281 lines
9.8 KiB
LLVM
281 lines
9.8 KiB
LLVM
|
; RUN: opt < %s -win-eh-prepare -demote-catchswitch-only -wasm-eh-prepare -S | FileCheck %s
|
||
|
|
; RUN: opt < %s -win-eh-prepare -demote-catchswitch-only -wasm-eh-prepare -S --mattr=+atomics,+bulk-memory | FileCheck %s
|
||
|
|
; RUN: opt < %s -passes='win-eh-prepare<demote-catchswitch-only>,wasm-eh-prepare' -S | FileCheck %s
|
||
|
|
; RUN: opt < %s -passes='win-eh-prepare<demote-catchswitch-only>,wasm-eh-prepare' -S --mattr=+atomics,+bulk-memory | FileCheck %s
|
||
|
|
|
||
|
|
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
||
|
|
target triple = "wasm32-unknown-unknown"
|
||
|
|
|
||
|
|
; CHECK: @__wasm_lpad_context = external thread_local global { i32, ptr, i32 }
|
||
|
|
|
||
|
|
@_ZTIi = external constant ptr
|
||
|
|
%struct.Temp = type { i8 }
|
||
|
|
|
||
|
|
; A single 'catch (int)' clause.
|
||
|
|
; A wasm.catch() call, wasm.lsda() call, and personality call to generate a
|
||
|
|
; selector should all be genereated after the catchpad.
|
||
|
|
;
|
||
|
|
; void foo();
|
||
|
|
; void test0() {
|
||
|
|
; try {
|
||
|
|
; foo();
|
||
|
|
; } catch (int) {
|
||
|
|
; }
|
||
|
|
; }
|
||
|
|
define void @test0() personality ptr @__gxx_wasm_personality_v0 {
|
||
|
|
; CHECK-LABEL: @test0()
|
||
|
|
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 [ptr @_ZTIi]
|
||
|
|
%2 = call ptr @llvm.wasm.get.exception(token %1)
|
||
|
|
%3 = call i32 @llvm.wasm.get.ehselector(token %1)
|
||
|
|
%4 = call i32 @llvm.eh.typeid.for(ptr @_ZTIi)
|
||
|
|
%matches = icmp eq i32 %3, %4
|
||
|
|
br i1 %matches, label %catch, label %rethrow
|
||
|
|
; CHECK: catch.start:
|
||
|
|
; CHECK-NEXT: %[[CATCHPAD:.*]] = catchpad
|
||
|
|
; CHECK-NEXT: %[[EXN:.*]] = call ptr @llvm.wasm.catch(i32 0)
|
||
|
|
; CHECK-NEXT: call void @llvm.wasm.landingpad.index(token %[[CATCHPAD]], i32 0)
|
||
|
|
; CHECK-NEXT: store i32 0, ptr @__wasm_lpad_context
|
||
|
|
; CHECK-NEXT: %[[LSDA:.*]] = call ptr @llvm.wasm.lsda()
|
||
|
|
; CHECK-NEXT: store ptr %[[LSDA]], ptr getelementptr inbounds ({ i32, ptr, i32 }, ptr @__wasm_lpad_context, i32 0, i32 1)
|
||
|
|
; CHECK-NEXT: call i32 @_Unwind_CallPersonality(ptr %[[EXN]]) {{.*}} [ "funclet"(token %[[CATCHPAD]]) ]
|
||
|
|
; CHECK-NEXT: %[[SELECTOR:.*]] = load i32, ptr getelementptr inbounds ({ i32, ptr, i32 }, ptr @__wasm_lpad_context, i32 0, i32 2)
|
||
|
|
; CHECK: icmp eq i32 %[[SELECTOR]]
|
||
|
|
|
||
|
|
catch: ; preds = %catch.start
|
||
|
|
%5 = call ptr @__cxa_begin_catch(ptr %2) [ "funclet"(token %1) ]
|
||
|
|
call void @__cxa_end_catch() [ "funclet"(token %1) ]
|
||
|
|
catchret from %1 to label %try.cont
|
||
|
|
; CHECK: catch:
|
||
|
|
; CHECK-NEXT: call ptr @__cxa_begin_catch(ptr %[[EXN]])
|
||
|
|
|
||
|
|
rethrow: ; preds = %catch.start
|
||
|
|
call void @llvm.wasm.rethrow() [ "funclet"(token %1) ]
|
||
|
|
unreachable
|
||
|
|
|
||
|
|
try.cont: ; preds = %entry, %catch
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Two try-catches.
|
||
|
|
; For the catchpad with a single 'catch (...)', only a wasm.catch() call should
|
||
|
|
; be generated after the catchpad; wasm.landingpad.index() and personality call
|
||
|
|
; should NOT be generated. For the other catchpad, the argument of
|
||
|
|
; wasm.landingpad.index() should be not 1 but 0.
|
||
|
|
;
|
||
|
|
; void foo();
|
||
|
|
; void test1() {
|
||
|
|
; try {
|
||
|
|
; foo();
|
||
|
|
; } catch (...) {
|
||
|
|
; }
|
||
|
|
; try {
|
||
|
|
; foo();
|
||
|
|
; } catch (int) {
|
||
|
|
; }
|
||
|
|
; }
|
||
|
|
define void @test1() personality ptr @__gxx_wasm_personality_v0 {
|
||
|
|
; CHECK-LABEL: @test1()
|
||
|
|
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 [ptr null]
|
||
|
|
%2 = call ptr @llvm.wasm.get.exception(token %1)
|
||
|
|
%3 = call i32 @llvm.wasm.get.ehselector(token %1)
|
||
|
|
%4 = call ptr @__cxa_begin_catch(ptr %2) [ "funclet"(token %1) ]
|
||
|
|
call void @__cxa_end_catch() [ "funclet"(token %1) ]
|
||
|
|
catchret from %1 to label %try.cont
|
||
|
|
; CHECK: catch.start:
|
||
|
|
; CHECK-NEXT: catchpad within %0 [ptr null]
|
||
|
|
; CHECK-NOT: call void @llvm.wasm.landingpad.index
|
||
|
|
; CHECK-NOT: store {{.*}} @__wasm_lpad_context
|
||
|
|
; CHECK-NOT: call ptr @llvm.wasm.lsda()
|
||
|
|
; CHECK-NOT: call i32 @_Unwind_CallPersonality
|
||
|
|
; CHECK-NOT: load {{.*}} @__wasm_lpad_context
|
||
|
|
|
||
|
|
try.cont: ; preds = %entry, %catch.start
|
||
|
|
invoke void @foo()
|
||
|
|
to label %try.cont7 unwind label %catch.dispatch2
|
||
|
|
|
||
|
|
catch.dispatch2: ; preds = %try.cont
|
||
|
|
%5 = catchswitch within none [label %catch.start3] unwind to caller
|
||
|
|
|
||
|
|
catch.start3: ; preds = %catch.dispatch2
|
||
|
|
%6 = catchpad within %5 [ptr @_ZTIi]
|
||
|
|
%7 = call ptr @llvm.wasm.get.exception(token %6)
|
||
|
|
%8 = call i32 @llvm.wasm.get.ehselector(token %6)
|
||
|
|
%9 = call i32 @llvm.eh.typeid.for(ptr @_ZTIi)
|
||
|
|
%matches = icmp eq i32 %8, %9
|
||
|
|
br i1 %matches, label %catch4, label %rethrow
|
||
|
|
; CHECK: catch.start3:
|
||
|
|
; CHECK: call void @llvm.wasm.landingpad.index(token %{{.+}}, i32 0)
|
||
|
|
|
||
|
|
catch4: ; preds = %catch.start3
|
||
|
|
%10 = call ptr @__cxa_begin_catch(ptr %7) [ "funclet"(token %6) ]
|
||
|
|
call void @__cxa_end_catch() [ "funclet"(token %6) ]
|
||
|
|
catchret from %6 to label %try.cont7
|
||
|
|
|
||
|
|
rethrow: ; preds = %catch.start3
|
||
|
|
call void @llvm.wasm.rethrow() [ "funclet"(token %6) ]
|
||
|
|
unreachable
|
||
|
|
|
||
|
|
try.cont7: ; preds = %try.cont, %catch4
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; PHI demotion test. Only the phi before catchswitch should be demoted; the phi
|
||
|
|
; before cleanuppad should NOT.
|
||
|
|
;
|
||
|
|
; void foo();
|
||
|
|
; int bar(int) noexcept;
|
||
|
|
; struct Temp {
|
||
|
|
; ~Temp() {}
|
||
|
|
; };
|
||
|
|
;
|
||
|
|
; void test2() {
|
||
|
|
; int num;
|
||
|
|
; try {
|
||
|
|
; Temp t;
|
||
|
|
; num = 1;
|
||
|
|
; foo();
|
||
|
|
; num = 2;
|
||
|
|
; foo();
|
||
|
|
; } catch (...) {
|
||
|
|
; bar(num);
|
||
|
|
; }
|
||
|
|
; try {
|
||
|
|
; foo();
|
||
|
|
; num = 1;
|
||
|
|
; foo();
|
||
|
|
; num = 2;
|
||
|
|
; } catch (...) {
|
||
|
|
; bar(num);
|
||
|
|
; }
|
||
|
|
; }
|
||
|
|
define void @test2() personality ptr @__gxx_wasm_personality_v0 {
|
||
|
|
; CHECK-LABEL: @test2
|
||
|
|
entry:
|
||
|
|
%t = alloca %struct.Temp, align 1
|
||
|
|
invoke void @foo()
|
||
|
|
to label %invoke.cont unwind label %ehcleanup
|
||
|
|
|
||
|
|
invoke.cont: ; preds = %entry
|
||
|
|
invoke void @foo()
|
||
|
|
to label %invoke.cont1 unwind label %ehcleanup
|
||
|
|
|
||
|
|
invoke.cont1: ; preds = %invoke.cont
|
||
|
|
%call = call ptr @_ZN4TempD2Ev(ptr %t)
|
||
|
|
br label %try.cont
|
||
|
|
|
||
|
|
ehcleanup: ; preds = %invoke.cont, %entry
|
||
|
|
%num.0 = phi i32 [ 2, %invoke.cont ], [ 1, %entry ]
|
||
|
|
%0 = cleanuppad within none []
|
||
|
|
%call2 = call ptr @_ZN4TempD2Ev(ptr %t) [ "funclet"(token %0) ]
|
||
|
|
cleanupret from %0 unwind label %catch.dispatch
|
||
|
|
; CHECK: ehcleanup:
|
||
|
|
; CHECK-NEXT: = phi
|
||
|
|
|
||
|
|
catch.dispatch: ; preds = %ehcleanup
|
||
|
|
%1 = catchswitch within none [label %catch.start] unwind to caller
|
||
|
|
|
||
|
|
catch.start: ; preds = %catch.dispatch
|
||
|
|
%2 = catchpad within %1 [ptr null]
|
||
|
|
%3 = call ptr @llvm.wasm.get.exception(token %2)
|
||
|
|
%4 = call i32 @llvm.wasm.get.ehselector(token %2)
|
||
|
|
%5 = call ptr @__cxa_begin_catch(ptr %3) [ "funclet"(token %2) ]
|
||
|
|
call void @bar(i32 %num.0) [ "funclet"(token %2) ]
|
||
|
|
call void @__cxa_end_catch() [ "funclet"(token %2) ]
|
||
|
|
catchret from %2 to label %try.cont
|
||
|
|
|
||
|
|
try.cont: ; preds = %catch.start, %invoke.cont1
|
||
|
|
invoke void @foo()
|
||
|
|
to label %invoke.cont3 unwind label %catch.dispatch5
|
||
|
|
|
||
|
|
invoke.cont3: ; preds = %try.cont
|
||
|
|
invoke void @foo()
|
||
|
|
to label %try.cont10 unwind label %catch.dispatch5
|
||
|
|
|
||
|
|
catch.dispatch5: ; preds = %invoke.cont3, %try.cont
|
||
|
|
%num.1 = phi i32 [ 2, %invoke.cont3 ], [ 1, %try.cont ]
|
||
|
|
%6 = catchswitch within none [label %catch.start6] unwind to caller
|
||
|
|
; CHECK: catch.dispatch5:
|
||
|
|
; CHECK-NOT: = phi
|
||
|
|
|
||
|
|
catch.start6: ; preds = %catch.dispatch5
|
||
|
|
%7 = catchpad within %6 [ptr null]
|
||
|
|
%8 = call ptr @llvm.wasm.get.exception(token %7)
|
||
|
|
%9 = call i32 @llvm.wasm.get.ehselector(token %7)
|
||
|
|
%10 = call ptr @__cxa_begin_catch(ptr %8) [ "funclet"(token %7) ]
|
||
|
|
call void @bar(i32 %num.1) [ "funclet"(token %7) ]
|
||
|
|
call void @__cxa_end_catch() [ "funclet"(token %7) ]
|
||
|
|
catchret from %7 to label %try.cont10
|
||
|
|
|
||
|
|
try.cont10: ; preds = %invoke.cont3, %catch.start6
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Tests if instructions after a call to @llvm.wasm.throw are deleted and the
|
||
|
|
; BB's dead children are deleted.
|
||
|
|
|
||
|
|
; CHECK-LABEL: @test3
|
||
|
|
define i32 @test3(i1 %b, ptr %p) {
|
||
|
|
entry:
|
||
|
|
br i1 %b, label %bb.true, label %bb.false
|
||
|
|
|
||
|
|
; CHECK: bb.true:
|
||
|
|
; CHECK-NEXT: call void @llvm.wasm.throw(i32 0, ptr %p)
|
||
|
|
; CHECK-NEXT: unreachable
|
||
|
|
bb.true: ; preds = %entry
|
||
|
|
call void @llvm.wasm.throw(i32 0, ptr %p)
|
||
|
|
br label %bb.true.0
|
||
|
|
|
||
|
|
; CHECK-NOT: bb.true.0
|
||
|
|
bb.true.0: ; preds = %bb.true
|
||
|
|
br label %merge
|
||
|
|
|
||
|
|
; CHECK: bb.false
|
||
|
|
bb.false: ; preds = %entry
|
||
|
|
br label %merge
|
||
|
|
|
||
|
|
; CHECK: merge
|
||
|
|
merge: ; preds = %bb.true.0, %bb.false
|
||
|
|
ret i32 0
|
||
|
|
}
|
||
|
|
|
||
|
|
declare void @foo()
|
||
|
|
declare void @bar(i32)
|
||
|
|
declare ptr @_ZN4TempD2Ev(ptr returned)
|
||
|
|
declare i32 @__gxx_wasm_personality_v0(...)
|
||
|
|
; Function Attrs: nounwind
|
||
|
|
declare ptr @llvm.wasm.get.exception(token) #0
|
||
|
|
; Function Attrs: nounwind
|
||
|
|
declare i32 @llvm.wasm.get.ehselector(token) #0
|
||
|
|
; Function Attrs: nounwind
|
||
|
|
declare i32 @llvm.eh.typeid.for(ptr) #0
|
||
|
|
; Function Attrs: noreturn
|
||
|
|
declare void @llvm.wasm.throw(i32, ptr) #1
|
||
|
|
; Function Attrs: noreturn
|
||
|
|
declare void @llvm.wasm.rethrow() #1
|
||
|
|
declare ptr @__cxa_begin_catch(ptr)
|
||
|
|
declare void @__cxa_end_catch()
|
||
|
|
declare void @_ZSt9terminatev()
|
||
|
|
|
||
|
|
attributes #0 = { nounwind }
|
||
|
|
attributes #1 = { noreturn }
|
||
|
|
|
||
|
|
; CHECK-DAG: declare void @llvm.wasm.landingpad.index(token, i32 immarg)
|
||
|
|
; CHECK-DAG: declare ptr @llvm.wasm.lsda()
|
||
|
|
; CHECK-DAG: declare i32 @_Unwind_CallPersonality(ptr)
|