1 ; RUN: opt -basicaa -objc-arc -S < %s | FileCheck %s
3 target datalayout = "e-p:64:64:64"
5 declare i8* @objc_retain(i8*)
6 declare i8* @objc_retainAutoreleasedReturnValue(i8*)
7 declare void @objc_release(i8*)
8 declare i8* @objc_autorelease(i8*)
9 declare i8* @objc_autoreleaseReturnValue(i8*)
10 declare void @objc_autoreleasePoolPop(i8*)
11 declare i8* @objc_autoreleasePoolPush()
12 declare i8* @objc_retainBlock(i8*)
14 declare i8* @objc_retainedObject(i8*)
15 declare i8* @objc_unretainedObject(i8*)
16 declare i8* @objc_unretainedPointer(i8*)
18 declare void @use_pointer(i8*)
19 declare void @callee()
20 declare void @callee_fnptr(void ()*)
21 declare void @invokee()
22 declare i8* @returner()
23 declare void @bar(i32 ()*)
25 declare void @llvm.dbg.value(metadata, i64, metadata)
27 declare i8* @objc_msgSend(i8*, i8*, ...)
29 ; Simple retain+release pair deletion, with some intervening control
30 ; flow and harmless instructions.
32 ; CHECK: define void @test0_precise(
34 ; CHECK: @objc_release
36 define void @test0_precise(i32* %x, i1 %p) nounwind {
38 %a = bitcast i32* %x to i8*
39 %0 = call i8* @objc_retain(i8* %a) nounwind
40 br i1 %p, label %t, label %f
44 %b = bitcast i32* %x to float*
45 store float 2.0, float* %b
53 %c = bitcast i32* %x to i8*
54 call void @objc_release(i8* %c) nounwind
58 ; CHECK: define void @test0_imprecise(
61 define void @test0_imprecise(i32* %x, i1 %p) nounwind {
63 %a = bitcast i32* %x to i8*
64 %0 = call i8* @objc_retain(i8* %a) nounwind
65 br i1 %p, label %t, label %f
69 %b = bitcast i32* %x to float*
70 store float 2.0, float* %b
78 %c = bitcast i32* %x to i8*
79 call void @objc_release(i8* %c) nounwind, !clang.imprecise_release !0
83 ; Like test0 but the release isn't always executed when the retain is,
84 ; so the optimization is not safe.
86 ; TODO: Make the objc_release's argument be %0.
88 ; CHECK: define void @test1_precise(
89 ; CHECK: @objc_retain(i8* %a)
90 ; CHECK: @objc_release
92 define void @test1_precise(i32* %x, i1 %p, i1 %q) nounwind {
94 %a = bitcast i32* %x to i8*
95 %0 = call i8* @objc_retain(i8* %a) nounwind
96 br i1 %p, label %t, label %f
100 %b = bitcast i32* %x to float*
101 store float 2.0, float* %b
107 br i1 %q, label %return, label %alt_return
110 %c = bitcast i32* %x to i8*
111 call void @objc_release(i8* %c) nounwind
118 ; CHECK: define void @test1_imprecise(
119 ; CHECK: @objc_retain(i8* %a)
120 ; CHECK: @objc_release
122 define void @test1_imprecise(i32* %x, i1 %p, i1 %q) nounwind {
124 %a = bitcast i32* %x to i8*
125 %0 = call i8* @objc_retain(i8* %a) nounwind
126 br i1 %p, label %t, label %f
130 %b = bitcast i32* %x to float*
131 store float 2.0, float* %b
137 br i1 %q, label %return, label %alt_return
140 %c = bitcast i32* %x to i8*
141 call void @objc_release(i8* %c) nounwind, !clang.imprecise_release !0
149 ; Don't do partial elimination into two different CFG diamonds.
151 ; CHECK: define void @test1b_precise(
153 ; CHECK: tail call i8* @objc_retain(i8* %x) [[NUW:#[0-9]+]]
156 ; CHECK: tail call void @objc_release(i8* %x) [[NUW]]
159 define void @test1b_precise(i8* %x, i1 %p, i1 %q) {
161 tail call i8* @objc_retain(i8* %x) nounwind
162 br i1 %p, label %if.then, label %if.end
164 if.then: ; preds = %entry
165 tail call void @callee()
168 if.end: ; preds = %if.then, %entry
169 br i1 %q, label %if.then3, label %if.end5
171 if.then3: ; preds = %if.end
172 tail call void @use_pointer(i8* %x)
175 if.end5: ; preds = %if.then3, %if.end
176 tail call void @objc_release(i8* %x) nounwind
180 ; CHECK: define void @test1b_imprecise(
182 ; CHECK: tail call i8* @objc_retain(i8* %x) [[NUW:#[0-9]+]]
185 ; CHECK: tail call void @objc_release(i8* %x) [[NUW]], !clang.imprecise_release !0
188 define void @test1b_imprecise(i8* %x, i1 %p, i1 %q) {
190 tail call i8* @objc_retain(i8* %x) nounwind
191 br i1 %p, label %if.then, label %if.end
193 if.then: ; preds = %entry
194 tail call void @callee()
197 if.end: ; preds = %if.then, %entry
198 br i1 %q, label %if.then3, label %if.end5
200 if.then3: ; preds = %if.end
201 tail call void @use_pointer(i8* %x)
204 if.end5: ; preds = %if.then3, %if.end
205 tail call void @objc_release(i8* %x) nounwind, !clang.imprecise_release !0
210 ; Like test0 but the pointer is passed to an intervening call,
211 ; so the optimization is not safe.
213 ; CHECK: define void @test2_precise(
214 ; CHECK: @objc_retain(i8* %a)
215 ; CHECK: @objc_release
217 define void @test2_precise(i32* %x, i1 %p) nounwind {
219 %a = bitcast i32* %x to i8*
220 %0 = call i8* @objc_retain(i8* %a) nounwind
221 br i1 %p, label %t, label %f
225 %b = bitcast i32* %x to float*
226 store float 2.0, float* %b
231 call void @use_pointer(i8* %0)
232 %d = bitcast i32* %x to float*
233 store float 3.0, float* %d
237 %c = bitcast i32* %x to i8*
238 call void @objc_release(i8* %c) nounwind
242 ; CHECK: define void @test2_imprecise(
243 ; CHECK: @objc_retain(i8* %a)
244 ; CHECK: @objc_release
246 define void @test2_imprecise(i32* %x, i1 %p) nounwind {
248 %a = bitcast i32* %x to i8*
249 %0 = call i8* @objc_retain(i8* %a) nounwind
250 br i1 %p, label %t, label %f
254 %b = bitcast i32* %x to float*
255 store float 2.0, float* %b
260 call void @use_pointer(i8* %0)
261 %d = bitcast i32* %x to float*
262 store float 3.0, float* %d
266 %c = bitcast i32* %x to i8*
267 call void @objc_release(i8* %c) nounwind, !clang.imprecise_release !0
271 ; Like test0 but the release is in a loop,
272 ; so the optimization is not safe.
274 ; TODO: For now, assume this can't happen.
276 ; CHECK: define void @test3_precise(
277 ; TODO: @objc_retain(i8* %a)
278 ; TODO: @objc_release
280 define void @test3_precise(i32* %x, i1* %q) nounwind {
282 %a = bitcast i32* %x to i8*
283 %0 = call i8* @objc_retain(i8* %a) nounwind
287 %c = bitcast i32* %x to i8*
288 call void @objc_release(i8* %c) nounwind
289 %j = load volatile i1* %q
290 br i1 %j, label %loop, label %return
296 ; CHECK: define void @test3_imprecise(
297 ; TODO: @objc_retain(i8* %a)
298 ; TODO: @objc_release
300 define void @test3_imprecise(i32* %x, i1* %q) nounwind {
302 %a = bitcast i32* %x to i8*
303 %0 = call i8* @objc_retain(i8* %a) nounwind
307 %c = bitcast i32* %x to i8*
308 call void @objc_release(i8* %c) nounwind, !clang.imprecise_release !0
309 %j = load volatile i1* %q
310 br i1 %j, label %loop, label %return
317 ; TODO: For now, assume this can't happen.
319 ; Like test0 but the retain is in a loop,
320 ; so the optimization is not safe.
322 ; CHECK: define void @test4_precise(
323 ; TODO: @objc_retain(i8* %a)
324 ; TODO: @objc_release
326 define void @test4_precise(i32* %x, i1* %q) nounwind {
331 %a = bitcast i32* %x to i8*
332 %0 = call i8* @objc_retain(i8* %a) nounwind
333 %j = load volatile i1* %q
334 br i1 %j, label %loop, label %return
337 %c = bitcast i32* %x to i8*
338 call void @objc_release(i8* %c) nounwind
342 ; CHECK: define void @test4_imprecise(
343 ; TODO: @objc_retain(i8* %a)
344 ; TODO: @objc_release
346 define void @test4_imprecise(i32* %x, i1* %q) nounwind {
351 %a = bitcast i32* %x to i8*
352 %0 = call i8* @objc_retain(i8* %a) nounwind
353 %j = load volatile i1* %q
354 br i1 %j, label %loop, label %return
357 %c = bitcast i32* %x to i8*
358 call void @objc_release(i8* %c) nounwind, !clang.imprecise_release !0
363 ; Like test0 but the pointer is conditionally passed to an intervening call,
364 ; so the optimization is not safe.
366 ; CHECK: define void @test5a(
367 ; CHECK: @objc_retain(i8*
368 ; CHECK: @objc_release
370 define void @test5a(i32* %x, i1 %q, i8* %y) nounwind {
372 %a = bitcast i32* %x to i8*
373 %0 = call i8* @objc_retain(i8* %a) nounwind
374 %s = select i1 %q, i8* %y, i8* %0
375 call void @use_pointer(i8* %s)
377 %c = bitcast i32* %x to i8*
378 call void @objc_release(i8* %c) nounwind
382 ; CHECK: define void @test5b(
383 ; CHECK: @objc_retain(i8*
384 ; CHECK: @objc_release
386 define void @test5b(i32* %x, i1 %q, i8* %y) nounwind {
388 %a = bitcast i32* %x to i8*
389 %0 = call i8* @objc_retain(i8* %a) nounwind
390 %s = select i1 %q, i8* %y, i8* %0
391 call void @use_pointer(i8* %s)
393 %c = bitcast i32* %x to i8*
394 call void @objc_release(i8* %c) nounwind, !clang.imprecise_release !0
399 ; retain+release pair deletion, where the release happens on two different
402 ; CHECK: define void @test6a(
404 ; CHECK: tail call i8* @objc_retain(
406 ; CHECK: call void @objc_release(
408 ; CHECK: call void @objc_release(
411 define void @test6a(i32* %x, i1 %p) nounwind {
413 %a = bitcast i32* %x to i8*
414 %0 = call i8* @objc_retain(i8* %a) nounwind
415 br i1 %p, label %t, label %f
419 %b = bitcast i32* %x to float*
420 store float 2.0, float* %b
421 %ct = bitcast i32* %x to i8*
422 call void @objc_release(i8* %ct) nounwind
428 %cf = bitcast i32* %x to i8*
429 call void @objc_release(i8* %cf) nounwind
436 ; CHECK: define void @test6b(
439 define void @test6b(i32* %x, i1 %p) nounwind {
441 %a = bitcast i32* %x to i8*
442 %0 = call i8* @objc_retain(i8* %a) nounwind
443 br i1 %p, label %t, label %f
447 %b = bitcast i32* %x to float*
448 store float 2.0, float* %b
449 %ct = bitcast i32* %x to i8*
450 call void @objc_release(i8* %ct) nounwind, !clang.imprecise_release !0
456 %cf = bitcast i32* %x to i8*
457 call void @objc_release(i8* %cf) nounwind, !clang.imprecise_release !0
464 ; CHECK: define void @test6c(
466 ; CHECK: tail call i8* @objc_retain(
468 ; CHECK: call void @objc_release(
470 ; CHECK: call void @objc_release(
473 define void @test6c(i32* %x, i1 %p) nounwind {
475 %a = bitcast i32* %x to i8*
476 %0 = call i8* @objc_retain(i8* %a) nounwind
477 br i1 %p, label %t, label %f
481 %b = bitcast i32* %x to float*
482 store float 2.0, float* %b
483 %ct = bitcast i32* %x to i8*
484 call void @objc_release(i8* %ct) nounwind
490 %cf = bitcast i32* %x to i8*
491 call void @objc_release(i8* %cf) nounwind, !clang.imprecise_release !0
498 ; CHECK: define void @test6d(
500 ; CHECK: tail call i8* @objc_retain(
502 ; CHECK: call void @objc_release(
504 ; CHECK: call void @objc_release(
507 define void @test6d(i32* %x, i1 %p) nounwind {
509 %a = bitcast i32* %x to i8*
510 %0 = call i8* @objc_retain(i8* %a) nounwind
511 br i1 %p, label %t, label %f
515 %b = bitcast i32* %x to float*
516 store float 2.0, float* %b
517 %ct = bitcast i32* %x to i8*
518 call void @objc_release(i8* %ct) nounwind, !clang.imprecise_release !0
524 %cf = bitcast i32* %x to i8*
525 call void @objc_release(i8* %cf) nounwind
533 ; retain+release pair deletion, where the retain happens on two different
536 ; CHECK: define void @test7(
540 ; CHECK: call i8* @objc_retain
542 ; CHECK: call i8* @objc_retain
544 ; CHECK: call void @objc_release
546 define void @test7(i32* %x, i1 %p) nounwind {
548 %a = bitcast i32* %x to i8*
549 br i1 %p, label %t, label %f
552 %0 = call i8* @objc_retain(i8* %a) nounwind
554 %b = bitcast i32* %x to float*
555 store float 2.0, float* %b
559 %1 = call i8* @objc_retain(i8* %a) nounwind
565 %c = bitcast i32* %x to i8*
566 call void @objc_release(i8* %c) nounwind
570 ; CHECK: define void @test7b(
573 define void @test7b(i32* %x, i1 %p) nounwind {
575 %a = bitcast i32* %x to i8*
576 br i1 %p, label %t, label %f
579 %0 = call i8* @objc_retain(i8* %a) nounwind
581 %b = bitcast i32* %x to float*
582 store float 2.0, float* %b
586 %1 = call i8* @objc_retain(i8* %a) nounwind
592 %c = bitcast i32* %x to i8*
593 call void @objc_release(i8* %c) nounwind, !clang.imprecise_release !0
597 ; Like test7, but there's a retain/retainBlock mismatch. Don't delete!
599 ; CHECK: define void @test7c
601 ; CHECK: call i8* @objc_retainBlock
603 ; CHECK: call i8* @objc_retain
605 ; CHECK: call void @objc_release
607 define void @test7c(i32* %x, i1 %p) nounwind {
609 %a = bitcast i32* %x to i8*
610 br i1 %p, label %t, label %f
613 %0 = call i8* @objc_retainBlock(i8* %a) nounwind
615 %b = bitcast i32* %x to float*
616 store float 2.0, float* %b
620 %1 = call i8* @objc_retain(i8* %a) nounwind
626 %c = bitcast i32* %x to i8*
627 call void @objc_release(i8* %c) nounwind
631 ; retain+release pair deletion, where the retain and release both happen on
632 ; different flow paths. Wild!
634 ; CHECK: define void @test8a(
637 ; CHECK: @objc_retain
639 ; CHECK: @objc_retain
642 ; CHECK: @objc_release
644 ; CHECK: @objc_release
647 define void @test8a(i32* %x, i1 %p, i1 %q) nounwind {
649 %a = bitcast i32* %x to i8*
650 br i1 %p, label %t, label %f
653 %0 = call i8* @objc_retain(i8* %a) nounwind
655 %b = bitcast i32* %x to float*
656 store float 2.0, float* %b
660 %1 = call i8* @objc_retain(i8* %a) nounwind
665 br i1 %q, label %u, label %g
669 %cu = bitcast i32* %x to i8*
670 call void @objc_release(i8* %cu) nounwind
674 %cg = bitcast i32* %x to i8*
675 call void @objc_release(i8* %cg) nounwind
682 ; CHECK: define void @test8b(
685 define void @test8b(i32* %x, i1 %p, i1 %q) nounwind {
687 %a = bitcast i32* %x to i8*
688 br i1 %p, label %t, label %f
691 %0 = call i8* @objc_retain(i8* %a) nounwind
693 %b = bitcast i32* %x to float*
694 store float 2.0, float* %b
698 %1 = call i8* @objc_retain(i8* %a) nounwind
703 br i1 %q, label %u, label %g
707 %cu = bitcast i32* %x to i8*
708 call void @objc_release(i8* %cu) nounwind, !clang.imprecise_release !0
712 %cg = bitcast i32* %x to i8*
713 call void @objc_release(i8* %cg) nounwind, !clang.imprecise_release !0
720 ; CHECK: define void @test8c(
723 ; CHECK: @objc_retain
725 ; CHECK: @objc_retain
728 ; CHECK: @objc_release
730 ; CHECK: @objc_release
733 define void @test8c(i32* %x, i1 %p, i1 %q) nounwind {
735 %a = bitcast i32* %x to i8*
736 br i1 %p, label %t, label %f
739 %0 = call i8* @objc_retain(i8* %a) nounwind
741 %b = bitcast i32* %x to float*
742 store float 2.0, float* %b
746 %1 = call i8* @objc_retain(i8* %a) nounwind
751 br i1 %q, label %u, label %g
755 %cu = bitcast i32* %x to i8*
756 call void @objc_release(i8* %cu) nounwind
760 %cg = bitcast i32* %x to i8*
761 call void @objc_release(i8* %cg) nounwind, !clang.imprecise_release !0
768 ; CHECK: define void @test8d(
771 ; CHECK: @objc_retain
773 ; CHECK: @objc_retain
776 ; CHECK: @objc_release
778 ; CHECK: @objc_release
781 define void @test8d(i32* %x, i1 %p, i1 %q) nounwind {
783 %a = bitcast i32* %x to i8*
784 br i1 %p, label %t, label %f
787 %0 = call i8* @objc_retain(i8* %a) nounwind
789 %b = bitcast i32* %x to float*
790 store float 2.0, float* %b
794 %1 = call i8* @objc_retain(i8* %a) nounwind
799 br i1 %q, label %u, label %g
803 %cu = bitcast i32* %x to i8*
804 call void @objc_release(i8* %cu) nounwind, !clang.imprecise_release !0
808 %cg = bitcast i32* %x to i8*
809 call void @objc_release(i8* %cg) nounwind
816 ; Trivial retain+release pair deletion.
818 ; CHECK: define void @test9(
821 define void @test9(i8* %x) nounwind {
823 %0 = call i8* @objc_retain(i8* %x) nounwind
824 call void @objc_release(i8* %0) nounwind
828 ; Retain+release pair, but on an unknown pointer relationship. Don't delete!
830 ; CHECK: define void @test9b
831 ; CHECK: @objc_retain(i8* %x)
832 ; CHECK: @objc_release(i8* %s)
834 define void @test9b(i8* %x, i1 %j, i8* %p) nounwind {
836 %0 = call i8* @objc_retain(i8* %x) nounwind
837 %s = select i1 %j, i8* %x, i8* %p
838 call void @objc_release(i8* %s) nounwind
842 ; Trivial retain+release pair with intervening calls - don't delete!
844 ; CHECK: define void @test10(
845 ; CHECK: @objc_retain(i8* %x)
847 ; CHECK: @use_pointer
848 ; CHECK: @objc_release
850 define void @test10(i8* %x) nounwind {
852 %0 = call i8* @objc_retain(i8* %x) nounwind
854 call void @use_pointer(i8* %x)
855 call void @objc_release(i8* %0) nounwind
859 ; Trivial retain+autoreleaserelease pair. Don't delete!
860 ; Also, add a tail keyword, since objc_retain can never be passed
863 ; CHECK: define void @test11(
864 ; CHECK: tail call i8* @objc_retain(i8* %x) [[NUW]]
865 ; CHECK: call i8* @objc_autorelease(i8* %0) [[NUW]]
867 define void @test11(i8* %x) nounwind {
869 %0 = call i8* @objc_retain(i8* %x) nounwind
870 call i8* @objc_autorelease(i8* %0) nounwind
871 call void @use_pointer(i8* %x)
875 ; Same as test11 but with no use_pointer call. Delete the pair!
877 ; CHECK: define void @test11a(
879 ; CHECK-NEXT: ret void
881 define void @test11a(i8* %x) nounwind {
883 %0 = call i8* @objc_retain(i8* %x) nounwind
884 call i8* @objc_autorelease(i8* %0) nounwind
888 ; Same as test11 but the value is returned. Do not perform an RV optimization
889 ; since if the frontend emitted code for an __autoreleasing variable, we may
890 ; want it to be in the autorelease pool.
892 ; CHECK: define i8* @test11b(
893 ; CHECK: tail call i8* @objc_retain(i8* %x) [[NUW]]
894 ; CHECK: call i8* @objc_autorelease(i8* %0) [[NUW]]
896 define i8* @test11b(i8* %x) nounwind {
898 %0 = call i8* @objc_retain(i8* %x) nounwind
899 call i8* @objc_autorelease(i8* %0) nounwind
903 ; Trivial retain,release pair with intervening call, but it's dominated
904 ; by another retain - delete!
906 ; CHECK: define void @test12(
908 ; CHECK-NEXT: @objc_retain(i8* %x)
911 define void @test12(i8* %x, i64 %n) {
913 call i8* @objc_retain(i8* %x) nounwind
914 call i8* @objc_retain(i8* %x) nounwind
915 call void @use_pointer(i8* %x)
916 call void @use_pointer(i8* %x)
917 call void @objc_release(i8* %x) nounwind
921 ; Trivial retain,autorelease pair. Don't delete!
923 ; CHECK: define void @test13(
924 ; CHECK: tail call i8* @objc_retain(i8* %x) [[NUW]]
925 ; CHECK: tail call i8* @objc_retain(i8* %x) [[NUW]]
926 ; CHECK: @use_pointer(i8* %x)
927 ; CHECK: call i8* @objc_autorelease(i8* %x) [[NUW]]
929 define void @test13(i8* %x, i64 %n) {
931 call i8* @objc_retain(i8* %x) nounwind
932 call i8* @objc_retain(i8* %x) nounwind
933 call void @use_pointer(i8* %x)
934 call i8* @objc_autorelease(i8* %x) nounwind
938 ; Delete the retain+release pair.
940 ; CHECK: define void @test13b
942 ; CHECK-NEXT: @objc_retain(i8* %x)
943 ; CHECK-NEXT: @use_pointer
944 ; CHECK-NEXT: @use_pointer
945 ; CHECK-NEXT: ret void
946 define void @test13b(i8* %x, i64 %n) {
948 call i8* @objc_retain(i8* %x) nounwind
949 call i8* @objc_retain(i8* %x) nounwind
950 call void @use_pointer(i8* %x)
951 call void @use_pointer(i8* %x)
952 call void @objc_release(i8* %x) nounwind
956 ; Don't delete the retain+release pair because there's an
957 ; autoreleasePoolPop in the way.
959 ; CHECK: define void @test13c
960 ; CHECK: @objc_retain(i8* %x)
961 ; CHECK: @objc_autoreleasePoolPop
962 ; CHECK: @objc_retain(i8* %x)
963 ; CHECK: @use_pointer
964 ; CHECK: @objc_release
966 define void @test13c(i8* %x, i64 %n) {
968 call i8* @objc_retain(i8* %x) nounwind
969 call void @objc_autoreleasePoolPop(i8* undef)
970 call i8* @objc_retain(i8* %x) nounwind
971 call void @use_pointer(i8* %x)
972 call void @use_pointer(i8* %x)
973 call void @objc_release(i8* %x) nounwind
977 ; Like test13c, but there's an autoreleasePoolPush in the way, but that
980 ; CHECK: define void @test13d
982 ; CHECK-NEXT: @objc_retain(i8* %x)
983 ; CHECK-NEXT: @objc_autoreleasePoolPush
984 ; CHECK-NEXT: @use_pointer
985 ; CHECK-NEXT: @use_pointer
986 ; CHECK-NEXT: ret void
987 define void @test13d(i8* %x, i64 %n) {
989 call i8* @objc_retain(i8* %x) nounwind
990 call i8* @objc_autoreleasePoolPush()
991 call i8* @objc_retain(i8* %x) nounwind
992 call void @use_pointer(i8* %x)
993 call void @use_pointer(i8* %x)
994 call void @objc_release(i8* %x) nounwind
998 ; Trivial retain,release pair with intervening call, but it's post-dominated
999 ; by another release - delete!
1001 ; CHECK: define void @test14(
1002 ; CHECK-NEXT: entry:
1003 ; CHECK-NEXT: @use_pointer
1004 ; CHECK-NEXT: @use_pointer
1005 ; CHECK-NEXT: @objc_release
1006 ; CHECK-NEXT: ret void
1008 define void @test14(i8* %x, i64 %n) {
1010 call i8* @objc_retain(i8* %x) nounwind
1011 call void @use_pointer(i8* %x)
1012 call void @use_pointer(i8* %x)
1013 call void @objc_release(i8* %x) nounwind
1014 call void @objc_release(i8* %x) nounwind
1018 ; Trivial retain,autorelease pair with intervening call, but it's post-dominated
1019 ; by another release. Don't delete anything.
1021 ; CHECK: define void @test15(
1022 ; CHECK-NEXT: entry:
1023 ; CHECK-NEXT: @objc_retain(i8* %x)
1024 ; CHECK-NEXT: @use_pointer
1025 ; CHECK-NEXT: @objc_autorelease(i8* %x)
1026 ; CHECK-NEXT: @objc_release
1027 ; CHECK-NEXT: ret void
1029 define void @test15(i8* %x, i64 %n) {
1031 call i8* @objc_retain(i8* %x) nounwind
1032 call void @use_pointer(i8* %x)
1033 call i8* @objc_autorelease(i8* %x) nounwind
1034 call void @objc_release(i8* %x) nounwind
1038 ; Trivial retain,autorelease pair, post-dominated
1039 ; by another release. Delete the retain and release.
1041 ; CHECK: define void @test15b
1042 ; CHECK-NEXT: entry:
1043 ; CHECK-NEXT: @objc_retain
1044 ; CHECK-NEXT: @objc_autorelease
1045 ; CHECK-NEXT: @objc_release
1046 ; CHECK-NEXT: ret void
1048 define void @test15b(i8* %x, i64 %n) {
1050 call i8* @objc_retain(i8* %x) nounwind
1051 call i8* @objc_autorelease(i8* %x) nounwind
1052 call void @objc_release(i8* %x) nounwind
1056 ; CHECK: define void @test15c
1057 ; CHECK-NEXT: entry:
1058 ; CHECK-NEXT: @objc_autorelease
1059 ; CHECK-NEXT: ret void
1061 define void @test15c(i8* %x, i64 %n) {
1063 call i8* @objc_retain(i8* %x) nounwind
1064 call i8* @objc_autorelease(i8* %x) nounwind
1065 call void @objc_release(i8* %x) nounwind, !clang.imprecise_release !0
1069 ; Retain+release pairs in diamonds, all dominated by a retain.
1071 ; CHECK: define void @test16a(
1072 ; CHECK: @objc_retain(i8* %x)
1075 define void @test16a(i1 %a, i1 %b, i8* %x) {
1077 call i8* @objc_retain(i8* %x) nounwind
1078 br i1 %a, label %red, label %orange
1081 call i8* @objc_retain(i8* %x) nounwind
1085 call i8* @objc_retain(i8* %x) nounwind
1089 call void @use_pointer(i8* %x)
1090 call void @use_pointer(i8* %x)
1091 br i1 %b, label %green, label %blue
1094 call void @objc_release(i8* %x) nounwind
1098 call void @objc_release(i8* %x) nounwind
1105 ; CHECK: define void @test16b(
1106 ; CHECK: @objc_retain(i8* %x)
1109 define void @test16b(i1 %a, i1 %b, i8* %x) {
1111 call i8* @objc_retain(i8* %x) nounwind
1112 br i1 %a, label %red, label %orange
1115 call i8* @objc_retain(i8* %x) nounwind
1119 call i8* @objc_retain(i8* %x) nounwind
1123 call void @use_pointer(i8* %x)
1124 call void @use_pointer(i8* %x)
1125 br i1 %b, label %green, label %blue
1128 call void @objc_release(i8* %x) nounwind, !clang.imprecise_release !0
1132 call void @objc_release(i8* %x) nounwind
1139 ; CHECK: define void @test16c(
1140 ; CHECK: @objc_retain(i8* %x)
1143 define void @test16c(i1 %a, i1 %b, i8* %x) {
1145 call i8* @objc_retain(i8* %x) nounwind
1146 br i1 %a, label %red, label %orange
1149 call i8* @objc_retain(i8* %x) nounwind
1153 call i8* @objc_retain(i8* %x) nounwind
1157 call void @use_pointer(i8* %x)
1158 call void @use_pointer(i8* %x)
1159 br i1 %b, label %green, label %blue
1162 call void @objc_release(i8* %x) nounwind, !clang.imprecise_release !0
1166 call void @objc_release(i8* %x) nounwind, !clang.imprecise_release !0
1173 ; CHECK: define void @test16d(
1174 ; CHECK: @objc_retain(i8* %x)
1177 define void @test16d(i1 %a, i1 %b, i8* %x) {
1179 call i8* @objc_retain(i8* %x) nounwind
1180 br i1 %a, label %red, label %orange
1183 call i8* @objc_retain(i8* %x) nounwind
1187 call i8* @objc_retain(i8* %x) nounwind
1191 call void @use_pointer(i8* %x)
1192 call void @use_pointer(i8* %x)
1193 br i1 %b, label %green, label %blue
1196 call void @objc_release(i8* %x) nounwind
1200 call void @objc_release(i8* %x) nounwind, !clang.imprecise_release !0
1208 ; Retain+release pairs in diamonds, all post-dominated by a release.
1210 ; CHECK: define void @test17(
1213 ; CHECK: @objc_release
1215 define void @test17(i1 %a, i1 %b, i8* %x) {
1217 br i1 %a, label %red, label %orange
1220 call i8* @objc_retain(i8* %x) nounwind
1224 call i8* @objc_retain(i8* %x) nounwind
1228 call void @use_pointer(i8* %x)
1229 call void @use_pointer(i8* %x)
1230 br i1 %b, label %green, label %blue
1233 call void @objc_release(i8* %x) nounwind
1237 call void @objc_release(i8* %x) nounwind
1241 call void @objc_release(i8* %x) nounwind
1247 ; CHECK: define void @test18(
1250 define void @test18() {
1251 call i8* @objc_retain(i8* null)
1252 call void @objc_release(i8* null)
1253 call i8* @objc_autorelease(i8* null)
1257 ; Delete no-ops where undef can be assumed to be null.
1259 ; CHECK: define void @test18b
1262 define void @test18b() {
1263 call i8* @objc_retain(i8* undef)
1264 call void @objc_release(i8* undef)
1265 call i8* @objc_autorelease(i8* undef)
1269 ; Replace uses of arguments with uses of return values, to reduce
1270 ; register pressure.
1272 ; CHECK: define void @test19(i32* %y) {
1273 ; CHECK: %z = bitcast i32* %y to i8*
1274 ; CHECK: %0 = bitcast i32* %y to i8*
1275 ; CHECK: %1 = tail call i8* @objc_retain(i8* %0)
1276 ; CHECK: call void @use_pointer(i8* %z)
1277 ; CHECK: call void @use_pointer(i8* %z)
1278 ; CHECK: %2 = bitcast i32* %y to i8*
1279 ; CHECK: call void @objc_release(i8* %2)
1282 define void @test19(i32* %y) {
1284 %x = bitcast i32* %y to i8*
1285 %0 = call i8* @objc_retain(i8* %x) nounwind
1286 %z = bitcast i32* %y to i8*
1287 call void @use_pointer(i8* %z)
1288 call void @use_pointer(i8* %z)
1289 call void @objc_release(i8* %x)
1295 ; CHECK: define void @test20(
1296 ; CHECK: %tmp1 = tail call i8* @objc_retain(i8* %tmp) [[NUW]]
1297 ; CHECK-NEXT: invoke
1298 define void @test20(double* %self) {
1300 %tmp = bitcast double* %self to i8*
1301 %tmp1 = call i8* @objc_retain(i8* %tmp) nounwind
1302 invoke void @invokee()
1303 to label %invoke.cont23 unwind label %lpad20
1305 invoke.cont23: ; preds = %if.then12
1306 invoke void @invokee()
1307 to label %if.end unwind label %lpad20
1309 lpad20: ; preds = %invoke.cont23, %if.then12
1310 %tmp502 = phi double* [ undef, %invoke.cont23 ], [ %self, %if.then12 ]
1311 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
1315 if.end: ; preds = %invoke.cont23
1319 ; Delete a redundant retain,autorelease when forwaring a call result
1320 ; directly to a return value.
1322 ; CHECK: define i8* @test21(
1323 ; CHECK: call i8* @returner()
1324 ; CHECK-NEXT: ret i8* %call
1325 define i8* @test21() {
1327 %call = call i8* @returner()
1328 %0 = call i8* @objc_retain(i8* %call) nounwind
1329 %1 = call i8* @objc_autorelease(i8* %0) nounwind
1333 ; Move an objc call up through a phi that has null operands.
1335 ; CHECK: define void @test22(
1337 ; CHECK: %1 = bitcast double* %p to i8*
1338 ; CHECK: call void @objc_release(i8* %1)
1339 ; CHECK: br label %C
1340 ; CHECK: C: ; preds = %B, %A
1341 ; CHECK-NOT: @objc_release
1343 define void @test22(double* %p, i1 %a) {
1344 br i1 %a, label %A, label %B
1350 %h = phi double* [ null, %A ], [ %p, %B ]
1351 %c = bitcast double* %h to i8*
1352 call void @objc_release(i8* %c)
1356 ; Optimize objc_retainBlock.
1358 ; CHECK: define void @test23(
1361 %block0 = type { i64, i64, i8*, i8* }
1362 %block1 = type { i8**, i32, i32, i32 (%struct.__block_literal_1*)*, %block0* }
1363 %struct.__block_descriptor = type { i64, i64 }
1364 %struct.__block_literal_1 = type { i8**, i32, i32, i8**, %struct.__block_descriptor* }
1365 @__block_holder_tmp_1 = external constant %block1
1366 define void @test23() {
1368 %0 = call i8* @objc_retainBlock(i8* bitcast (%block1* @__block_holder_tmp_1 to i8*)) nounwind, !clang.arc.copy_on_escape !0
1369 call void @bar(i32 ()* bitcast (%block1* @__block_holder_tmp_1 to i32 ()*))
1370 call void @bar(i32 ()* bitcast (%block1* @__block_holder_tmp_1 to i32 ()*))
1371 call void @objc_release(i8* bitcast (%block1* @__block_holder_tmp_1 to i8*)) nounwind
1375 ; Don't optimize objc_retainBlock, but do strength reduce it.
1377 ; CHECK: define void @test23b
1378 ; CHECK: @objc_retain
1379 ; CHECK: @objc_release
1381 define void @test23b(i8* %p) {
1383 %0 = call i8* @objc_retainBlock(i8* %p) nounwind, !clang.arc.copy_on_escape !0
1385 call void @use_pointer(i8* %p)
1386 call void @objc_release(i8* %p) nounwind
1390 ; Don't optimize objc_retainBlock, because there's no copy_on_escape metadata.
1392 ; CHECK: define void @test23c(
1393 ; CHECK: @objc_retainBlock
1394 ; CHECK: @objc_release
1396 define void @test23c() {
1398 %0 = call i8* @objc_retainBlock(i8* bitcast (%block1* @__block_holder_tmp_1 to i8*)) nounwind
1399 call void @bar(i32 ()* bitcast (%block1* @__block_holder_tmp_1 to i32 ()*))
1400 call void @bar(i32 ()* bitcast (%block1* @__block_holder_tmp_1 to i32 ()*))
1401 call void @objc_release(i8* bitcast (%block1* @__block_holder_tmp_1 to i8*)) nounwind
1405 ; Any call can decrement a retain count.
1407 ; CHECK: define void @test24(
1408 ; CHECK: @objc_retain(i8* %a)
1409 ; CHECK: @objc_release
1411 define void @test24(i8* %r, i8* %a) {
1412 call i8* @objc_retain(i8* %a)
1413 call void @use_pointer(i8* %r)
1415 call void @objc_release(i8* %a)
1419 ; Don't move a retain/release pair if the release can be moved
1420 ; but the retain can't be moved to balance it.
1422 ; CHECK: define void @test25(
1424 ; CHECK: call i8* @objc_retain(i8* %p)
1427 ; CHECK: call void @objc_release(i8* %p)
1429 define void @test25(i8* %p, i1 %x) {
1431 %f0 = call i8* @objc_retain(i8* %p)
1433 br i1 %x, label %true, label %done
1440 call void @objc_release(i8* %p)
1444 ; Don't move a retain/release pair if the retain can be moved
1445 ; but the release can't be moved to balance it.
1447 ; CHECK: define void @test26(
1449 ; CHECK: call i8* @objc_retain(i8* %p)
1452 ; CHECK: call void @objc_release(i8* %p)
1454 define void @test26(i8* %p, i1 %x) {
1456 %f0 = call i8* @objc_retain(i8* %p)
1457 br i1 %x, label %true, label %done
1465 call void @objc_release(i8* %p)
1469 ; Don't sink the retain,release into the loop.
1471 ; CHECK: define void @test27(
1473 ; CHECK: call i8* @objc_retain(i8* %p)
1477 ; CHECK: call void @objc_release
1479 define void @test27(i8* %p, i1 %x, i1 %y) {
1481 %f0 = call i8* @objc_retain(i8* %p)
1482 br i1 %x, label %loop, label %done
1487 br i1 %y, label %done, label %loop
1490 call void @objc_release(i8* %p)
1494 ; Trivial code motion case: Triangle.
1496 ; CHECK: define void @test28(
1499 ; CHECK: call i8* @objc_retain(
1500 ; CHECK: call void @callee()
1502 ; CHECK: call void @objc_release
1506 define void @test28(i8* %p, i1 %x) {
1508 %f0 = call i8* @objc_retain(i8* %p)
1509 br i1 %x, label %true, label %done
1517 call void @objc_release(i8* %p), !clang.imprecise_release !0
1521 ; Trivial code motion case: Triangle, but no metadata. Don't move past
1522 ; unrelated memory references!
1524 ; CHECK: define void @test28b
1525 ; CHECK: call i8* @objc_retain(
1528 ; CHECK: call void @callee()
1533 ; CHECK: @objc_release
1535 define void @test28b(i8* %p, i1 %x, i8* noalias %t) {
1537 %f0 = call i8* @objc_retain(i8* %p)
1538 br i1 %x, label %true, label %done
1547 call void @objc_release(i8* %p)
1551 ; Trivial code motion case: Triangle, with metadata. Do move past
1552 ; unrelated memory references! And preserve the metadata.
1554 ; CHECK: define void @test28c
1557 ; CHECK: call i8* @objc_retain(
1558 ; CHECK: call void @callee()
1560 ; CHECK: call void @objc_release(i8* %p) [[NUW]], !clang.imprecise_release
1564 define void @test28c(i8* %p, i1 %x, i8* noalias %t) {
1566 %f0 = call i8* @objc_retain(i8* %p)
1567 br i1 %x, label %true, label %done
1576 call void @objc_release(i8* %p), !clang.imprecise_release !0
1580 ; Like test28. but with two releases.
1582 ; CHECK: define void @test29(
1585 ; CHECK: call i8* @objc_retain(
1586 ; CHECK: call void @callee()
1588 ; CHECK: call void @objc_release
1589 ; CHECK-NOT: @objc_release
1595 define void @test29(i8* %p, i1 %x, i1 %y) {
1597 %f0 = call i8* @objc_retain(i8* %p)
1598 br i1 %x, label %true, label %done
1603 br i1 %y, label %done, label %ohno
1606 call void @objc_release(i8* %p)
1610 call void @objc_release(i8* %p)
1614 ; Basic case with the use and call in a diamond
1615 ; with an extra release.
1617 ; CHECK: define void @test30(
1620 ; CHECK: call i8* @objc_retain(
1621 ; CHECK: call void @callee()
1623 ; CHECK: call void @objc_release
1624 ; CHECK-NOT: @objc_release
1632 define void @test30(i8* %p, i1 %x, i1 %y, i1 %z) {
1634 %f0 = call i8* @objc_retain(i8* %p)
1635 br i1 %x, label %true, label %false
1640 br i1 %y, label %done, label %ohno
1643 br i1 %z, label %done, label %ohno
1646 call void @objc_release(i8* %p)
1650 call void @objc_release(i8* %p)
1654 ; Basic case with a mergeable release.
1656 ; CHECK: define void @test31(
1657 ; CHECK: call i8* @objc_retain(i8* %p)
1658 ; CHECK: call void @callee()
1660 ; CHECK: call void @objc_release
1661 ; CHECK-NOT: @objc_release
1663 ; CHECK-NOT: @objc_release
1665 ; CHECK-NOT: @objc_release
1667 ; CHECK-NOT: @objc_release
1669 define void @test31(i8* %p, i1 %x) {
1671 %f0 = call i8* @objc_retain(i8* %p)
1674 br i1 %x, label %true, label %false
1676 call void @objc_release(i8* %p)
1679 call void @objc_release(i8* %p)
1683 ; Don't consider bitcasts or getelementptrs direct uses.
1685 ; CHECK: define void @test32(
1688 ; CHECK: call i8* @objc_retain(
1689 ; CHECK: call void @callee()
1691 ; CHECK: call void @objc_release
1695 define void @test32(i8* %p, i1 %x) {
1697 %f0 = call i8* @objc_retain(i8* %p)
1698 br i1 %x, label %true, label %done
1706 %g = bitcast i8* %p to i8*
1707 %h = getelementptr i8* %g, i64 0
1708 call void @objc_release(i8* %g)
1712 ; Do consider icmps to be direct uses.
1714 ; CHECK: define void @test33(
1717 ; CHECK: call i8* @objc_retain(
1718 ; CHECK: call void @callee()
1720 ; CHECK: call void @objc_release
1724 define void @test33(i8* %p, i1 %x, i8* %y) {
1726 %f0 = call i8* @objc_retain(i8* %p)
1727 br i1 %x, label %true, label %done
1731 %v = icmp eq i8* %p, %y
1735 %g = bitcast i8* %p to i8*
1736 %h = getelementptr i8* %g, i64 0
1737 call void @objc_release(i8* %g)
1741 ; Delete retain,release if there's just a possible dec and we have imprecise
1744 ; CHECK: define void @test34a(
1745 ; CHECK: call i8* @objc_retain
1748 ; CHECK: call void @objc_release
1750 define void @test34a(i8* %p, i1 %x, i8* %y) {
1752 %f0 = call i8* @objc_retain(i8* %p)
1753 br i1 %x, label %true, label %done
1760 %g = bitcast i8* %p to i8*
1761 %h = getelementptr i8* %g, i64 0
1762 call void @objc_release(i8* %g)
1766 ; CHECK: define void @test34b(
1769 define void @test34b(i8* %p, i1 %x, i8* %y) {
1771 %f0 = call i8* @objc_retain(i8* %p)
1772 br i1 %x, label %true, label %done
1779 %g = bitcast i8* %p to i8*
1780 %h = getelementptr i8* %g, i64 0
1781 call void @objc_release(i8* %g), !clang.imprecise_release !0
1786 ; Delete retain,release if there's just a use and we do not have a precise
1790 ; CHECK: define void @test35a(
1792 ; CHECK: call i8* @objc_retain
1795 ; CHECK: call void @objc_release
1797 define void @test35a(i8* %p, i1 %x, i8* %y) {
1799 %f0 = call i8* @objc_retain(i8* %p)
1800 br i1 %x, label %true, label %done
1803 %v = icmp eq i8* %p, %y
1807 %g = bitcast i8* %p to i8*
1808 %h = getelementptr i8* %g, i64 0
1809 call void @objc_release(i8* %g)
1814 ; CHECK: define void @test35b(
1817 define void @test35b(i8* %p, i1 %x, i8* %y) {
1819 %f0 = call i8* @objc_retain(i8* %p)
1820 br i1 %x, label %true, label %done
1823 %v = icmp eq i8* %p, %y
1827 %g = bitcast i8* %p to i8*
1828 %h = getelementptr i8* %g, i64 0
1829 call void @objc_release(i8* %g), !clang.imprecise_release !0
1833 ; Delete a retain,release if there's no actual use and we have precise release.
1835 ; CHECK: define void @test36a(
1836 ; CHECK: @objc_retain
1837 ; CHECK: call void @callee()
1839 ; CHECK: call void @callee()
1840 ; CHECK: @objc_release
1842 define void @test36a(i8* %p) {
1844 call i8* @objc_retain(i8* %p)
1847 call void @objc_release(i8* %p)
1851 ; Like test36, but with metadata.
1853 ; CHECK: define void @test36b(
1856 define void @test36b(i8* %p) {
1858 call i8* @objc_retain(i8* %p)
1861 call void @objc_release(i8* %p), !clang.imprecise_release !0
1865 ; Be aggressive about analyzing phis to eliminate possible uses.
1867 ; CHECK: define void @test38(
1870 define void @test38(i8* %p, i1 %u, i1 %m, i8* %z, i8* %y, i8* %x, i8* %w) {
1872 call i8* @objc_retain(i8* %p)
1873 br i1 %u, label %true, label %false
1875 br i1 %m, label %a, label %b
1877 br i1 %m, label %c, label %d
1887 %j = phi i8* [ %z, %a ], [ %y, %b ]
1890 %k = phi i8* [ %w, %c ], [ %x, %d ]
1893 %h = phi i8* [ %j, %e ], [ %k, %f ]
1894 call void @use_pointer(i8* %h)
1895 call void @objc_release(i8* %p), !clang.imprecise_release !0
1899 ; Delete retain,release pairs around loops.
1901 ; CHECK: define void @test39(
1904 define void @test39(i8* %p) {
1906 %0 = call i8* @objc_retain(i8* %p)
1909 loop: ; preds = %loop, %entry
1910 br i1 undef, label %loop, label %exit
1912 exit: ; preds = %loop
1913 call void @objc_release(i8* %0), !clang.imprecise_release !0
1917 ; Delete retain,release pairs around loops containing uses.
1919 ; CHECK: define void @test39b(
1922 define void @test39b(i8* %p) {
1924 %0 = call i8* @objc_retain(i8* %p)
1927 loop: ; preds = %loop, %entry
1929 br i1 undef, label %loop, label %exit
1931 exit: ; preds = %loop
1932 call void @objc_release(i8* %0), !clang.imprecise_release !0
1936 ; Delete retain,release pairs around loops containing potential decrements.
1938 ; CHECK: define void @test39c(
1941 define void @test39c(i8* %p) {
1943 %0 = call i8* @objc_retain(i8* %p)
1946 loop: ; preds = %loop, %entry
1947 call void @use_pointer(i8* %0)
1948 br i1 undef, label %loop, label %exit
1950 exit: ; preds = %loop
1951 call void @objc_release(i8* %0), !clang.imprecise_release !0
1955 ; Delete retain,release pairs around loops even if
1956 ; the successors are in a different order.
1958 ; CHECK: define void @test40(
1961 define void @test40(i8* %p) {
1963 %0 = call i8* @objc_retain(i8* %p)
1966 loop: ; preds = %loop, %entry
1967 call void @use_pointer(i8* %0)
1968 br i1 undef, label %exit, label %loop
1970 exit: ; preds = %loop
1971 call void @objc_release(i8* %0), !clang.imprecise_release !0
1975 ; Do the known-incremented retain+release elimination even if the pointer
1976 ; is also autoreleased.
1978 ; CHECK: define void @test42(
1979 ; CHECK-NEXT: entry:
1980 ; CHECK-NEXT: call i8* @objc_retain(i8* %p)
1981 ; CHECK-NEXT: call i8* @objc_autorelease(i8* %p)
1982 ; CHECK-NEXT: call void @use_pointer(i8* %p)
1983 ; CHECK-NEXT: call void @use_pointer(i8* %p)
1984 ; CHECK-NEXT: ret void
1986 define void @test42(i8* %p) {
1988 call i8* @objc_retain(i8* %p)
1989 call i8* @objc_autorelease(i8* %p)
1990 call i8* @objc_retain(i8* %p)
1991 call void @use_pointer(i8* %p)
1992 call void @use_pointer(i8* %p)
1993 call void @objc_release(i8* %p)
1997 ; Don't the known-incremented retain+release elimination if the pointer is
1998 ; autoreleased and there's an autoreleasePoolPop.
2000 ; CHECK: define void @test43(
2001 ; CHECK-NEXT: entry:
2002 ; CHECK-NEXT: call i8* @objc_retain(i8* %p)
2003 ; CHECK-NEXT: call i8* @objc_autorelease(i8* %p)
2004 ; CHECK-NEXT: call i8* @objc_retain
2005 ; CHECK-NEXT: call void @use_pointer(i8* %p)
2006 ; CHECK-NEXT: call void @use_pointer(i8* %p)
2007 ; CHECK-NEXT: call void @objc_autoreleasePoolPop(i8* undef)
2008 ; CHECK-NEXT: call void @objc_release
2009 ; CHECK-NEXT: ret void
2011 define void @test43(i8* %p) {
2013 call i8* @objc_retain(i8* %p)
2014 call i8* @objc_autorelease(i8* %p)
2015 call i8* @objc_retain(i8* %p)
2016 call void @use_pointer(i8* %p)
2017 call void @use_pointer(i8* %p)
2018 call void @objc_autoreleasePoolPop(i8* undef)
2019 call void @objc_release(i8* %p)
2023 ; Do the known-incremented retain+release elimination if the pointer is
2024 ; autoreleased and there's an autoreleasePoolPush.
2026 ; CHECK: define void @test43b
2027 ; CHECK-NEXT: entry:
2028 ; CHECK-NEXT: call i8* @objc_retain(i8* %p)
2029 ; CHECK-NEXT: call i8* @objc_autorelease(i8* %p)
2030 ; CHECK-NEXT: call void @use_pointer(i8* %p)
2031 ; CHECK-NEXT: call void @use_pointer(i8* %p)
2032 ; CHECK-NEXT: call i8* @objc_autoreleasePoolPush()
2033 ; CHECK-NEXT: ret void
2035 define void @test43b(i8* %p) {
2037 call i8* @objc_retain(i8* %p)
2038 call i8* @objc_autorelease(i8* %p)
2039 call i8* @objc_retain(i8* %p)
2040 call void @use_pointer(i8* %p)
2041 call void @use_pointer(i8* %p)
2042 call i8* @objc_autoreleasePoolPush()
2043 call void @objc_release(i8* %p)
2047 ; Do retain+release elimination for non-provenance pointers.
2049 ; CHECK: define void @test44(
2052 define void @test44(i8** %pp) {
2054 %q = call i8* @objc_retain(i8* %p)
2055 call void @objc_release(i8* %q)
2059 ; Don't delete retain+release with an unknown-provenance
2060 ; may-alias objc_release between them.
2062 ; CHECK: define void @test45(
2063 ; CHECK: call i8* @objc_retain(i8* %p)
2064 ; CHECK: call void @objc_release(i8* %q)
2065 ; CHECK: call void @use_pointer(i8* %p)
2066 ; CHECK: call void @objc_release(i8* %p)
2067 define void @test45(i8** %pp, i8** %qq) {
2070 call i8* @objc_retain(i8* %p)
2071 call void @objc_release(i8* %q)
2072 call void @use_pointer(i8* %p)
2073 call void @objc_release(i8* %p)
2077 ; Don't delete retain and autorelease here.
2079 ; CHECK: define void @test46(
2080 ; CHECK: tail call i8* @objc_retain(i8* %p) [[NUW]]
2082 ; CHECK: call i8* @objc_autorelease(i8* %p) [[NUW]]
2083 define void @test46(i8* %p, i1 %a) {
2085 call i8* @objc_retain(i8* %p)
2086 br i1 %a, label %true, label %false
2089 call i8* @objc_autorelease(i8* %p)
2090 call void @use_pointer(i8* %p)
2097 ; Delete no-op cast calls.
2099 ; CHECK: define i8* @test47(
2102 define i8* @test47(i8* %p) nounwind {
2103 %x = call i8* @objc_retainedObject(i8* %p)
2107 ; Delete no-op cast calls.
2109 ; CHECK: define i8* @test48(
2112 define i8* @test48(i8* %p) nounwind {
2113 %x = call i8* @objc_unretainedObject(i8* %p)
2117 ; Delete no-op cast calls.
2119 ; CHECK: define i8* @test49(
2122 define i8* @test49(i8* %p) nounwind {
2123 %x = call i8* @objc_unretainedPointer(i8* %p)
2127 ; Do delete retain+release with intervening stores of the address value if we
2128 ; have imprecise release attached to objc_release.
2130 ; CHECK: define void @test50a(
2131 ; CHECK-NEXT: call i8* @objc_retain
2132 ; CHECK-NEXT: call void @callee
2134 ; CHECK-NEXT: call void @objc_release
2135 ; CHECK-NEXT: ret void
2137 define void @test50a(i8* %p, i8** %pp) {
2138 call i8* @objc_retain(i8* %p)
2140 store i8* %p, i8** %pp
2141 call void @objc_release(i8* %p)
2145 ; CHECK: define void @test50b(
2148 define void @test50b(i8* %p, i8** %pp) {
2149 call i8* @objc_retain(i8* %p)
2151 store i8* %p, i8** %pp
2152 call void @objc_release(i8* %p), !clang.imprecise_release !0
2157 ; Don't delete retain+release with intervening stores through the
2160 ; CHECK: define void @test51a(
2161 ; CHECK: call i8* @objc_retain(i8* %p)
2162 ; CHECK: call void @objc_release(i8* %p)
2165 define void @test51a(i8* %p) {
2166 call i8* @objc_retain(i8* %p)
2169 call void @objc_release(i8* %p)
2173 ; CHECK: define void @test51b(
2174 ; CHECK: call i8* @objc_retain(i8* %p)
2175 ; CHECK: call void @objc_release(i8* %p)
2178 define void @test51b(i8* %p) {
2179 call i8* @objc_retain(i8* %p)
2182 call void @objc_release(i8* %p), !clang.imprecise_release !0
2186 ; Don't delete retain+release with intervening use of a pointer of
2187 ; unknown provenance.
2189 ; CHECK: define void @test52a(
2190 ; CHECK: call i8* @objc_retain
2191 ; CHECK: call void @callee()
2192 ; CHECK: call void @use_pointer(i8* %z)
2193 ; CHECK: call void @objc_release
2196 define void @test52a(i8** %zz, i8** %pp) {
2198 %1 = call i8* @objc_retain(i8* %p)
2201 call void @use_pointer(i8* %z)
2202 call void @objc_release(i8* %p)
2206 ; CHECK: define void @test52b(
2207 ; CHECK: call i8* @objc_retain
2208 ; CHECK: call void @callee()
2209 ; CHECK: call void @use_pointer(i8* %z)
2210 ; CHECK: call void @objc_release
2213 define void @test52b(i8** %zz, i8** %pp) {
2215 %1 = call i8* @objc_retain(i8* %p)
2218 call void @use_pointer(i8* %z)
2219 call void @objc_release(i8* %p), !clang.imprecise_release !0
2223 ; Like test52, but the pointer has function type, so it's assumed to
2224 ; be not reference counted.
2225 ; Oops. That's wrong. Clang sometimes uses function types gratuitously.
2226 ; See rdar://10551239.
2228 ; CHECK: define void @test53(
2231 define void @test53(void ()** %zz, i8** %pp) {
2233 %1 = call i8* @objc_retain(i8* %p)
2235 %z = load void ()** %zz
2236 call void @callee_fnptr(void ()* %z)
2237 call void @objc_release(i8* %p)
2241 ; Convert autorelease to release if the value is unused.
2243 ; CHECK: define void @test54(
2244 ; CHECK: call i8* @returner()
2245 ; CHECK-NEXT: call void @objc_release(i8* %t) [[NUW]], !clang.imprecise_release !0
2246 ; CHECK-NEXT: ret void
2247 define void @test54() {
2248 %t = call i8* @returner()
2249 call i8* @objc_autorelease(i8* %t)
2253 ; Nested retain+release pairs. Delete them both.
2255 ; CHECK: define void @test55(
2258 define void @test55(i8* %x) {
2260 %0 = call i8* @objc_retain(i8* %x) nounwind
2261 %1 = call i8* @objc_retain(i8* %x) nounwind
2262 call void @objc_release(i8* %x) nounwind
2263 call void @objc_release(i8* %x) nounwind
2267 ; Nested retain+release pairs where the inner pair depends
2268 ; on the outer pair to be removed, and then the outer pair
2269 ; can be partially eliminated. Plus an extra outer pair to
2270 ; eliminate, for fun.
2272 ; CHECK: define void @test56(
2275 ; CHECK-NEXT: %0 = tail call i8* @objc_retain(i8* %x) [[NUW]]
2276 ; CHECK-NEXT: tail call void @use_pointer(i8* %x)
2277 ; CHECK-NEXT: tail call void @use_pointer(i8* %x)
2278 ; CHECK-NEXT: tail call void @objc_release(i8* %x) [[NUW]], !clang.imprecise_release !0
2279 ; CHECK-NEXT: br label %if.end
2282 define void @test56(i8* %x, i32 %n) {
2284 %0 = tail call i8* @objc_retain(i8* %x) nounwind
2285 %1 = tail call i8* @objc_retain(i8* %0) nounwind
2286 %tobool = icmp eq i32 %n, 0
2287 br i1 %tobool, label %if.end, label %if.then
2289 if.then: ; preds = %entry
2290 %2 = tail call i8* @objc_retain(i8* %1) nounwind
2291 tail call void @use_pointer(i8* %2)
2292 tail call void @use_pointer(i8* %2)
2293 tail call void @objc_release(i8* %2) nounwind, !clang.imprecise_release !0
2296 if.end: ; preds = %entry, %if.then
2297 tail call void @objc_release(i8* %1) nounwind, !clang.imprecise_release !0
2298 tail call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
2302 ; When there are adjacent retain+release pairs, the first one is
2303 ; known unnecessary because the presence of the second one means that
2304 ; the first one won't be deleting the object.
2306 ; CHECK: define void @test57(
2307 ; CHECK-NEXT: entry:
2308 ; CHECK-NEXT: call void @use_pointer(i8* %x)
2309 ; CHECK-NEXT: call void @use_pointer(i8* %x)
2310 ; CHECK-NEXT: %0 = tail call i8* @objc_retain(i8* %x) [[NUW]]
2311 ; CHECK-NEXT: call void @use_pointer(i8* %x)
2312 ; CHECK-NEXT: call void @use_pointer(i8* %x)
2313 ; CHECK-NEXT: call void @objc_release(i8* %x) [[NUW]]
2314 ; CHECK-NEXT: ret void
2316 define void @test57(i8* %x) nounwind {
2318 call i8* @objc_retain(i8* %x) nounwind
2319 call void @use_pointer(i8* %x)
2320 call void @use_pointer(i8* %x)
2321 call void @objc_release(i8* %x) nounwind
2322 call i8* @objc_retain(i8* %x) nounwind
2323 call void @use_pointer(i8* %x)
2324 call void @use_pointer(i8* %x)
2325 call void @objc_release(i8* %x) nounwind
2329 ; An adjacent retain+release pair is sufficient even if it will be
2332 ; CHECK: define void @test58(
2333 ; CHECK-NEXT: entry:
2334 ; CHECK-NEXT: call void @use_pointer(i8* %x)
2335 ; CHECK-NEXT: call void @use_pointer(i8* %x)
2336 ; CHECK-NEXT: ret void
2338 define void @test58(i8* %x) nounwind {
2340 call i8* @objc_retain(i8* %x) nounwind
2341 call void @use_pointer(i8* %x)
2342 call void @use_pointer(i8* %x)
2343 call void @objc_release(i8* %x) nounwind
2344 call i8* @objc_retain(i8* %x) nounwind
2345 call void @objc_release(i8* %x) nounwind
2349 ; Don't delete the second retain+release pair in an adjacent set.
2351 ; CHECK: define void @test59(
2352 ; CHECK-NEXT: entry:
2353 ; CHECK-NEXT: %0 = tail call i8* @objc_retain(i8* %x) [[NUW]]
2354 ; CHECK-NEXT: call void @use_pointer(i8* %x)
2355 ; CHECK-NEXT: call void @use_pointer(i8* %x)
2356 ; CHECK-NEXT: call void @objc_release(i8* %x) [[NUW]]
2357 ; CHECK-NEXT: ret void
2359 define void @test59(i8* %x) nounwind {
2361 %a = call i8* @objc_retain(i8* %x) nounwind
2362 call void @objc_release(i8* %x) nounwind
2363 %b = call i8* @objc_retain(i8* %x) nounwind
2364 call void @use_pointer(i8* %x)
2365 call void @use_pointer(i8* %x)
2366 call void @objc_release(i8* %x) nounwind
2370 ; Constant pointers to objects don't need reference counting.
2372 @constptr = external constant i8*
2373 @something = external global i8*
2375 ; We have a precise lifetime retain/release here. We can not remove them since
2376 ; @something is not constant.
2378 ; CHECK: define void @test60a(
2379 ; CHECK: call i8* @objc_retain
2380 ; CHECK: call void @objc_release
2382 define void @test60a() {
2383 %t = load i8** @constptr
2384 %s = load i8** @something
2385 call i8* @objc_retain(i8* %s)
2387 call void @use_pointer(i8* %t)
2388 call void @objc_release(i8* %s)
2392 ; CHECK: define void @test60b(
2393 ; CHECK: call i8* @objc_retain
2394 ; CHECK-NOT: call i8* @objc_retain
2395 ; CHECK-NOT: call i8* @objc_rrelease
2397 define void @test60b() {
2398 %t = load i8** @constptr
2399 %s = load i8** @something
2400 call i8* @objc_retain(i8* %s)
2401 call i8* @objc_retain(i8* %s)
2403 call void @use_pointer(i8* %t)
2404 call void @objc_release(i8* %s)
2408 ; CHECK: define void @test60c(
2411 define void @test60c() {
2412 %t = load i8** @constptr
2413 %s = load i8** @something
2414 call i8* @objc_retain(i8* %s)
2416 call void @use_pointer(i8* %t)
2417 call void @objc_release(i8* %s), !clang.imprecise_release !0
2421 ; CHECK: define void @test60d(
2424 define void @test60d() {
2425 %t = load i8** @constptr
2426 %s = load i8** @something
2427 call i8* @objc_retain(i8* %t)
2429 call void @use_pointer(i8* %s)
2430 call void @objc_release(i8* %t)
2434 ; CHECK: define void @test60e(
2437 define void @test60e() {
2438 %t = load i8** @constptr
2439 %s = load i8** @something
2440 call i8* @objc_retain(i8* %t)
2442 call void @use_pointer(i8* %s)
2443 call void @objc_release(i8* %t), !clang.imprecise_release !0
2447 ; Constant pointers to objects don't need to be considered related to other
2450 ; CHECK: define void @test61(
2453 define void @test61() {
2454 %t = load i8** @constptr
2455 call i8* @objc_retain(i8* %t)
2457 call void @use_pointer(i8* %t)
2458 call void @objc_release(i8* %t)
2462 ; Delete a retain matched by releases when one is inside the loop and the
2463 ; other is outside the loop.
2465 ; CHECK: define void @test62(
2468 define void @test62(i8* %x, i1* %p) nounwind {
2473 call i8* @objc_retain(i8* %x)
2475 br i1 %q, label %loop.more, label %exit
2478 call void @objc_release(i8* %x)
2482 call void @objc_release(i8* %x)
2486 ; Like test62 but with no release in exit.
2487 ; Don't delete anything!
2489 ; CHECK: define void @test63(
2491 ; CHECK: tail call i8* @objc_retain(i8* %x)
2493 ; CHECK: call void @objc_release(i8* %x)
2495 define void @test63(i8* %x, i1* %p) nounwind {
2500 call i8* @objc_retain(i8* %x)
2502 br i1 %q, label %loop.more, label %exit
2505 call void @objc_release(i8* %x)
2512 ; Like test62 but with no release in loop.more.
2513 ; Don't delete anything!
2515 ; CHECK: define void @test64(
2517 ; CHECK: tail call i8* @objc_retain(i8* %x)
2519 ; CHECK: call void @objc_release(i8* %x)
2521 define void @test64(i8* %x, i1* %p) nounwind {
2526 call i8* @objc_retain(i8* %x)
2528 br i1 %q, label %loop.more, label %exit
2534 call void @objc_release(i8* %x)
2538 ; Move an autorelease past a phi with a null.
2540 ; CHECK: define i8* @test65(
2542 ; CHECK: call i8* @objc_autorelease(
2544 ; CHECK-NOT: @objc_autorelease
2546 define i8* @test65(i1 %x) {
2548 br i1 %x, label %return, label %if.then
2550 if.then: ; preds = %entry
2551 %c = call i8* @returner()
2552 %s = call i8* @objc_retainAutoreleasedReturnValue(i8* %c) nounwind
2555 return: ; preds = %if.then, %entry
2556 %retval = phi i8* [ %s, %if.then ], [ null, %entry ]
2557 %q = call i8* @objc_autorelease(i8* %retval) nounwind
2561 ; Don't move an autorelease past an autorelease pool boundary.
2563 ; CHECK: define i8* @test65b(
2565 ; CHECK-NOT: @objc_autorelease
2567 ; CHECK: call i8* @objc_autorelease(
2569 define i8* @test65b(i1 %x) {
2571 %t = call i8* @objc_autoreleasePoolPush()
2572 br i1 %x, label %return, label %if.then
2574 if.then: ; preds = %entry
2575 %c = call i8* @returner()
2576 %s = call i8* @objc_retainAutoreleasedReturnValue(i8* %c) nounwind
2579 return: ; preds = %if.then, %entry
2580 %retval = phi i8* [ %s, %if.then ], [ null, %entry ]
2581 call void @objc_autoreleasePoolPop(i8* %t)
2582 %q = call i8* @objc_autorelease(i8* %retval) nounwind
2586 ; Don't move an autoreleaseReuturnValue, which would break
2587 ; the RV optimization.
2589 ; CHECK: define i8* @test65c(
2591 ; CHECK-NOT: @objc_autorelease
2593 ; CHECK: call i8* @objc_autoreleaseReturnValue(
2595 define i8* @test65c(i1 %x) {
2597 br i1 %x, label %return, label %if.then
2599 if.then: ; preds = %entry
2600 %c = call i8* @returner()
2601 %s = call i8* @objc_retainAutoreleasedReturnValue(i8* %c) nounwind
2604 return: ; preds = %if.then, %entry
2605 %retval = phi i8* [ %s, %if.then ], [ null, %entry ]
2606 %q = call i8* @objc_autoreleaseReturnValue(i8* %retval) nounwind
2610 ; A few real-world testcases.
2612 @.str4 = private unnamed_addr constant [33 x i8] c"-[A z] = { %f, %f, { %f, %f } }\0A\00"
2613 @"OBJC_IVAR_$_A.myZ" = global i64 20, section "__DATA, __objc_const", align 8
2614 declare i32 @printf(i8* nocapture, ...) nounwind
2615 declare i32 @puts(i8* nocapture) nounwind
2616 @str = internal constant [16 x i8] c"-[ Top0 _getX ]\00"
2618 ; CHECK: @"\01-[A z]"
2622 define {<2 x float>, <2 x float>} @"\01-[A z]"({}* %self, i8* nocapture %_cmd) nounwind {
2624 %0 = bitcast {}* %self to i8*
2625 %1 = tail call i8* @objc_retain(i8* %0) nounwind
2626 tail call void @llvm.dbg.value(metadata !{{}* %self}, i64 0, metadata !0)
2627 tail call void @llvm.dbg.value(metadata !{{}* %self}, i64 0, metadata !0)
2628 %ivar = load i64* @"OBJC_IVAR_$_A.myZ", align 8
2629 %add.ptr = getelementptr i8* %0, i64 %ivar
2630 %tmp1 = bitcast i8* %add.ptr to float*
2631 %tmp2 = load float* %tmp1, align 4
2632 %conv = fpext float %tmp2 to double
2633 %add.ptr.sum = add i64 %ivar, 4
2634 %tmp6 = getelementptr inbounds i8* %0, i64 %add.ptr.sum
2635 %2 = bitcast i8* %tmp6 to float*
2636 %tmp7 = load float* %2, align 4
2637 %conv8 = fpext float %tmp7 to double
2638 %add.ptr.sum36 = add i64 %ivar, 8
2639 %tmp12 = getelementptr inbounds i8* %0, i64 %add.ptr.sum36
2640 %arrayidx = bitcast i8* %tmp12 to float*
2641 %tmp13 = load float* %arrayidx, align 4
2642 %conv14 = fpext float %tmp13 to double
2643 %tmp12.sum = add i64 %ivar, 12
2644 %arrayidx19 = getelementptr inbounds i8* %0, i64 %tmp12.sum
2645 %3 = bitcast i8* %arrayidx19 to float*
2646 %tmp20 = load float* %3, align 4
2647 %conv21 = fpext float %tmp20 to double
2648 %call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([33 x i8]* @.str4, i64 0, i64 0), double %conv, double %conv8, double %conv14, double %conv21)
2649 %ivar23 = load i64* @"OBJC_IVAR_$_A.myZ", align 8
2650 %add.ptr24 = getelementptr i8* %0, i64 %ivar23
2651 %4 = bitcast i8* %add.ptr24 to i128*
2652 %srcval = load i128* %4, align 4
2653 tail call void @objc_release(i8* %0) nounwind
2654 %tmp29 = trunc i128 %srcval to i64
2655 %tmp30 = bitcast i64 %tmp29 to <2 x float>
2656 %tmp31 = insertvalue {<2 x float>, <2 x float>} undef, <2 x float> %tmp30, 0
2657 %tmp32 = lshr i128 %srcval, 64
2658 %tmp33 = trunc i128 %tmp32 to i64
2659 %tmp34 = bitcast i64 %tmp33 to <2 x float>
2660 %tmp35 = insertvalue {<2 x float>, <2 x float>} %tmp31, <2 x float> %tmp34, 1
2661 ret {<2 x float>, <2 x float>} %tmp35
2664 ; CHECK: @"\01-[Top0 _getX]"
2668 define i32 @"\01-[Top0 _getX]"({}* %self, i8* nocapture %_cmd) nounwind {
2670 %0 = bitcast {}* %self to i8*
2671 %1 = tail call i8* @objc_retain(i8* %0) nounwind
2672 %puts = tail call i32 @puts(i8* getelementptr inbounds ([16 x i8]* @str, i64 0, i64 0))
2673 tail call void @objc_release(i8* %0) nounwind
2677 @"\01L_OBJC_METH_VAR_NAME_" = internal global [5 x i8] c"frob\00", section "__TEXT,__cstring,cstring_literals", align 1@"\01L_OBJC_SELECTOR_REFERENCES_" = internal global i8* getelementptr inbounds ([5 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i64 0, i64 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2678 @"\01L_OBJC_IMAGE_INFO" = internal constant [2 x i32] [i32 0, i32 16], section "__DATA, __objc_imageinfo, regular, no_dead_strip"
2679 @llvm.used = appending global [3 x i8*] [i8* getelementptr inbounds ([5 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0), i8* bitcast (i8** @"\01L_OBJC_SELECTOR_REFERENCES_" to i8*), i8* bitcast ([2 x i32]* @"\01L_OBJC_IMAGE_INFO" to i8*)], section "llvm.metadata"
2681 ; A simple loop. Eliminate the retain and release inside of it!
2683 ; CHECK: define void @loop
2686 ; CHECK: @objc_msgSend
2689 define void @loop(i8* %x, i64 %n) {
2691 %0 = tail call i8* @objc_retain(i8* %x) nounwind
2692 %cmp9 = icmp sgt i64 %n, 0
2693 br i1 %cmp9, label %for.body, label %for.end
2695 for.body: ; preds = %entry, %for.body
2696 %i.010 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
2697 %1 = tail call i8* @objc_retain(i8* %x) nounwind
2698 %tmp5 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8
2699 %call = tail call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %1, i8* %tmp5)
2700 tail call void @objc_release(i8* %1) nounwind, !clang.imprecise_release !0
2701 %inc = add nsw i64 %i.010, 1
2702 %exitcond = icmp eq i64 %inc, %n
2703 br i1 %exitcond, label %for.end, label %for.body
2705 for.end: ; preds = %for.body, %entry
2706 tail call void @objc_release(i8* %x) nounwind, !clang.imprecise_release !0
2710 ; ObjCARCOpt can delete the retain,release on self.
2712 ; CHECK: define void @TextEditTest
2713 ; CHECK-NOT: call i8* @objc_retain(i8* %tmp7)
2716 %0 = type { i8* (i8*, %struct._message_ref_t*, ...)*, i8* }
2722 %struct.NSConstantString = type { i32*, i32, i8*, i64 }
2723 %struct._NSRange = type { i64, i64 }
2724 %struct.__CFString = type opaque
2725 %struct.__method_list_t = type { i32, i32, [0 x %struct._objc_method] }
2726 %struct._class_ro_t = type { i32, i32, i32, i8*, i8*, %struct.__method_list_t*, %struct._objc_protocol_list*, %struct._ivar_list_t*, i8*, %struct._prop_list_t* }
2727 %struct._class_t = type { %struct._class_t*, %struct._class_t*, %struct._objc_cache*, i8* (i8*, i8*)**, %struct._class_ro_t* }
2728 %struct._ivar_list_t = type { i32, i32, [0 x %struct._ivar_t] }
2729 %struct._ivar_t = type { i64*, i8*, i8*, i32, i32 }
2730 %struct._message_ref_t = type { i8*, i8* }
2731 %struct._objc_cache = type opaque
2732 %struct._objc_method = type { i8*, i8*, i8* }
2733 %struct._objc_protocol_list = type { i64, [0 x %struct._protocol_t*] }
2734 %struct._prop_list_t = type { i32, i32, [0 x %struct._message_ref_t] }
2735 %struct._protocol_t = type { i8*, i8*, %struct._objc_protocol_list*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct._prop_list_t*, i32, i32 }
2737 @"\01L_OBJC_CLASSLIST_REFERENCES_$_17" = external hidden global %struct._class_t*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
2738 @kUTTypePlainText = external constant %struct.__CFString*
2739 @"\01L_OBJC_SELECTOR_REFERENCES_19" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2740 @"\01L_OBJC_SELECTOR_REFERENCES_21" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2741 @"\01L_OBJC_SELECTOR_REFERENCES_23" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2742 @"\01L_OBJC_SELECTOR_REFERENCES_25" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2743 @"\01L_OBJC_CLASSLIST_REFERENCES_$_26" = external hidden global %struct._class_t*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
2744 @"\01L_OBJC_SELECTOR_REFERENCES_28" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2745 @"\01L_OBJC_CLASSLIST_REFERENCES_$_29" = external hidden global %struct._class_t*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
2746 @"\01L_OBJC_SELECTOR_REFERENCES_31" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2747 @"\01L_OBJC_SELECTOR_REFERENCES_33" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2748 @"\01L_OBJC_SELECTOR_REFERENCES_35" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2749 @"\01L_OBJC_SELECTOR_REFERENCES_37" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2750 @"\01L_OBJC_CLASSLIST_REFERENCES_$_38" = external hidden global %struct._class_t*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
2751 @"\01L_OBJC_SELECTOR_REFERENCES_40" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2752 @"\01L_OBJC_SELECTOR_REFERENCES_42" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2753 @_unnamed_cfstring_44 = external hidden constant %struct.NSConstantString, section "__DATA,__cfstring"
2754 @"\01L_OBJC_SELECTOR_REFERENCES_46" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2755 @"\01L_OBJC_SELECTOR_REFERENCES_48" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2756 @"\01l_objc_msgSend_fixup_isEqual_" = external hidden global %0, section "__DATA, __objc_msgrefs, coalesced", align 16
2757 @"\01L_OBJC_CLASSLIST_REFERENCES_$_50" = external hidden global %struct._class_t*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
2758 @NSCocoaErrorDomain = external constant %1*
2759 @"\01L_OBJC_CLASSLIST_REFERENCES_$_51" = external hidden global %struct._class_t*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
2760 @NSFilePathErrorKey = external constant %1*
2761 @"\01L_OBJC_SELECTOR_REFERENCES_53" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2762 @"\01L_OBJC_SELECTOR_REFERENCES_55" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2763 @"\01L_OBJC_CLASSLIST_REFERENCES_$_56" = external hidden global %struct._class_t*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
2764 @"\01L_OBJC_SELECTOR_REFERENCES_58" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2765 @"\01L_OBJC_SELECTOR_REFERENCES_60" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
2767 declare %1* @truncatedString(%1*, i64)
2768 define void @TextEditTest(%2* %self, %3* %pboard) {
2770 %err = alloca %4*, align 8
2771 %tmp7 = bitcast %2* %self to i8*
2772 %tmp8 = call i8* @objc_retain(i8* %tmp7) nounwind
2773 store %4* null, %4** %err, align 8
2774 %tmp1 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_17", align 8
2775 %tmp2 = load %struct.__CFString** @kUTTypePlainText, align 8
2776 %tmp3 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_19", align 8
2777 %tmp4 = bitcast %struct._class_t* %tmp1 to i8*
2778 %call5 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp4, i8* %tmp3, %struct.__CFString* %tmp2)
2779 %tmp5 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_21", align 8
2780 %tmp6 = bitcast %3* %pboard to i8*
2781 %call76 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp6, i8* %tmp5, i8* %call5)
2782 %tmp9 = call i8* @objc_retain(i8* %call76) nounwind
2783 %tobool = icmp eq i8* %tmp9, null
2784 br i1 %tobool, label %end, label %land.lhs.true
2786 land.lhs.true: ; preds = %entry
2787 %tmp11 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_23", align 8
2788 %call137 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp6, i8* %tmp11, i8* %tmp9)
2789 %tmp = bitcast i8* %call137 to %1*
2790 %tmp10 = call i8* @objc_retain(i8* %call137) nounwind
2791 call void @objc_release(i8* null) nounwind
2792 %tmp12 = call i8* @objc_retain(i8* %call137) nounwind
2793 call void @objc_release(i8* null) nounwind
2794 %tobool16 = icmp eq i8* %call137, null
2795 br i1 %tobool16, label %end, label %if.then
2797 if.then: ; preds = %land.lhs.true
2798 %tmp19 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_25", align 8
2799 %call21 = call signext i8 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8 (i8*, i8*)*)(i8* %call137, i8* %tmp19)
2800 %tobool22 = icmp eq i8 %call21, 0
2801 br i1 %tobool22, label %if.then44, label %land.lhs.true23
2803 land.lhs.true23: ; preds = %if.then
2804 %tmp24 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_26", align 8
2805 %tmp26 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_28", align 8
2806 %tmp27 = bitcast %struct._class_t* %tmp24 to i8*
2807 %call2822 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp27, i8* %tmp26, i8* %call137)
2808 %tmp13 = bitcast i8* %call2822 to %5*
2809 %tmp14 = call i8* @objc_retain(i8* %call2822) nounwind
2810 call void @objc_release(i8* null) nounwind
2811 %tobool30 = icmp eq i8* %call2822, null
2812 br i1 %tobool30, label %if.then44, label %if.end
2814 if.end: ; preds = %land.lhs.true23
2815 %tmp32 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_29", align 8
2816 %tmp33 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_31", align 8
2817 %tmp34 = bitcast %struct._class_t* %tmp32 to i8*
2818 %call35 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp34, i8* %tmp33)
2819 %tmp37 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_33", align 8
2820 %call3923 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %call35, i8* %tmp37, i8* %call2822, i32 signext 1, %4** %err)
2821 %cmp = icmp eq i8* %call3923, null
2822 br i1 %cmp, label %if.then44, label %end
2824 if.then44: ; preds = %if.end, %land.lhs.true23, %if.then
2825 %url.025 = phi %5* [ %tmp13, %if.end ], [ %tmp13, %land.lhs.true23 ], [ null, %if.then ]
2826 %tmp49 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_35", align 8
2827 %call51 = call %struct._NSRange bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %struct._NSRange (i8*, i8*, i64, i64)*)(i8* %call137, i8* %tmp49, i64 0, i64 0)
2828 %call513 = extractvalue %struct._NSRange %call51, 0
2829 %call514 = extractvalue %struct._NSRange %call51, 1
2830 %tmp52 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_37", align 8
2831 %call548 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %call137, i8* %tmp52, i64 %call513, i64 %call514)
2832 %tmp55 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_38", align 8
2833 %tmp56 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_40", align 8
2834 %tmp57 = bitcast %struct._class_t* %tmp55 to i8*
2835 %call58 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp57, i8* %tmp56)
2836 %tmp59 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_42", align 8
2837 %call6110 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %call548, i8* %tmp59, i8* %call58)
2838 %tmp15 = call i8* @objc_retain(i8* %call6110) nounwind
2839 call void @objc_release(i8* %call137) nounwind
2840 %tmp64 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_46", align 8
2841 %call66 = call signext i8 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8 (i8*, i8*, %1*)*)(i8* %call6110, i8* %tmp64, %1* bitcast (%struct.NSConstantString* @_unnamed_cfstring_44 to %1*))
2842 %tobool67 = icmp eq i8 %call66, 0
2843 br i1 %tobool67, label %if.end74, label %if.then68
2845 if.then68: ; preds = %if.then44
2846 %tmp70 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_48", align 8
2847 %call7220 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %call6110, i8* %tmp70)
2848 %tmp16 = call i8* @objc_retain(i8* %call7220) nounwind
2849 call void @objc_release(i8* %call6110) nounwind
2852 if.end74: ; preds = %if.then68, %if.then44
2853 %filename.0.in = phi i8* [ %call7220, %if.then68 ], [ %call6110, %if.then44 ]
2854 %filename.0 = bitcast i8* %filename.0.in to %1*
2855 %tmp17 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_isEqual_" to i8**), align 16
2856 %tmp18 = bitcast i8* %tmp17 to i8 (i8*, %struct._message_ref_t*, i8*, ...)*
2857 %call78 = call signext i8 (i8*, %struct._message_ref_t*, i8*, ...)* %tmp18(i8* %call137, %struct._message_ref_t* bitcast (%0* @"\01l_objc_msgSend_fixup_isEqual_" to %struct._message_ref_t*), i8* %filename.0.in)
2858 %tobool79 = icmp eq i8 %call78, 0
2859 br i1 %tobool79, label %land.lhs.true80, label %if.then109
2861 land.lhs.true80: ; preds = %if.end74
2862 %tmp82 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_25", align 8
2863 %call84 = call signext i8 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8 (i8*, i8*)*)(i8* %filename.0.in, i8* %tmp82)
2864 %tobool86 = icmp eq i8 %call84, 0
2865 br i1 %tobool86, label %if.then109, label %if.end106
2867 if.end106: ; preds = %land.lhs.true80
2868 %tmp88 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_26", align 8
2869 %tmp90 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_28", align 8
2870 %tmp91 = bitcast %struct._class_t* %tmp88 to i8*
2871 %call9218 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp91, i8* %tmp90, i8* %filename.0.in)
2872 %tmp20 = bitcast i8* %call9218 to %5*
2873 %tmp21 = call i8* @objc_retain(i8* %call9218) nounwind
2874 %tmp22 = bitcast %5* %url.025 to i8*
2875 call void @objc_release(i8* %tmp22) nounwind
2876 %tmp94 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_29", align 8
2877 %tmp95 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_31", align 8
2878 %tmp96 = bitcast %struct._class_t* %tmp94 to i8*
2879 %call97 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp96, i8* %tmp95)
2880 %tmp99 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_33", align 8
2881 %call10119 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %call97, i8* %tmp99, i8* %call9218, i32 signext 1, %4** %err)
2882 %phitmp = icmp eq i8* %call10119, null
2883 br i1 %phitmp, label %if.then109, label %end
2885 if.then109: ; preds = %if.end106, %land.lhs.true80, %if.end74
2886 %url.129 = phi %5* [ %tmp20, %if.end106 ], [ %url.025, %if.end74 ], [ %url.025, %land.lhs.true80 ]
2887 %tmp110 = load %4** %err, align 8
2888 %tobool111 = icmp eq %4* %tmp110, null
2889 br i1 %tobool111, label %if.then112, label %if.end125
2891 if.then112: ; preds = %if.then109
2892 %tmp113 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_50", align 8
2893 %tmp114 = load %1** @NSCocoaErrorDomain, align 8
2894 %tmp115 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_51", align 8
2895 %call117 = call %1* @truncatedString(%1* %filename.0, i64 1034)
2896 %tmp118 = load %1** @NSFilePathErrorKey, align 8
2897 %tmp119 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_53", align 8
2898 %tmp120 = bitcast %struct._class_t* %tmp115 to i8*
2899 %call12113 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp120, i8* %tmp119, %1* %call117, %1* %tmp118, i8* null)
2900 %tmp122 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_55", align 8
2901 %tmp123 = bitcast %struct._class_t* %tmp113 to i8*
2902 %call12414 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp123, i8* %tmp122, %1* %tmp114, i64 258, i8* %call12113)
2903 %tmp23 = call i8* @objc_retain(i8* %call12414) nounwind
2904 %tmp25 = call i8* @objc_autorelease(i8* %tmp23) nounwind
2905 %tmp28 = bitcast i8* %tmp25 to %4*
2906 store %4* %tmp28, %4** %err, align 8
2909 if.end125: ; preds = %if.then112, %if.then109
2910 %tmp127 = phi %4* [ %tmp110, %if.then109 ], [ %tmp28, %if.then112 ]
2911 %tmp126 = load %struct._class_t** @"\01L_OBJC_CLASSLIST_REFERENCES_$_56", align 8
2912 %tmp128 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_58", align 8
2913 %tmp129 = bitcast %struct._class_t* %tmp126 to i8*
2914 %call13015 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %tmp129, i8* %tmp128, %4* %tmp127)
2915 %tmp131 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_60", align 8
2916 %call13317 = call i8* (i8*, i8*, ...)* @objc_msgSend(i8* %call13015, i8* %tmp131)
2919 end: ; preds = %if.end125, %if.end106, %if.end, %land.lhs.true, %entry
2920 %filename.2 = phi %1* [ %filename.0, %if.end106 ], [ %filename.0, %if.end125 ], [ %tmp, %land.lhs.true ], [ null, %entry ], [ %tmp, %if.end ]
2921 %origFilename.0 = phi %1* [ %tmp, %if.end106 ], [ %tmp, %if.end125 ], [ %tmp, %land.lhs.true ], [ null, %entry ], [ %tmp, %if.end ]
2922 %url.2 = phi %5* [ %tmp20, %if.end106 ], [ %url.129, %if.end125 ], [ null, %land.lhs.true ], [ null, %entry ], [ %tmp13, %if.end ]
2923 call void @objc_release(i8* %tmp9) nounwind, !clang.imprecise_release !0
2924 %tmp29 = bitcast %5* %url.2 to i8*
2925 call void @objc_release(i8* %tmp29) nounwind, !clang.imprecise_release !0
2926 %tmp30 = bitcast %1* %origFilename.0 to i8*
2927 call void @objc_release(i8* %tmp30) nounwind, !clang.imprecise_release !0
2928 %tmp31 = bitcast %1* %filename.2 to i8*
2929 call void @objc_release(i8* %tmp31) nounwind, !clang.imprecise_release !0
2930 call void @objc_release(i8* %tmp7) nounwind, !clang.imprecise_release !0
2936 declare i32 @__gxx_personality_v0(...)
2938 ; CHECK: attributes #0 = { nounwind readnone }
2939 ; CHECK: attributes [[NUW]] = { nounwind }