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llvm-project/llvm/test/CodeGen/WinEH/cppeh-catch-unwind.ll

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; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
; This test was generated from the following source:
;
; void test() {
; try {
; SomeClass obj;
; may_throw();
; try {
; may_throw();
; } catch (int) {
; handle_exception();
; }
; } catch (int) {
; handle_exception();
; }
; }
;
; The code above was compiled with the -O2 option.
; ModuleID = 'catch-unwind.cpp'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
%class.SomeClass = type { i8 }
$"\01??_R0H@8" = comdat any
@"\01??_7type_info@@6B@" = external constant i8*
@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
; CHECK-LABEL: define void @"\01?test@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
; CHECK: entry:
; CHECK: [[OBJ_PTR:\%.+]] = alloca %class.SomeClass
; CHECK: [[TMP0:\%.+]] = alloca i32, align 4
; CHECK: [[TMP1:\%.+]] = alloca i32, align 4
; CHECK: call void (...) @llvm.localescape(i32* [[TMP1]], %class.SomeClass* [[OBJ_PTR]], i32* [[TMP0]])
; CHECK: %call = invoke %class.SomeClass* @"\01??0SomeClass@@QEAA@XZ"(%class.SomeClass* %obj)
; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]*]]
; Function Attrs: uwtable
define void @"\01?test@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
%obj = alloca %class.SomeClass, align 1
%0 = alloca i32, align 4
%1 = alloca i32, align 4
%call = invoke %class.SomeClass* @"\01??0SomeClass@@QEAA@XZ"(%class.SomeClass* %obj)
to label %invoke.cont unwind label %lpad
; CHECK: invoke.cont:
; CHECK: invoke void @"\01?may_throw@@YAXXZ"()
; CHECK: to label %invoke.cont2 unwind label %[[LPAD1_LABEL:lpad[0-9]*]]
invoke.cont: ; preds = %entry
invoke void @"\01?may_throw@@YAXXZ"()
to label %invoke.cont2 unwind label %lpad1
; CHECK: invoke.cont2:
; CHECK: invoke void @"\01?may_throw@@YAXXZ"()
; CHECK: to label %try.cont unwind label %[[LPAD3_LABEL:lpad[0-9]*]]
invoke.cont2: ; preds = %invoke.cont
invoke void @"\01?may_throw@@YAXXZ"()
to label %try.cont unwind label %lpad3
; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
; CHECK: [[LPAD_VAL:\%.+]] = landingpad { i8*, i32 }
; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
; CHECK-NEXT: [[RECOVER:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch")
; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %try.cont15]
lpad: ; preds = %entry
%2 = landingpad { i8*, i32 }
catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
%3 = extractvalue { i8*, i32 } %2, 0
%4 = extractvalue { i8*, i32 } %2, 1
br label %catch.dispatch7
; CHECK: [[LPAD1_LABEL]]:{{[ ]+}}; preds = %invoke.cont
; CHECK: [[LPAD1_VAL:\%.+]] = landingpad { i8*, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
; CHECK-NEXT: [[RECOVER1:\%.+]] = call i8* (...) @llvm.eh.actions(i32 0, void (i8*, i8*)* @"\01?test@@YAXXZ.cleanup", i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch")
; CHECK-NEXT: indirectbr i8* [[RECOVER1]], [label %try.cont15]
lpad1: ; preds = %invoke.cont
%5 = landingpad { i8*, i32 }
cleanup
catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
%6 = extractvalue { i8*, i32 } %5, 0
%7 = extractvalue { i8*, i32 } %5, 1
br label %ehcleanup
; CHECK: [[LPAD3_LABEL]]:{{[ ]+}}; preds = %invoke.cont2
; CHECK: [[LPAD3_VAL:\%.+]] = landingpad { i8*, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
; CHECK-NEXT: [[RECOVER3:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch.1", i32 0, void (i8*, i8*)* @"\01?test@@YAXXZ.cleanup")
; CHECK-NEXT: indirectbr i8* [[RECOVER3]], [label %try.cont, label %try.cont15]
lpad3: ; preds = %invoke.cont2
%8 = landingpad { i8*, i32 }
cleanup
catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
%9 = extractvalue { i8*, i32 } %8, 0
%10 = extractvalue { i8*, i32 } %8, 1
%11 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
%matches = icmp eq i32 %10, %11
br i1 %matches, label %catch, label %ehcleanup
; CHECK-NOT: catch:
catch: ; preds = %lpad3
%12 = bitcast i32* %0 to i8*
call void @llvm.eh.begincatch(i8* %9, i8* %12) #3
invoke void @"\01?handle_exception@@YAXXZ"()
to label %invoke.cont6 unwind label %lpad5
; CHECK-NOT: invoke.cont6:
invoke.cont6: ; preds = %catch
call void @llvm.eh.endcatch() #3
br label %try.cont
try.cont: ; preds = %invoke.cont2, %invoke.cont6
call void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass* %obj) #3
br label %try.cont15
; CHECK-NOT: lpad5:
lpad5: ; preds = %catch
%13 = landingpad { i8*, i32 }
cleanup
catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
%14 = extractvalue { i8*, i32 } %13, 0
%15 = extractvalue { i8*, i32 } %13, 1
call void @llvm.eh.endcatch() #3
br label %ehcleanup
; CHECK-NOT: ehcleanup
ehcleanup: ; preds = %lpad5, %lpad3, %lpad1
%exn.slot.0 = phi i8* [ %14, %lpad5 ], [ %9, %lpad3 ], [ %6, %lpad1 ]
%ehselector.slot.0 = phi i32 [ %15, %lpad5 ], [ %10, %lpad3 ], [ %7, %lpad1 ]
call void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass* %obj) #3
br label %catch.dispatch7
; CHECK-NOT: catch.dispatch7:
catch.dispatch7: ; preds = %ehcleanup, %lpad
%exn.slot.1 = phi i8* [ %exn.slot.0, %ehcleanup ], [ %3, %lpad ]
%ehselector.slot.1 = phi i32 [ %ehselector.slot.0, %ehcleanup ], [ %4, %lpad ]
%16 = call i32 @llvm.eh.typeid.for(i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)) #3
%matches9 = icmp eq i32 %ehselector.slot.1, %16
br i1 %matches9, label %catch10, label %eh.resume
; CHECK-NOT: catch10:
catch10: ; preds = %catch.dispatch7
%17 = bitcast i32* %1 to i8*
call void @llvm.eh.begincatch(i8* %exn.slot.1, i8* %17) #3
call void @"\01?handle_exception@@YAXXZ"()
br label %invoke.cont13
; CHECK-NOT: invoke.cont13:
invoke.cont13: ; preds = %catch10
call void @llvm.eh.endcatch() #3
br label %try.cont15
try.cont15: ; preds = %invoke.cont13, %try.cont
ret void
; CHECK-NOT: eh.resume
eh.resume: ; preds = %catch.dispatch7
%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.1, 0
%lpad.val18 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.1, 1
resume { i8*, i32 } %lpad.val18
; CHECK: }
}
; CHECK-LABEL: define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*)
; CHECK: entry:
; CHECK: [[RECOVER_TMP1:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0)
; CHECK: [[TMP1_PTR:\%.+]] = bitcast i8* [[RECOVER_TMP1]] to i32*
; CHECK: call void @"\01?handle_exception@@YAXXZ"()
; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont15)
; CHECK: }
; CHECK-LABEL: define internal void @"\01?test@@YAXXZ.cleanup"(i8*, i8*)
; CHECK: entry:
; CHECK: [[RECOVER_OBJ:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 1)
; CHECK: [[OBJ_PTR:\%.+]] = bitcast i8* %obj.i8 to %class.SomeClass*
; CHECK: call void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass* [[OBJ_PTR]])
; CHECK: ret void
; CHECK: }
; CHECK-LABEL: define internal i8* @"\01?test@@YAXXZ.catch.1"(i8*, i8*)
; CHECK: entry:
; CHECK: [[RECOVER_TMP0:\%.+]] = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 2)
; CHECK: [[TMP0_PTR:\%.+]] = bitcast i8* [[RECOVER_TMP0]] to i32*
; CHECK: invoke void @"\01?handle_exception@@YAXXZ"()
; CHECK: to label %invoke.cont6 unwind label %[[LPAD5_LABEL:lpad[0-9]+]]
;
; CHECK: invoke.cont6: ; preds = %entry
; CHECK: ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont)
;
; CHECK: [[LPAD5_LABEL]]:{{[ ]+}}; preds = %entry
; CHECK: [[LPAD5_VAL:\%.+]] = landingpad { i8*, i32 }
; CHECK: cleanup
; CHECK: catch i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*)
; CHECK: }
declare %class.SomeClass* @"\01??0SomeClass@@QEAA@XZ"(%class.SomeClass* returned) #1
declare i32 @__CxxFrameHandler3(...)
declare void @"\01?may_throw@@YAXXZ"() #1
; Function Attrs: nounwind readnone
declare i32 @llvm.eh.typeid.for(i8*) #2
; Function Attrs: nounwind
declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #3
declare void @"\01?handle_exception@@YAXXZ"() #1
; Function Attrs: nounwind
declare void @llvm.eh.endcatch() #3
; Function Attrs: nounwind
declare void @"\01??1SomeClass@@QEAA@XZ"(%class.SomeClass*) #4
attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { nounwind readnone }
attributes #3 = { nounwind }
attributes #4 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"PIC Level", i32 2}
!1 = !{!"clang version 3.7.0 (trunk 232069) (llvm/trunk 232070)"}
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