| ; RUN: llc < %s -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -disable-block-placement -verify-machineinstrs -fast-isel=false -machine-sink-split-probability-threshold=0 -cgp-freq-ratio-to-skip-merge=1000 -exception-model=wasm -mattr=+exception-handling | FileCheck %s |
| |
| target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" |
| target triple = "wasm32-unknown-unknown" |
| |
| @_ZTIi = external constant i8* |
| @_ZTId = external constant i8* |
| |
| ; Simple test case with two catch clauses |
| ; |
| ; void foo(); |
| ; void test0() { |
| ; try { |
| ; foo(); |
| ; } catch (int) { |
| ; } catch (double) { |
| ; } |
| ; } |
| |
| ; CHECK-LABEL: test0 |
| ; CHECK: try |
| ; CHECK: call foo |
| ; CHECK: catch |
| ; CHECK: block |
| ; CHECK: br_if 0, {{.*}} # 0: down to label2 |
| ; CHECK: i32.call $drop=, __cxa_begin_catch |
| ; CHECK: call __cxa_end_catch |
| ; CHECK: br 1 # 1: down to label0 |
| ; CHECK: end_block # label2: |
| ; CHECK: block |
| ; CHECK: br_if 0, {{.*}} # 0: down to label3 |
| ; CHECK: i32.call $drop=, __cxa_begin_catch |
| ; CHECK: call __cxa_end_catch |
| ; CHECK: br 1 # 1: down to label0 |
| ; CHECK: end_block # label3: |
| ; CHECK: rethrow {{.*}} # to caller |
| ; CHECK: end_try # label0: |
| define void @test0() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) { |
| entry: |
| invoke void @foo() |
| 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** @_ZTId to i8*)] |
| %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 %catch2, label %catch.fallthrough |
| |
| catch2: ; preds = %catch.start |
| %5 = 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 |
| |
| catch.fallthrough: ; preds = %catch.start |
| %6 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTId to i8*)) |
| %matches1 = icmp eq i32 %3, %6 |
| br i1 %matches1, label %catch, label %rethrow |
| |
| catch: ; preds = %catch.fallthrough |
| %7 = 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 |
| |
| rethrow: ; preds = %catch.fallthrough |
| call void @llvm.wasm.rethrow.in.catch() [ "funclet"(token %1) ] |
| unreachable |
| |
| try.cont: ; preds = %entry, %catch, %catch2 |
| ret void |
| } |
| |
| ; Nested try-catches within a catch |
| ; void test1() { |
| ; try { |
| ; foo(); |
| ; } catch (int) { |
| ; try { |
| ; foo(); |
| ; } catch (int) { |
| ; foo(); |
| ; } |
| ; } |
| ; } |
| |
| ; CHECK-LABEL: test1 |
| ; CHECK: try |
| ; CHECK: call foo |
| ; CHECK: catch |
| ; CHECK: block |
| ; CHECK: block |
| ; CHECK: br_if 0, {{.*}} # 0: down to label7 |
| ; CHECK: i32.call $drop=, __cxa_begin_catch |
| ; CHECK: try |
| ; CHECK: call foo |
| ; CHECK: br 2 # 2: down to label6 |
| ; CHECK: catch |
| ; CHECK: try |
| ; CHECK: block |
| ; CHECK: br_if 0, {{.*}} # 0: down to label11 |
| ; CHECK: i32.call $drop=, __cxa_begin_catch |
| ; CHECK: try |
| ; CHECK: call foo |
| ; CHECK: br 2 # 2: down to label9 |
| ; CHECK: catch |
| ; CHECK: call __cxa_end_catch |
| ; CHECK: rethrow {{.*}} # down to catch3 |
| ; CHECK: end_try |
| ; CHECK: end_block # label11: |
| ; CHECK: rethrow {{.*}} # down to catch3 |
| ; CHECK: catch {{.*}} # catch3: |
| ; CHECK: call __cxa_end_catch |
| ; CHECK: rethrow {{.*}} # to caller |
| ; CHECK: end_try # label9: |
| ; CHECK: call __cxa_end_catch |
| ; CHECK: br 2 # 2: down to label6 |
| ; CHECK: end_try |
| ; CHECK: end_block # label7: |
| ; CHECK: rethrow {{.*}} # to caller |
| ; CHECK: end_block # label6: |
| ; CHECK: call __cxa_end_catch |
| ; CHECK: end_try |
| define void @test1() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) { |
| entry: |
| invoke void @foo() |
| to label %try.cont11 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*)] |
| %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 %catch, label %rethrow |
| |
| catch: ; 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 |
| invoke void @foo() [ "funclet"(token %1) ] |
| to label %try.cont unwind label %catch.dispatch2 |
| |
| catch.dispatch2: ; preds = %catch |
| %8 = catchswitch within %1 [label %catch.start3] unwind label %ehcleanup9 |
| |
| catch.start3: ; preds = %catch.dispatch2 |
| %9 = catchpad within %8 [i8* bitcast (i8** @_ZTIi to i8*)] |
| %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** @_ZTIi to i8*)) |
| %matches4 = icmp eq i32 %11, %12 |
| br i1 %matches4, label %catch6, label %rethrow5 |
| |
| catch6: ; preds = %catch.start3 |
| %13 = call i8* @__cxa_begin_catch(i8* %10) [ "funclet"(token %9) ] |
| %14 = bitcast i8* %13 to i32* |
| %15 = load i32, i32* %14, align 4 |
| invoke void @foo() [ "funclet"(token %9) ] |
| to label %invoke.cont8 unwind label %ehcleanup |
| |
| invoke.cont8: ; preds = %catch6 |
| call void @__cxa_end_catch() [ "funclet"(token %9) ] |
| catchret from %9 to label %try.cont |
| |
| rethrow5: ; preds = %catch.start3 |
| invoke void @llvm.wasm.rethrow.in.catch() [ "funclet"(token %9) ] |
| to label %unreachable unwind label %ehcleanup9 |
| |
| try.cont: ; preds = %catch, %invoke.cont8 |
| call void @__cxa_end_catch() [ "funclet"(token %1) ] |
| catchret from %1 to label %try.cont11 |
| |
| rethrow: ; preds = %catch.start |
| call void @llvm.wasm.rethrow.in.catch() [ "funclet"(token %1) ] |
| unreachable |
| |
| try.cont11: ; preds = %entry, %try.cont |
| ret void |
| |
| ehcleanup: ; preds = %catch6 |
| %16 = cleanuppad within %9 [] |
| call void @__cxa_end_catch() [ "funclet"(token %16) ] |
| cleanupret from %16 unwind label %ehcleanup9 |
| |
| ehcleanup9: ; preds = %ehcleanup, %rethrow5, %catch.dispatch2 |
| %17 = cleanuppad within %1 [] |
| call void @__cxa_end_catch() [ "funclet"(token %17) ] |
| cleanupret from %17 unwind to caller |
| |
| unreachable: ; preds = %rethrow5 |
| unreachable |
| } |
| |
| ; Nested loop within a catch clause |
| ; void test2() { |
| ; try { |
| ; foo(); |
| ; } catch (...) { |
| ; for (int i = 0; i < 50; i++) |
| ; foo(); |
| ; } |
| ; } |
| |
| ; CHECK-LABEL: test2 |
| ; CHECK: try |
| ; CHECK: call foo |
| ; CHECK: catch |
| ; CHECK: i32.call $drop=, __cxa_begin_catch |
| ; CHECK: loop # label15: |
| ; CHECK: block |
| ; CHECK: block |
| ; CHECK: br_if 0, {{.*}} # 0: down to label17 |
| ; CHECK: try |
| ; CHECK: call foo |
| ; CHECK: br 2 # 2: down to label16 |
| ; CHECK: catch |
| ; CHECK: try |
| ; CHECK: call __cxa_end_catch |
| ; CHECK: catch |
| ; CHECK: call __clang_call_terminate |
| ; CHECK: unreachable |
| ; CHECK: end_try |
| ; CHECK: rethrow {{.*}} # to caller |
| ; CHECK: end_try |
| ; CHECK: end_block # label17: |
| ; CHECK: call __cxa_end_catch |
| ; CHECK: br 2 # 2: down to label13 |
| ; CHECK: end_block # label16: |
| ; CHECK: br 0 # 0: up to label15 |
| ; CHECK: end_loop |
| ; CHECK: end_try # label13: |
| define void @test2() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) { |
| entry: |
| invoke void @foo() |
| 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) ] |
| br label %for.cond |
| |
| for.cond: ; preds = %for.inc, %catch.start |
| %i.0 = phi i32 [ 0, %catch.start ], [ %inc, %for.inc ] |
| %cmp = icmp slt i32 %i.0, 50 |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.body: ; preds = %for.cond |
| invoke void @foo() [ "funclet"(token %1) ] |
| to label %for.inc unwind label %ehcleanup |
| |
| for.inc: ; preds = %for.body |
| %inc = add nsw i32 %i.0, 1 |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| call void @__cxa_end_catch() [ "funclet"(token %1) ] |
| catchret from %1 to label %try.cont |
| |
| try.cont: ; preds = %for.end, %entry |
| ret void |
| |
| ehcleanup: ; preds = %for.body |
| %5 = cleanuppad within %1 [] |
| invoke void @__cxa_end_catch() [ "funclet"(token %5) ] |
| to label %invoke.cont2 unwind label %terminate |
| |
| invoke.cont2: ; preds = %ehcleanup |
| cleanupret from %5 unwind to caller |
| |
| terminate: ; preds = %ehcleanup |
| %6 = cleanuppad within %5 [] |
| %7 = call i8* @llvm.wasm.get.exception(token %6) |
| call void @__clang_call_terminate(i8* %7) [ "funclet"(token %6) ] |
| unreachable |
| } |
| |
| declare void @foo() |
| declare void @bar() |
| declare i32 @__gxx_wasm_personality_v0(...) |
| declare i8* @llvm.wasm.get.exception(token) |
| declare i32 @llvm.wasm.get.ehselector(token) |
| declare void @llvm.wasm.rethrow.in.catch() |
| declare i32 @llvm.eh.typeid.for(i8*) |
| declare i8* @__cxa_begin_catch(i8*) |
| declare void @__cxa_end_catch() |
| declare void @__clang_call_terminate(i8*) |
| declare void @_ZSt9terminatev() |