1; RUN: llc -mtriple=i686-windows-msvc < %s | FileCheck %s
2
3; 32-bit catch-all has to use a filter function because that's how it saves the
4; exception code.
5
6@str = linkonce_odr unnamed_addr constant [27 x i8] c"GetExceptionCode(): 0x%lx\0A\00", align 1
7
8declare i32 @_except_handler3(...)
9declare void @crash()
10declare i32 @printf(i8* nocapture readonly, ...) nounwind
11declare i32 @llvm.eh.typeid.for(i8*)
12declare i8* @llvm.frameaddress(i32)
13declare i8* @llvm.localrecover(i8*, i8*, i32)
14declare void @llvm.localescape(...)
15declare i8* @llvm.x86.seh.recoverfp(i8*, i8*)
16
17define i32 @main() personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) {
18entry:
19  ; The EH code allocation is overaligned, triggering realignment.
20  %__exceptioncode = alloca i32, align 8
21  call void (...) @llvm.localescape(i32* %__exceptioncode)
22  invoke void @crash() #5
23          to label %__try.cont unwind label %lpad
24
25lpad:                                             ; preds = %entry
26  %0 = landingpad { i8*, i32 }
27          catch i8* bitcast (i32 ()* @"filt$main" to i8*)
28  %1 = extractvalue { i8*, i32 } %0, 1
29  %2 = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @"filt$main" to i8*)) #4
30  %matches = icmp eq i32 %1, %2
31  br i1 %matches, label %__except, label %eh.resume
32
33__except:                                         ; preds = %lpad
34  %3 = load i32, i32* %__exceptioncode, align 4
35  %call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @str, i32 0, i32 0), i32 %3) #4
36  br label %__try.cont
37
38__try.cont:                                       ; preds = %entry, %__except
39  ret i32 0
40
41eh.resume:                                        ; preds = %lpad
42  resume { i8*, i32 } %0
43}
44
45define internal i32 @"filt$main"() {
46entry:
47  %ebp = tail call i8* @llvm.frameaddress(i32 1)
48  %parentfp = tail call i8* @llvm.x86.seh.recoverfp(i8* bitcast (i32 ()* @main to i8*), i8* %ebp)
49  %code.i8 = tail call i8* @llvm.localrecover(i8* bitcast (i32 ()* @main to i8*), i8* %parentfp, i32 0)
50  %__exceptioncode = bitcast i8* %code.i8 to i32*
51  %info.addr = getelementptr inbounds i8, i8* %ebp, i32 -20
52  %0 = bitcast i8* %info.addr to i32***
53  %1 = load i32**, i32*** %0, align 4
54  %2 = load i32*, i32** %1, align 4
55  %3 = load i32, i32* %2, align 4
56  store i32 %3, i32* %__exceptioncode, align 4
57  ret i32 1
58}
59
60; Check that we can get the exception code from eax to the printf.
61
62; CHECK-LABEL: _main:
63; CHECK: Lmain$frame_escape_0 = [[code_offs:[-0-9]+]]
64; CHECK: Lmain$frame_escape_1 = [[reg_offs:[-0-9]+]]
65; CHECK: movl %esp, [[reg_offs]](%esi)
66; CHECK: movl $L__ehtable$main,
67;       EH state 0
68; CHECK: movl $0, 40(%esi)
69; CHECK: calll _crash
70; CHECK: retl
71; CHECK: # Block address taken
72;       Restore ESP
73; CHECK: movl -24(%ebp), %esp
74;       Restore ESI
75; CHECK: movl $Lmain$parent_frame_offset, %eax
76; CHECK: negl %eax
77; CHECK: leal -24(%ebp,%eax), %esi
78;       Restore EBP
79; CHECK: movl 12(%esi), %ebp    # 4-byte Reload
80;       EH state -1
81; CHECK: movl [[code_offs]](%esi), %[[code:[a-z]+]]
82; CHECK: movl $-1, 40(%esi)
83; CHECK-DAG: movl %[[code]], 4(%esp)
84; CHECK-DAG: movl $_str, (%esp)
85; CHECK: calll _printf
86
87; CHECK: .section .xdata,"dr"
88; CHECK: Lmain$parent_frame_offset = Lmain$frame_escape_1
89; CHECK: L__ehtable$main
90; CHECK-NEXT: .long -1
91; CHECK-NEXT: .long _filt$main
92; CHECK-NEXT: .long Ltmp{{[0-9]+}}
93
94; CHECK-LABEL: _filt$main:
95; CHECK: pushl %ebp
96; CHECK: movl %esp, %ebp
97; CHECK: movl (%ebp), %[[oldebp:[a-z]+]]
98; CHECK: movl -20(%[[oldebp]]), %[[ehinfo:[a-z]+]]
99; CHECK: movl (%[[ehinfo]]), %[[ehrec:[a-z]+]]
100; CHECK: movl (%[[ehrec]]), %[[ehcode:[a-z]+]]
101; CHECK: movl %[[ehcode]], {{.*}}(%{{.*}})
102