| ; RUN: llc < %s | FileCheck %s |
| |
| ; In PR44697, the register allocator inserted loads into the __except block |
| ; before the instructions that restore EBP and ESP back to what they should be. |
| ; Make sure they are the first instructions in the __except block. |
| |
| ; ModuleID = 't.cpp' |
| source_filename = "t.cpp" |
| target datalayout = "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:32-n8:16:32-a:0:32-S32" |
| target triple = "i386-pc-windows-msvc19.24.28315" |
| |
| declare ptr @llvm.frameaddress.p0(i32 immarg) |
| declare ptr @llvm.eh.recoverfp(ptr, ptr) |
| declare ptr @llvm.localrecover(ptr, ptr, i32 immarg) |
| declare dso_local i32 @_except_handler3(...) |
| declare void @llvm.localescape(...) |
| |
| define dso_local zeroext i1 @invokewrapper( |
| ptr nocapture %Fn, |
| i1 zeroext %DumpStackAndCleanup, |
| ptr nocapture dereferenceable(4) %RetCode) |
| personality ptr @_except_handler3 { |
| entry: |
| %__exception_code = alloca i32, align 4 |
| call void (...) @llvm.localescape(ptr nonnull %__exception_code) |
| invoke void %Fn() |
| to label %return unwind label %catch.dispatch |
| |
| catch.dispatch: ; preds = %entry |
| %0 = catchswitch within none [label %__except.ret] unwind to caller |
| |
| __except.ret: ; preds = %catch.dispatch |
| %1 = catchpad within %0 [ptr @filter] |
| catchret from %1 to label %__except |
| |
| __except: ; preds = %__except.ret |
| %2 = load i32, ptr %__exception_code, align 4 |
| store i32 %2, ptr %RetCode, align 4 |
| br label %return |
| |
| return: ; preds = %entry, %__except |
| %retval.0 = phi i1 [ false, %__except ], [ true, %entry ] |
| ret i1 %retval.0 |
| } |
| |
| ; CHECK-LABEL: _invokewrapper: # @invokewrapper |
| ; CHECK: calll *8(%ebp) |
| ; CHECK: LBB0_2: # %return |
| |
| ; CHECK: LBB0_1: # %__except.ret |
| ; CHECK-NEXT: movl -24(%ebp), %esp |
| ; CHECK-NEXT: addl $12, %ebp |
| |
| ; Function Attrs: nofree nounwind |
| define internal i32 @filter() { |
| entry: |
| %0 = tail call ptr @llvm.frameaddress.p0(i32 1) |
| %1 = tail call ptr @llvm.eh.recoverfp(ptr @invokewrapper, ptr %0) |
| %2 = tail call ptr @llvm.localrecover(ptr @invokewrapper, ptr %1, i32 0) |
| %3 = getelementptr inbounds i8, ptr %0, i32 -20 |
| %4 = load ptr, ptr %3, align 4 |
| %5 = getelementptr inbounds { ptr, ptr }, ptr %4, i32 0, i32 0 |
| %6 = load ptr, ptr %5, align 4 |
| %7 = load i32, ptr %6, align 4 |
| store i32 %7, ptr %2, align 4 |
| ret i32 1 |
| } |
