1 ; RUN: opt -mtriple=x86_x64-pc-windows-msvc -S -winehprepare < %s | FileCheck %s
3 declare i32 @__CxxFrameHandler3(...)
11 define void @test1() personality i32 (...)* @__CxxFrameHandler3 {
13 ; %x def colors: {entry} subset of use colors; must spill
16 to label %noreturn unwind label %catch
19 to label %noreturn unwind label %endcatch
21 ; %x use colors: {entry, cleanup}
25 catchendpad unwind to caller
27 ; Need two copies of the call to @h, one under entry and one under catch.
28 ; Currently we generate a load for each, though we shouldn't need one
29 ; for the use in entry's copy.
30 ; CHECK-LABEL: define void @test1(
32 ; CHECK: store i32 %x, i32* [[Slot:%[^ ]+]]
33 ; CHECK: invoke void @f()
34 ; CHECK: to label %[[EntryCopy:[^ ]+]] unwind label %catch
37 ; CHECK-NEXT: to label %[[CatchCopy:[^ ]+]] unwind
38 ; CHECK: [[CatchCopy]]:
39 ; CHECK: [[LoadX2:%[^ ]+]] = load i32, i32* [[Slot]]
40 ; CHECK: call void @h(i32 [[LoadX2]]
41 ; CHECK: [[EntryCopy]]:
42 ; CHECK: [[LoadX1:%[^ ]+]] = load i32, i32* [[Slot]]
43 ; CHECK: call void @h(i32 [[LoadX1]]
46 define void @test2() personality i32 (...)* @__CxxFrameHandler3 {
49 to label %exit unwind label %cleanup
57 ; Need two copies of %exit's call to @f -- the subsequent ret is only
58 ; valid when coming from %entry, but on the path from %cleanup, this
59 ; might be a valid call to @f which might dynamically not return.
60 ; CHECK-LABEL: define void @test2(
62 ; CHECK: invoke void @f()
63 ; CHECK: to label %[[exit:[^ ]+]] unwind label %cleanup
65 ; CHECK: cleanuppad []
66 ; CHECK: call void @f()
67 ; CHECK-NEXT: unreachable
69 ; CHECK: call void @f()
70 ; CHECK-NEXT: ret void
73 define void @test3() personality i32 (...)* @__CxxFrameHandler3 {
76 to label %invoke.cont unwind label %catch
79 to label %exit unwind label %cleanup
81 catchpad [] to label %shared unwind label %endcatch
83 catchendpad unwind to caller
93 ; Need two copies of %shared's call to @f (similar to @test2 but
94 ; the two regions here are siblings, not parent-child).
95 ; CHECK-LABEL: define void @test3(
96 ; CHECK: invoke void @f()
97 ; CHECK: invoke void @f()
98 ; CHECK: to label %[[exit:[^ ]+]] unwind
101 ; CHECK-NEXT: to label %[[shared:[^ ]+]] unwind
103 ; CHECK: cleanuppad []
104 ; CHECK: call void @f()
105 ; CHECK-NEXT: unreachable
107 ; CHECK: call void @f()
108 ; CHECK-NEXT: unreachable
113 define void @test4() personality i32 (...)* @__CxxFrameHandler3 {
116 to label %shared unwind label %catch
119 to label %shared unwind label %endcatch
121 catchendpad unwind to caller
125 %zero.trip = icmp eq i32 %i, 0
126 br i1 %zero.trip, label %exit, label %loop
128 %i.loop = phi i32 [ %i, %shared ], [ %i.dec, %loop.tail ]
130 br i1 %b, label %left, label %right
138 %i.dec = sub i32 %i.loop, 1
139 %done = icmp eq i32 %i.dec, 0
140 br i1 %done, label %exit, label %loop
145 ; Make sure we can clone regions that have internal control
146 ; flow and SSA values. Here we need two copies of everything
147 ; from %shared to %exit.
148 ; CHECK-LABEL: define void @test4(
150 ; CHECK: to label %[[shared_E:[^ ]+]] unwind label %catch
152 ; CHECK: to label %[[shared_C:[^ ]+]] unwind label %endcatch
153 ; CHECK: [[shared_C]]:
154 ; CHECK: [[x_C:%[^ ]+]] = call i32 @g()
155 ; CHECK: [[i_C:%[^ ]+]] = call i32 @g()
156 ; CHECK: [[zt_C:%[^ ]+]] = icmp eq i32 [[i_C]], 0
157 ; CHECK: br i1 [[zt_C]], label %[[exit_C:[^ ]+]], label %[[loop_C:[^ ]+]]
158 ; CHECK: [[shared_E]]:
159 ; CHECK: [[x_E:%[^ ]+]] = call i32 @g()
160 ; CHECK: [[i_E:%[^ ]+]] = call i32 @g()
161 ; CHECK: [[zt_E:%[^ ]+]] = icmp eq i32 [[i_E]], 0
162 ; CHECK: br i1 [[zt_E]], label %[[exit_E:[^ ]+]], label %[[loop_E:[^ ]+]]
164 ; CHECK: [[iloop_C:%[^ ]+]] = phi i32 [ [[i_C]], %[[shared_C]] ], [ [[idec_C:%[^ ]+]], %[[looptail_C:[^ ]+]] ]
165 ; CHECK: [[b_C:%[^ ]+]] = call i1 @b()
166 ; CHECK: br i1 [[b_C]], label %[[left_C:[^ ]+]], label %[[right_C:[^ ]+]]
168 ; CHECK: [[iloop_E:%[^ ]+]] = phi i32 [ [[i_E]], %[[shared_E]] ], [ [[idec_E:%[^ ]+]], %[[looptail_E:[^ ]+]] ]
169 ; CHECK: [[b_E:%[^ ]+]] = call i1 @b()
170 ; CHECK: br i1 [[b_E]], label %[[left_E:[^ ]+]], label %[[right_E:[^ ]+]]
172 ; CHECK: [[y_C:%[^ ]+]] = call i32 @g()
173 ; CHECK: br label %[[looptail_C]]
175 ; CHECK: [[y_E:%[^ ]+]] = call i32 @g()
176 ; CHECK: br label %[[looptail_E]]
177 ; CHECK: [[right_C]]:
178 ; CHECK: call void @h(i32 [[x_C]])
179 ; CHECK: br label %[[looptail_C]]
180 ; CHECK: [[right_E]]:
181 ; CHECK: call void @h(i32 [[x_E]])
182 ; CHECK: br label %[[looptail_E]]
183 ; CHECK: [[looptail_C]]:
184 ; CHECK: [[idec_C]] = sub i32 [[iloop_C]], 1
185 ; CHECK: [[done_C:%[^ ]+]] = icmp eq i32 [[idec_C]], 0
186 ; CHECK: br i1 [[done_C]], label %[[exit_C]], label %[[loop_C]]
187 ; CHECK: [[looptail_E]]:
188 ; CHECK: [[idec_E]] = sub i32 [[iloop_E]], 1
189 ; CHECK: [[done_E:%[^ ]+]] = icmp eq i32 [[idec_E]], 0
190 ; CHECK: br i1 [[done_E]], label %[[exit_E]], label %[[loop_E]]
192 ; CHECK: call void @h(i32 [[x_C]])
195 ; CHECK: call void @h(i32 [[x_E]])
199 define void @test5() personality i32 (...)* @__CxxFrameHandler3 {
202 to label %exit unwind label %outer
207 to label %outer.ret unwind label %inner
210 to label %inner.catch unwind label %inner.endcatch
212 catchret %i to label %outer.post-inner
214 catchendpad unwind to caller
219 cleanupret %o unwind to caller
223 ; Simple nested case (catch-inside-cleanup). Nothing needs
224 ; to be cloned. The def and use of %x are both in %outer
225 ; and so don't need to be spilled.
226 ; CHECK-LABEL: define void @test5(
228 ; CHECK: %x = call i32 @g()
229 ; CHECK-NEXT: invoke void @f()
230 ; CHECK-NEXT: to label %outer.ret unwind label %inner
232 ; CHECK: to label %inner.catch unwind label %inner.endcatch
233 ; CHECK: inner.catch:
234 ; CHECK-NEXT: catchret %i to label %outer.post-inner
235 ; CHECK: outer.post-inner:
236 ; CHECK-NEXT: call void @h(i32 %x)
237 ; CHECK-NEXT: br label %outer.ret
240 define void @test6() personality i32 (...)* @__CxxFrameHandler3 {
243 to label %invoke.cont unwind label %left
246 to label %exit unwind label %right
252 to label %right.catch unwind label %right.end
256 catchendpad unwind to caller
260 to label %shared.cont unwind label %inner
266 cleanupret %i unwind label %right.end
270 ; %inner is a cleanup which appears both as a child of
271 ; %left and as a child of %right. Since statically we
272 ; need each funclet to have a single parent, we need to
273 ; clone the entire %inner funclet so we can have one
274 ; copy under each parent. The cleanupret in %inner
275 ; unwinds to the catchendpad for %right, so the copy
276 ; of %inner under %right should include it; the copy
277 ; of %inner under %left should instead have an
278 ; `unreachable` inserted there, but the copy under
279 ; %left still needs to be created because it's possible
280 ; the dynamic path enters %left, then enters %inner,
281 ; then calls @h, and that the call to @h doesn't return.
282 ; CHECK-LABEL: define void @test6(
284 ; CHECK: to label %[[SHARED_CONT_LEFT:.+]] unwind label %[[INNER_LEFT:.+]]
286 ; CHECK: to label %right.catch unwind label %right.end
287 ; CHECK: right.catch:
288 ; CHECK: %x = call i32 @g()
289 ; CHECK: store i32 %x, i32* %x.wineh.spillslot
290 ; CHECK: to label %shared.cont unwind label %[[INNER_RIGHT:.+]]
292 ; CHECK: catchendpad unwind to caller
293 ; CHECK: shared.cont:
295 ; CHECK: [[SHARED_CONT_LEFT]]:
297 ; CHECK: [[INNER_RIGHT]]:
298 ; CHECK: [[I_R:\%.+]] = cleanuppad []
299 ; CHECK: [[X_RELOAD_R:\%.+]] = load i32, i32* %x.wineh.spillslot
300 ; CHECK: call void @h(i32 [[X_RELOAD_R]])
301 ; CHECK: cleanupret [[I_R]] unwind label %right.end
302 ; CHECK: [[INNER_LEFT]]:
303 ; CHECK: [[I_L:\%.+]] = cleanuppad []
304 ; CHECK: [[X_RELOAD_L:\%.+]] = load i32, i32* %x.wineh.spillslot
305 ; CHECK: call void @h(i32 [[X_RELOAD_L]])
309 define void @test7() personality i32 (...)* @__CxxFrameHandler3 {
312 to label %invoke.cont unwind label %left
315 to label %unreachable unwind label %right
318 invoke void @f() to label %unreachable unwind label %inner
321 to label %right.catch unwind label %right.end
323 invoke void @f() to label %unreachable unwind label %inner
325 catchendpad unwind to caller
330 cleanupret %i unwind label %right.end
334 ; Another case of a two-parent child (like @test6), this time
335 ; with the join at the entry itself instead of following a
337 ; CHECK-LABEL: define void @test7(
338 ; CHECK: invoke.cont:
339 ; CHECK: to label %[[UNREACHABLE_ENTRY:.+]] unwind label %right
341 ; CHECK: to label %[[UNREACHABLE_LEFT:.+]] unwind label %[[INNER_LEFT:.+]]
343 ; CHECK: to label %right.catch unwind label %right.end
344 ; CHECK: right.catch:
345 ; CHECK: to label %unreachable unwind label %[[INNER_RIGHT:.+]]
347 ; CHECK: catchendpad unwind to caller
348 ; CHECK: [[INNER_RIGHT]]:
349 ; CHECK: [[I_R:\%.+]] = cleanuppad []
350 ; CHECK: [[X_R:\%.+]] = call i32 @g()
351 ; CHECK: call void @h(i32 [[X_R]])
352 ; CHECK: cleanupret [[I_R]] unwind label %right.end
353 ; CHECK: [[INNER_LEFT]]:
354 ; CHECK: [[I_L:\%.+]] = cleanuppad []
355 ; CHECK: [[X_L:\%.+]] = call i32 @g()
356 ; CHECK: call void @h(i32 [[X_L]])
358 ; CHECK: unreachable:
360 ; CHECK: [[UNREACHABLE_LEFT]]:
362 ; CHECK: [[UNREACHABLE_ENTRY]]:
366 define void @test8() personality i32 (...)* @__CxxFrameHandler3 {
369 to label %invoke.cont unwind label %left
372 to label %unreachable unwind label %right
378 to label %right.catch unwind label %right.end
382 catchendpad unwind to caller
385 to label %unreachable unwind label %inner
389 to label %unreachable unwind label %inner.child
398 ; %inner is a two-parent child which itself has a child; need
399 ; to make two copies of both the %inner and %inner.child.
400 ; CHECK-LABEL: define void @test8(
401 ; CHECK: invoke.cont:
402 ; CHECK: to label %[[UNREACHABLE_ENTRY:.+]] unwind label %right
404 ; CHECK: to label %[[UNREACHABLE_LEFT:.+]] unwind label %[[INNER_LEFT:.+]]
406 ; CHECK: to label %right.catch unwind label %right.end
407 ; CHECK: right.catch:
408 ; CHECK: to label %[[UNREACHABLE_RIGHT:.+]] unwind label %[[INNER_RIGHT:.+]]
410 ; CHECK: catchendpad unwind to caller
411 ; CHECK: [[INNER_RIGHT]]:
412 ; CHECK: to label %[[UNREACHABLE_INNER_RIGHT:.+]] unwind label %[[INNER_CHILD_RIGHT:.+]]
413 ; CHECK: [[INNER_LEFT]]:
414 ; CHECK: to label %[[UNREACHABLE_INNER_LEFT:.+]] unwind label %[[INNER_CHILD_LEFT:.+]]
415 ; CHECK: [[INNER_CHILD_RIGHT]]:
416 ; CHECK: [[TMP:\%.+]] = cleanuppad []
417 ; CHECK: [[X:\%.+]] = call i32 @g()
418 ; CHECK: call void @h(i32 [[X]])
420 ; CHECK: [[INNER_CHILD_LEFT]]:
421 ; CHECK: [[TMP:\%.+]] = cleanuppad []
422 ; CHECK: [[X:\%.+]] = call i32 @g()
423 ; CHECK: call void @h(i32 [[X]])
425 ; CHECK: [[UNREACHABLE_INNER_RIGHT]]:
427 ; CHECK: [[UNREACHABLE_INNER_LEFT]]:
429 ; CHECK: [[UNREACHABLE_RIGHT]]:
431 ; CHECK: [[UNREACHABLE_LEFT]]:
433 ; CHECK: [[UNREACHABLE_ENTRY]]:
437 define void @test9() personality i32 (...)* @__CxxFrameHandler3 {
440 to label %invoke.cont unwind label %left
443 to label %unreachable unwind label %right
448 to label %unreachable unwind label %right
453 to label %unreachable unwind label %left
457 ; This is an irreducible loop with two funclets that enter each other;
458 ; need to make two copies of each funclet (one a child of root, the
459 ; other a child of the opposite funclet), but also make sure not to
460 ; clone self-descendants (if we tried to do that we'd need to make an
461 ; infinite number of them). Presumably if optimizations ever generated
462 ; such a thing it would mean that one of the two cleanups was originally
463 ; the parent of the other, but that we'd somehow lost track in the CFG
464 ; of which was which along the way; generating each possibility lets
465 ; whichever case was correct execute correctly.
466 ; CHECK-LABEL: define void @test9(
468 ; CHECK: to label %invoke.cont unwind label %[[LEFT:.+]]
469 ; CHECK: invoke.cont:
470 ; CHECK: to label %[[UNREACHABLE_ENTRY:.+]] unwind label %[[RIGHT:.+]]
471 ; CHECK: [[LEFT_FROM_RIGHT:.+]]:
472 ; CHECK: call void @h(i32 1)
473 ; CHECK: call void @f()
476 ; CHECK: call void @h(i32 1)
477 ; CHECK: invoke void @f()
478 ; CHECK: to label %[[UNREACHABLE_LEFT:.+]] unwind label %[[RIGHT_FROM_LEFT:.+]]
480 ; CHECK: call void @h(i32 2)
481 ; CHECK: invoke void @f()
482 ; CHECK: to label %[[UNREACHABLE_RIGHT:.+]] unwind label %[[LEFT_FROM_RIGHT]]
483 ; CHECK: [[RIGHT_FROM_LEFT]]:
484 ; CHECK: call void @h(i32 2)
485 ; CHECK: call void @f()
487 ; CHECK: [[UNREACHABLE_RIGHT]]:
489 ; CHECK: [[UNREACHABLE_LEFT]]:
491 ; CHECK: [[UNREACHABLE_ENTRY]]:
495 define void @test10() personality i32 (...)* @__CxxFrameHandler3 {
498 to label %unreachable unwind label %inner
500 %cleanup = cleanuppad []
501 ; make sure we don't overlook this cleanupret and try to process
502 ; successor %outer as a child of inner.
503 cleanupret %cleanup unwind label %outer
505 %catch = catchpad [] to label %catch.body unwind label %endpad
507 catchret %catch to label %exit
509 catchendpad unwind to caller
515 ; CHECK-LABEL: define void @test10(
518 ; CHECK-NEXT: to label %unreachable unwind label %inner
520 ; CHECK-NEXT: %cleanup = cleanuppad
521 ; CHECK-NEXT: cleanupret %cleanup unwind label %outer
523 ; CHECK-NEXT: %catch = catchpad []
524 ; CHECK-NEXT: to label %catch.body unwind label %endpad
526 ; CHECK-NEXT: catchret %catch to label %exit
528 ; CHECK-NEXT: catchendpad unwind to caller
530 ; CHECK-NEXT: ret void
532 define void @test11() personality i32 (...)* @__CxxFrameHandler3 {
535 to label %exit unwind label %cleanup.outer
537 %outer = cleanuppad []
539 to label %outer.cont unwind label %cleanup.inner
543 %inner = cleanuppad []
547 to label %unreachable unwind label %merge.end
551 cleanupendpad %outer unwind to caller
555 ; merge.end will get cloned for outer and inner, but is implausible
556 ; from inner, so the invoke @f() in inner's copy of merge should be
557 ; rewritten to call @f()
558 ; CHECK-LABEL: define void @test11()
559 ; CHECK: %inner = cleanuppad []
560 ; CHECK-NEXT: call void @f()
561 ; CHECK-NEXT: unreachable
563 define void @test12() personality i32 (...)* @__CxxFrameHandler3 !dbg !5 {
566 to label %cont unwind label %left, !dbg !8
569 to label %exit unwind label %right
577 ; This call will get cloned; make sure we can handle cloning
578 ; instructions with debug metadata attached.
579 call void @f(), !dbg !9
585 ; CHECK-LABEL: define void @test13()
587 define void @test13() personality i32 (...)* @__CxxFrameHandler3 {
596 define void @test14() personality i32 (...)* @__CxxFrameHandler3 {
599 to label %exit unwind label %catch1.pad
601 %catch1 = catchpad [i32 1]
602 to label %catch1.body unwind label %catch2.pad
604 invoke void @h(i32 1)
605 to label %catch1.body2 unwind label %catch.end
608 to label %catch1.ret unwind label %cleanup1.pad
610 %cleanup1 = cleanuppad []
612 cleanupret %cleanup1 unwind label %catch.end
614 catchret %catch1 to label %exit
616 %catch2 = catchpad [i32 2]
617 to label %catch2.body unwind label %catch.end
619 invoke void @h(i32 2)
620 to label %catch2.body2 unwind label %catch.end
623 to label %catch2.ret unwind label %cleanup2.pad
625 %cleanup2 = cleanuppad []
627 cleanupret %cleanup2 unwind label %catch.end
629 catchret %catch2 to label %exit
631 catchendpad unwind to caller
635 ; Make sure we don't clone the catchendpad even though the
636 ; cleanupendpads targeting it would naively imply that it
637 ; should get their respective parent colors (catch1 and catch2),
638 ; as well as its properly getting the root function color. The
639 ; references from the invokes ensure that if we did make clones
640 ; for each catch, they'd be reachable, as those invokes would get
642 ; CHECK-LABEL: define void @test14()
643 ; CHECK-NOT: catchendpad
644 ; CHECK: invoke void @h(i32 1)
645 ; CHECK-NEXT: unwind label %catch.end
646 ; CHECK-NOT: catchendpad
647 ; CHECK: invoke void @h(i32 2)
648 ; CHECK-NEXT: unwind label %catch.end
649 ; CHECK-NOT: catchendpad
651 ; CHECK-NEXT: catchendpad
652 ; CHECK-NOT: catchendpad
654 ;; Debug info (from test12)
656 ; Make sure the DISubprogram doesn't get cloned
657 ; CHECK-LABEL: !llvm.module.flags
658 ; CHECK-NOT: !DISubprogram
659 ; CHECK: !{{[0-9]+}} = distinct !DISubprogram(name: "test12"
660 ; CHECK-NOT: !DISubprogram
661 !llvm.module.flags = !{!0}
664 !0 = !{i32 2, !"Debug Info Version", i32 3}
665 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "compiler", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !3, subprograms: !4)
666 !2 = !DIFile(filename: "test.cpp", directory: ".")
669 !5 = distinct !DISubprogram(name: "test12", scope: !2, file: !2, type: !6, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, variables: !3)
670 !6 = !DISubroutineType(types: !7)
672 !8 = !DILocation(line: 1, scope: !5)
673 !9 = !DILocation(line: 2, scope: !5)