forked from OSchip/llvm-project
98 lines
3.3 KiB
LLVM
98 lines
3.3 KiB
LLVM
; RUN: llc -mtriple=i686-windows-msvc < %s | FileCheck %s
|
|
|
|
; 32-bit catch-all has to use a filter function because that's how it saves the
|
|
; exception code.
|
|
|
|
@str = linkonce_odr unnamed_addr constant [27 x i8] c"GetExceptionCode(): 0x%lx\0A\00", align 1
|
|
|
|
declare i32 @_except_handler3(...)
|
|
declare void @crash()
|
|
declare i32 @printf(i8* nocapture readonly, ...) nounwind
|
|
declare i32 @llvm.eh.typeid.for(i8*)
|
|
declare i8* @llvm.frameaddress(i32)
|
|
declare i8* @llvm.localrecover(i8*, i8*, i32)
|
|
declare void @llvm.localescape(...)
|
|
declare i8* @llvm.x86.seh.recoverfp(i8*, i8*)
|
|
|
|
define i32 @main() personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) {
|
|
entry:
|
|
%__exceptioncode = alloca i32, align 4
|
|
call void (...) @llvm.localescape(i32* %__exceptioncode)
|
|
invoke void @crash() #5
|
|
to label %__try.cont unwind label %lpad
|
|
|
|
lpad: ; preds = %entry
|
|
%cs1 = catchswitch within none [label %__except] unwind to caller
|
|
|
|
__except: ; preds = %lpad
|
|
%p = catchpad within %cs1 [i8* bitcast (i32 ()* @"filt$main" to i8*)]
|
|
%code = load i32, i32* %__exceptioncode, align 4
|
|
%call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @str, i32 0, i32 0), i32 %code) #4 [ "funclet"(token %p) ]
|
|
catchret from %p to label %__try.cont
|
|
|
|
__try.cont: ; preds = %entry, %__except
|
|
ret i32 0
|
|
}
|
|
|
|
define internal i32 @"filt$main"() {
|
|
entry:
|
|
%ebp = tail call i8* @llvm.frameaddress(i32 1)
|
|
%parentfp = tail call i8* @llvm.x86.seh.recoverfp(i8* bitcast (i32 ()* @main to i8*), i8* %ebp)
|
|
%code.i8 = tail call i8* @llvm.localrecover(i8* bitcast (i32 ()* @main to i8*), i8* %parentfp, i32 0)
|
|
%__exceptioncode = bitcast i8* %code.i8 to i32*
|
|
%info.addr = getelementptr inbounds i8, i8* %ebp, i32 -20
|
|
%0 = bitcast i8* %info.addr to i32***
|
|
%1 = load i32**, i32*** %0, align 4
|
|
%2 = load i32*, i32** %1, align 4
|
|
%3 = load i32, i32* %2, align 4
|
|
store i32 %3, i32* %__exceptioncode, align 4
|
|
ret i32 1
|
|
}
|
|
|
|
; Check that we can get the exception code from eax to the printf.
|
|
|
|
; CHECK-LABEL: _main:
|
|
; CHECK: pushl %ebp
|
|
; CHECK: movl %esp, %ebp
|
|
; Ensure that we push *all* the CSRs, since they are clobbered by the
|
|
; __except block.
|
|
; CHECK: pushl %ebx
|
|
; CHECK: pushl %edi
|
|
; CHECK: pushl %esi
|
|
|
|
; CHECK: Lmain$frame_escape_0 = [[code_offs:[-0-9]+]]
|
|
; CHECK: movl %esp, [[reg_offs:[-0-9]+]](%ebp)
|
|
; CHECK: movl $L__ehtable$main,
|
|
; EH state 0
|
|
; CHECK: movl $0, -16(%ebp)
|
|
; CHECK: calll _crash
|
|
; CHECK: popl %esi
|
|
; CHECK: popl %edi
|
|
; CHECK: popl %ebx
|
|
; CHECK: retl
|
|
; CHECK: LBB0_[[lpbb:[0-9]+]]: # %__except{{$}}
|
|
; stackrestore
|
|
; CHECK: movl -24(%ebp), %esp
|
|
; EH state -1
|
|
; CHECK: movl [[code_offs]](%ebp), %[[code:[a-z]+]]
|
|
; CHECK-DAG: movl %[[code]], 4(%esp)
|
|
; CHECK-DAG: movl $_str, (%esp)
|
|
; CHECK: calll _printf
|
|
|
|
; CHECK: .section .xdata,"dr"
|
|
; CHECK: Lmain$parent_frame_offset = [[reg_offs]]
|
|
; CHECK: .align 4
|
|
; CHECK: L__ehtable$main
|
|
; CHECK-NEXT: .long -1
|
|
; CHECK-NEXT: .long _filt$main
|
|
; CHECK-NEXT: .long LBB0_[[lpbb]]
|
|
|
|
; CHECK-LABEL: _filt$main:
|
|
; CHECK: pushl %ebp
|
|
; CHECK: movl %esp, %ebp
|
|
; CHECK: movl (%ebp), %[[oldebp:[a-z]+]]
|
|
; CHECK: movl -20(%[[oldebp]]), %[[ehinfo:[a-z]+]]
|
|
; CHECK: movl (%[[ehinfo]]), %[[ehrec:[a-z]+]]
|
|
; CHECK: movl (%[[ehrec]]), %[[ehcode:[a-z]+]]
|
|
; CHECK: movl %[[ehcode]], {{.*}}(%{{.*}})
|