1; RUN: opt < %s -winehprepare -demote-catchswitch-only -wasmehprepare -S | FileCheck %s 2 3target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" 4target triple = "wasm32-unknown-unknown" 5 6; CHECK: @__wasm_lpad_context = external global { i32, i8*, i32 } 7 8@_ZTIi = external constant i8* 9%struct.Cleanup = type { i8 } 10 11; A single 'catch (int)' clause. 12; A wasm.catch() call, wasm.lsda() call, and personality call to generate a 13; selector should all be genereated after the catchpad. 14define void @test0() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) { 15; CHECK-LABEL: @test0() 16entry: 17 invoke void @foo() 18 to label %try.cont unwind label %catch.dispatch 19 20catch.dispatch: ; preds = %entry 21 %0 = catchswitch within none [label %catch.start] unwind to caller 22 23catch.start: ; preds = %catch.dispatch 24 %1 = catchpad within %0 [i8* bitcast (i8** @_ZTIi to i8*)] 25 %2 = call i8* @llvm.wasm.get.exception(token %1) 26 %3 = call i32 @llvm.wasm.get.ehselector(token %1) 27 %4 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) 28 %matches = icmp eq i32 %3, %4 29 br i1 %matches, label %catch, label %rethrow 30; CHECK: catch.start: 31; CHECK-NEXT: %[[CATCHPAD:.*]] = catchpad 32; CHECK-NEXT: %[[EXN:.*]] = call i8* @llvm.wasm.catch(i32 0) 33; CHECK-NEXT: call void @llvm.wasm.landingpad.index(i32 0) 34; CHECK-NEXT: store i32 0, i32* getelementptr inbounds ({ i32, i8*, i32 }, { i32, i8*, i32 }* @__wasm_lpad_context, i32 0, i32 0) 35; CHECK-NEXT: %[[LSDA:.*]] = call i8* @llvm.wasm.lsda() 36; CHECK-NEXT: store i8* %[[LSDA]], i8** getelementptr inbounds ({ i32, i8*, i32 }, { i32, i8*, i32 }* @__wasm_lpad_context, i32 0, i32 1) 37; CHECK-NEXT: call i32 @_Unwind_CallPersonality(i8* %[[EXN]]) {{.*}} [ "funclet"(token %[[CATCHPAD]]) ] 38; CHECK-NEXT: %[[SELECTOR:.*]] = load i32, i32* getelementptr inbounds ({ i32, i8*, i32 }, { i32, i8*, i32 }* @__wasm_lpad_context, i32 0, i32 2) 39; CHECK: icmp eq i32 %[[SELECTOR]] 40 41catch: ; preds = %catch.start 42 %5 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ] 43 call void @__cxa_end_catch() [ "funclet"(token %1) ] 44 catchret from %1 to label %try.cont 45; CHECK: catch: 46; CHECK-NEXT: call i8* @__cxa_begin_catch(i8* %[[EXN]]) 47 48rethrow: ; preds = %catch.start 49 call void @__cxa_rethrow() [ "funclet"(token %1) ] 50 unreachable 51 52try.cont: ; preds = %entry, %catch 53 ret void 54} 55 56; Two try-catches, one of them is with a single 'catch (...)' clause. 57; For the catchpad with a single 'catch (...)', only a wasm.catch() call should 58; be generated after the catchpad; wasm.landingpad.index() and personality call 59; should NOT be generated. For the other catchpad, the argument of 60; wasm.landingpad.index() should be not 1 but 0. 61define void @test1() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) { 62; CHECK-LABEL: @test1() 63entry: 64 invoke void @foo() 65 to label %try.cont unwind label %catch.dispatch 66 67catch.dispatch: ; preds = %entry 68 %0 = catchswitch within none [label %catch.start] unwind to caller 69 70catch.start: ; preds = %catch.dispatch 71 %1 = catchpad within %0 [i8* null] 72 %2 = call i8* @llvm.wasm.get.exception(token %1) 73 %3 = call i32 @llvm.wasm.get.ehselector(token %1) 74 %4 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ] 75 call void @__cxa_end_catch() [ "funclet"(token %1) ] 76 catchret from %1 to label %try.cont 77; CHECK: catch.start: 78; CHECK-NEXT: catchpad within %0 [i8* null] 79; CHECK-NEXT: call i8* @llvm.wasm.catch(i32 0) 80; CHECK-NOT: call void @llvm.wasm.landingpad.index 81; CHECK-NOT: store {{.*}} @__wasm_lpad_context 82; CHECK-NOT: call i8* @llvm.wasm.lsda() 83; CHECK-NOT: call i32 @_Unwind_CallPersonality 84; CHECK-NOT: load {{.*}} @__wasm_lpad_context 85 86try.cont: ; preds = %entry, %catch.start 87 invoke void @foo() 88 to label %try.cont7 unwind label %catch.dispatch2 89 90catch.dispatch2: ; preds = %try.cont 91 %5 = catchswitch within none [label %catch.start3] unwind to caller 92 93catch.start3: ; preds = %catch.dispatch2 94 %6 = catchpad within %5 [i8* bitcast (i8** @_ZTIi to i8*)] 95 %7 = call i8* @llvm.wasm.get.exception(token %6) 96 %8 = call i32 @llvm.wasm.get.ehselector(token %6) 97 %9 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) 98 %matches = icmp eq i32 %8, %9 99 br i1 %matches, label %catch4, label %rethrow 100; CHECK: catch.start3: 101; CHECK: call void @llvm.wasm.landingpad.index(i32 0) 102 103catch4: ; preds = %catch.start3 104 %10 = call i8* @__cxa_begin_catch(i8* %7) [ "funclet"(token %6) ] 105 call void @__cxa_end_catch() [ "funclet"(token %6) ] 106 catchret from %6 to label %try.cont7 107 108rethrow: ; preds = %catch.start3 109 call void @__cxa_rethrow() [ "funclet"(token %6) ] 110 unreachable 111 112try.cont7: ; preds = %try.cont, %catch4 113 ret void 114} 115 116; A nested try-catch within a catch. Within the nested catchpad, wasm.lsda() 117; call should NOT be generated. 118define void @test2() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) { 119; CHECK-LABEL: @test2() 120entry: 121 invoke void @foo() 122 to label %try.cont9 unwind label %catch.dispatch 123 124catch.dispatch: ; preds = %entry 125 %0 = catchswitch within none [label %catch.start] unwind to caller 126 127catch.start: ; preds = %catch.dispatch 128 %1 = catchpad within %0 [i8* bitcast (i8** @_ZTIi to i8*)] 129 %2 = call i8* @llvm.wasm.get.exception(token %1) 130 %3 = call i32 @llvm.wasm.get.ehselector(token %1) 131 %4 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) 132 %matches = icmp eq i32 %3, %4 133 br i1 %matches, label %catch, label %rethrow 134; CHECK: catch.start: 135; CHECK: call i8* @llvm.wasm.lsda() 136 137catch: ; preds = %catch.start 138 %5 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ] 139 invoke void @foo() [ "funclet"(token %1) ] 140 to label %try.cont unwind label %catch.dispatch2 141 142catch.dispatch2: ; preds = %catch 143 %6 = catchswitch within %1 [label %catch.start3] unwind label %ehcleanup 144 145catch.start3: ; preds = %catch.dispatch2 146 %7 = catchpad within %6 [i8* bitcast (i8** @_ZTIi to i8*)] 147 %8 = call i8* @llvm.wasm.get.exception(token %7) 148 %9 = call i32 @llvm.wasm.get.ehselector(token %7) 149 %10 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) 150 %matches4 = icmp eq i32 %9, %10 151 br i1 %matches4, label %catch6, label %rethrow5 152; CHECK: catch.start3: 153; CHECK-NOT: call i8* @llvm.wasm.lsda() 154 155catch6: ; preds = %catch.start3 156 %11 = call i8* @__cxa_begin_catch(i8* %8) [ "funclet"(token %7) ] 157 call void @__cxa_end_catch() [ "funclet"(token %7) ] 158 catchret from %7 to label %try.cont 159 160rethrow5: ; preds = %catch.start3 161 invoke void @__cxa_rethrow() [ "funclet"(token %7) ] 162 to label %unreachable unwind label %ehcleanup 163 164try.cont: ; preds = %catch, %catch6 165 call void @__cxa_end_catch() [ "funclet"(token %1) ] 166 catchret from %1 to label %try.cont9 167 168rethrow: ; preds = %catch.start 169 call void @__cxa_rethrow() [ "funclet"(token %1) ] 170 unreachable 171 172try.cont9: ; preds = %entry, %try.cont 173 ret void 174 175ehcleanup: ; preds = %rethrow5, %catch.dispatch2 176 %12 = cleanuppad within %1 [] 177 call void @__cxa_end_catch() [ "funclet"(token %12) ] 178 cleanupret from %12 unwind to caller 179; CHECK: ehcleanup: 180; CHECK-NEXT: cleanuppad 181; CHECK-NOT: call i8* @llvm.wasm.catch(i32 0) 182; CHECK-NOT: call void @llvm.wasm.landingpad.index 183; CHECK-NOT: store {{.*}} @__wasm_lpad_context 184; CHECK-NOT: call i8* @llvm.wasm.lsda() 185; CHECK-NOT: call i32 @_Unwind_CallPersonality 186; CHECK-NOT: load {{.*}} @__wasm_lpad_context 187 188unreachable: ; preds = %rethrow5 189 unreachable 190} 191 192; A cleanuppad with a call to __clang_call_terminate(). 193; A call to wasm.catch() should be generated after the cleanuppad. 194define hidden void @test3() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) { 195; CHECK-LABEL: @test3 196entry: 197 invoke void @foo() 198 to label %try.cont unwind label %catch.dispatch 199 200catch.dispatch: ; preds = %entry 201 %0 = catchswitch within none [label %catch.start] unwind to caller 202 203catch.start: ; preds = %catch.dispatch 204 %1 = catchpad within %0 [i8* null] 205 %2 = call i8* @llvm.wasm.get.exception(token %1) 206 %3 = call i32 @llvm.wasm.get.ehselector(token %1) 207 %4 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ] 208 invoke void @foo() [ "funclet"(token %1) ] 209 to label %invoke.cont1 unwind label %ehcleanup 210 211invoke.cont1: ; preds = %catch.start 212 call void @__cxa_end_catch() [ "funclet"(token %1) ] 213 catchret from %1 to label %try.cont 214 215try.cont: ; preds = %entry, %invoke.cont1 216 ret void 217 218ehcleanup: ; preds = %catch.start 219 %5 = cleanuppad within %1 [] 220 invoke void @__cxa_end_catch() [ "funclet"(token %5) ] 221 to label %invoke.cont2 unwind label %terminate 222 223invoke.cont2: ; preds = %ehcleanup 224 cleanupret from %5 unwind to caller 225 226terminate: ; preds = %ehcleanup 227 %6 = cleanuppad within %5 [] 228 %7 = call i8* @llvm.wasm.get.exception(token %6) 229 call void @__clang_call_terminate(i8* %7) [ "funclet"(token %6) ] 230 unreachable 231; CHECK: terminate: 232; CHECK-NEXT: cleanuppad 233; CHECK-NEXT: %[[EXN:.*]] = call i8* @llvm.wasm.catch(i32 0) 234; CHECK-NEXT: call void @__clang_call_terminate(i8* %[[EXN]]) 235} 236 237; PHI demotion test. Only the phi before catchswitch should be demoted; the phi 238; before cleanuppad should NOT. 239define void @test5() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) { 240; CHECK-LABEL: @test5 241entry: 242 %c = alloca %struct.Cleanup, align 1 243 invoke void @foo() 244 to label %invoke.cont unwind label %ehcleanup 245 246invoke.cont: ; preds = %entry 247 invoke void @foo() 248 to label %invoke.cont1 unwind label %ehcleanup 249 250invoke.cont1: ; preds = %invoke.cont 251 %call = call %struct.Cleanup* @_ZN7CleanupD1Ev(%struct.Cleanup* %c) 252 br label %try.cont 253 254ehcleanup: ; preds = %invoke.cont, %entry 255 %num.0 = phi i32 [ 2, %invoke.cont ], [ 1, %entry ] 256 %0 = cleanuppad within none [] 257 %call2 = call %struct.Cleanup* @_ZN7CleanupD1Ev(%struct.Cleanup* %c) [ "funclet"(token %0) ] 258 cleanupret from %0 unwind label %catch.dispatch 259; CHECK: ehcleanup: 260; CHECK-NEXT: = phi 261 262catch.dispatch: ; preds = %ehcleanup 263 %1 = catchswitch within none [label %catch.start] unwind to caller 264 265catch.start: ; preds = %catch.dispatch 266 %2 = catchpad within %1 [i8* null] 267 %3 = call i8* @llvm.wasm.get.exception(token %2) 268 %4 = call i32 @llvm.wasm.get.ehselector(token %2) 269 %5 = call i8* @__cxa_begin_catch(i8* %3) [ "funclet"(token %2) ] 270 call void @func(i32 %num.0) [ "funclet"(token %2) ] 271 call void @__cxa_end_catch() [ "funclet"(token %2) ] 272 catchret from %2 to label %try.cont 273 274try.cont: ; preds = %catch.start, %invoke.cont1 275 invoke void @foo() 276 to label %invoke.cont3 unwind label %catch.dispatch5 277 278invoke.cont3: ; preds = %try.cont 279 invoke void @foo() 280 to label %try.cont10 unwind label %catch.dispatch5 281 282catch.dispatch5: ; preds = %invoke.cont3, %try.cont 283 %num.1 = phi i32 [ 2, %invoke.cont3 ], [ 1, %try.cont ] 284 %6 = catchswitch within none [label %catch.start6] unwind to caller 285; CHECK: catch.dispatch5: 286; CHECK-NOT: = phi 287 288catch.start6: ; preds = %catch.dispatch5 289 %7 = catchpad within %6 [i8* null] 290 %8 = call i8* @llvm.wasm.get.exception(token %7) 291 %9 = call i32 @llvm.wasm.get.ehselector(token %7) 292 %10 = call i8* @__cxa_begin_catch(i8* %8) [ "funclet"(token %7) ] 293 call void @func(i32 %num.1) [ "funclet"(token %7) ] 294 call void @__cxa_end_catch() [ "funclet"(token %7) ] 295 catchret from %7 to label %try.cont10 296 297try.cont10: ; preds = %invoke.cont3, %catch.start6 298 ret void 299} 300 301declare void @foo() 302declare void @func(i32) 303declare %struct.Cleanup* @_ZN7CleanupD1Ev(%struct.Cleanup* returned) 304declare i32 @__gxx_wasm_personality_v0(...) 305declare i8* @llvm.wasm.get.exception(token) 306declare i32 @llvm.wasm.get.ehselector(token) 307declare i32 @llvm.eh.typeid.for(i8*) 308declare i8* @__cxa_begin_catch(i8*) 309declare void @__cxa_end_catch() 310declare void @__cxa_rethrow() 311declare void @__clang_call_terminate(i8*) 312 313; CHECK-DAG: declare i8* @llvm.wasm.catch(i32) 314; CHECK-DAG: declare void @llvm.wasm.landingpad.index(i32) 315; CHECK-DAG: declare i8* @llvm.wasm.lsda() 316; CHECK-DAG: declare i32 @_Unwind_CallPersonality(i8*) 317 318