| ; 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 i8* @llvm.frameaddress.p0i8(i32 immarg) |
| declare i8* @llvm.eh.recoverfp(i8*, i8*) |
| declare i8* @llvm.localrecover(i8*, i8*, i32 immarg) |
| declare dso_local i32 @_except_handler3(...) |
| declare void @llvm.localescape(...) |
| |
| define dso_local zeroext i1 @invokewrapper( |
| void ()* nocapture %Fn, |
| i1 zeroext %DumpStackAndCleanup, |
| i32* nocapture dereferenceable(4) %RetCode) |
| personality i32 (...)* @_except_handler3 { |
| entry: |
| %__exception_code = alloca i32, align 4 |
| call void (...) @llvm.localescape(i32* 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 [i8* bitcast (i32 ()* @filter to i8*)] |
| catchret from %1 to label %__except |
| |
| __except: ; preds = %__except.ret |
| %2 = load i32, i32* %__exception_code, align 4 |
| store i32 %2, i32* %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 i8* @llvm.frameaddress.p0i8(i32 1) |
| %1 = tail call i8* @llvm.eh.recoverfp(i8* bitcast (i1 (void ()*, i1, i32*)* @invokewrapper to i8*), i8* %0) |
| %2 = tail call i8* @llvm.localrecover(i8* bitcast (i1 (void ()*, i1, i32*)* @invokewrapper 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 { i32*, i8* }** |
| %5 = load { i32*, i8* }*, { i32*, i8* }** %4, align 4 |
| %6 = getelementptr inbounds { i32*, i8* }, { i32*, i8* }* %5, i32 0, i32 0 |
| %7 = load i32*, i32** %6, align 4 |
| %8 = load i32, i32* %7, align 4 |
| store i32 %8, i32* %__exception_code, align 4 |
| ret i32 1 |
| } |
