1 ; RUN: opt < %s -inline -S | FileCheck %s
3 ; Test that the inliner correctly handles inlining into invoke sites
4 ; by appending selectors and forwarding _Unwind_Resume directly to the
5 ; enclosing landing pad.
7 ;; Test 0 - basic functionality.
9 %struct.A = type { i8 }
11 @_ZTIi = external constant i8*
13 declare void @_ZN1AC1Ev(%struct.A*)
15 declare void @_ZN1AD1Ev(%struct.A*)
17 declare void @use(i32) nounwind
19 declare void @opaque()
21 declare i32 @llvm.eh.typeid.for(i8*) nounwind
23 declare i32 @__gxx_personality_v0(...)
25 declare i8* @__cxa_begin_catch(i8*)
27 declare void @__cxa_end_catch()
29 declare void @_ZSt9terminatev()
31 define internal void @test0_in() alwaysinline uwtable ssp {
33 %a = alloca %struct.A, align 1
34 %b = alloca %struct.A, align 1
35 call void @_ZN1AC1Ev(%struct.A* %a)
36 invoke void @_ZN1AC1Ev(%struct.A* %b)
37 to label %invoke.cont unwind label %lpad
40 invoke void @_ZN1AD1Ev(%struct.A* %b)
41 to label %invoke.cont1 unwind label %lpad
44 call void @_ZN1AD1Ev(%struct.A* %a)
48 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
50 invoke void @_ZN1AD1Ev(%struct.A* %a)
51 to label %invoke.cont2 unwind label %terminate.lpad
54 resume { i8*, i32 } %exn
57 %exn1 = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
59 call void @_ZSt9terminatev() noreturn nounwind
63 define void @test0_out() uwtable ssp {
65 invoke void @test0_in()
66 to label %ret unwind label %lpad
71 lpad: ; preds = %entry
72 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
73 catch i8* bitcast (i8** @_ZTIi to i8*)
74 %eh.exc = extractvalue { i8*, i32 } %exn, 0
75 %eh.selector = extractvalue { i8*, i32 } %exn, 1
76 %0 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind
77 %1 = icmp eq i32 %eh.selector, %0
78 br i1 %1, label %catch, label %eh.resume
81 %ignored = call i8* @__cxa_begin_catch(i8* %eh.exc) nounwind
82 call void @__cxa_end_catch() nounwind
86 resume { i8*, i32 } %exn
89 ; CHECK: define void @test0_out()
90 ; CHECK: [[A:%.*]] = alloca %struct.A,
91 ; CHECK: [[B:%.*]] = alloca %struct.A,
92 ; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A]])
93 ; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B]])
94 ; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B]])
95 ; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A]])
96 ; CHECK: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
98 ; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
99 ; CHECK-NEXT: invoke void @_ZN1AD1Ev(%struct.A* [[A]])
100 ; CHECK-NEXT: to label %[[LBL:[^\s]+]] unwind
102 ; CHECK-NEXT: br label %[[LPAD:[^\s]+]]
104 ; CHECK: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
105 ; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
106 ; CHECK-NEXT: br label %[[LPAD]]
108 ; CHECK-NEXT: phi { i8*, i32 } [
109 ; CHECK-NEXT: extractvalue { i8*, i32 }
110 ; CHECK-NEXT: extractvalue { i8*, i32 }
111 ; CHECK-NEXT: call i32 @llvm.eh.typeid.for(
114 ;; Test 1 - Correctly handle phis in outer landing pads.
116 define void @test1_out() uwtable ssp {
118 invoke void @test0_in()
119 to label %cont unwind label %lpad
122 invoke void @test0_in()
123 to label %ret unwind label %lpad
129 %x = phi i32 [ 0, %entry ], [ 1, %cont ]
130 %y = phi i32 [ 1, %entry ], [ 4, %cont ]
131 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
132 catch i8* bitcast (i8** @_ZTIi to i8*)
133 %eh.exc = extractvalue { i8*, i32 } %exn, 0
134 %eh.selector = extractvalue { i8*, i32 } %exn, 1
135 %0 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind
136 %1 = icmp eq i32 %eh.selector, %0
137 br i1 %1, label %catch, label %eh.resume
140 %ignored = call i8* @__cxa_begin_catch(i8* %eh.exc) nounwind
141 call void @use(i32 %x)
142 call void @use(i32 %y)
143 call void @__cxa_end_catch() nounwind
147 resume { i8*, i32 } %exn
150 ; CHECK: define void @test1_out()
151 ; CHECK: [[A2:%.*]] = alloca %struct.A,
152 ; CHECK: [[B2:%.*]] = alloca %struct.A,
153 ; CHECK: [[A1:%.*]] = alloca %struct.A,
154 ; CHECK: [[B1:%.*]] = alloca %struct.A,
155 ; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A1]])
156 ; CHECK-NEXT: unwind label %[[LPAD:[^\s]+]]
157 ; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B1]])
158 ; CHECK-NEXT: unwind label %[[LPAD1:[^\s]+]]
159 ; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B1]])
160 ; CHECK-NEXT: unwind label %[[LPAD1]]
161 ; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A1]])
162 ; CHECK-NEXT: unwind label %[[LPAD]]
164 ; Inner landing pad from first inlining.
166 ; CHECK-NEXT: [[LPADVAL1:%.*]] = landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
167 ; CHECK-NEXT: cleanup
168 ; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
169 ; CHECK-NEXT: invoke void @_ZN1AD1Ev(%struct.A* [[A1]])
170 ; CHECK-NEXT: to label %[[RESUME1:[^\s]+]] unwind
171 ; CHECK: [[RESUME1]]:
172 ; CHECK-NEXT: br label %[[LPAD_JOIN1:[^\s]+]]
174 ; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A2]])
175 ; CHECK-NEXT: unwind label %[[LPAD]]
176 ; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B2]])
177 ; CHECK-NEXT: unwind label %[[LPAD2:[^\s]+]]
178 ; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B2]])
179 ; CHECK-NEXT: unwind label %[[LPAD2]]
180 ; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A2]])
181 ; CHECK-NEXT: unwind label %[[LPAD]]
183 ; Inner landing pad from second inlining.
185 ; CHECK-NEXT: [[LPADVAL2:%.*]] = landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
186 ; CHECK-NEXT: cleanup
187 ; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
188 ; CHECK-NEXT: invoke void @_ZN1AD1Ev(%struct.A* [[A2]])
189 ; CHECK-NEXT: to label %[[RESUME2:[^\s]+]] unwind
190 ; CHECK: [[RESUME2]]:
191 ; CHECK-NEXT: br label %[[LPAD_JOIN2:[^\s]+]]
196 ; CHECK-NEXT: [[X:%.*]] = phi i32 [ 0, %entry ], [ 0, {{%.*}} ], [ 1, %cont ], [ 1, {{%.*}} ]
197 ; CHECK-NEXT: [[Y:%.*]] = phi i32 [ 1, %entry ], [ 1, {{%.*}} ], [ 4, %cont ], [ 4, {{%.*}} ]
198 ; CHECK-NEXT: [[LPADVAL:%.*]] = landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
199 ; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
200 ; CHECK-NEXT: br label %[[LPAD_JOIN2]]
202 ; CHECK: [[LPAD_JOIN2]]:
203 ; CHECK-NEXT: [[XJ2:%.*]] = phi i32 [ [[X]], %[[LPAD]] ], [ 1, %[[RESUME2]] ]
204 ; CHECK-NEXT: [[YJ2:%.*]] = phi i32 [ [[Y]], %[[LPAD]] ], [ 4, %[[RESUME2]] ]
205 ; CHECK-NEXT: [[EXNJ2:%.*]] = phi { i8*, i32 } [ [[LPADVAL]], %[[LPAD]] ], [ [[LPADVAL2]], %[[RESUME2]] ]
206 ; CHECK-NEXT: br label %[[LPAD_JOIN1]]
208 ; CHECK: [[LPAD_JOIN1]]:
209 ; CHECK-NEXT: [[XJ1:%.*]] = phi i32 [ [[XJ2]], %[[LPAD_JOIN2]] ], [ 0, %[[RESUME1]] ]
210 ; CHECK-NEXT: [[YJ1:%.*]] = phi i32 [ [[YJ2]], %[[LPAD_JOIN2]] ], [ 1, %[[RESUME1]] ]
211 ; CHECK-NEXT: [[EXNJ1:%.*]] = phi { i8*, i32 } [ [[EXNJ2]], %[[LPAD_JOIN2]] ], [ [[LPADVAL1]], %[[RESUME1]] ]
212 ; CHECK-NEXT: extractvalue { i8*, i32 } [[EXNJ1]], 0
213 ; CHECK-NEXT: [[SELJ1:%.*]] = extractvalue { i8*, i32 } [[EXNJ1]], 1
214 ; CHECK-NEXT: [[T:%.*]] = call i32 @llvm.eh.typeid.for(
215 ; CHECK-NEXT: icmp eq i32 [[SELJ1]], [[T]]
217 ; CHECK: call void @use(i32 [[XJ1]])
218 ; CHECK: call void @use(i32 [[YJ1]])
220 ; CHECK: resume { i8*, i32 }
223 ;; Test 2 - Don't make invalid IR for inlines into landing pads without eh.exception calls
224 define void @test2_out() uwtable ssp {
226 invoke void @test0_in()
227 to label %ret unwind label %lpad
233 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
235 call void @_ZSt9terminatev()
239 ; CHECK: define void @test2_out()
240 ; CHECK: [[A:%.*]] = alloca %struct.A,
241 ; CHECK: [[B:%.*]] = alloca %struct.A,
242 ; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A]])
243 ; CHECK-NEXT: unwind label %[[LPAD:[^\s]+]]
244 ; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B]])
245 ; CHECK-NEXT: unwind label %[[LPAD2:[^\s]+]]
246 ; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B]])
247 ; CHECK-NEXT: unwind label %[[LPAD2]]
248 ; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A]])
249 ; CHECK-NEXT: unwind label %[[LPAD]]
252 ;; Test 3 - Deal correctly with split unwind edges.
253 define void @test3_out() uwtable ssp {
255 invoke void @test0_in()
256 to label %ret unwind label %lpad
262 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
263 catch i8* bitcast (i8** @_ZTIi to i8*)
267 call void @_ZSt9terminatev()
271 ; CHECK: define void @test3_out()
272 ; CHECK: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
273 ; CHECK-NEXT: cleanup
274 ; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
275 ; CHECK-NEXT: invoke void @_ZN1AD1Ev(
276 ; CHECK-NEXT: to label %[[L:[^\s]+]] unwind
278 ; CHECK-NEXT: br label %[[JOIN:[^\s]+]]
280 ; CHECK-NEXT: phi { i8*, i32 }
281 ; CHECK-NEXT: br label %lpad.cont
283 ; CHECK-NEXT: call void @_ZSt9terminatev()
286 ;; Test 4 - Split unwind edges with a dominance problem
287 define void @test4_out() uwtable ssp {
289 invoke void @test0_in()
290 to label %cont unwind label %lpad.crit
293 invoke void @opaque()
294 to label %ret unwind label %lpad
300 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
301 catch i8* bitcast (i8** @_ZTIi to i8*)
302 call void @opaque() nounwind
306 %exn2 = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
307 catch i8* bitcast (i8** @_ZTIi to i8*)
311 %phi = phi i32 [ 0, %lpad.crit ], [ 1, %lpad ]
312 call void @use(i32 %phi)
313 call void @_ZSt9terminatev()
317 ; CHECK: define void @test4_out()
318 ; CHECK: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
319 ; CHECK-NEXT: cleanup
320 ; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
321 ; CHECK-NEXT: invoke void @_ZN1AD1Ev(
322 ; CHECK-NEXT: to label %[[L:[^\s]+]] unwind
324 ; CHECK-NEXT: br label %[[JOIN:[^\s]+]]
325 ; CHECK: invoke void @opaque()
326 ; CHECK-NEXT: unwind label %lpad
328 ; CHECK-NEXT: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
329 ; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
330 ; CHECK-NEXT: br label %[[JOIN]]
332 ; CHECK-NEXT: phi { i8*, i32 }
333 ; CHECK-NEXT: call void @opaque() nounwind
334 ; CHECK-NEXT: br label %[[FIX:[^\s]+]]
336 ; CHECK-NEXT: landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
337 ; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
338 ; CHECK-NEXT: br label %[[FIX]]
340 ; CHECK-NEXT: [[T1:%.*]] = phi i32 [ 0, %[[JOIN]] ], [ 1, %lpad ]
341 ; CHECK-NEXT: call void @use(i32 [[T1]])
342 ; CHECK-NEXT: call void @_ZSt9terminatev()