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 13declare void @_ZN1AC1Ev(%struct.A*) 14 15declare void @_ZN1AD1Ev(%struct.A*) 16 17declare void @use(i32) nounwind 18 19declare void @opaque() 20 21declare i8* @llvm.eh.exception() nounwind readonly 22 23declare i32 @llvm.eh.selector(i8*, i8*, ...) nounwind 24 25declare i32 @llvm.eh.typeid.for(i8*) nounwind 26 27declare void @llvm.eh.resume(i8*, i32) 28 29declare i32 @__gxx_personality_v0(...) 30 31declare i8* @__cxa_begin_catch(i8*) 32 33declare void @__cxa_end_catch() 34 35declare void @_ZSt9terminatev() 36 37define internal void @test0_in() alwaysinline uwtable ssp { 38entry: 39 %a = alloca %struct.A, align 1 40 %b = alloca %struct.A, align 1 41 call void @_ZN1AC1Ev(%struct.A* %a) 42 invoke void @_ZN1AC1Ev(%struct.A* %b) 43 to label %invoke.cont unwind label %lpad 44 45invoke.cont: 46 invoke void @_ZN1AD1Ev(%struct.A* %b) 47 to label %invoke.cont1 unwind label %lpad 48 49invoke.cont1: 50 call void @_ZN1AD1Ev(%struct.A* %a) 51 ret void 52 53lpad: 54 %exn = call i8* @llvm.eh.exception() nounwind 55 %eh.selector = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i32 0) nounwind 56 invoke void @_ZN1AD1Ev(%struct.A* %a) 57 to label %invoke.cont2 unwind label %terminate.lpad 58 59invoke.cont2: 60 call void @llvm.eh.resume(i8* %exn, i32 %eh.selector) noreturn 61 unreachable 62 63terminate.lpad: 64 %exn3 = call i8* @llvm.eh.exception() nounwind 65 %eh.selector4 = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn3, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* null) nounwind 66 call void @_ZSt9terminatev() noreturn nounwind 67 unreachable 68} 69 70define void @test0_out() uwtable ssp { 71entry: 72 invoke void @test0_in() 73 to label %ret unwind label %lpad 74 75ret: 76 ret void 77 78lpad: ; preds = %entry 79 %exn = call i8* @llvm.eh.exception() nounwind 80 %eh.selector = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* bitcast (i8** @_ZTIi to i8*)) nounwind 81 %0 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind 82 %1 = icmp eq i32 %eh.selector, %0 83 br i1 %1, label %catch, label %eh.resume 84 85catch: 86 %ignored = call i8* @__cxa_begin_catch(i8* %exn) nounwind 87 call void @__cxa_end_catch() nounwind 88 br label %ret 89 90eh.resume: 91 call void @llvm.eh.resume(i8* %exn, i32 %eh.selector) noreturn 92 unreachable 93} 94 95; CHECK: define void @test0_out() 96; CHECK: [[A:%.*]] = alloca %struct.A, 97; CHECK: [[B:%.*]] = alloca %struct.A, 98; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A]]) 99; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B]]) 100; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B]]) 101; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A]]) 102; CHECK: call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* {{%.*}}, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i32 0, i8* bitcast (i8** @_ZTIi to i8*)) 103; CHECK-NEXT: invoke void @_ZN1AD1Ev(%struct.A* [[A]]) 104; CHECK-NEXT: to label %[[LBL:[^\s]+]] unwind 105; CHECK: [[LBL]]: 106; CHECK-NEXT: br label %[[LPAD:[^\s]+]] 107; CHECK: ret void 108; CHECK: call i8* @llvm.eh.exception() 109; CHECK-NEXT: call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* {{%.*}}, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* bitcast (i8** @_ZTIi to i8*)) 110; CHECK-NEXT: br label %[[LPAD]] 111; CHECK: [[LPAD]]: 112; CHECK-NEXT: phi i8* [ 113; CHECK-NEXT: phi i32 [ 114; CHECK-NEXT: call i32 @llvm.eh.typeid.for( 115 116 117;; Test 1 - Correctly handle phis in outer landing pads. 118 119define void @test1_out() uwtable ssp { 120entry: 121 invoke void @test0_in() 122 to label %cont unwind label %lpad 123 124cont: 125 invoke void @test0_in() 126 to label %ret unwind label %lpad 127 128ret: 129 ret void 130 131lpad: 132 %x = phi i32 [ 0, %entry ], [ 1, %cont ] 133 %y = phi i32 [ 1, %entry ], [ 4, %cont ] 134 %exn = call i8* @llvm.eh.exception() nounwind 135 %eh.selector = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* bitcast (i8** @_ZTIi to i8*)) nounwind 136 %0 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind 137 %1 = icmp eq i32 %eh.selector, %0 138 br i1 %1, label %catch, label %eh.resume 139 140catch: 141 %ignored = call i8* @__cxa_begin_catch(i8* %exn) nounwind 142 call void @use(i32 %x) 143 call void @use(i32 %y) 144 call void @__cxa_end_catch() nounwind 145 br label %ret 146 147eh.resume: 148 call void @llvm.eh.resume(i8* %exn, i32 %eh.selector) noreturn 149 unreachable 150} 151 152; CHECK: define void @test1_out() 153; CHECK: [[A2:%.*]] = alloca %struct.A, 154; CHECK: [[B2:%.*]] = alloca %struct.A, 155; CHECK: [[A1:%.*]] = alloca %struct.A, 156; CHECK: [[B1:%.*]] = alloca %struct.A, 157; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A1]]) 158; CHECK-NEXT: unwind label %[[LPAD:[^\s]+]] 159; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B1]]) 160; CHECK-NEXT: unwind label %[[LPAD1:[^\s]+]] 161; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B1]]) 162; CHECK-NEXT: unwind label %[[LPAD1]] 163; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A1]]) 164; CHECK-NEXT: unwind label %[[LPAD]] 165 166; Inner landing pad from first inlining. 167; CHECK: [[LPAD1]]: 168; CHECK-NEXT: [[EXN1:%.*]] = call i8* @llvm.eh.exception() 169; CHECK-NEXT: [[SEL1:%.*]] = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* [[EXN1]], i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i32 0, i8* bitcast (i8** @_ZTIi to i8*)) 170; CHECK-NEXT: invoke void @_ZN1AD1Ev(%struct.A* [[A1]]) 171; CHECK-NEXT: to label %[[RESUME1:[^\s]+]] unwind 172; CHECK: [[RESUME1]]: 173; CHECK-NEXT: br label %[[LPAD_JOIN1:[^\s]+]] 174 175; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A2]]) 176; CHECK-NEXT: unwind label %[[LPAD]] 177; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B2]]) 178; CHECK-NEXT: unwind label %[[LPAD2:[^\s]+]] 179; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B2]]) 180; CHECK-NEXT: unwind label %[[LPAD2]] 181; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A2]]) 182; CHECK-NEXT: unwind label %[[LPAD]] 183 184; Inner landing pad from second inlining. 185; CHECK: [[LPAD2]]: 186; CHECK-NEXT: [[EXN2:%.*]] = call i8* @llvm.eh.exception() 187; CHECK-NEXT: [[SEL2:%.*]] = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* [[EXN2]], i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i32 0, 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: [[EXN:%.*]] = call i8* @llvm.eh.exception() 199; CHECK-NEXT: [[SEL:%.*]] = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* [[EXN]], i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), 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* [ [[EXN]], %[[LPAD]] ], [ [[EXN2]], %[[RESUME2]] ] 206; CHECK-NEXT: [[SELJ2:%.*]] = phi i32 [ [[SEL]], %[[LPAD]] ], [ [[SEL2]], %[[RESUME2]] ] 207; CHECK-NEXT: br label %[[LPAD_JOIN1]] 208 209; CHECK: [[LPAD_JOIN1]]: 210; CHECK-NEXT: [[XJ1:%.*]] = phi i32 [ [[XJ2]], %[[LPAD_JOIN2]] ], [ 0, %[[RESUME1]] ] 211; CHECK-NEXT: [[YJ1:%.*]] = phi i32 [ [[YJ2]], %[[LPAD_JOIN2]] ], [ 1, %[[RESUME1]] ] 212; CHECK-NEXT: [[EXNJ1:%.*]] = phi i8* [ [[EXNJ2]], %[[LPAD_JOIN2]] ], [ [[EXN1]], %[[RESUME1]] ] 213; CHECK-NEXT: [[SELJ1:%.*]] = phi i32 [ [[SELJ2]], %[[LPAD_JOIN2]] ], [ [[SEL1]], %[[RESUME1]] ] 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: call void @llvm.eh.resume(i8* [[EXNJ1]], i32 [[SELJ1]]) 221 222 223;; Test 2 - Don't make invalid IR for inlines into landing pads without eh.exception calls 224define void @test2_out() uwtable ssp { 225entry: 226 invoke void @test0_in() 227 to label %ret unwind label %lpad 228 229ret: 230 ret void 231 232lpad: 233 call void @_ZSt9terminatev() 234 unreachable 235} 236 237; CHECK: define void @test2_out() 238; CHECK: [[A:%.*]] = alloca %struct.A, 239; CHECK: [[B:%.*]] = alloca %struct.A, 240; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[A]]) 241; CHECK-NEXT: unwind label %[[LPAD:[^\s]+]] 242; CHECK: invoke void @_ZN1AC1Ev(%struct.A* [[B]]) 243; CHECK-NEXT: unwind label %[[LPAD2:[^\s]+]] 244; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[B]]) 245; CHECK-NEXT: unwind label %[[LPAD2]] 246; CHECK: invoke void @_ZN1AD1Ev(%struct.A* [[A]]) 247; CHECK-NEXT: unwind label %[[LPAD]] 248 249 250;; Test 3 - Deal correctly with split unwind edges. 251define void @test3_out() uwtable ssp { 252entry: 253 invoke void @test0_in() 254 to label %ret unwind label %lpad 255 256ret: 257 ret void 258 259lpad: 260 br label %lpad.cont 261 262lpad.cont: 263 %exn = call i8* @llvm.eh.exception() nounwind 264 %eh.selector = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* bitcast (i8** @_ZTIi to i8*)) nounwind 265 call void @_ZSt9terminatev() 266 unreachable 267} 268 269; CHECK: define void @test3_out() 270; CHECK: call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* {{%.*}}, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i32 0, i8* bitcast (i8** @_ZTIi to i8*)) 271; CHECK-NEXT: invoke void @_ZN1AD1Ev( 272; CHECK-NEXT: to label %[[L:[^\s]+]] unwind 273; CHECK: [[L]]: 274; CHECK-NEXT: br label %[[JOIN:[^\s]+]] 275; CHECK: [[JOIN]]: 276; CHECK-NEXT: phi 277; CHECK-NEXT: phi 278; CHECK-NEXT: br label %lpad.cont 279; CHECK: lpad.cont: 280; CHECK-NEXT: call void @_ZSt9terminatev() 281 282 283;; Test 4 - Split unwind edges with a dominance problem 284define void @test4_out() uwtable ssp { 285entry: 286 invoke void @test0_in() 287 to label %cont unwind label %lpad.crit 288 289cont: 290 invoke void @opaque() 291 to label %ret unwind label %lpad 292 293ret: 294 ret void 295 296lpad.crit: 297 call void @opaque() nounwind 298 br label %lpad 299 300lpad: 301 %phi = phi i32 [ 0, %lpad.crit ], [ 1, %cont ] 302 %exn = call i8* @llvm.eh.exception() nounwind 303 %eh.selector = call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* bitcast (i8** @_ZTIi to i8*)) nounwind 304 call void @use(i32 %phi) 305 call void @_ZSt9terminatev() 306 unreachable 307} 308 309; CHECK: define void @test4_out() 310; CHECK: call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* {{%.*}}, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i32 0, i8* bitcast (i8** @_ZTIi to i8*)) 311; CHECK-NEXT: invoke void @_ZN1AD1Ev( 312; CHECK-NEXT: to label %[[L:[^\s]+]] unwind 313; CHECK: [[L]]: 314; CHECK-NEXT: br label %[[JOIN:[^\s]+]] 315; CHECK: invoke void @opaque() 316; CHECK-NEXT: unwind label %lpad 317; CHECK: lpad.crit: 318; CHECK-NEXT: call i8* @llvm.eh.exception() 319; CHECK-NEXT: call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %4, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* bitcast (i8** @_ZTIi to i8*)) 320; CHECK-NEXT: br label %[[JOIN]] 321; CHECK: [[JOIN]]: 322; CHECK-NEXT: phi i8* 323; CHECK-NEXT: phi i32 324; CHECK-NEXT: call void @opaque() nounwind 325; CHECK-NEXT: br label %[[FIX:[^\s]+]] 326; CHECK: lpad: 327; CHECK-NEXT: [[T0:%.*]] = phi i32 [ 1, %cont ] 328; CHECK-NEXT: call i8* @llvm.eh.exception() nounwind 329; CHECK-NEXT: call i32 (i8*, i8*, ...)* @llvm.eh.selector(i8* %exn, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* bitcast (i8** @_ZTIi to i8*)) 330; CHECK-NEXT: br label %[[FIX]] 331; CHECK: [[FIX]]: 332; CHECK-NEXT: [[T1:%.*]] = phi i32 [ [[T0]], %lpad ], [ 0, %[[JOIN]] ] 333; CHECK-NEXT: phi i8* 334; CHECK-NEXT: phi i32 335; CHECK-NEXT: call void @use(i32 [[T1]]) 336; CHECK-NEXT: call void @_ZSt9terminatev() 337