brintos

brintos / llvm-project-archived public Read only

0
0
Text · 3.1 KiB · bd51ca7 Raw
96 lines · plain
1; RUN: llc -stack-symbol-ordering=0 -mtriple=i686-windows-msvc < %s | FileCheck %s2 3; 32-bit catch-all has to use a filter function because that's how it saves the4; exception code.5 6@str = linkonce_odr unnamed_addr constant [27 x i8] c"GetExceptionCode(): 0x%lx\0A\00", align 17 8declare i32 @_except_handler3(...)9declare void @crash()10declare i32 @printf(ptr nocapture readonly, ...) nounwind11declare i32 @llvm.eh.typeid.for(ptr)12declare ptr @llvm.frameaddress(i32)13declare ptr @llvm.localrecover(ptr, ptr, i32)14declare void @llvm.localescape(...)15declare ptr @llvm.eh.recoverfp(ptr, ptr)16 17define i32 @main() personality ptr @_except_handler3 {18entry:19  %__exceptioncode = alloca i32, align 420  call void (...) @llvm.localescape(ptr %__exceptioncode)21  invoke void @crash() #522          to label %__try.cont unwind label %lpad23 24lpad:                                             ; preds = %entry25  %cs1 = catchswitch within none [label %__except] unwind to caller26 27__except:                                         ; preds = %lpad28  %p = catchpad within %cs1 [ptr @"filt$main"]29  %code = load i32, ptr %__exceptioncode, align 430  %call = call i32 (ptr, ...) @printf(ptr @str, i32 %code) #4 [ "funclet"(token %p) ]31  catchret from %p to label %__try.cont32 33__try.cont:                                       ; preds = %entry, %__except34  ret i32 035}36 37define internal i32 @"filt$main"() {38entry:39  %ebp = tail call ptr @llvm.frameaddress(i32 1)40  %parentfp = tail call ptr @llvm.eh.recoverfp(ptr @main, ptr %ebp)41  %code.i8 = tail call ptr @llvm.localrecover(ptr @main, ptr %parentfp, i32 0)42  %info.addr = getelementptr inbounds i8, ptr %ebp, i32 -2043  %0 = load ptr, ptr %info.addr, align 444  %1 = load ptr, ptr %0, align 445  %2 = load i32, ptr %1, align 446  store i32 %2, ptr %code.i8, align 447  ret i32 148}49 50; Check that we can get the exception code from eax to the printf.51 52; CHECK-LABEL: _main:53; CHECK: pushl %ebp54; CHECK: movl %esp, %ebp55;       Ensure that we push *all* the CSRs, since they are clobbered by the56;       __except block.57; CHECK: pushl %ebx58; CHECK: pushl %edi59; CHECK: pushl %esi60 61; CHECK: Lmain$frame_escape_0 = [[code_offs:[-0-9]+]]62; CHECK: movl %esp, [[reg_offs:[-0-9]+]](%ebp)63; CHECK: movl $L__ehtable$main,64;       EH state 065; CHECK: movl $0, -16(%ebp)66; CHECK: calll _crash67; CHECK: popl %esi68; CHECK: popl %edi69; CHECK: popl %ebx70; CHECK: retl71; CHECK: LBB0_[[lpbb:[0-9]+]]: # %__except{{$}}72;       stackrestore73; CHECK: movl -24(%ebp), %esp74;       EH state -175; CHECK: movl [[code_offs]](%ebp), %[[code:[a-z]+]]76; CHECK: pushl %[[code]]77; CHECK: pushl $_str78; CHECK: calll _printf79 80; CHECK: .section .xdata,"dr"81; CHECK: Lmain$parent_frame_offset = [[reg_offs]]82; CHECK: .p2align 283; CHECK: L__ehtable$main84; CHECK-NEXT: .long -185; CHECK-NEXT: .long _filt$main86; CHECK-NEXT: .long LBB0_[[lpbb]]87 88; CHECK-LABEL: _filt$main:89; CHECK: pushl %ebp90; CHECK: movl %esp, %ebp91; CHECK: movl (%ebp), %[[oldebp:[a-z]+]]92; CHECK: movl -20(%[[oldebp]]), %[[ehinfo:[a-z]+]]93; CHECK: movl (%[[ehinfo]]), %[[ehrec:[a-z]+]]94; CHECK: movl (%[[ehrec]]), %[[ehcode:[a-z]+]]95; CHECK: movl %[[ehcode]], {{.*}}(%{{.*}})96