| ; RUN: llc < %s | FileCheck %s |
| |
| target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" |
| target triple = "i686-pc-windows-msvc" |
| |
| define void @try_except() #0 personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) { |
| entry: |
| %__exception_code = alloca i32, align 4 |
| call void (...) @llvm.localescape(i32* %__exception_code) |
| invoke void @f(i32 1) #3 |
| to label %invoke.cont unwind label %catch.dispatch |
| |
| catch.dispatch: ; preds = %entry |
| %cs1 = catchswitch within none [label %__except.ret] unwind to caller |
| |
| __except.ret: ; preds = %catch.dispatch |
| %0 = catchpad within %cs1 [i8* bitcast (i32 ()* @try_except_filter_catchall to i8*)] |
| catchret from %0 to label %__except |
| |
| __except: ; preds = %__except.ret |
| call void @f(i32 2) |
| br label %__try.cont |
| |
| __try.cont: ; preds = %__except, %invoke.cont |
| call void @f(i32 3) |
| ret void |
| |
| invoke.cont: ; preds = %entry |
| br label %__try.cont |
| } |
| |
| ; CHECK-LABEL: _try_except: |
| ; Store state #0 |
| ; CHECK: movl $0, -[[state:[0-9]+]](%ebp) |
| ; CHECK: pushl $1 |
| ; CHECK: calll _f |
| ; CHECK: movl $-1, -[[state]](%ebp) |
| ; CHECK: pushl $3 |
| ; CHECK: calll _f |
| ; CHECK: retl |
| |
| ; __except |
| ; CHECK: movl $-1, -[[state]](%ebp) |
| ; CHECK: pushl $2 |
| ; CHECK: calll _f |
| |
| ; CHECK: .section .xdata,"dr" |
| ; CHECK: L__ehtable$try_except: |
| ; CHECK: .long -1 # ToState |
| ; CHECK: .long _try_except_filter_catchall # Filter |
| ; CHECK: .long LBB0_1 |
| |
| define internal i32 @try_except_filter_catchall() #0 { |
| entry: |
| %0 = call i8* @llvm.frameaddress(i32 1) |
| %1 = call i8* @llvm.x86.seh.recoverfp(i8* bitcast (void ()* @try_except to i8*), i8* %0) |
| %2 = call i8* @llvm.localrecover(i8* bitcast (void ()* @try_except to i8*), i8* %1, i32 0) |
| %__exception_code = bitcast i8* %2 to i32* |
| %3 = getelementptr inbounds i8, i8* %0, i32 -20 |
| %4 = bitcast i8* %3 to i8** |
| %5 = load i8*, i8** %4, align 4 |
| %6 = bitcast i8* %5 to { i32*, i8* }* |
| %7 = getelementptr inbounds { i32*, i8* }, { i32*, i8* }* %6, i32 0, i32 0 |
| %8 = load i32*, i32** %7, align 4 |
| %9 = load i32, i32* %8, align 4 |
| store i32 %9, i32* %__exception_code, align 4 |
| ret i32 1 |
| } |
| |
| define void @nested_exceptions() #0 personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) { |
| entry: |
| %__exception_code = alloca i32, align 4 |
| call void (...) @llvm.localescape(i32* %__exception_code) |
| invoke void @crash() #3 |
| to label %__try.cont unwind label %catch.dispatch |
| |
| catch.dispatch: ; preds = %entry |
| %cs1 = catchswitch within none [label %__except.ret] unwind label %catch.dispatch.11 |
| |
| __except.ret: ; preds = %catch.dispatch |
| %0 = catchpad within %cs1 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)] |
| catchret from %0 to label %__try.cont |
| |
| __try.cont: ; preds = %entry, %__except.ret |
| invoke void @crash() #3 |
| to label %__try.cont.9 unwind label %catch.dispatch.5 |
| |
| catch.dispatch.5: ; preds = %__try.cont |
| %cs2 = catchswitch within none [label %__except.ret.7] unwind label %catch.dispatch.11 |
| |
| __except.ret.7: ; preds = %catch.dispatch.5 |
| %1 = catchpad within %cs2 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)] |
| catchret from %1 to label %__try.cont.9 |
| |
| __try.cont.9: ; preds = %__try.cont, %__except.ret.7 |
| invoke void @crash() #3 |
| to label %__try.cont.15 unwind label %catch.dispatch.11 |
| |
| catch.dispatch.11: ; preds = %catchendblock, %catchendblock.6, %__try.cont.9 |
| %cs3 = catchswitch within none [label %__except.ret.13] unwind label %catch.dispatch.17 |
| |
| __except.ret.13: ; preds = %catch.dispatch.11 |
| %2 = catchpad within %cs3 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)] |
| catchret from %2 to label %__try.cont.15 |
| |
| __try.cont.15: ; preds = %__try.cont.9, %__except.ret.13 |
| invoke void @crash() #3 |
| to label %__try.cont.35 unwind label %catch.dispatch.17 |
| |
| catch.dispatch.17: ; preds = %catchendblock.12, %__try.cont.15 |
| %cs4 = catchswitch within none [label %__except.ret.19] unwind to caller |
| |
| __except.ret.19: ; preds = %catch.dispatch.17 |
| %3 = catchpad within %cs4 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)] |
| catchret from %3 to label %__except.20 |
| |
| __except.20: ; preds = %__except.ret.19 |
| invoke void @crash() #3 |
| to label %__try.cont.27 unwind label %catch.dispatch.23 |
| |
| catch.dispatch.23: ; preds = %__except.20 |
| %cs5 = catchswitch within none [label %__except.ret.25] unwind to caller |
| |
| __except.ret.25: ; preds = %catch.dispatch.23 |
| %4 = catchpad within %cs5 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)] |
| catchret from %4 to label %__try.cont.27 |
| |
| __try.cont.27: ; preds = %__except.20, %__except.ret.25 |
| invoke void @crash() #3 |
| to label %__try.cont.35 unwind label %catch.dispatch.30 |
| |
| catch.dispatch.30: ; preds = %__try.cont.27 |
| %cs6 = catchswitch within none [label %__except.ret.32] unwind to caller |
| |
| __except.ret.32: ; preds = %catch.dispatch.30 |
| %5 = catchpad within %cs6 [i8* bitcast (i32 ()* @nested_exceptions_filter_catchall to i8*)] |
| catchret from %5 to label %__try.cont.35 |
| |
| __try.cont.35: ; preds = %__try.cont.15, %__try.cont.27, %__except.ret.32 |
| ret void |
| } |
| |
| ; This table is equivalent to the one produced by MSVC, even if it isn't in |
| ; quite the same order. |
| |
| ; CHECK-LABEL: _nested_exceptions: |
| ; CHECK: L__ehtable$nested_exceptions: |
| ; CHECK: .long -1 |
| ; CHECK: .long _nested_exceptions_filter_catchall |
| ; CHECK: .long LBB |
| ; CHECK: .long 0 |
| ; CHECK: .long _nested_exceptions_filter_catchall |
| ; CHECK: .long LBB |
| ; CHECK: .long 1 |
| ; CHECK: .long _nested_exceptions_filter_catchall |
| ; CHECK: .long LBB |
| ; CHECK: .long 1 |
| ; CHECK: .long _nested_exceptions_filter_catchall |
| ; CHECK: .long LBB |
| ; CHECK: .long -1 |
| ; CHECK: .long _nested_exceptions_filter_catchall |
| ; CHECK: .long LBB |
| ; CHECK: .long -1 |
| ; CHECK: .long _nested_exceptions_filter_catchall |
| ; CHECK: .long LBB |
| |
| declare void @crash() #0 |
| |
| define internal i32 @nested_exceptions_filter_catchall() #0 { |
| entry: |
| %0 = call i8* @llvm.frameaddress(i32 1) |
| %1 = call i8* @llvm.x86.seh.recoverfp(i8* bitcast (void ()* @nested_exceptions to i8*), i8* %0) |
| %2 = call i8* @llvm.localrecover(i8* bitcast (void ()* @nested_exceptions to i8*), i8* %1, i32 0) |
| %__exception_code3 = bitcast i8* %2 to i32* |
| %3 = getelementptr inbounds i8, i8* %0, i32 -20 |
| %4 = bitcast i8* %3 to i8** |
| %5 = load i8*, i8** %4, align 4 |
| %6 = bitcast i8* %5 to { i32*, i8* }* |
| %7 = getelementptr inbounds { i32*, i8* }, { i32*, i8* }* %6, i32 0, i32 0 |
| %8 = load i32*, i32** %7, align 4 |
| %9 = load i32, i32* %8, align 4 |
| store i32 %9, i32* %__exception_code3, align 4 |
| ret i32 1 |
| } |
| |
| define void @code_in_catchpad() #0 personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) { |
| entry: |
| invoke void @f(i32 1) #3 |
| to label %__except unwind label %catch.dispatch |
| |
| catch.dispatch: ; preds = %entry |
| %cs1 = catchswitch within none [label %__except.ret] unwind to caller |
| |
| __except.ret: ; preds = %catch.dispatch |
| %0 = catchpad within %cs1 [i8* bitcast (i32 ()* @try_except_filter_catchall to i8*)] |
| call void @f(i32 2) [ "funclet"(token %0) ] |
| catchret from %0 to label %__except |
| |
| __except: |
| ret void |
| } |
| |
| ; CHECK-LABEL: _code_in_catchpad: |
| ; CHECK: # %__except.ret |
| ; CHECK-NEXT: movl -24(%ebp), %esp |
| ; CHECK-NEXT: addl $12, %ebp |
| ; CHECK-NEXT: movl $-1, -16(%ebp) |
| ; CHECK-NEXT: pushl $2 |
| ; CHECK-NEXT: calll _f |
| |
| |
| ; Function Attrs: nounwind readnone |
| declare i8* @llvm.frameaddress(i32) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare i8* @llvm.x86.seh.recoverfp(i8*, i8*) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare i8* @llvm.localrecover(i8*, i8*, i32) #1 |
| |
| declare void @f(i32) #0 |
| |
| declare i32 @_except_handler3(...) |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.localescape(...) #2 |
| |
| attributes #0 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { nounwind readnone } |
| attributes #2 = { nounwind } |
| attributes #3 = { noinline } |
