1 ; RUN: opt -mtriple=x86_64-pc-windows-msvc -S -winehprepare < %s | FileCheck %s
3 declare i32 @__CxxFrameHandler3(...)
4 declare i32 @__C_specific_handler(...)
12 define void @test1() personality i32 (...)* @__CxxFrameHandler3 {
14 ; %x def colors: {entry} subset of use colors; must spill
17 to label %noreturn unwind label %catch.switch
19 %cs = catchswitch within none [label %catch] unwind to caller
21 catchpad within %cs []
24 ; %x use colors: {entry, cleanup}
28 ; Need two copies of the call to @h, one under entry and one under catch.
29 ; Currently we generate a load for each, though we shouldn't need one
30 ; for the use in entry's copy.
31 ; CHECK-LABEL: define void @test1(
33 ; CHECK: %x = call i32 @g()
34 ; CHECK: invoke void @f()
35 ; CHECK: to label %[[EntryCopy:[^ ]+]] unwind label %catch
36 ; CHECK: catch.switch:
37 ; CHECK: %cs = catchswitch within none [label %catch] unwind to caller
39 ; CHECK: catchpad within %cs []
40 ; CHECK-NEXT: call void @h(i32 %x)
41 ; CHECK: [[EntryCopy]]:
42 ; CHECK: call void @h(i32 %x)
45 define void @test2() personality i32 (...)* @__CxxFrameHandler3 {
48 to label %exit unwind label %cleanup
50 cleanuppad within none []
56 ; Need two copies of %exit's call to @f -- the subsequent ret is only
57 ; valid when coming from %entry, but on the path from %cleanup, this
58 ; might be a valid call to @f which might dynamically not return.
59 ; CHECK-LABEL: define void @test2(
61 ; CHECK: invoke void @f()
62 ; CHECK: to label %[[exit:[^ ]+]] unwind label %cleanup
64 ; CHECK: cleanuppad within none []
65 ; CHECK: call void @f()
66 ; CHECK-NEXT: unreachable
68 ; CHECK: call void @f()
69 ; CHECK-NEXT: ret void
72 define void @test3() personality i32 (...)* @__CxxFrameHandler3 {
75 to label %invoke.cont unwind label %catch.switch
78 to label %exit unwind label %cleanup
80 %cs = catchswitch within none [label %catch] unwind to caller
82 catchpad within %cs []
85 cleanuppad within none []
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
100 ; CHECK: catchpad within %cs []
101 ; CHECK-NEXT: call void @f()
102 ; CHECK-NEXT: unreachable
104 ; CHECK: cleanuppad within none []
105 ; CHECK: call void @f()
106 ; CHECK-NEXT: unreachable
111 define void @test4() personality i32 (...)* @__CxxFrameHandler3 {
114 to label %shared unwind label %catch.switch
116 %cs = catchswitch within none [label %catch] unwind to caller
118 catchpad within %cs []
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.switch
150 ; CHECK: catchpad within %cs []
151 ; CHECK: [[x_C:%[^ ]+]] = call i32 @g()
152 ; CHECK: [[i_C:%[^ ]+]] = call i32 @g()
153 ; CHECK: [[zt_C:%[^ ]+]] = icmp eq i32 [[i_C]], 0
154 ; CHECK: br i1 [[zt_C]], label %[[exit_C:[^ ]+]], label %[[loop_C:[^ ]+]]
155 ; CHECK: [[shared_E]]:
156 ; CHECK: [[x_E:%[^ ]+]] = call i32 @g()
157 ; CHECK: [[i_E:%[^ ]+]] = call i32 @g()
158 ; CHECK: [[zt_E:%[^ ]+]] = icmp eq i32 [[i_E]], 0
159 ; CHECK: br i1 [[zt_E]], label %[[exit_E:[^ ]+]], label %[[loop_E:[^ ]+]]
161 ; CHECK: [[iloop_C:%[^ ]+]] = phi i32 [ [[i_C]], %catch ], [ [[idec_C:%[^ ]+]], %[[looptail_C:[^ ]+]] ]
162 ; CHECK: [[b_C:%[^ ]+]] = call i1 @b()
163 ; CHECK: br i1 [[b_C]], label %[[left_C:[^ ]+]], label %[[right_C:[^ ]+]]
165 ; CHECK: [[iloop_E:%[^ ]+]] = phi i32 [ [[i_E]], %[[shared_E]] ], [ [[idec_E:%[^ ]+]], %[[looptail_E:[^ ]+]] ]
166 ; CHECK: [[b_E:%[^ ]+]] = call i1 @b()
167 ; CHECK: br i1 [[b_E]], label %[[left_E:[^ ]+]], label %[[right_E:[^ ]+]]
169 ; CHECK: [[y_C:%[^ ]+]] = call i32 @g()
170 ; CHECK: br label %[[looptail_C]]
172 ; CHECK: [[y_E:%[^ ]+]] = call i32 @g()
173 ; CHECK: br label %[[looptail_E]]
174 ; CHECK: [[right_C]]:
175 ; CHECK: call void @h(i32 [[x_C]])
176 ; CHECK: br label %[[looptail_C]]
177 ; CHECK: [[right_E]]:
178 ; CHECK: call void @h(i32 [[x_E]])
179 ; CHECK: br label %[[looptail_E]]
180 ; CHECK: [[looptail_C]]:
181 ; CHECK: [[idec_C]] = sub i32 [[iloop_C]], 1
182 ; CHECK: [[done_C:%[^ ]+]] = icmp eq i32 [[idec_C]], 0
183 ; CHECK: br i1 [[done_C]], label %[[exit_C]], label %[[loop_C]]
184 ; CHECK: [[looptail_E]]:
185 ; CHECK: [[idec_E]] = sub i32 [[iloop_E]], 1
186 ; CHECK: [[done_E:%[^ ]+]] = icmp eq i32 [[idec_E]], 0
187 ; CHECK: br i1 [[done_E]], label %[[exit_E]], label %[[loop_E]]
189 ; CHECK: call void @h(i32 [[x_C]])
192 ; CHECK: call void @h(i32 [[x_E]])
196 define void @test5() personality i32 (...)* @__C_specific_handler {
199 to label %exit unwind label %outer
201 %o = cleanuppad within none []
204 to label %outer.ret unwind label %catch.switch
206 %cs = catchswitch within %o [label %inner] unwind to caller
208 %i = catchpad within %cs []
209 catchret from %i to label %outer.post-inner
214 cleanupret from %o unwind to caller
218 ; Simple nested case (catch-inside-cleanup). Nothing needs
219 ; to be cloned. The def and use of %x are both in %outer
220 ; and so don't need to be spilled.
221 ; CHECK-LABEL: define void @test5(
223 ; CHECK: %x = call i32 @g()
224 ; CHECK-NEXT: invoke void @f()
225 ; CHECK-NEXT: to label %outer.ret unwind label %catch.switch
227 ; CHECK-NEXT: %i = catchpad within %cs []
228 ; CHECK-NEXT: catchret from %i to label %outer.post-inner
229 ; CHECK: outer.post-inner:
230 ; CHECK-NEXT: call void @h(i32 %x)
231 ; CHECK-NEXT: br label %outer.ret
234 define void @test6() personality i32 (...)* @__C_specific_handler {
237 to label %invoke.cont unwind label %left
240 to label %exit unwind label %right
242 cleanuppad within none []
245 %cs = catchswitch within none [label %right.catch] unwind to caller
247 catchpad within %cs []
252 to label %shared.cont unwind label %inner
256 %i = cleanuppad within none []
258 cleanupret from %i unwind to caller
262 ; CHECK-LABEL: define void @test6(
264 ; CHECK: %x.for.left = call i32 @g()
265 ; CHECK: invoke void @f()
266 ; CHECK: to label %shared.cont.for.left unwind label %inner
267 ; CHECK: right.catch:
269 ; CHECK: %x = call i32 @g()
270 ; CHECK: to label %shared.cont unwind label %inner
271 ; CHECK: shared.cont:
273 ; CHECK: shared.cont.for.left:
276 ; CHECK: %i = cleanuppad within none []
277 ; CHECK: call void @h(i32 %x1.wineh.reload)
278 ; CHECK: cleanupret from %i unwind to caller
281 define void @test9() personality i32 (...)* @__C_specific_handler {
284 to label %invoke.cont unwind label %left
287 to label %unreachable unwind label %right
289 cleanuppad within none []
292 to label %unreachable unwind label %right
294 cleanuppad within none []
297 to label %unreachable unwind label %left
301 ; This is an irreducible loop with two funclets that enter each other.
302 ; CHECK-LABEL: define void @test9(
304 ; CHECK: to label %invoke.cont unwind label %[[LEFT:.+]]
305 ; CHECK: invoke.cont:
306 ; CHECK: to label %[[UNREACHABLE_ENTRY:.+]] unwind label %[[RIGHT:.+]]
308 ; CHECK: call void @h(i32 1)
309 ; CHECK: invoke void @f()
310 ; CHECK: to label %[[UNREACHABLE_LEFT:.+]] unwind label %[[RIGHT]]
312 ; CHECK: call void @h(i32 2)
313 ; CHECK: invoke void @f()
314 ; CHECK: to label %[[UNREACHABLE_RIGHT:.+]] unwind label %[[LEFT]]
315 ; CHECK: [[UNREACHABLE_RIGHT]]:
317 ; CHECK: [[UNREACHABLE_LEFT]]:
319 ; CHECK: [[UNREACHABLE_ENTRY]]:
323 define void @test10() personality i32 (...)* @__CxxFrameHandler3 {
326 to label %unreachable unwind label %inner
328 %cleanup = cleanuppad within none []
329 ; make sure we don't overlook this cleanupret and try to process
330 ; successor %outer as a child of inner.
331 cleanupret from %cleanup unwind label %outer
333 %cs = catchswitch within none [label %catch.body] unwind to caller
336 %catch = catchpad within %cs []
337 catchret from %catch to label %exit
343 ; CHECK-LABEL: define void @test10(
346 ; CHECK-NEXT: to label %unreachable unwind label %inner
348 ; CHECK-NEXT: %cleanup = cleanuppad within none []
349 ; CHECK-NEXT: cleanupret from %cleanup unwind label %outer
351 ; CHECK-NEXT: %cs = catchswitch within none [label %catch.body] unwind to caller
353 ; CHECK-NEXT: %catch = catchpad within %cs []
354 ; CHECK-NEXT: catchret from %catch to label %exit
356 ; CHECK-NEXT: ret void
358 define void @test11() personality i32 (...)* @__C_specific_handler {
361 to label %exit unwind label %cleanup.outer
363 %outer = cleanuppad within none []
365 to label %outer.cont unwind label %cleanup.inner
369 %inner = cleanuppad within %outer []
377 ; merge.end will get cloned for outer and inner, but is implausible
378 ; from inner, so the call @f() in inner's copy of merge should be
379 ; rewritten to call @f()
380 ; CHECK-LABEL: define void @test11()
381 ; CHECK: %inner = cleanuppad within %outer []
382 ; CHECK-NEXT: call void @f()
383 ; CHECK-NEXT: unreachable
385 define void @test12() personality i32 (...)* @__CxxFrameHandler3 !dbg !5 {
388 to label %cont unwind label %left, !dbg !8
391 to label %exit unwind label %right
393 cleanuppad within none []
396 cleanuppad within none []
399 ; This call will get cloned; make sure we can handle cloning
400 ; instructions with debug metadata attached.
401 call void @f(), !dbg !9
407 ; CHECK-LABEL: define void @test13()
409 define void @test13() personality i32 (...)* @__CxxFrameHandler3 {
414 cleanuppad within none []
418 ;; Debug info (from test12)
420 ; Make sure the DISubprogram doesn't get cloned
421 ; CHECK-LABEL: !llvm.module.flags
422 ; CHECK-NOT: !DISubprogram
423 ; CHECK: !{{[0-9]+}} = distinct !DISubprogram(name: "test12"
424 ; CHECK-NOT: !DISubprogram
425 !llvm.module.flags = !{!0}
428 !0 = !{i32 2, !"Debug Info Version", i32 3}
429 !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "compiler", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !3, subprograms: !4)
430 !2 = !DIFile(filename: "test.cpp", directory: ".")
433 !5 = distinct !DISubprogram(name: "test12", scope: !2, file: !2, type: !6, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, variables: !3)
434 !6 = !DISubroutineType(types: !7)
436 !8 = !DILocation(line: 1, scope: !5)
437 !9 = !DILocation(line: 2, scope: !5)