1 ; RUN: opt < %s -inline -S | FileCheck %s 2 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. 6 7 ;; Test 0 - basic functionality. 8 9 %struct.A = type { i8 } 10 11 @_ZTIi = external constant i8* 12 13 declare void @_ZN1AC1Ev(%struct.A*) 14 15 declare void @_ZN1AD1Ev(%struct.A*) 16 17 declare void @use(i32) nounwind 18 19 declare void @opaque() 20 21 declare i32 @llvm.eh.typeid.for(i8*) nounwind 22 23 declare i32 @__gxx_personality_v0(...) 24 25 declare i8* @__cxa_begin_catch(i8*) 26 27 declare void @__cxa_end_catch() 28 29 declare void @_ZSt9terminatev() 30 31 define internal void @test0_in() alwaysinline uwtable ssp { 32 entry: 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 38 39 invoke.cont: 40 invoke void @_ZN1AD1Ev(%struct.A* %b) 41 to label %invoke.cont1 unwind label %lpad 42 43 invoke.cont1: 44 call void @_ZN1AD1Ev(%struct.A* %a) 45 ret void 46 47 lpad: 48 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 49 cleanup 50 invoke void @_ZN1AD1Ev(%struct.A* %a) 51 to label %invoke.cont2 unwind label %terminate.lpad 52 53 invoke.cont2: 54 resume { i8*, i32 } %exn 55 56 terminate.lpad: 57 %exn1 = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 58 catch i8* null 59 call void @_ZSt9terminatev() noreturn nounwind 60 unreachable 61 } 62 63 define void @test0_out() uwtable ssp { 64 entry: 65 invoke void @test0_in() 66 to label %ret unwind label %lpad 67 68 ret: 69 ret void 70 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 79 80 catch: 81 %ignored = call i8* @__cxa_begin_catch(i8* %eh.exc) nounwind 82 call void @__cxa_end_catch() nounwind 83 br label %ret 84 85 eh.resume: 86 resume { i8*, i32 } %exn 87 } 88 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 97 ; CHECK-NEXT: cleanup 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 101 ; CHECK: [[LBL]]: 102 ; CHECK-NEXT: br label %[[LPAD:[^\s]+]] 103 ; CHECK: ret void 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]] 107 ; CHECK: [[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( 112 113 114 ;; Test 1 - Correctly handle phis in outer landing pads. 115 116 define void @test1_out() uwtable ssp { 117 entry: 118 invoke void @test0_in() 119 to label %cont unwind label %lpad 120 121 cont: 122 invoke void @test0_in() 123 to label %ret unwind label %lpad 124 125 ret: 126 ret void 127 128 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 138 139 catch: 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 144 br label %ret 145 146 eh.resume: 147 resume { i8*, i32 } %exn 148 } 149 150 ; 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]] 163 164 ; Inner landing pad from first inlining. 165 ; CHECK: [[LPAD1]]: 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]+]] 173 174 ; 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]] 182 183 ; Inner landing pad from second inlining. 184 ; CHECK: [[LPAD2]]: 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]+]] 192 193 ; CHECK: ret void 194 195 ; CHECK: [[LPAD]]: 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]] 201 202 ; 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]] 207 208 ; 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]] 216 217 ; CHECK: call void @use(i32 [[XJ1]]) 218 ; CHECK: call void @use(i32 [[YJ1]]) 219 220 ; CHECK: resume { i8*, i32 } 221 222 223 ;; Test 2 - Don't make invalid IR for inlines into landing pads without eh.exception calls 224 define void @test2_out() uwtable ssp { 225 entry: 226 invoke void @test0_in() 227 to label %ret unwind label %lpad 228 229 ret: 230 ret void 231 232 lpad: 233 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 234 cleanup 235 call void @_ZSt9terminatev() 236 unreachable 237 } 238 239 ; 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]] 250 251 252 ;; Test 3 - Deal correctly with split unwind edges. 253 define void @test3_out() uwtable ssp { 254 entry: 255 invoke void @test0_in() 256 to label %ret unwind label %lpad 257 258 ret: 259 ret void 260 261 lpad: 262 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 263 catch i8* bitcast (i8** @_ZTIi to i8*) 264 br label %lpad.cont 265 266 lpad.cont: 267 call void @_ZSt9terminatev() 268 unreachable 269 } 270 271 ; 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 277 ; CHECK: [[L]]: 278 ; CHECK-NEXT: br label %[[JOIN:[^\s]+]] 279 ; CHECK: [[JOIN]]: 280 ; CHECK-NEXT: phi { i8*, i32 } 281 ; CHECK-NEXT: br label %lpad.cont 282 ; CHECK: lpad.cont: 283 ; CHECK-NEXT: call void @_ZSt9terminatev() 284 285 286 ;; Test 4 - Split unwind edges with a dominance problem 287 define void @test4_out() uwtable ssp { 288 entry: 289 invoke void @test0_in() 290 to label %cont unwind label %lpad.crit 291 292 cont: 293 invoke void @opaque() 294 to label %ret unwind label %lpad 295 296 ret: 297 ret void 298 299 lpad.crit: 300 %exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 301 catch i8* bitcast (i8** @_ZTIi to i8*) 302 call void @opaque() nounwind 303 br label %terminate 304 305 lpad: 306 %exn2 = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0 307 catch i8* bitcast (i8** @_ZTIi to i8*) 308 br label %terminate 309 310 terminate: 311 %phi = phi i32 [ 0, %lpad.crit ], [ 1, %lpad ] 312 call void @use(i32 %phi) 313 call void @_ZSt9terminatev() 314 unreachable 315 } 316 317 ; 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 323 ; CHECK: [[L]]: 324 ; CHECK-NEXT: br label %[[JOIN:[^\s]+]] 325 ; CHECK: invoke void @opaque() 326 ; CHECK-NEXT: unwind label %lpad 327 ; CHECK: lpad.crit: 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]] 331 ; CHECK: [[JOIN]]: 332 ; CHECK-NEXT: phi { i8*, i32 } 333 ; CHECK-NEXT: call void @opaque() nounwind 334 ; CHECK-NEXT: br label %[[FIX:[^\s]+]] 335 ; CHECK: lpad: 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]] 339 ; CHECK: [[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() 343
