1 ; This test makes sure that these instructions are properly eliminated.
2 ; RUN: opt < %s -instcombine -S | FileCheck %s
4 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
6 define i32 @test1(i32 %A) {
13 define i32 @test2(i32 %A) {
16 ; CHECK-LABEL: @test2(
20 define i8 @test2a(i8 %A) {
23 ; CHECK-LABEL: @test2a(
27 define i1 @test3(i1 %A) {
30 ; CHECK-LABEL: @test3(
34 define i1 @test4(i1 %A) {
37 ; CHECK-LABEL: @test4(
41 define i1 @test5(i1 %A) {
44 ; CHECK-LABEL: @test5(
48 define i32 @test6(i32 %A) {
51 ; CHECK-LABEL: @test6(
56 define i32 @test7(i32 %A) {
57 %NotA = xor i32 -1, %A
60 ; CHECK-LABEL: @test7(
64 define i8 @test8(i8 %A) {
68 ; CHECK-LABEL: @test8(
72 ; Test that (A|c1)|(B|c2) == (A|B)|(c1|c2)
73 define i8 @test9(i8 %A, i8 %B) {
78 ; CHECK-LABEL: @test9(
82 define i8 @test10(i8 %A) {
85 ; (X & C1) | C2 --> (X | C2) & (C1|C2)
88 ; CHECK-LABEL: @test10(
92 define i8 @test11(i8 %A) {
95 ; (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)
99 ; CHECK-LABEL: @test11(
103 define i32 @test12(i32 %A) {
104 ; Should be eliminated
108 ; CHECK-LABEL: @test12(
109 ; CHECK: %C = and i32 %A, 8
113 define i32 @test13(i32 %A) {
118 ; CHECK-LABEL: @test13(
122 define i1 @test14(i32 %A, i32 %B) {
123 %C1 = icmp ult i32 %A, %B
124 %C2 = icmp ugt i32 %A, %B
125 ; (A < B) | (A > B) === A != B
128 ; CHECK-LABEL: @test14(
129 ; CHECK: icmp ne i32 %A, %B
133 define i1 @test15(i32 %A, i32 %B) {
134 %C1 = icmp ult i32 %A, %B
135 %C2 = icmp eq i32 %A, %B
136 ; (A < B) | (A == B) === A <= B
139 ; CHECK-LABEL: @test15(
140 ; CHECK: icmp ule i32 %A, %B
144 define i32 @test16(i32 %A) {
148 ; %D = and int %B, -1 == %B
151 ; CHECK-LABEL: @test16(
155 define i32 @test17(i32 %A) {
161 ; CHECK-LABEL: @test17(
162 ; CHECK: %D = and i32 %A, 5
166 define i1 @test18(i32 %A) {
167 %B = icmp sge i32 %A, 100
168 %C = icmp slt i32 %A, 50
172 ; CHECK-LABEL: @test18(
178 define i1 @test19(i32 %A) {
179 %B = icmp eq i32 %A, 50
180 %C = icmp eq i32 %A, 51
184 ; CHECK-LABEL: @test19(
190 define i32 @test20(i32 %x) {
194 ; CHECK-LABEL: @test20(
198 define i32 @test21(i32 %tmp.1) {
199 %tmp.1.mask1 = add i32 %tmp.1, 2
200 %tmp.3 = and i32 %tmp.1.mask1, -2
201 %tmp.5 = and i32 %tmp.1, 1
203 %tmp.6 = or i32 %tmp.5, %tmp.3
205 ; CHECK-LABEL: @test21(
206 ; CHECK: add i32 %{{[^,]*}}, 2
210 define i32 @test22(i32 %B) {
211 %ELIM41 = and i32 %B, 1
212 %ELIM7 = and i32 %B, -2
213 %ELIM5 = or i32 %ELIM41, %ELIM7
215 ; CHECK-LABEL: @test22(
219 define i16 @test23(i16 %A) {
222 %C = or i16 %B, -32768
223 %D = xor i16 %C, 8193
225 ; CHECK-LABEL: @test23(
226 ; CHECK: %B = lshr i16 %A, 1
227 ; CHECK: %D = xor i16 %B, -24575
232 define i1 @test24(double %X, double %Y) {
233 %tmp9 = fcmp uno double %X, 0.000000e+00 ; <i1> [#uses=1]
234 %tmp13 = fcmp uno double %Y, 0.000000e+00 ; <i1> [#uses=1]
235 %bothcond = or i1 %tmp13, %tmp9 ; <i1> [#uses=1]
238 ; CHECK-LABEL: @test24(
239 ; CHECK: = fcmp uno double %Y, %X
244 define i1 @test25(i32 %A, i32 %B) {
245 %C = icmp eq i32 %A, 0
246 %D = icmp eq i32 %B, 57
251 ; CHECK-LABEL: @test25(
252 ; CHECK: icmp ne i32 %A, 0
253 ; CHECK-NEXT: icmp ne i32 %B, 57
254 ; CHECK-NEXT: %F = and i1
255 ; CHECK-NEXT: ret i1 %F
259 define i1 @test26(i32 %A, i32 %B) {
260 %C1 = icmp eq i32 %A, 0
261 %C2 = icmp eq i32 %B, 0
262 ; (A == 0) & (A == 0) --> (A|B) == 0
265 ; CHECK-LABEL: @test26(
266 ; CHECK: or i32 %A, %B
267 ; CHECK: icmp eq i32 {{.*}}, 0
271 define i1 @test27(i32* %A, i32* %B) {
272 %C1 = ptrtoint i32* %A to i32
273 %C2 = ptrtoint i32* %B to i32
275 %E = icmp eq i32 %D, 0
277 ; CHECK-LABEL: @test27(
278 ; CHECK: icmp eq i32* %A, null
279 ; CHECK: icmp eq i32* %B, null
285 define i1 @test28(i32 %A, i32 %B) {
286 %C1 = icmp ne i32 %A, 0
287 %C2 = icmp ne i32 %B, 0
288 ; (A != 0) | (A != 0) --> (A|B) != 0
291 ; CHECK-LABEL: @test28(
292 ; CHECK: or i32 %A, %B
293 ; CHECK: icmp ne i32 {{.*}}, 0
297 define i1 @test29(i32* %A, i32* %B) {
298 %C1 = ptrtoint i32* %A to i32
299 %C2 = ptrtoint i32* %B to i32
301 %E = icmp ne i32 %D, 0
303 ; CHECK-LABEL: @test29(
304 ; CHECK: icmp ne i32* %A, null
305 ; CHECK: icmp ne i32* %B, null
311 define i32 @test30(i32 %A) {
313 %B = or i32 %A, 32962
314 %C = and i32 %A, -65536
315 %D = and i32 %B, 40186
318 ; CHECK-LABEL: @test30(
319 ; CHECK: %D = and i32 %A, -58312
320 ; CHECK: %E = or i32 %D, 32962
325 define i64 @test31(i64 %A) nounwind readnone ssp noredzone {
329 %C = or i64 %A, 32768
330 %E = and i64 %C, 4294941696
334 ; CHECK-LABEL: @test31(
335 ; CHECK-NEXT: %E = and i64 %A, 4294908984
336 ; CHECK-NEXT: %F = or i64 %E, 32962
337 ; CHECK-NEXT: ret i64 %F
340 define <4 x i32> @test32(<4 x i1> %and.i1352, <4 x i32> %vecinit6.i176, <4 x i32> %vecinit6.i191) {
341 %and.i135 = sext <4 x i1> %and.i1352 to <4 x i32> ; <<4 x i32>> [#uses=2]
342 %and.i129 = and <4 x i32> %vecinit6.i176, %and.i135 ; <<4 x i32>> [#uses=1]
343 %neg.i = xor <4 x i32> %and.i135, <i32 -1, i32 -1, i32 -1, i32 -1> ; <<4 x i32>> [#uses=1]
344 %and.i = and <4 x i32> %vecinit6.i191, %neg.i ; <<4 x i32>> [#uses=1]
345 %or.i = or <4 x i32> %and.i, %and.i129 ; <<4 x i32>> [#uses=1]
347 ; codegen is mature enough to handle vector selects.
348 ; CHECK-LABEL: @test32(
349 ; CHECK: select <4 x i1> %and.i1352, <4 x i32> %vecinit6.i176, <4 x i32> %vecinit6.i191
352 define i1 @test33(i1 %X, i1 %Y) {
356 ; CHECK-LABEL: @test33(
357 ; CHECK-NEXT: or i1 %X, %Y
361 define i32 @test34(i32 %X, i32 %Y) {
365 ; CHECK-LABEL: @test34(
366 ; CHECK-NEXT: or i32 %X, %Y
370 define i32 @test35(i32 %a, i32 %b) {
374 ; CHECK-LABEL: @test35(
375 ; CHECK-NEXT: or i32 %a, %b
376 ; CHECK-NEXT: or i32 %1, 1135
379 define i1 @test36(i32 %x) {
380 %cmp1 = icmp eq i32 %x, 23
381 %cmp2 = icmp eq i32 %x, 24
382 %ret1 = or i1 %cmp1, %cmp2
383 %cmp3 = icmp eq i32 %x, 25
384 %ret2 = or i1 %ret1, %cmp3
386 ; CHECK-LABEL: @test36(
387 ; CHECK-NEXT: %x.off = add i32 %x, -23
388 ; CHECK-NEXT: icmp ult i32 %x.off, 3
392 define i32 @test37(i32* %xp, i32 %y) {
393 ; CHECK-LABEL: @test37(
394 ; CHECK: select i1 %tobool, i32 -1, i32 %x
395 %tobool = icmp ne i32 %y, 0
396 %sext = sext i1 %tobool to i32
398 %or = or i32 %sext, %x
402 define i32 @test38(i32* %xp, i32 %y) {
403 ; CHECK-LABEL: @test38(
404 ; CHECK: select i1 %tobool, i32 -1, i32 %x
405 %tobool = icmp ne i32 %y, 0
406 %sext = sext i1 %tobool to i32
408 %or = or i32 %x, %sext
412 define i32 @test39(i32 %a, i32 %b) {
413 ; CHECK-LABEL: test39(
414 ; CHECK-NEXT: %or = or i32 %a, %b
415 %xor = xor i32 %a, -1
416 %and = and i32 %xor, %b
417 %or = or i32 %and, %a
421 define i32 @test40(i32 %a, i32 %b) {
422 ; CHECK-LABEL: test40(
423 ; CHECK-NEXT: %1 = xor i32 %a, -1
424 ; CHECK-NEXT: %or = or i32 %1, %b
425 %and = and i32 %a, %b
426 %xor = xor i32 %a, -1
427 %or = or i32 %and, %xor
431 define i32 @test41(i32 %a, i32 %b) {
432 ; CHECK-LABEL: test41(
433 ; CHECK-NEXT: %1 = xor i32 %a, -1
434 ; CHECK-NEXT: %or = xor i32 %1, %b
435 %and = and i32 %a, %b
436 %nega = xor i32 %a, -1
437 %xor = xor i32 %nega, %b
438 %or = or i32 %and, %xor
442 define i32 @test42(i32 %a, i32 %b) {
443 ; CHECK-LABEL: test42(
444 ; CHECK-NEXT: %1 = xor i32 %a, -1
445 ; CHECK-NEXT: %or = xor i32 %1, %b
446 %nega = xor i32 %a, -1
447 %xor = xor i32 %nega, %b
448 %and = and i32 %a, %b
449 %or = or i32 %xor, %and
453 define i32 @test43(i32 %a, i32 %b) {
454 ; CHECK-LABEL: test43(
455 ; CHECK-NEXT: %or = xor i32 %a, %b
456 %neg = xor i32 %b, -1
457 %and = and i32 %a, %neg
458 %xor = xor i32 %a, %b
459 %or = or i32 %and, %xor
463 define i32 @test44(i32 %a, i32 %b) {
464 ; CHECK-LABEL: test44(
465 ; CHECK-NEXT: %or = xor i32 %a, %b
466 %xor = xor i32 %a, %b
467 %neg = xor i32 %b, -1
468 %and = and i32 %a, %neg
469 %or = or i32 %xor, %and
473 define i32 @test45(i32 %x, i32 %y, i32 %z) {
474 ; CHECK-LABEL: test45(
475 ; CHECK-NEXT: %1 = and i32 %x, %z
476 ; CHECK-NEXT: %or1 = or i32 %1, %y
477 ; CHECK-NEXT: ret i32 %or1
479 %and = and i32 %x, %or
480 %or1 = or i32 %and, %y
484 define i1 @test46(i8 signext %c) {
485 %c.off = add i8 %c, -97
486 %cmp1 = icmp ult i8 %c.off, 26
487 %c.off17 = add i8 %c, -65
488 %cmp2 = icmp ult i8 %c.off17, 26
489 %or = or i1 %cmp1, %cmp2
491 ; CHECK-LABEL: @test46(
492 ; CHECK-NEXT: and i8 %c, -33
493 ; CHECK-NEXT: add i8 %1, -65
494 ; CHECK-NEXT: icmp ult i8 %2, 26
497 define i1 @test47(i8 signext %c) {
498 %c.off = add i8 %c, -65
499 %cmp1 = icmp ule i8 %c.off, 26
500 %c.off17 = add i8 %c, -97
501 %cmp2 = icmp ule i8 %c.off17, 26
502 %or = or i1 %cmp1, %cmp2
504 ; CHECK-LABEL: @test47(
505 ; CHECK-NEXT: and i8 %c, -33
506 ; CHECK-NEXT: add i8 %1, -65
507 ; CHECK-NEXT: icmp ult i8 %2, 27