diff options
Diffstat (limited to 'llvm/test/CodeGen/WebAssembly/eh-lsda.ll')
| -rw-r--r-- | llvm/test/CodeGen/WebAssembly/eh-lsda.ll | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/WebAssembly/eh-lsda.ll b/llvm/test/CodeGen/WebAssembly/eh-lsda.ll new file mode 100644 index 00000000000..fd550938c42 --- /dev/null +++ b/llvm/test/CodeGen/WebAssembly/eh-lsda.ll @@ -0,0 +1,239 @@ +; RUN: llc < %s -disable-wasm-fallthrough-return-opt -wasm-keep-registers -exception-model=wasm -mattr=+exception-handling | FileCheck -allow-deprecated-dag-overlap %s +target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" +target triple = "wasm32-unknown-unknown" + +@_ZTIi = external constant i8* +@_ZTIf = external constant i8* +@_ZTId = external constant i8* + +; Single catch (...) does not need an exception table. +; +; try { +; may_throw(); +; } catch (...) { +; } +; CHECK-LABEL: test0: +; CHECK-NOT: GCC_except_table +define void @test0() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) { +entry: + invoke void @may_throw() + to label %try.cont unwind label %catch.dispatch + +catch.dispatch: ; preds = %entry + %0 = catchswitch within none [label %catch.start] unwind to caller + +catch.start: ; preds = %catch.dispatch + %1 = catchpad within %0 [i8* null] + %2 = call i8* @llvm.wasm.get.exception(token %1) + %3 = call i32 @llvm.wasm.get.ehselector(token %1) + %4 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ] + call void @__cxa_end_catch() [ "funclet"(token %1) ] + catchret from %1 to label %try.cont + +try.cont: ; preds = %entry, %catch.start + ret void +} + +; Exception table generation + shared action test. +; +; try { +; may_throw(); +; } catch (int) { +; } catch (float) { +; } catch (double) { +; } catch (...) { +; } +; +; try { +; may_throw(); +; } catch (double) { +; } catch (...) { +; } +; +; try { +; may_throw(); +; } catch (int) { +; } catch (float) { +; } +; +; There are three landing pads. The second landing pad should share action table +; entries with the first landing pad because they end with the same sequence +; (double -> ...). But the third landing table cannot share action table entries +; with others, so it should create its own entries. +; CHECK-LABEL: test1: +; CHECK: .section .rodata.gcc_except_table,"",@ +; CHECK-NEXT: .p2align 2 +; CHECK-NEXT: GCC_except_table[[START:[0-9]+]]: +; CHECK-NEXT: .Lexception0: +; CHECK-NEXT: .int8 255 # @LPStart Encoding = omit +; CHECK-NEXT: .int8 0 # @TType Encoding = absptr +; CHECK-NEXT: .uleb128 .Lttbase0-.Lttbaseref0 +; CHECK-NEXT: .Lttbaseref0: +; CHECK-NEXT: .int8 1 # Call site Encoding = uleb128 +; CHECK-NEXT: .uleb128 .Lcst_end0-.Lcst_begin0 +; CHECK-NEXT: .Lcst_begin0: +; CHECK-NEXT: .int8 0 # >> Call Site 0 << +; CHECK-NEXT: # On exception at call site 0 +; CHECK-NEXT: .int8 7 # Action: 4 +; CHECK-NEXT: .int8 1 # >> Call Site 1 << +; CHECK-NEXT: # On exception at call site 1 +; CHECK-NEXT: .int8 3 # Action: 2 +; CHECK-NEXT: .int8 2 # >> Call Site 2 << +; CHECK-NEXT: # On exception at call site 2 +; CHECK-NEXT: .int8 11 # Action: 6 +; CHECK-NEXT: .Lcst_end0: +; CHECK-NEXT: .int8 1 # >> Action Record 1 << +; CHECK-NEXT: # Catch TypeInfo 1 +; CHECK-NEXT: .int8 0 # No further actions +; CHECK-NEXT: .int8 2 # >> Action Record 2 << +; CHECK-NEXT: # Catch TypeInfo 2 +; CHECK-NEXT: .int8 125 # Continue to action 1 +; CHECK-NEXT: .int8 3 # >> Action Record 3 << +; CHECK-NEXT: # Catch TypeInfo 3 +; CHECK-NEXT: .int8 125 # Continue to action 2 +; CHECK-NEXT: .int8 4 # >> Action Record 4 << +; CHECK-NEXT: # Catch TypeInfo 4 +; CHECK-NEXT: .int8 125 # Continue to action 3 +; CHECK-NEXT: .int8 3 # >> Action Record 5 << +; CHECK-NEXT: # Catch TypeInfo 3 +; CHECK-NEXT: .int8 0 # No further actions +; CHECK-NEXT: .int8 4 # >> Action Record 6 << +; CHECK-NEXT: # Catch TypeInfo 4 +; CHECK-NEXT: .int8 125 # Continue to action 5 +; CHECK-NEXT: .p2align 2 +; CHECK-NEXT: # >> Catch TypeInfos << +; CHECK-NEXT: .int32 _ZTIi # TypeInfo 4 +; CHECK-NEXT: .int32 _ZTIf # TypeInfo 3 +; CHECK-NEXT: .int32 _ZTId # TypeInfo 2 +; CHECK-NEXT: .int32 0 # TypeInfo 1 +; CHECK-NEXT: .Lttbase0: +; CHECK-NEXT: .p2align 2 +; CHECK-NEXT: .LGCC_except_table_end[[END:[0-9]+]]: +; CHECK-NEXT: .size GCC_except_table[[START]], .LGCC_except_table_end[[END]]-GCC_except_table[[START]] +define void @test1() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) { +entry: + invoke void @may_throw() + to label %try.cont unwind label %catch.dispatch + +catch.dispatch: ; preds = %entry + %0 = catchswitch within none [label %catch.start] unwind to caller + +catch.start: ; preds = %catch.dispatch + %1 = catchpad within %0 [i8* bitcast (i8** @_ZTIi to i8*), i8* bitcast (i8** @_ZTIf to i8*), i8* bitcast (i8** @_ZTId to i8*), i8* null] + %2 = call i8* @llvm.wasm.get.exception(token %1) + %3 = call i32 @llvm.wasm.get.ehselector(token %1) + %4 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) + %matches = icmp eq i32 %3, %4 + br i1 %matches, label %catch10, label %catch.fallthrough + +catch10: ; preds = %catch.start + %5 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ] + %6 = bitcast i8* %5 to i32* + %7 = load i32, i32* %6, align 4 + call void @__cxa_end_catch() [ "funclet"(token %1) ] + catchret from %1 to label %try.cont + +try.cont: ; preds = %entry, %catch, %catch4, %catch7, %catch10 + invoke void @may_throw() + to label %try.cont23 unwind label %catch.dispatch14 + +catch.dispatch14: ; preds = %try.cont + %8 = catchswitch within none [label %catch.start15] unwind to caller + +catch.start15: ; preds = %catch.dispatch14 + %9 = catchpad within %8 [i8* bitcast (i8** @_ZTId to i8*), i8* null] + %10 = call i8* @llvm.wasm.get.exception(token %9) + %11 = call i32 @llvm.wasm.get.ehselector(token %9) + %12 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTId to i8*)) + %matches16 = icmp eq i32 %11, %12 + %13 = call i8* @__cxa_begin_catch(i8* %10) [ "funclet"(token %9) ] + br i1 %matches16, label %catch20, label %catch17 + +catch20: ; preds = %catch.start15 + %14 = bitcast i8* %13 to double* + %15 = load double, double* %14, align 8 + call void @__cxa_end_catch() [ "funclet"(token %9) ] + catchret from %9 to label %try.cont23 + +try.cont23: ; preds = %try.cont, %catch17, %catch20 + invoke void @may_throw() + to label %try.cont36 unwind label %catch.dispatch25 + +catch.dispatch25: ; preds = %try.cont23 + %16 = catchswitch within none [label %catch.start26] unwind to caller + +catch.start26: ; preds = %catch.dispatch25 + %17 = catchpad within %16 [i8* bitcast (i8** @_ZTIi to i8*), i8* bitcast (i8** @_ZTIf to i8*)] + %18 = call i8* @llvm.wasm.get.exception(token %17) + %19 = call i32 @llvm.wasm.get.ehselector(token %17) + %20 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) + %matches27 = icmp eq i32 %19, %20 + br i1 %matches27, label %catch33, label %catch.fallthrough28 + +catch33: ; preds = %catch.start26 + %21 = call i8* @__cxa_begin_catch(i8* %18) [ "funclet"(token %17) ] + %22 = bitcast i8* %21 to i32* + %23 = load i32, i32* %22, align 4 + call void @__cxa_end_catch() [ "funclet"(token %17) ] + catchret from %17 to label %try.cont36 + +catch.fallthrough28: ; preds = %catch.start26 + %24 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIf to i8*)) + %matches29 = icmp eq i32 %19, %24 + br i1 %matches29, label %catch30, label %rethrow + +catch30: ; preds = %catch.fallthrough28 + %25 = call i8* @__cxa_begin_catch(i8* %18) [ "funclet"(token %17) ] + %26 = bitcast i8* %25 to float* + %27 = load float, float* %26, align 4 + call void @__cxa_end_catch() [ "funclet"(token %17) ] + catchret from %17 to label %try.cont36 + +rethrow: ; preds = %catch.fallthrough28 + call void @__cxa_rethrow() [ "funclet"(token %17) ] + unreachable + +try.cont36: ; preds = %try.cont23, %catch30, %catch33 + ret void + +catch17: ; preds = %catch.start15 + call void @__cxa_end_catch() [ "funclet"(token %9) ] + catchret from %9 to label %try.cont23 + +catch.fallthrough: ; preds = %catch.start + %28 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIf to i8*)) + %matches1 = icmp eq i32 %3, %28 + br i1 %matches1, label %catch7, label %catch.fallthrough2 + +catch7: ; preds = %catch.fallthrough + %29 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ] + %30 = bitcast i8* %29 to float* + %31 = load float, float* %30, align 4 + call void @__cxa_end_catch() [ "funclet"(token %1) ] + catchret from %1 to label %try.cont + +catch.fallthrough2: ; preds = %catch.fallthrough + %32 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTId to i8*)) + %matches3 = icmp eq i32 %3, %32 + %33 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ] + br i1 %matches3, label %catch4, label %catch + +catch4: ; preds = %catch.fallthrough2 + %34 = bitcast i8* %33 to double* + %35 = load double, double* %34, align 8 + call void @__cxa_end_catch() [ "funclet"(token %1) ] + catchret from %1 to label %try.cont + +catch: ; preds = %catch.fallthrough2 + call void @__cxa_end_catch() [ "funclet"(token %1) ] + catchret from %1 to label %try.cont +} + +declare void @may_throw() +declare i32 @llvm.eh.typeid.for(i8*) +declare i8* @llvm.wasm.get.exception(token) +declare i32 @llvm.wasm.get.ehselector(token) +declare void @__cxa_rethrow() +declare i8* @__cxa_begin_catch(i8*) +declare void @__cxa_end_catch() +declare i32 @__gxx_wasm_personality_v0(...) |
