411 lines
15 KiB
LLVM
411 lines
15 KiB
LLVM
; RUN: opt < %s -winehprepare -demote-catchswitch-only -wasmehprepare -S | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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; CHECK: @__wasm_lpad_context = external global { i32, i8*, i32 }
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@_ZTIi = external constant i8*
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%struct.Temp = type { i8 }
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; A single 'catch (int)' clause.
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; A wasm.catch() call, wasm.lsda() call, and personality call to generate a
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; selector should all be genereated after the catchpad.
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;
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; void foo();
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; void test0() {
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; try {
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; foo();
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; } catch (int) {
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; }
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; }
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define void @test0() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) {
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; CHECK-LABEL: @test0()
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entry:
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invoke void @foo()
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to label %try.cont unwind label %catch.dispatch
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catch.dispatch: ; preds = %entry
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%0 = catchswitch within none [label %catch.start] unwind to caller
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catch.start: ; preds = %catch.dispatch
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%1 = catchpad within %0 [i8* bitcast (i8** @_ZTIi to i8*)]
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%2 = call i8* @llvm.wasm.get.exception(token %1)
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%3 = call i32 @llvm.wasm.get.ehselector(token %1)
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%4 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
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%matches = icmp eq i32 %3, %4
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br i1 %matches, label %catch, label %rethrow
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; CHECK: catch.start:
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; CHECK-NEXT: %[[CATCHPAD:.*]] = catchpad
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; CHECK-NEXT: %[[EXN:.*]] = call i8* @llvm.wasm.extract.exception()
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; CHECK-NEXT: call void @llvm.wasm.landingpad.index(token %[[CATCHPAD]], i32 0)
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; CHECK-NEXT: store i32 0, i32* getelementptr inbounds ({ i32, i8*, i32 }, { i32, i8*, i32 }* @__wasm_lpad_context, i32 0, i32 0)
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; CHECK-NEXT: %[[LSDA:.*]] = call i8* @llvm.wasm.lsda()
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; CHECK-NEXT: store i8* %[[LSDA]], i8** getelementptr inbounds ({ i32, i8*, i32 }, { i32, i8*, i32 }* @__wasm_lpad_context, i32 0, i32 1)
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; CHECK-NEXT: call i32 @_Unwind_CallPersonality(i8* %[[EXN]]) {{.*}} [ "funclet"(token %[[CATCHPAD]]) ]
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; CHECK-NEXT: %[[SELECTOR:.*]] = load i32, i32* getelementptr inbounds ({ i32, i8*, i32 }, { i32, i8*, i32 }* @__wasm_lpad_context, i32 0, i32 2)
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; CHECK: icmp eq i32 %[[SELECTOR]]
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catch: ; preds = %catch.start
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%5 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ]
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call void @__cxa_end_catch() [ "funclet"(token %1) ]
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catchret from %1 to label %try.cont
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; CHECK: catch:
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; CHECK-NEXT: call i8* @__cxa_begin_catch(i8* %[[EXN]])
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rethrow: ; preds = %catch.start
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call void @llvm.wasm.rethrow.in.catch() [ "funclet"(token %1) ]
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unreachable
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try.cont: ; preds = %entry, %catch
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ret void
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}
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; Two try-catches.
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; For the catchpad with a single 'catch (...)', only a wasm.catch() call should
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; be generated after the catchpad; wasm.landingpad.index() and personality call
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; should NOT be generated. For the other catchpad, the argument of
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; wasm.landingpad.index() should be not 1 but 0.
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;
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; void foo();
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; void test1() {
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; try {
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; foo();
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; } catch (...) {
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; }
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; try {
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; foo();
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; } catch (int) {
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; }
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; }
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define void @test1() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) {
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; CHECK-LABEL: @test1()
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entry:
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invoke void @foo()
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to label %try.cont unwind label %catch.dispatch
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catch.dispatch: ; preds = %entry
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%0 = catchswitch within none [label %catch.start] unwind to caller
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catch.start: ; preds = %catch.dispatch
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%1 = catchpad within %0 [i8* null]
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%2 = call i8* @llvm.wasm.get.exception(token %1)
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%3 = call i32 @llvm.wasm.get.ehselector(token %1)
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%4 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ]
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call void @__cxa_end_catch() [ "funclet"(token %1) ]
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catchret from %1 to label %try.cont
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; CHECK: catch.start:
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; CHECK-NEXT: catchpad within %0 [i8* null]
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; CHECK-NOT: call void @llvm.wasm.landingpad.index
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; CHECK-NOT: store {{.*}} @__wasm_lpad_context
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; CHECK-NOT: call i8* @llvm.wasm.lsda()
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; CHECK-NOT: call i32 @_Unwind_CallPersonality
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; CHECK-NOT: load {{.*}} @__wasm_lpad_context
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try.cont: ; preds = %entry, %catch.start
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invoke void @foo()
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to label %try.cont7 unwind label %catch.dispatch2
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catch.dispatch2: ; preds = %try.cont
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%5 = catchswitch within none [label %catch.start3] unwind to caller
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catch.start3: ; preds = %catch.dispatch2
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%6 = catchpad within %5 [i8* bitcast (i8** @_ZTIi to i8*)]
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%7 = call i8* @llvm.wasm.get.exception(token %6)
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%8 = call i32 @llvm.wasm.get.ehselector(token %6)
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%9 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
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%matches = icmp eq i32 %8, %9
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br i1 %matches, label %catch4, label %rethrow
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; CHECK: catch.start3:
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; CHECK: call void @llvm.wasm.landingpad.index(token %{{.+}}, i32 0)
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catch4: ; preds = %catch.start3
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%10 = call i8* @__cxa_begin_catch(i8* %7) [ "funclet"(token %6) ]
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call void @__cxa_end_catch() [ "funclet"(token %6) ]
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catchret from %6 to label %try.cont7
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rethrow: ; preds = %catch.start3
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call void @llvm.wasm.rethrow.in.catch() [ "funclet"(token %6) ]
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unreachable
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try.cont7: ; preds = %try.cont, %catch4
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ret void
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}
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; A nested try-catch within a catch.
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;
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; void foo();
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; void test2() {
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; try {
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; foo();
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; } catch (int) {
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; try {
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; foo();
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; } catch (int) {
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; }
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; }
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; }
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; Within the nested catchpad, wasm.lsda() call should NOT be generated.
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define void @test2() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) {
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; CHECK-LABEL: @test2()
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entry:
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invoke void @foo()
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to label %try.cont9 unwind label %catch.dispatch
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catch.dispatch: ; preds = %entry
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%0 = catchswitch within none [label %catch.start] unwind to caller
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catch.start: ; preds = %catch.dispatch
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%1 = catchpad within %0 [i8* bitcast (i8** @_ZTIi to i8*)]
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%2 = call i8* @llvm.wasm.get.exception(token %1)
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%3 = call i32 @llvm.wasm.get.ehselector(token %1)
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%4 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
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%matches = icmp eq i32 %3, %4
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br i1 %matches, label %catch, label %rethrow
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; CHECK: catch.start:
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; CHECK: call i8* @llvm.wasm.lsda()
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catch: ; preds = %catch.start
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%5 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ]
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invoke void @foo() [ "funclet"(token %1) ]
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to label %try.cont unwind label %catch.dispatch2
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catch.dispatch2: ; preds = %catch
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%6 = catchswitch within %1 [label %catch.start3] unwind label %ehcleanup
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catch.start3: ; preds = %catch.dispatch2
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%7 = catchpad within %6 [i8* bitcast (i8** @_ZTIi to i8*)]
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%8 = call i8* @llvm.wasm.get.exception(token %7)
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%9 = call i32 @llvm.wasm.get.ehselector(token %7)
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%10 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
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%matches4 = icmp eq i32 %9, %10
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br i1 %matches4, label %catch6, label %rethrow5
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; CHECK: catch.start3:
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; CHECK-NOT: call i8* @llvm.wasm.lsda()
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catch6: ; preds = %catch.start3
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%11 = call i8* @__cxa_begin_catch(i8* %8) [ "funclet"(token %7) ]
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call void @__cxa_end_catch() [ "funclet"(token %7) ]
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catchret from %7 to label %try.cont
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rethrow5: ; preds = %catch.start3
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invoke void @llvm.wasm.rethrow.in.catch() [ "funclet"(token %7) ]
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to label %unreachable unwind label %ehcleanup
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try.cont: ; preds = %catch, %catch6
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call void @__cxa_end_catch() [ "funclet"(token %1) ]
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catchret from %1 to label %try.cont9
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rethrow: ; preds = %catch.start
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call void @llvm.wasm.rethrow.in.catch() [ "funclet"(token %1) ]
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unreachable
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try.cont9: ; preds = %entry, %try.cont
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ret void
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ehcleanup: ; preds = %rethrow5, %catch.dispatch2
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%12 = cleanuppad within %1 []
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call void @__cxa_end_catch() [ "funclet"(token %12) ]
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cleanupret from %12 unwind to caller
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; CHECK: ehcleanup:
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; CHECK-NEXT: cleanuppad
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; CHECK-NOT: call void @llvm.wasm.landingpad.index
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; CHECK-NOT: store {{.*}} @__wasm_lpad_context
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; CHECK-NOT: call i8* @llvm.wasm.lsda()
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; CHECK-NOT: call i32 @_Unwind_CallPersonality
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; CHECK-NOT: load {{.*}} @__wasm_lpad_context
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unreachable: ; preds = %rethrow5
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unreachable
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}
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; A cleanuppad with a call to __clang_call_terminate().
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; A call to wasm.catch() should be generated after the cleanuppad.
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;
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; void foo();
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; void test3() {
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; try {
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; foo();
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; } catch (...) {
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; foo();
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; }
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; }
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define void @test3() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) {
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; CHECK-LABEL: @test3
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entry:
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invoke void @foo()
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to label %try.cont unwind label %catch.dispatch
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catch.dispatch: ; preds = %entry
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%0 = catchswitch within none [label %catch.start] unwind to caller
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catch.start: ; preds = %catch.dispatch
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%1 = catchpad within %0 [i8* null]
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%2 = call i8* @llvm.wasm.get.exception(token %1)
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%3 = call i32 @llvm.wasm.get.ehselector(token %1)
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%4 = call i8* @__cxa_begin_catch(i8* %2) [ "funclet"(token %1) ]
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invoke void @foo() [ "funclet"(token %1) ]
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to label %invoke.cont1 unwind label %ehcleanup
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invoke.cont1: ; preds = %catch.start
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call void @__cxa_end_catch() [ "funclet"(token %1) ]
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catchret from %1 to label %try.cont
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try.cont: ; preds = %entry, %invoke.cont1
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ret void
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ehcleanup: ; preds = %catch.start
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%5 = cleanuppad within %1 []
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invoke void @__cxa_end_catch() [ "funclet"(token %5) ]
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to label %invoke.cont2 unwind label %terminate
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invoke.cont2: ; preds = %ehcleanup
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cleanupret from %5 unwind to caller
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terminate: ; preds = %ehcleanup
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%6 = cleanuppad within %5 []
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%7 = call i8* @llvm.wasm.get.exception(token %6)
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call void @__clang_call_terminate(i8* %7) [ "funclet"(token %6) ]
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unreachable
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; CHECK: terminate:
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; CHECK-NEXT: cleanuppad
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; CHECK-NEXT: %[[EXN:.*]] = call i8* @llvm.wasm.extract.exception
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; CHECK-NEXT: call void @__clang_call_terminate(i8* %[[EXN]])
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}
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; PHI demotion test. Only the phi before catchswitch should be demoted; the phi
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; before cleanuppad should NOT.
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;
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; void foo();
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; int bar(int) noexcept;
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; struct Temp {
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; ~Temp() {}
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; };
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;
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; void test4() {
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; int num;
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; try {
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; Temp t;
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; num = 1;
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; foo();
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; num = 2;
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; foo();
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; } catch (...) {
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; bar(num);
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; }
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; try {
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; foo();
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; num = 1;
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; foo();
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; num = 2;
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; } catch (...) {
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; bar(num);
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; }
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; }
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define void @test4() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) {
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; CHECK-LABEL: @test4
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entry:
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%t = alloca %struct.Temp, align 1
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invoke void @foo()
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to label %invoke.cont unwind label %ehcleanup
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invoke.cont: ; preds = %entry
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invoke void @foo()
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to label %invoke.cont1 unwind label %ehcleanup
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invoke.cont1: ; preds = %invoke.cont
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%call = call %struct.Temp* @_ZN4TempD2Ev(%struct.Temp* %t)
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br label %try.cont
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ehcleanup: ; preds = %invoke.cont, %entry
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%num.0 = phi i32 [ 2, %invoke.cont ], [ 1, %entry ]
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%0 = cleanuppad within none []
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%call2 = call %struct.Temp* @_ZN4TempD2Ev(%struct.Temp* %t) [ "funclet"(token %0) ]
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cleanupret from %0 unwind label %catch.dispatch
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; CHECK: ehcleanup:
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; CHECK-NEXT: = phi
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catch.dispatch: ; preds = %ehcleanup
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%1 = catchswitch within none [label %catch.start] unwind to caller
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catch.start: ; preds = %catch.dispatch
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%2 = catchpad within %1 [i8* null]
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%3 = call i8* @llvm.wasm.get.exception(token %2)
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%4 = call i32 @llvm.wasm.get.ehselector(token %2)
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%5 = call i8* @__cxa_begin_catch(i8* %3) [ "funclet"(token %2) ]
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call void @bar(i32 %num.0) [ "funclet"(token %2) ]
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call void @__cxa_end_catch() [ "funclet"(token %2) ]
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catchret from %2 to label %try.cont
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try.cont: ; preds = %catch.start, %invoke.cont1
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invoke void @foo()
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to label %invoke.cont3 unwind label %catch.dispatch5
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invoke.cont3: ; preds = %try.cont
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invoke void @foo()
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to label %try.cont10 unwind label %catch.dispatch5
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catch.dispatch5: ; preds = %invoke.cont3, %try.cont
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%num.1 = phi i32 [ 2, %invoke.cont3 ], [ 1, %try.cont ]
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%6 = catchswitch within none [label %catch.start6] unwind to caller
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; CHECK: catch.dispatch5:
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; CHECK-NOT: = phi
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catch.start6: ; preds = %catch.dispatch5
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%7 = catchpad within %6 [i8* null]
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%8 = call i8* @llvm.wasm.get.exception(token %7)
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%9 = call i32 @llvm.wasm.get.ehselector(token %7)
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%10 = call i8* @__cxa_begin_catch(i8* %8) [ "funclet"(token %7) ]
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call void @bar(i32 %num.1) [ "funclet"(token %7) ]
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call void @__cxa_end_catch() [ "funclet"(token %7) ]
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catchret from %7 to label %try.cont10
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try.cont10: ; preds = %invoke.cont3, %catch.start6
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ret void
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}
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; Tests if instructions after a call to @llvm.wasm.throw are deleted and the
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; BB's dead children are deleted.
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; CHECK-LABEL: @test5
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define i32 @test5(i1 %b, i8* %p) {
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entry:
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br i1 %b, label %bb.true, label %bb.false
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; CHECK: bb.true:
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; CHECK-NEXT: call void @llvm.wasm.throw(i32 0, i8* %p)
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; CHECK-NEXT: unreachable
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bb.true: ; preds = %entry
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call void @llvm.wasm.throw(i32 0, i8* %p)
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br label %bb.true.0
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; CHECK-NOT: bb.true.0
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bb.true.0: ; preds = %bb.true
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br label %merge
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; CHECK: bb.false
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bb.false: ; preds = %entry
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br label %merge
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; CHECK: merge
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merge: ; preds = %bb.true.0, %bb.false
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ret i32 0
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}
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declare void @foo()
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declare void @bar(i32)
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declare %struct.Temp* @_ZN4TempD2Ev(%struct.Temp* returned)
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declare i32 @__gxx_wasm_personality_v0(...)
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declare i8* @llvm.wasm.get.exception(token)
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declare i32 @llvm.wasm.get.ehselector(token)
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declare i32 @llvm.eh.typeid.for(i8*)
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declare void @llvm.wasm.throw(i32, i8*)
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declare void @llvm.wasm.rethrow.in.catch()
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declare i8* @__cxa_begin_catch(i8*)
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declare void @__cxa_end_catch()
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declare void @__clang_call_terminate(i8*)
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; CHECK-DAG: declare void @llvm.wasm.landingpad.index(token, i32 immarg)
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; CHECK-DAG: declare i8* @llvm.wasm.lsda()
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; CHECK-DAG: declare i32 @_Unwind_CallPersonality(i8*)
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