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: %x = call i32 @g()
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: call void @h(i32 %x)
40 ; CHECK: [[EntryCopy]]:
41 ; CHECK: call void @h(i32 %x)
44 define void @test2() personality i32 (...)* @__CxxFrameHandler3 {
47 to label %exit unwind label %cleanup
55 ; Need two copies of %exit's call to @f -- the subsequent ret is only
56 ; valid when coming from %entry, but on the path from %cleanup, this
57 ; might be a valid call to @f which might dynamically not return.
58 ; CHECK-LABEL: define void @test2(
60 ; CHECK: invoke void @f()
61 ; CHECK: to label %[[exit:[^ ]+]] unwind label %cleanup
63 ; CHECK: cleanuppad []
64 ; CHECK: call void @f()
65 ; CHECK-NEXT: unreachable
67 ; CHECK: call void @f()
68 ; CHECK-NEXT: ret void
71 define void @test3() personality i32 (...)* @__CxxFrameHandler3 {
74 to label %invoke.cont unwind label %catch
77 to label %exit unwind label %cleanup
79 catchpad [] to label %shared unwind label %endcatch
81 catchendpad unwind to caller
91 ; Need two copies of %shared's call to @f (similar to @test2 but
92 ; the two regions here are siblings, not parent-child).
93 ; CHECK-LABEL: define void @test3(
94 ; CHECK: invoke void @f()
95 ; CHECK: invoke void @f()
96 ; CHECK: to label %[[exit:[^ ]+]] unwind
99 ; CHECK-NEXT: to label %[[shared:[^ ]+]] unwind
101 ; CHECK: cleanuppad []
102 ; CHECK: call void @f()
103 ; CHECK-NEXT: unreachable
105 ; CHECK: call void @f()
106 ; CHECK-NEXT: unreachable
111 define void @test4() personality i32 (...)* @__CxxFrameHandler3 {
114 to label %shared unwind label %catch
117 to label %shared unwind label %endcatch
119 catchendpad unwind to caller
123 %zero.trip = icmp eq i32 %i, 0
124 br i1 %zero.trip, label %exit, label %loop
126 %i.loop = phi i32 [ %i, %shared ], [ %i.dec, %loop.tail ]
128 br i1 %b, label %left, label %right
136 %i.dec = sub i32 %i.loop, 1
137 %done = icmp eq i32 %i.dec, 0
138 br i1 %done, label %exit, label %loop
143 ; Make sure we can clone regions that have internal control
144 ; flow and SSA values. Here we need two copies of everything
145 ; from %shared to %exit.
146 ; CHECK-LABEL: define void @test4(
148 ; CHECK: to label %[[shared_E:[^ ]+]] unwind label %catch
150 ; CHECK: to label %[[shared_C:[^ ]+]] unwind label %endcatch
151 ; CHECK: [[shared_C]]:
152 ; CHECK: [[x_C:%[^ ]+]] = call i32 @g()
153 ; CHECK: [[i_C:%[^ ]+]] = call i32 @g()
154 ; CHECK: [[zt_C:%[^ ]+]] = icmp eq i32 [[i_C]], 0
155 ; CHECK: br i1 [[zt_C]], label %[[exit_C:[^ ]+]], label %[[loop_C:[^ ]+]]
156 ; CHECK: [[shared_E]]:
157 ; CHECK: [[x_E:%[^ ]+]] = call i32 @g()
158 ; CHECK: [[i_E:%[^ ]+]] = call i32 @g()
159 ; CHECK: [[zt_E:%[^ ]+]] = icmp eq i32 [[i_E]], 0
160 ; CHECK: br i1 [[zt_E]], label %[[exit_E:[^ ]+]], label %[[loop_E:[^ ]+]]
162 ; CHECK: [[iloop_C:%[^ ]+]] = phi i32 [ [[i_C]], %[[shared_C]] ], [ [[idec_C:%[^ ]+]], %[[looptail_C:[^ ]+]] ]
163 ; CHECK: [[b_C:%[^ ]+]] = call i1 @b()
164 ; CHECK: br i1 [[b_C]], label %[[left_C:[^ ]+]], label %[[right_C:[^ ]+]]
166 ; CHECK: [[iloop_E:%[^ ]+]] = phi i32 [ [[i_E]], %[[shared_E]] ], [ [[idec_E:%[^ ]+]], %[[looptail_E:[^ ]+]] ]
167 ; CHECK: [[b_E:%[^ ]+]] = call i1 @b()
168 ; CHECK: br i1 [[b_E]], label %[[left_E:[^ ]+]], label %[[right_E:[^ ]+]]
170 ; CHECK: [[y_C:%[^ ]+]] = call i32 @g()
171 ; CHECK: br label %[[looptail_C]]
173 ; CHECK: [[y_E:%[^ ]+]] = call i32 @g()
174 ; CHECK: br label %[[looptail_E]]
175 ; CHECK: [[right_C]]:
176 ; CHECK: call void @h(i32 [[x_C]])
177 ; CHECK: br label %[[looptail_C]]
178 ; CHECK: [[right_E]]:
179 ; CHECK: call void @h(i32 [[x_E]])
180 ; CHECK: br label %[[looptail_E]]
181 ; CHECK: [[looptail_C]]:
182 ; CHECK: [[idec_C]] = sub i32 [[iloop_C]], 1
183 ; CHECK: [[done_C:%[^ ]+]] = icmp eq i32 [[idec_C]], 0
184 ; CHECK: br i1 [[done_C]], label %[[exit_C]], label %[[loop_C]]
185 ; CHECK: [[looptail_E]]:
186 ; CHECK: [[idec_E]] = sub i32 [[iloop_E]], 1
187 ; CHECK: [[done_E:%[^ ]+]] = icmp eq i32 [[idec_E]], 0
188 ; CHECK: br i1 [[done_E]], label %[[exit_E]], label %[[loop_E]]
190 ; CHECK: call void @h(i32 [[x_C]])
193 ; CHECK: call void @h(i32 [[x_E]])
197 define void @test5() personality i32 (...)* @__CxxFrameHandler3 {
200 to label %exit unwind label %outer
205 to label %outer.ret unwind label %inner
208 to label %inner.catch unwind label %inner.endcatch
210 catchret %i to label %outer.post-inner
212 catchendpad unwind to caller
217 cleanupret %o unwind to caller
221 ; Simple nested case (catch-inside-cleanup). Nothing needs
222 ; to be cloned. The def and use of %x are both in %outer
223 ; and so don't need to be spilled.
224 ; CHECK-LABEL: define void @test5(
226 ; CHECK: %x = call i32 @g()
227 ; CHECK-NEXT: invoke void @f()
228 ; CHECK-NEXT: to label %outer.ret unwind label %inner
230 ; CHECK: to label %inner.catch unwind label %inner.endcatch
231 ; CHECK: inner.catch:
232 ; CHECK-NEXT: catchret %i to label %outer.post-inner
233 ; CHECK: outer.post-inner:
234 ; CHECK-NEXT: call void @h(i32 %x)
235 ; CHECK-NEXT: br label %outer.ret
238 define void @test6() personality i32 (...)* @__CxxFrameHandler3 {
241 to label %invoke.cont unwind label %left
244 to label %exit unwind label %right
250 to label %right.catch unwind label %right.end
254 catchendpad unwind to caller
258 to label %shared.cont unwind label %inner
264 cleanupret %i unwind label %right.end
268 ; %inner is a cleanup which appears both as a child of
269 ; %left and as a child of %right. Since statically we
270 ; need each funclet to have a single parent, we need to
271 ; clone the entire %inner funclet so we can have one
272 ; copy under each parent. The cleanupret in %inner
273 ; unwinds to the catchendpad for %right, so the copy
274 ; of %inner under %right should include it; the copy
275 ; of %inner under %left should instead have an
276 ; `unreachable` inserted there, but the copy under
277 ; %left still needs to be created because it's possible
278 ; the dynamic path enters %left, then enters %inner,
279 ; then calls @h, and that the call to @h doesn't return.
280 ; CHECK-LABEL: define void @test6(
282 ; CHECK: %x.for.left = call i32 @g()
283 ; CHECK: invoke void @f()
284 ; CHECK: to label %[[SHARED_CONT_LEFT:.+]] unwind label %[[INNER_LEFT:.+]]
287 ; CHECK: to label %right.catch unwind label %right.end
288 ; CHECK: right.catch:
289 ; CHECK: %x = call i32 @g()
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: call void @h(i32 %x)
300 ; CHECK: cleanupret [[I_R]] unwind label %right.end
301 ; CHECK: [[INNER_LEFT]]:
302 ; CHECK: [[I_L:\%.+]] = cleanuppad []
303 ; CHECK: call void @h(i32 %x.for.left)
307 define void @test7() personality i32 (...)* @__CxxFrameHandler3 {
310 to label %invoke.cont unwind label %left
313 to label %unreachable unwind label %right
316 invoke void @f() to label %unreachable unwind label %inner
319 to label %right.catch unwind label %right.end
321 invoke void @f() to label %unreachable unwind label %inner
323 catchendpad unwind to caller
328 cleanupret %i unwind label %right.end
332 ; Another case of a two-parent child (like @test6), this time
333 ; with the join at the entry itself instead of following a
335 ; CHECK-LABEL: define void @test7(
336 ; CHECK: invoke.cont:
337 ; CHECK: to label %[[UNREACHABLE_ENTRY:.+]] unwind label %right
339 ; CHECK: to label %[[UNREACHABLE_LEFT:.+]] unwind label %[[INNER_LEFT:.+]]
341 ; CHECK: to label %right.catch unwind label %right.end
342 ; CHECK: right.catch:
343 ; CHECK: to label %unreachable unwind label %[[INNER_RIGHT:.+]]
345 ; CHECK: catchendpad unwind to caller
346 ; CHECK: [[INNER_RIGHT]]:
347 ; CHECK: [[I_R:\%.+]] = cleanuppad []
348 ; CHECK: [[X_R:\%.+]] = call i32 @g()
349 ; CHECK: call void @h(i32 [[X_R]])
350 ; CHECK: cleanupret [[I_R]] unwind label %right.end
351 ; CHECK: [[INNER_LEFT]]:
352 ; CHECK: [[I_L:\%.+]] = cleanuppad []
353 ; CHECK: [[X_L:\%.+]] = call i32 @g()
354 ; CHECK: call void @h(i32 [[X_L]])
356 ; CHECK: unreachable:
358 ; CHECK: [[UNREACHABLE_LEFT]]:
360 ; CHECK: [[UNREACHABLE_ENTRY]]:
364 define void @test8() personality i32 (...)* @__CxxFrameHandler3 {
367 to label %invoke.cont unwind label %left
370 to label %unreachable unwind label %right
376 to label %right.catch unwind label %right.end
380 catchendpad unwind to caller
383 to label %unreachable unwind label %inner
387 to label %unreachable unwind label %inner.child
396 ; %inner is a two-parent child which itself has a child; need
397 ; to make two copies of both the %inner and %inner.child.
398 ; CHECK-LABEL: define void @test8(
399 ; CHECK: invoke.cont:
400 ; CHECK: to label %[[UNREACHABLE_ENTRY:.+]] unwind label %right
402 ; CHECK: to label %[[UNREACHABLE_LEFT:.+]] unwind label %[[INNER_LEFT:.+]]
404 ; CHECK: to label %right.catch unwind label %right.end
405 ; CHECK: right.catch:
406 ; CHECK: to label %[[UNREACHABLE_RIGHT:.+]] unwind label %[[INNER_RIGHT:.+]]
408 ; CHECK: catchendpad unwind to caller
409 ; CHECK: [[INNER_RIGHT]]:
410 ; CHECK: to label %[[UNREACHABLE_INNER_RIGHT:.+]] unwind label %[[INNER_CHILD_RIGHT:.+]]
411 ; CHECK: [[INNER_LEFT]]:
412 ; CHECK: to label %[[UNREACHABLE_INNER_LEFT:.+]] unwind label %[[INNER_CHILD_LEFT:.+]]
413 ; CHECK: [[INNER_CHILD_RIGHT]]:
414 ; CHECK: [[TMP:\%.+]] = cleanuppad []
415 ; CHECK: [[X:\%.+]] = call i32 @g()
416 ; CHECK: call void @h(i32 [[X]])
418 ; CHECK: [[INNER_CHILD_LEFT]]:
419 ; CHECK: [[TMP:\%.+]] = cleanuppad []
420 ; CHECK: [[X:\%.+]] = call i32 @g()
421 ; CHECK: call void @h(i32 [[X]])
423 ; CHECK: [[UNREACHABLE_INNER_RIGHT]]:
425 ; CHECK: [[UNREACHABLE_INNER_LEFT]]:
427 ; CHECK: [[UNREACHABLE_RIGHT]]:
429 ; CHECK: [[UNREACHABLE_LEFT]]:
431 ; CHECK: [[UNREACHABLE_ENTRY]]:
435 define void @test9() personality i32 (...)* @__CxxFrameHandler3 {
438 to label %invoke.cont unwind label %left
441 to label %unreachable unwind label %right
446 to label %unreachable unwind label %right
451 to label %unreachable unwind label %left
455 ; This is an irreducible loop with two funclets that enter each other;
456 ; need to make two copies of each funclet (one a child of root, the
457 ; other a child of the opposite funclet), but also make sure not to
458 ; clone self-descendants (if we tried to do that we'd need to make an
459 ; infinite number of them). Presumably if optimizations ever generated
460 ; such a thing it would mean that one of the two cleanups was originally
461 ; the parent of the other, but that we'd somehow lost track in the CFG
462 ; of which was which along the way; generating each possibility lets
463 ; whichever case was correct execute correctly.
464 ; CHECK-LABEL: define void @test9(
466 ; CHECK: to label %invoke.cont unwind label %[[LEFT:.+]]
467 ; CHECK: invoke.cont:
468 ; CHECK: to label %[[UNREACHABLE_ENTRY:.+]] unwind label %[[RIGHT:.+]]
469 ; CHECK: [[LEFT_FROM_RIGHT:.+]]:
470 ; CHECK: call void @h(i32 1)
471 ; CHECK: call void @f()
474 ; CHECK: call void @h(i32 1)
475 ; CHECK: invoke void @f()
476 ; CHECK: to label %[[UNREACHABLE_LEFT:.+]] unwind label %[[RIGHT_FROM_LEFT:.+]]
478 ; CHECK: call void @h(i32 2)
479 ; CHECK: invoke void @f()
480 ; CHECK: to label %[[UNREACHABLE_RIGHT:.+]] unwind label %[[LEFT_FROM_RIGHT]]
481 ; CHECK: [[RIGHT_FROM_LEFT]]:
482 ; CHECK: call void @h(i32 2)
483 ; CHECK: call void @f()
485 ; CHECK: [[UNREACHABLE_RIGHT]]:
487 ; CHECK: [[UNREACHABLE_LEFT]]:
489 ; CHECK: [[UNREACHABLE_ENTRY]]:
493 define void @test10() personality i32 (...)* @__CxxFrameHandler3 {
496 to label %unreachable unwind label %inner
498 %cleanup = cleanuppad []
499 ; make sure we don't overlook this cleanupret and try to process
500 ; successor %outer as a child of inner.
501 cleanupret %cleanup unwind label %outer
503 %catch = catchpad [] to label %catch.body unwind label %endpad
505 catchret %catch to label %exit
507 catchendpad unwind to caller
513 ; CHECK-LABEL: define void @test10(
516 ; CHECK-NEXT: to label %unreachable unwind label %inner
518 ; CHECK-NEXT: %cleanup = cleanuppad
519 ; CHECK-NEXT: cleanupret %cleanup unwind label %outer
521 ; CHECK-NEXT: %catch = catchpad []
522 ; CHECK-NEXT: to label %catch.body unwind label %endpad
524 ; CHECK-NEXT: catchret %catch to label %exit
526 ; CHECK-NEXT: catchendpad unwind to caller
528 ; CHECK-NEXT: ret void
530 define void @test11() personality i32 (...)* @__CxxFrameHandler3 {
533 to label %exit unwind label %cleanup.outer
535 %outer = cleanuppad []
537 to label %outer.cont unwind label %cleanup.inner
541 %inner = cleanuppad []
545 to label %unreachable unwind label %merge.end
549 cleanupendpad %outer unwind to caller
553 ; merge.end will get cloned for outer and inner, but is implausible
554 ; from inner, so the invoke @f() in inner's copy of merge should be
555 ; rewritten to call @f()
556 ; CHECK-LABEL: define void @test11()
557 ; CHECK: %inner = cleanuppad []
558 ; CHECK-NEXT: call void @f()
559 ; CHECK-NEXT: unreachable
561 define void @test12() personality i32 (...)* @__CxxFrameHandler3 !dbg !5 {
564 to label %cont unwind label %left, !dbg !8
567 to label %exit unwind label %right
575 ; This call will get cloned; make sure we can handle cloning
576 ; instructions with debug metadata attached.
577 call void @f(), !dbg !9
583 ; CHECK-LABEL: define void @test13()
585 define void @test13() personality i32 (...)* @__CxxFrameHandler3 {
594 define void @test14() personality i32 (...)* @__CxxFrameHandler3 {
597 to label %exit unwind label %catch1.pad
599 %catch1 = catchpad [i32 1]
600 to label %catch1.body unwind label %catch2.pad
602 invoke void @h(i32 1)
603 to label %catch1.body2 unwind label %catch.end
606 to label %catch1.ret unwind label %cleanup1.pad
608 %cleanup1 = cleanuppad []
610 cleanupret %cleanup1 unwind label %catch.end
612 catchret %catch1 to label %exit
614 %catch2 = catchpad [i32 2]
615 to label %catch2.body unwind label %catch.end
617 invoke void @h(i32 2)
618 to label %catch2.body2 unwind label %catch.end
621 to label %catch2.ret unwind label %cleanup2.pad
623 %cleanup2 = cleanuppad []
625 cleanupret %cleanup2 unwind label %catch.end
627 catchret %catch2 to label %exit
629 catchendpad unwind to caller
633 ; Make sure we don't clone the catchendpad even though the
634 ; cleanupendpads targeting it would naively imply that it
635 ; should get their respective parent colors (catch1 and catch2),
636 ; as well as its properly getting the root function color. The
637 ; references from the invokes ensure that if we did make clones
638 ; for each catch, they'd be reachable, as those invokes would get
640 ; CHECK-LABEL: define void @test14()
641 ; CHECK-NOT: catchendpad
642 ; CHECK: invoke void @h(i32 1)
643 ; CHECK-NEXT: unwind label %catch.end
644 ; CHECK-NOT: catchendpad
645 ; CHECK: invoke void @h(i32 2)
646 ; CHECK-NEXT: unwind label %catch.end
647 ; CHECK-NOT: catchendpad
649 ; CHECK-NEXT: catchendpad
650 ; CHECK-NOT: catchendpad
652 ;; Debug info (from test12)
654 ; Make sure the DISubprogram doesn't get cloned
655 ; CHECK-LABEL: !llvm.module.flags
656 ; CHECK-NOT: !DISubprogram
657 ; CHECK: !{{[0-9]+}} = distinct !DISubprogram(name: "test12"
658 ; CHECK-NOT: !DISubprogram
659 !llvm.module.flags = !{!0}
662 !0 = !{i32 2, !"Debug Info Version", i32 3}
663 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "compiler", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !3, subprograms: !4)
664 !2 = !DIFile(filename: "test.cpp", directory: ".")
667 !5 = distinct !DISubprogram(name: "test12", scope: !2, file: !2, type: !6, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, variables: !3)
668 !6 = !DISubroutineType(types: !7)
670 !8 = !DILocation(line: 1, scope: !5)
671 !9 = !DILocation(line: 2, scope: !5)