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 8 declare i32 @_except_handler3(...) 9 declare void @crash() 10 declare i32 @printf(i8* nocapture readonly, ...) nounwind 11 declare i32 @llvm.eh.typeid.for(i8*) 12 declare i8* @llvm.frameaddress(i32) 13 declare i8* @llvm.localrecover(i8*, i8*, i32) 14 declare void @llvm.localescape(...) 15 declare i8* @llvm.x86.seh.recoverfp(i8*, i8*) 16 17 define i32 @main() personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) { 18 entry: 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 25 lpad: ; preds = %entry 26 %cs1 = catchswitch within none [label %__except] unwind to caller 27 28 __except: ; preds = %lpad 29 %p = catchpad within %cs1 [i8* bitcast (i32 ()* @"filt$main" to i8*)] 30 %code = load i32, i32* %__exceptioncode, align 4 31 %call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @str, i32 0, i32 0), i32 %code) #4 [ "funclet"(token %p) ] 32 catchret from %p to label %__try.cont 33 34 __try.cont: ; preds = %entry, %__except 35 ret i32 0 36 } 37 38 define internal i32 @"filt$main"() { 39 entry: 40 %ebp = tail call i8* @llvm.frameaddress(i32 1) 41 %parentfp = tail call i8* @llvm.x86.seh.recoverfp(i8* bitcast (i32 ()* @main to i8*), i8* %ebp) 42 %code.i8 = tail call i8* @llvm.localrecover(i8* bitcast (i32 ()* @main to i8*), i8* %parentfp, i32 0) 43 %__exceptioncode = bitcast i8* %code.i8 to i32* 44 %info.addr = getelementptr inbounds i8, i8* %ebp, i32 -20 45 %0 = bitcast i8* %info.addr to i32*** 46 %1 = load i32**, i32*** %0, align 4 47 %2 = load i32*, i32** %1, align 4 48 %3 = load i32, i32* %2, align 4 49 store i32 %3, i32* %__exceptioncode, align 4 50 ret i32 1 51 } 52 53 ; Check that we can get the exception code from eax to the printf. 54 55 ; CHECK-LABEL: _main: 56 ; CHECK: Lmain$frame_escape_0 = [[code_offs:[-0-9]+]] 57 ; CHECK: movl %esp, [[reg_offs:[-0-9]+]](%esi) 58 ; CHECK: movl $L__ehtable$main, 59 ; EH state 0 60 ; CHECK: movl $0, 40(%esi) 61 ; CHECK: calll _crash 62 ; CHECK: retl 63 ; CHECK: LBB0_[[lpbb:[0-9]+]]: # %__except 64 ; Restore ESP 65 ; CHECK: movl -24(%ebp), %esp 66 ; Restore ESI 67 ; CHECK: leal -44(%ebp), %esi 68 ; Restore EBP 69 ; CHECK: movl 12(%esi), %ebp 70 ; CHECK: movl [[code_offs]](%esi), %[[code:[a-z]+]] 71 ; CHECK-DAG: movl %[[code]], 4(%esp) 72 ; CHECK-DAG: movl $_str, (%esp) 73 ; CHECK: calll _printf 74 75 ; CHECK: .section .xdata,"dr" 76 ; CHECK: Lmain$parent_frame_offset = [[reg_offs]] 77 ; CHECK: L__ehtable$main 78 ; CHECK-NEXT: .long -1 79 ; CHECK-NEXT: .long _filt$main 80 ; CHECK-NEXT: .long LBB0_[[lpbb]] 81 82 ; CHECK-LABEL: _filt$main: 83 ; CHECK: pushl %ebp 84 ; CHECK: movl %esp, %ebp 85 ; CHECK: movl (%ebp), %[[oldebp:[a-z]+]] 86 ; CHECK: movl -20(%[[oldebp]]), %[[ehinfo:[a-z]+]] 87 ; CHECK: movl (%[[ehinfo]]), %[[ehrec:[a-z]+]] 88 ; CHECK: movl (%[[ehrec]]), %[[ehcode:[a-z]+]] 89 ; CHECK: movl %[[ehcode]], {{.*}}(%{{.*}}) 90
