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llvm-project/llvm/test/CodeGen/X86/win32-eh-states.ll

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; RUN: llc -mtriple=i686-pc-windows-msvc < %s | FileCheck %s --check-prefix=X86
; RUN: llc -mtriple=x86_64-pc-windows-msvc < %s | FileCheck %s --check-prefix=X64
; Based on this source:
; extern "C" void may_throw(int);
; void f() {
; try {
; may_throw(1);
; try {
; may_throw(2);
; } catch (int) {
; may_throw(3);
; }
; } catch (int) {
; may_throw(4);
; }
; }
%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
%eh.CatchHandlerType = type { i32, i8* }
declare void @may_throw(i32)
declare i32 @__CxxFrameHandler3(...)
declare void @llvm.eh.begincatch(i8*, i8*)
declare void @llvm.eh.endcatch()
declare i32 @llvm.eh.typeid.for(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
@llvm.eh.handlertype.H.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata"
define void @f() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
entry:
invoke void @may_throw(i32 1)
to label %invoke.cont unwind label %lpad.1
invoke.cont: ; preds = %entry
invoke void @may_throw(i32 2)
to label %try.cont.9 unwind label %lpad
try.cont.9: ; preds = %invoke.cont.3, %invoke.cont, %catch.7
ret void
lpad: ; preds = %catch, %entry
%cs1 = catchswitch within none [label %catch] unwind label %lpad.1
catch: ; preds = %lpad.1
%p1 = catchpad within %cs1 [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i8* null]
invoke void @may_throw(i32 3) [ "funclet"(token %p1) ]
to label %invoke.cont.3 unwind label %lpad.1
invoke.cont.3: ; preds = %catch
catchret from %p1 to label %try.cont.9
lpad.1: ; preds = %invoke.cont
%cs2 = catchswitch within none [label %catch.7] unwind to caller
catch.7:
%p2 = catchpad within %cs2 [%rtti.TypeDescriptor2* @"\01??_R0H@8", i32 0, i8* null]
call void @may_throw(i32 4) [ "funclet"(token %p2) ]
catchret from %p2 to label %try.cont.9
}
; X86-LABEL: _f:
; X86: movl $-1, [[state:[-0-9]+]](%ebp)
; X86: movl $___ehhandler$f, {{.*}}
;
; X86: movl $0, [[state]](%ebp)
; X86: pushl $1
; X86: calll _may_throw
;
; X86: movl $1, [[state]](%ebp)
; X86: pushl $2
; X86: calll _may_throw
;
; X86: movl $2, [[state]](%ebp)
; X86: pushl $3
; X86: calll _may_throw
;
; X86: movl $3, [[state]](%ebp)
; X86: pushl $4
; X86: calll _may_throw
; X64-LABEL: f:
; X64-LABEL: $ip2state$f:
; X64-NEXT: .long .Lfunc_begin0@IMGREL
; X64-NEXT: .long -1
; X64-NEXT: .long .Ltmp{{.*}}@IMGREL+1
; X64-NEXT: .long 0
; X64-NEXT: .long .Ltmp{{.*}}@IMGREL+1
; X64-NEXT: .long 1
; X64-NEXT: .long .Ltmp{{.*}}@IMGREL+1
; X64-NEXT: .long -1
; X64-NEXT: .long "?catch${{.*}}@?0?f@4HA"@IMGREL
; X64-NEXT: .long 2
; X64-NEXT: .long "?catch${{.*}}@?0?f@4HA"@IMGREL
; X64-NEXT: .long 3
; Based on this source:
; extern "C" void may_throw(int);
; struct S { ~S(); };
; void g() {
; S x;
; try {
; may_throw(-1);
; } catch (...) {
; may_throw(0);
; {
; S y;
; may_throw(1);
; }
; may_throw(2);
; }
; }
%struct.S = type { i8 }
declare void @"\01??1S@@QEAA@XZ"(%struct.S*)
define void @g() personality i32 (...)* @__CxxFrameHandler3 {
entry:
%x = alloca %struct.S, align 1
%y = alloca %struct.S, align 1
invoke void @may_throw(i32 -1)
to label %unreachable unwind label %catch.dispatch
catch.dispatch: ; preds = %entry
%0 = catchswitch within none [label %catch] unwind label %ehcleanup5
catch: ; preds = %catch.dispatch
%1 = catchpad within %0 [i8* null, i32 64, i8* null]
invoke void @may_throw(i32 0) [ "funclet"(token %1) ]
to label %invoke.cont unwind label %ehcleanup5
invoke.cont: ; preds = %catch
invoke void @may_throw(i32 1) [ "funclet"(token %1) ]
to label %invoke.cont2 unwind label %ehcleanup
invoke.cont2: ; preds = %invoke.cont
invoke void @"\01??1S@@QEAA@XZ"(%struct.S* nonnull %y) [ "funclet"(token %1) ]
to label %invoke.cont3 unwind label %ehcleanup5
invoke.cont3: ; preds = %invoke.cont2
invoke void @may_throw(i32 2) [ "funclet"(token %1) ]
to label %invoke.cont4 unwind label %ehcleanup5
invoke.cont4: ; preds = %invoke.cont3
catchret from %1 to label %try.cont
try.cont: ; preds = %invoke.cont4
call void @"\01??1S@@QEAA@XZ"(%struct.S* nonnull %x)
ret void
ehcleanup: ; preds = %invoke.cont
%2 = cleanuppad within %1 []
call void @"\01??1S@@QEAA@XZ"(%struct.S* nonnull %y) [ "funclet"(token %2) ]
cleanupret from %2 unwind label %ehcleanup5
ehcleanup5: ; preds = %invoke.cont2, %invoke.cont3, %ehcleanup, %catch, %catch.dispatch
%3 = cleanuppad within none []
call void @"\01??1S@@QEAA@XZ"(%struct.S* nonnull %x) [ "funclet"(token %3) ]
cleanupret from %3 unwind to caller
unreachable: ; preds = %entry
unreachable
}
; X86-LABEL: _g:
; X86: movl $-1, [[state:[-0-9]+]](%ebp)
; X86: movl $___ehhandler$g, {{.*}}
;
; X86: movl $1, [[state]](%ebp)
; X86: pushl $-1
; X86: calll _may_throw
;
; X86: movl $2, [[state]](%ebp)
; X86: pushl $0
; X86: calll _may_throw
;
; X86: movl $3, [[state]](%ebp)
; X86: pushl $1
; X86: calll _may_throw
;
; X86: movl $2, [[state]](%ebp)
; X86: pushl $2
; X86: calll _may_throw
; X64-LABEL: g:
; X64-LABEL: $ip2state$g:
; X64-NEXT: .long .Lfunc_begin1@IMGREL
; X64-NEXT: .long -1
; X64-NEXT: .long .Ltmp{{.*}}@IMGREL+1
; X64-NEXT: .long 1
; X64-NEXT: .long .Ltmp{{.*}}@IMGREL+1
; X64-NEXT: .long -1
; X64-NEXT: .long "?catch${{.*}}@?0?g@4HA"@IMGREL
; X64-NEXT: .long 2
; X64-NEXT: .long .Ltmp{{.*}}@IMGREL+1
; X64-NEXT: .long 3
; X64-NEXT: .long .Ltmp{{.*}}@IMGREL+1
; X64-NEXT: .long 2
; X86: .safeseh ___ehhandler$f
; X86: .safeseh ___ehhandler$g
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