldrsb w10, [x1]
515 ; CHECK-NEXT: mov w8, #-1 // =0xffffffff
516 ; CHECK-NEXT: cmp w9, w10
517 ; CHECK-NEXT: csel w11, w10, w9, gt
518 ; CHECK-NEXT: csel w10, w9, w10, gt
519 ; CHECK-NEXT: cneg w8, w8, le
520 ; CHECK-NEXT: sub w10, w10, w11
521 ; CHECK-NEXT: ubfx w10, w10, #1, #7
522 ; CHECK-NEXT: madd w0, w10, w8, w9
524 %a1 = load i8, ptr %a1_addr
525 %a2 = load i8, ptr %a2_addr
526 %t3 = icmp sgt i8 %a1, %a2 ; signed
527 %t4 = select i1 %t3, i8 -1, i8 1
528 %t5 = select i1 %t3, i8 %a2, i8 %a1
529 %t6 = select i1 %t3, i8 %a1, i8 %a2
530 %t7 = sub i8 %t6, %t5
532 %t9 = mul nsw i8 %t8, %t4 ; signed
533 %a10 = add nsw i8 %t9, %a1 ; signed