#include "clang/AST/StmtCXX.h"
#include "clang/AST/StmtObjC.h"
#include "clang/AST/StmtVisitor.h"
-#include "clang/Basic/TargetBuiltins.h"
#include "llvm/IR/CallSite.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/IntrinsicInst.h"
}
void CodeGenFunction::EmitSEHTryStmt(const SEHTryStmt &S) {
+ // FIXME: Implement SEH on other architectures.
+ const llvm::Triple &T = CGM.getTarget().getTriple();
+ if (T.getArch() != llvm::Triple::x86_64 ||
+ !T.isKnownWindowsMSVCEnvironment()) {
+ ErrorUnsupported(&S, "__try statement");
+ return;
+ }
+
EnterSEHTryStmt(S);
{
JumpDest TryExit = getJumpDestInCurrentScope("__try.__leave");
void Emit(CodeGenFunction &CGF, Flags F) override {
ASTContext &Context = CGF.getContext();
- CodeGenModule &CGM = CGF.CGM;
+ QualType ArgTys[2] = {Context.UnsignedCharTy, Context.VoidPtrTy};
+ FunctionProtoType::ExtProtoInfo EPI;
+ const auto *FTP = cast<FunctionType>(
+ Context.getFunctionType(Context.VoidTy, ArgTys, EPI));
CallArgList Args;
-
- // Compute the two argument values.
- QualType ArgTys[2] = {Context.UnsignedCharTy, Context.VoidPtrTy};
- llvm::Value *FrameAddr = CGM.getIntrinsic(llvm::Intrinsic::frameaddress);
- llvm::Value *FP =
- CGF.Builder.CreateCall(FrameAddr, {CGF.Builder.getInt32(0)});
llvm::Value *IsForEH =
llvm::ConstantInt::get(CGF.ConvertType(ArgTys[0]), F.isForEHCleanup());
Args.add(RValue::get(IsForEH), ArgTys[0]);
+
+ CodeGenModule &CGM = CGF.CGM;
+ llvm::Value *Zero = llvm::ConstantInt::get(CGM.Int32Ty, 0);
+ llvm::Value *FrameAddr = CGM.getIntrinsic(llvm::Intrinsic::frameaddress);
+ llvm::Value *FP = CGF.Builder.CreateCall(FrameAddr, Zero);
Args.add(RValue::get(FP), ArgTys[1]);
- // Arrange a two-arg function info and type.
- FunctionProtoType::ExtProtoInfo EPI;
- const auto *FPT = cast<FunctionProtoType>(
- Context.getFunctionType(Context.VoidTy, ArgTys, EPI));
const CGFunctionInfo &FnInfo =
- CGM.getTypes().arrangeFreeFunctionCall(Args, FPT,
- /*chainCall=*/false);
-
+ CGM.getTypes().arrangeFreeFunctionCall(Args, FTP, /*chainCall=*/false);
CGF.EmitCall(FnInfo, OutlinedFinally, ReturnValueSlot(), Args);
}
};
CodeGenFunction &ParentCGF;
const VarDecl *ParentThis;
SmallVector<const VarDecl *, 4> Captures;
- llvm::Value *SEHCodeSlot = nullptr;
CaptureFinder(CodeGenFunction &ParentCGF, const VarDecl *ParentThis)
: ParentCGF(ParentCGF), ParentThis(ParentThis) {}
- // Return true if we need to do any capturing work.
- bool foundCaptures() {
- return !Captures.empty() || SEHCodeSlot;
- }
-
void Visit(const Stmt *S) {
// See if this is a capture, then recurse.
ConstStmtVisitor<CaptureFinder>::Visit(S);
void VisitCXXThisExpr(const CXXThisExpr *E) {
Captures.push_back(ParentThis);
}
-
- void VisitCallExpr(const CallExpr *E) {
- // We only need to add parent frame allocations for these builtins in x86.
- if (ParentCGF.getTarget().getTriple().getArch() != llvm::Triple::x86)
- return;
-
- unsigned ID = E->getBuiltinCallee();
- switch (ID) {
- case Builtin::BI__exception_code:
- case Builtin::BI_exception_code:
- // This is the simple case where we are the outermost finally. All we
- // have to do here is make sure we escape this and recover it in the
- // outlined handler.
- if (!SEHCodeSlot)
- SEHCodeSlot = ParentCGF.SEHCodeSlotStack.back();
- break;
- }
- }
};
}
-llvm::Value *CodeGenFunction::recoverAddrOfEscapedLocal(
- CodeGenFunction &ParentCGF, llvm::Value *ParentVar, llvm::Value *ParentFP) {
- llvm::CallInst *RecoverCall = nullptr;
- CGBuilderTy Builder(AllocaInsertPt);
- if (auto *ParentAlloca = dyn_cast<llvm::AllocaInst>(ParentVar)) {
- // Mark the variable escaped if nobody else referenced it and compute the
- // frameescape index.
- auto InsertPair = ParentCGF.EscapedLocals.insert(
- std::make_pair(ParentAlloca, ParentCGF.EscapedLocals.size()));
- int FrameEscapeIdx = InsertPair.first->second;
- // call i8* @llvm.framerecover(i8* bitcast(@parentFn), i8* %fp, i32 N)
- llvm::Function *FrameRecoverFn = llvm::Intrinsic::getDeclaration(
- &CGM.getModule(), llvm::Intrinsic::framerecover);
- llvm::Constant *ParentI8Fn =
- llvm::ConstantExpr::getBitCast(ParentCGF.CurFn, Int8PtrTy);
- RecoverCall = Builder.CreateCall(
- FrameRecoverFn, {ParentI8Fn, ParentFP,
- llvm::ConstantInt::get(Int32Ty, FrameEscapeIdx)});
-
- } else {
- // If the parent didn't have an alloca, we're doing some nested outlining.
- // Just clone the existing framerecover call, but tweak the FP argument to
- // use our FP value. All other arguments are constants.
- auto *ParentRecover =
- cast<llvm::IntrinsicInst>(ParentVar->stripPointerCasts());
- assert(ParentRecover->getIntrinsicID() == llvm::Intrinsic::framerecover &&
- "expected alloca or framerecover in parent LocalDeclMap");
- RecoverCall = cast<llvm::CallInst>(ParentRecover->clone());
- RecoverCall->setArgOperand(1, ParentFP);
- RecoverCall->insertBefore(AllocaInsertPt);
- }
-
- // Bitcast the variable, rename it, and insert it in the local decl map.
- llvm::Value *ChildVar =
- Builder.CreateBitCast(RecoverCall, ParentVar->getType());
- ChildVar->setName(ParentVar->getName());
- return ChildVar;
-}
-
void CodeGenFunction::EmitCapturedLocals(CodeGenFunction &ParentCGF,
const Stmt *OutlinedStmt,
- bool IsFilter) {
+ llvm::Value *ParentFP) {
// Find all captures in the Stmt.
CaptureFinder Finder(ParentCGF, ParentCGF.CXXABIThisDecl);
Finder.Visit(OutlinedStmt);
- // We can exit early on x86_64 when there are no captures. We just have to
- // save the exception code in filters so that __exception_code() works.
- if (!Finder.foundCaptures() &&
- CGM.getTarget().getTriple().getArch() != llvm::Triple::x86) {
- if (IsFilter)
- EmitSEHExceptionCodeSave(ParentCGF, nullptr, nullptr);
+ // Typically there are no captures and we can exit early.
+ if (Finder.Captures.empty())
return;
- }
- llvm::Value *EntryEBP = nullptr;
- llvm::Value *ParentFP;
- if (IsFilter && CGM.getTarget().getTriple().getArch() == llvm::Triple::x86) {
- // 32-bit SEH filters need to be careful about FP recovery. The end of the
- // EH registration is passed in as the EBP physical register. We can
- // recover that with llvm.frameaddress(1), and adjust that to recover the
- // parent's true frame pointer.
- CGBuilderTy Builder(AllocaInsertPt);
- EntryEBP = Builder.CreateCall(
- CGM.getIntrinsic(llvm::Intrinsic::frameaddress), {Builder.getInt32(1)});
- llvm::Function *RecoverFPIntrin =
- CGM.getIntrinsic(llvm::Intrinsic::x86_seh_recoverfp);
- llvm::Constant *ParentI8Fn =
- llvm::ConstantExpr::getBitCast(ParentCGF.CurFn, Int8PtrTy);
- ParentFP = Builder.CreateCall(RecoverFPIntrin, {ParentI8Fn, EntryEBP});
- } else {
- // Otherwise, for x64 and 32-bit finally functions, the parent FP is the
- // second parameter.
- auto AI = CurFn->arg_begin();
- ++AI;
- ParentFP = AI;
- }
+ // Prepare the first two arguments to llvm.framerecover.
+ llvm::Function *FrameRecoverFn = llvm::Intrinsic::getDeclaration(
+ &CGM.getModule(), llvm::Intrinsic::framerecover);
+ llvm::Constant *ParentI8Fn =
+ llvm::ConstantExpr::getBitCast(ParentCGF.CurFn, Int8PtrTy);
// Create llvm.framerecover calls for all captures.
for (const VarDecl *VD : Finder.Captures) {
continue;
llvm::Value *ParentVar = I->second;
- LocalDeclMap[VD] =
- recoverAddrOfEscapedLocal(ParentCGF, ParentVar, ParentFP);
- }
+ llvm::CallInst *RecoverCall = nullptr;
+ CGBuilderTy Builder(AllocaInsertPt);
+ if (auto *ParentAlloca = dyn_cast<llvm::AllocaInst>(ParentVar)) {
+ // Mark the variable escaped if nobody else referenced it and compute the
+ // frameescape index.
+ auto InsertPair =
+ ParentCGF.EscapedLocals.insert(std::make_pair(ParentAlloca, -1));
+ if (InsertPair.second)
+ InsertPair.first->second = ParentCGF.EscapedLocals.size() - 1;
+ int FrameEscapeIdx = InsertPair.first->second;
+ // call i8* @llvm.framerecover(i8* bitcast(@parentFn), i8* %fp, i32 N)
+ RecoverCall = Builder.CreateCall(
+ FrameRecoverFn, {ParentI8Fn, ParentFP,
+ llvm::ConstantInt::get(Int32Ty, FrameEscapeIdx)});
- if (Finder.SEHCodeSlot) {
- SEHCodeSlotStack.push_back(
- recoverAddrOfEscapedLocal(ParentCGF, Finder.SEHCodeSlot, ParentFP));
- }
+ } else {
+ // If the parent didn't have an alloca, we're doing some nested outlining.
+ // Just clone the existing framerecover call, but tweak the FP argument to
+ // use our FP value. All other arguments are constants.
+ auto *ParentRecover =
+ cast<llvm::IntrinsicInst>(ParentVar->stripPointerCasts());
+ assert(ParentRecover->getIntrinsicID() == llvm::Intrinsic::framerecover &&
+ "expected alloca or framerecover in parent LocalDeclMap");
+ RecoverCall = cast<llvm::CallInst>(ParentRecover->clone());
+ RecoverCall->setArgOperand(1, ParentFP);
+ RecoverCall->insertBefore(AllocaInsertPt);
+ }
- if (IsFilter)
- EmitSEHExceptionCodeSave(ParentCGF, ParentFP, EntryEBP);
+ // Bitcast the variable, rename it, and insert it in the local decl map.
+ llvm::Value *ChildVar =
+ Builder.CreateBitCast(RecoverCall, ParentVar->getType());
+ ChildVar->setName(ParentVar->getName());
+ LocalDeclMap[VD] = ChildVar;
+ }
}
/// Arrange a function prototype that can be called by Windows exception
/// handling personalities. On Win64, the prototype looks like:
/// RetTy func(void *EHPtrs, void *ParentFP);
void CodeGenFunction::startOutlinedSEHHelper(CodeGenFunction &ParentCGF,
- bool IsFilter,
+ StringRef Name, QualType RetTy,
+ FunctionArgList &Args,
const Stmt *OutlinedStmt) {
- SourceLocation StartLoc = OutlinedStmt->getLocStart();
-
- // Get the mangled function name.
- SmallString<128> Name;
- {
- llvm::raw_svector_ostream OS(Name);
- const Decl *ParentCodeDecl = ParentCGF.CurCodeDecl;
- const NamedDecl *Parent = dyn_cast_or_null<NamedDecl>(ParentCodeDecl);
- assert(Parent && "FIXME: handle unnamed decls (lambdas, blocks) with SEH");
- MangleContext &Mangler = CGM.getCXXABI().getMangleContext();
- if (IsFilter)
- Mangler.mangleSEHFilterExpression(Parent, OS);
- else
- Mangler.mangleSEHFinallyBlock(Parent, OS);
- }
-
- FunctionArgList Args;
- if (CGM.getTarget().getTriple().getArch() != llvm::Triple::x86 || !IsFilter) {
- // All SEH finally functions take two parameters. Win64 filters take two
- // parameters. Win32 filters take no parameters.
- if (IsFilter) {
- Args.push_back(ImplicitParamDecl::Create(
- getContext(), nullptr, StartLoc,
- &getContext().Idents.get("exception_pointers"),
- getContext().VoidPtrTy));
- } else {
- Args.push_back(ImplicitParamDecl::Create(
- getContext(), nullptr, StartLoc,
- &getContext().Idents.get("abnormal_termination"),
- getContext().UnsignedCharTy));
- }
- Args.push_back(ImplicitParamDecl::Create(
- getContext(), nullptr, StartLoc,
- &getContext().Idents.get("frame_pointer"), getContext().VoidPtrTy));
- }
-
- QualType RetTy = IsFilter ? getContext().LongTy : getContext().VoidTy;
-
llvm::Function *ParentFn = ParentCGF.CurFn;
const CGFunctionInfo &FnInfo = CGM.getTypes().arrangeFreeFunctionDeclaration(
RetTy, Args, FunctionType::ExtInfo(), /*isVariadic=*/false);
OutlinedStmt->getLocStart(), OutlinedStmt->getLocStart());
CGM.SetLLVMFunctionAttributes(nullptr, FnInfo, CurFn);
- EmitCapturedLocals(ParentCGF, OutlinedStmt, IsFilter);
+
+ auto AI = Fn->arg_begin();
+ ++AI;
+ EmitCapturedLocals(ParentCGF, OutlinedStmt, &*AI);
}
/// Create a stub filter function that will ultimately hold the code of the
CodeGenFunction::GenerateSEHFilterFunction(CodeGenFunction &ParentCGF,
const SEHExceptStmt &Except) {
const Expr *FilterExpr = Except.getFilterExpr();
- startOutlinedSEHHelper(ParentCGF, true, FilterExpr);
+ SourceLocation StartLoc = FilterExpr->getLocStart();
+
+ SEHPointersDecl = ImplicitParamDecl::Create(
+ getContext(), nullptr, StartLoc,
+ &getContext().Idents.get("exception_pointers"), getContext().VoidPtrTy);
+ FunctionArgList Args;
+ Args.push_back(SEHPointersDecl);
+ Args.push_back(ImplicitParamDecl::Create(
+ getContext(), nullptr, StartLoc,
+ &getContext().Idents.get("frame_pointer"), getContext().VoidPtrTy));
+
+ // Get the mangled function name.
+ SmallString<128> Name;
+ {
+ llvm::raw_svector_ostream OS(Name);
+ const Decl *ParentCodeDecl = ParentCGF.CurCodeDecl;
+ const NamedDecl *Parent = dyn_cast_or_null<NamedDecl>(ParentCodeDecl);
+ assert(Parent && "FIXME: handle unnamed decls (lambdas, blocks) with SEH");
+ CGM.getCXXABI().getMangleContext().mangleSEHFilterExpression(Parent, OS);
+ }
+
+ startOutlinedSEHHelper(ParentCGF, Name, getContext().LongTy, Args,
+ FilterExpr);
+
+ // Mark finally block calls as nounwind and noinline to make LLVM's job a
+ // little easier.
+ // FIXME: Remove these restrictions in the future.
+ CurFn->addFnAttr(llvm::Attribute::NoUnwind);
+ CurFn->addFnAttr(llvm::Attribute::NoInline);
+
+ EmitSEHExceptionCodeSave();
// Emit the original filter expression, convert to i32, and return.
llvm::Value *R = EmitScalarExpr(FilterExpr);
CodeGenFunction::GenerateSEHFinallyFunction(CodeGenFunction &ParentCGF,
const SEHFinallyStmt &Finally) {
const Stmt *FinallyBlock = Finally.getBlock();
- startOutlinedSEHHelper(ParentCGF, false, FinallyBlock);
+ SourceLocation StartLoc = FinallyBlock->getLocStart();
- // Mark finally block calls as nounwind and noinline to make LLVM's job a
- // little easier.
- // FIXME: Remove these restrictions in the future.
- CurFn->addFnAttr(llvm::Attribute::NoUnwind);
- CurFn->addFnAttr(llvm::Attribute::NoInline);
+ FunctionArgList Args;
+ Args.push_back(ImplicitParamDecl::Create(
+ getContext(), nullptr, StartLoc,
+ &getContext().Idents.get("abnormal_termination"),
+ getContext().UnsignedCharTy));
+ Args.push_back(ImplicitParamDecl::Create(
+ getContext(), nullptr, StartLoc,
+ &getContext().Idents.get("frame_pointer"), getContext().VoidPtrTy));
+
+ // Get the mangled function name.
+ SmallString<128> Name;
+ {
+ llvm::raw_svector_ostream OS(Name);
+ const Decl *ParentCodeDecl = ParentCGF.CurCodeDecl;
+ const NamedDecl *Parent = dyn_cast_or_null<NamedDecl>(ParentCodeDecl);
+ assert(Parent && "FIXME: handle unnamed decls (lambdas, blocks) with SEH");
+ CGM.getCXXABI().getMangleContext().mangleSEHFinallyBlock(Parent, OS);
+ }
+
+ startOutlinedSEHHelper(ParentCGF, Name, getContext().VoidTy, Args,
+ FinallyBlock);
// Emit the original filter expression, convert to i32, and return.
EmitStmt(FinallyBlock);
return CurFn;
}
-void CodeGenFunction::EmitSEHExceptionCodeSave(CodeGenFunction &ParentCGF,
- llvm::Value *ParentFP,
- llvm::Value *EntryEBP) {
- // Get the pointer to the EXCEPTION_POINTERS struct. This is returned by the
- // __exception_info intrinsic.
- if (CGM.getTarget().getTriple().getArch() != llvm::Triple::x86) {
- // On Win64, the info is passed as the first parameter to the filter.
- auto AI = CurFn->arg_begin();
- SEHInfo = AI;
- SEHCodeSlotStack.push_back(
- CreateMemTemp(getContext().IntTy, "__exception_code"));
- } else {
- // On Win32, the EBP on entry to the filter points to the end of an
- // exception registration object. It contains 6 32-bit fields, and the info
- // pointer is stored in the second field. So, GEP 20 bytes backwards and
- // load the pointer.
- SEHInfo = Builder.CreateConstInBoundsGEP1_32(Int8Ty, EntryEBP, -20);
- SEHInfo = Builder.CreateBitCast(SEHInfo, Int8PtrTy->getPointerTo());
- SEHInfo = Builder.CreateLoad(Int8PtrTy, SEHInfo);
- SEHCodeSlotStack.push_back(recoverAddrOfEscapedLocal(
- ParentCGF, ParentCGF.SEHCodeSlotStack.back(), ParentFP));
- }
-
+void CodeGenFunction::EmitSEHExceptionCodeSave() {
// Save the exception code in the exception slot to unify exception access in
// the filter function and the landing pad.
// struct EXCEPTION_POINTERS {
// EXCEPTION_RECORD *ExceptionRecord;
// CONTEXT *ContextRecord;
// };
- // int exceptioncode = exception_pointers->ExceptionRecord->ExceptionCode;
+ // void *exn.slot =
+ // (void *)(uintptr_t)exception_pointers->ExceptionRecord->ExceptionCode;
+ llvm::Value *Ptrs = Builder.CreateLoad(GetAddrOfLocalVar(SEHPointersDecl));
llvm::Type *RecordTy = CGM.Int32Ty->getPointerTo();
llvm::Type *PtrsTy = llvm::StructType::get(RecordTy, CGM.VoidPtrTy, nullptr);
- llvm::Value *Ptrs = Builder.CreateBitCast(SEHInfo, PtrsTy->getPointerTo());
+ Ptrs = Builder.CreateBitCast(Ptrs, PtrsTy->getPointerTo());
llvm::Value *Rec = Builder.CreateStructGEP(PtrsTy, Ptrs, 0);
Rec = Builder.CreateLoad(Rec);
llvm::Value *Code = Builder.CreateLoad(Rec);
- assert(!SEHCodeSlotStack.empty() && "emitting EH code outside of __except");
- Builder.CreateStore(Code, SEHCodeSlotStack.back());
+ Code = Builder.CreateZExt(Code, CGM.IntPtrTy);
+ // FIXME: Change landing pads to produce {i32, i32} and make the exception
+ // slot an i32.
+ Code = Builder.CreateIntToPtr(Code, CGM.VoidPtrTy);
+ Builder.CreateStore(Code, getExceptionSlot());
}
llvm::Value *CodeGenFunction::EmitSEHExceptionInfo() {
// Sema should diagnose calling this builtin outside of a filter context, but
// don't crash if we screw up.
- if (!SEHInfo)
+ if (!SEHPointersDecl)
return llvm::UndefValue::get(Int8PtrTy);
- assert(SEHInfo->getType() == Int8PtrTy);
- return SEHInfo;
+ return Builder.CreateLoad(GetAddrOfLocalVar(SEHPointersDecl));
}
llvm::Value *CodeGenFunction::EmitSEHExceptionCode() {
- assert(!SEHCodeSlotStack.empty() && "emitting EH code outside of __except");
- return Builder.CreateLoad(Int32Ty, SEHCodeSlotStack.back());
+ // If we're in a landing pad or filter function, the exception slot contains
+ // the code.
+ assert(ExceptionSlot);
+ llvm::Value *Code =
+ Builder.CreatePtrToInt(getExceptionFromSlot(), CGM.IntPtrTy);
+ return Builder.CreateTrunc(Code, CGM.Int32Ty);
}
llvm::Value *CodeGenFunction::EmitSEHAbnormalTermination() {
void CodeGenFunction::EnterSEHTryStmt(const SEHTryStmt &S) {
CodeGenFunction HelperCGF(CGM, /*suppressNewContext=*/true);
if (const SEHFinallyStmt *Finally = S.getFinallyHandler()) {
- // Outline the finally block.
+ // Push a cleanup for __finally blocks.
llvm::Function *FinallyFunc =
HelperCGF.GenerateSEHFinallyFunction(*this, *Finally);
-
- // Push a cleanup for __finally blocks.
EHStack.pushCleanup<PerformSEHFinally>(NormalAndEHCleanup, FinallyFunc);
return;
}
const SEHExceptStmt *Except = S.getExceptHandler();
assert(Except);
EHCatchScope *CatchScope = EHStack.pushCatch(1);
- SEHCodeSlotStack.push_back(
- CreateMemTemp(getContext().IntTy, "__exception_code"));
- // If the filter is known to evaluate to 1, then we can use the clause
- // "catch i8* null". We can't do this on x86 because the filter has to save
- // the exception code.
+ // If the filter is known to evaluate to 1, then we can use the clause "catch
+ // i8* null".
llvm::Constant *C =
CGM.EmitConstantExpr(Except->getFilterExpr(), getContext().IntTy, this);
- if (CGM.getTarget().getTriple().getArch() != llvm::Triple::x86 && C &&
- C->isOneValue()) {
+ if (C && C->isOneValue()) {
CatchScope->setCatchAllHandler(0, createBasicBlock("__except"));
return;
}
if (!CatchScope.hasEHBranches()) {
CatchScope.clearHandlerBlocks();
EHStack.popCatch();
- SEHCodeSlotStack.pop_back();
return;
}
EmitBlockAfterUses(ExceptBB);
- // On Win64, the exception pointer is the exception code. Copy it to the slot.
- if (CGM.getTarget().getTriple().getArch() != llvm::Triple::x86) {
- llvm::Value *Code =
- Builder.CreatePtrToInt(getExceptionFromSlot(), IntPtrTy);
- Code = Builder.CreateTrunc(Code, Int32Ty);
- Builder.CreateStore(Code, SEHCodeSlotStack.back());
- }
-
// Emit the __except body.
EmitStmt(Except->getBlock());
- // End the lifetime of the exception code.
- SEHCodeSlotStack.pop_back();
-
if (HaveInsertPoint())
Builder.CreateBr(ContBB);
// RUN: %clang_cc1 %s -triple x86_64-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s
-// RUN: %clang_cc1 %s -triple i686-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s
void abort(void) __attribute__((noreturn));
void might_crash(void);
//
// CHECK: [[invoke_cont]]
// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
-// CHECK: call void @"\01?fin$0@0@basic_finally@@"({{i8( zeroext)?}} 0, i8* %[[fp]])
+// CHECK: call void @"\01?fin$0@0@basic_finally@@"(i8 0, i8* %[[fp]])
// CHECK-NEXT: ret void
//
// CHECK: [[lpad]]
// CHECK-NEXT: landingpad
// CHECK-NEXT: cleanup
// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
-// CHECK: call void @"\01?fin$0@0@basic_finally@@"({{i8( zeroext)?}} 1, i8* %[[fp]])
+// CHECK: call void @"\01?fin$0@0@basic_finally@@"(i8 1, i8* %[[fp]])
// CHECK: resume { i8*, i32 }
-// CHECK: define internal void @"\01?fin$0@0@basic_finally@@"({{.*}})
+// CHECK: define internal void @"\01?fin$0@0@basic_finally@@"(i8 %abnormal_termination, i8* %frame_pointer)
// CHECK: call void @cleanup()
// Mostly check that we don't double emit 'r' which would crash.
//
// CHECK: [[invoke_cont]]
// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
-// CHECK: call void @"\01?fin$0@0@label_in_finally@@"({{i8( zeroext)?}} 0, i8* %[[fp]])
+// CHECK: call void @"\01?fin$0@0@label_in_finally@@"(i8 0, i8* %[[fp]])
// CHECK: ret void
-// CHECK: define internal void @"\01?fin$0@0@label_in_finally@@"({{.*}})
+// CHECK: define internal void @"\01?fin$0@0@label_in_finally@@"(i8 %abnormal_termination, i8* %frame_pointer)
// CHECK: br label %[[l:[^ ]*]]
//
// CHECK: [[l]]
//
// CHECK: [[invoke_cont]]
// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
-// CHECK: call void @"\01?fin$0@0@use_abnormal_termination@@"({{i8( zeroext)?}} 0, i8* %[[fp]])
+// CHECK: call void @"\01?fin$0@0@use_abnormal_termination@@"(i8 0, i8* %[[fp]])
// CHECK: ret void
//
// CHECK: [[lpad]]
// CHECK-NEXT: landingpad
// CHECK-NEXT: cleanup
// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
-// CHECK: call void @"\01?fin$0@0@use_abnormal_termination@@"({{i8( zeroext)?}} 1, i8* %[[fp]])
+// CHECK: call void @"\01?fin$0@0@use_abnormal_termination@@"(i8 1, i8* %[[fp]])
// CHECK: resume { i8*, i32 }
-// CHECK: define internal void @"\01?fin$0@0@use_abnormal_termination@@"({{i8( zeroext)?}} %[[abnormal:abnormal_termination]], i8* %frame_pointer)
-// CHECK: %[[abnormal_zext:[^ ]*]] = zext i8 %[[abnormal]] to i32
+// CHECK: define internal void @"\01?fin$0@0@use_abnormal_termination@@"(i8 %abnormal_termination, i8* %frame_pointer)
+// CHECK: %[[abnormal_zext:[^ ]*]] = zext i8 %abnormal_termination to i32
// CHECK: store i32 %[[abnormal_zext]], i32* @crashed
// CHECK-NEXT: ret void
}
// CHECK-LABEL: define void @noreturn_noop_finally()
-// CHECK: call void @"\01?fin$0@0@noreturn_noop_finally@@"({{.*}})
+// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK: call void @"\01?fin$0@0@noreturn_noop_finally@@"(i8 0, i8* %[[fp]])
// CHECK: ret void
-// CHECK: define internal void @"\01?fin$0@0@noreturn_noop_finally@@"({{.*}})
+// CHECK: define internal void @"\01?fin$0@0@noreturn_noop_finally@@"(i8 %abnormal_termination, i8* %frame_pointer)
// CHECK: call void @abort()
// CHECK: unreachable
// CHECK: to label %[[cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
//
// CHECK: [[cont]]
-// CHECK: call void @"\01?fin$0@0@noreturn_finally@@"({{.*}})
+// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK: call void @"\01?fin$0@0@noreturn_finally@@"(i8 0, i8* %[[fp]])
// CHECK: ret void
//
// CHECK: [[lpad]]
// CHECK: landingpad
// CHECK-NEXT: cleanup
-// CHECK: call void @"\01?fin$0@0@noreturn_finally@@"({{.*}})
+// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK: call void @"\01?fin$0@0@noreturn_finally@@"(i8 1, i8* %[[fp]])
// CHECK: resume { i8*, i32 }
-// CHECK: define internal void @"\01?fin$0@0@noreturn_finally@@"({{.*}})
+// CHECK: define internal void @"\01?fin$0@0@noreturn_finally@@"(i8 %abnormal_termination, i8* %frame_pointer)
// CHECK: call void @abort()
// CHECK: unreachable
}
}
// CHECK-LABEL: define i32 @finally_with_return()
-// CHECK: call void @"\01?fin$0@0@finally_with_return@@"({{.*}})
+// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK-NEXT: call void @"\01?fin$0@0@finally_with_return@@"(i8 0, i8* %[[fp]])
// CHECK-NEXT: ret i32 42
-// CHECK: define internal void @"\01?fin$0@0@finally_with_return@@"({{.*}})
+// CHECK: define internal void @"\01?fin$0@0@finally_with_return@@"(i8 %abnormal_termination, i8* %frame_pointer)
// CHECK-NOT: br i1
// CHECK-NOT: br label
// CHECK: ret void
}
// CHECK-LABEL: define i32 @nested___finally___finally
-// CHECK: invoke void @"\01?fin$1@0@nested___finally___finally@@"({{.*}})
+// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK: invoke void @"\01?fin$1@0@nested___finally___finally@@"(i8 0, i8* %[[fp]])
// CHECK: to label %[[outercont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
//
// CHECK: [[outercont]]
-// CHECK: call void @"\01?fin$0@0@nested___finally___finally@@"({{.*}})
+// CHECK-NEXT: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK-NEXT: call void @"\01?fin$0@0@nested___finally___finally@@"(i8 0, i8* %[[fp]])
// CHECK-NEXT: ret i32 0
//
// CHECK: [[lpad]]
// CHECK-NEXT: landingpad
// CHECK-NEXT: cleanup
-// CHECK: call void @"\01?fin$0@0@nested___finally___finally@@"({{.*}})
+// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK-NEXT: call void @"\01?fin$0@0@nested___finally___finally@@"(i8 1, i8* %[[fp]])
-// CHECK-LABEL: define internal void @"\01?fin$0@0@nested___finally___finally@@"({{.*}})
+// CHECK-LABEL: define internal void @"\01?fin$0@0@nested___finally___finally@@"(i8 %abnormal_termination, i8* %frame_pointer)
// CHECK: ret void
-// CHECK-LABEL: define internal void @"\01?fin$1@0@nested___finally___finally@@"({{.*}})
+// CHECK-LABEL: define internal void @"\01?fin$1@0@nested___finally___finally@@"(i8 %abnormal_termination, i8* %frame_pointer)
// CHECK: unreachable
int nested___finally___finally_with_eh_edge() {
// CHECK-NEXT: to label %[[invokecont:[^ ]*]] unwind label %[[lpad1:[^ ]*]]
//
// [[invokecont]]
-// CHECK: invoke void @"\01?fin$1@0@nested___finally___finally_with_eh_edge@@"({{.*}})
+// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK: invoke void @"\01?fin$1@0@nested___finally___finally_with_eh_edge@@"(i8 0, i8* %[[fp]])
// CHECK: to label %[[outercont:[^ ]*]] unwind label %[[lpad2:[^ ]*]]
//
// CHECK: [[outercont]]
-// CHECK: call void @"\01?fin$0@0@nested___finally___finally_with_eh_edge@@"({{.*}})
+// CHECK-NEXT: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK-NEXT: call void @"\01?fin$0@0@nested___finally___finally_with_eh_edge@@"(i8 0, i8* %[[fp]])
// CHECK-NEXT: ret i32 912
//
// CHECK: [[lpad1]]
// CHECK-NEXT: landingpad
// CHECK-NEXT: cleanup
-// CHECK: invoke void @"\01?fin$1@0@nested___finally___finally_with_eh_edge@@"({{.*}})
+// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK: invoke void @"\01?fin$1@0@nested___finally___finally_with_eh_edge@@"(i8 1, i8* %[[fp]])
// CHECK: to label %[[outercont:[^ ]*]] unwind label %[[lpad2]]
//
// CHECK: [[lpad2]]
// CHECK-NEXT: landingpad
// CHECK-NEXT: cleanup
-// CHECK: call void @"\01?fin$0@0@nested___finally___finally_with_eh_edge@@"({{.*}})
+// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
+// CHECK: call void @"\01?fin$0@0@nested___finally___finally_with_eh_edge@@"(i8 1, i8* %[[fp]])
// CHECK: resume
-// CHECK-LABEL: define internal void @"\01?fin$0@0@nested___finally___finally_with_eh_edge@@"({{.*}})
+// CHECK-LABEL: define internal void @"\01?fin$0@0@nested___finally___finally_with_eh_edge@@"(i8 %abnormal_termination, i8* %frame_pointer)
// CHECK: ret void
-// CHECK-LABEL: define internal void @"\01?fin$1@0@nested___finally___finally_with_eh_edge@@"({{.*}})
+// CHECK-LABEL: define internal void @"\01?fin$1@0@nested___finally___finally_with_eh_edge@@"(i8 %abnormal_termination, i8* %frame_pointer)
// CHECK: unreachable
-// RUN: %clang_cc1 %s -triple x86_64-pc-win32 -fms-extensions -emit-llvm -o - \
-// RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=X64
-// RUN: %clang_cc1 %s -triple i686-pc-win32 -fms-extensions -emit-llvm -o - \
-// RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=X86
+// RUN: %clang_cc1 %s -triple x86_64-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s
void try_body(int numerator, int denominator, int *myres) {
*myres = numerator / denominator;
*res = myres;
return success;
}
-
-// X64-LABEL: define i32 @safe_div(i32 %numerator, i32 %denominator, i32* %res) {{.*}} personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
-// X64: invoke void @try_body(i32 %{{.*}}, i32 %{{.*}}, i32* %{{.*}}) #[[NOINLINE:[0-9]+]]
-// X64: to label %{{.*}} unwind label %[[lpad:[^ ]*]]
-//
-// X64: [[lpad]]
-// X64: landingpad { i8*, i32 }
-// X64-NEXT: catch i8* null
-// X64-NOT: br i1
-// X64: br label %[[except:[^ ]*]]
-// X64: [[except]]
-// X64: store i32 -42, i32* %[[success:[^ ]*]]
-//
-// X64: %[[res:[^ ]*]] = load i32, i32* %[[success]]
-// X64: ret i32 %[[res]]
-
-// X86-LABEL: define i32 @safe_div(i32 %numerator, i32 %denominator, i32* %res) {{.*}} personality i8* bitcast (i32 (...)* @_except_handler3 to i8*)
-// X86: invoke void @try_body(i32 %{{.*}}, i32 %{{.*}}, i32* %{{.*}}) #[[NOINLINE:[0-9]+]]
-// X86: to label %{{.*}} unwind label %[[lpad:[^ ]*]]
-//
-// X86: [[lpad]]
-// X86: landingpad { i8*, i32 }
-// X86-NEXT: catch i8* bitcast (i32 ()* @"\01?filt$0@0@safe_div@@" to i8*)
-// X86-NOT: br i1
-// X86: br label %[[except:[^ ]*]]
-// X86: [[except]]
-// X86: store i32 -42, i32* %[[success:[^ ]*]]
-//
-// X86: %[[res:[^ ]*]] = load i32, i32* %[[success]]
-// X86: ret i32 %[[res]]
-
-// X86-LABEL: define internal i32 @"\01?filt$0@0@safe_div@@"()
-// X86: %[[ebp:[^ ]*]] = call i8* @llvm.frameaddress(i32 1)
-// X86: %[[fp:[^ ]*]] = call i8* @llvm.x86.seh.recoverfp(i8* bitcast (i32 (i32, i32, i32*)* @safe_div to i8*), i8* %[[ebp]])
-// X86: call i8* @llvm.framerecover(i8* bitcast (i32 (i32, i32, i32*)* @safe_div to i8*), i8* %[[fp]], i32 0)
-// X86: load i8*, i8**
-// X86: load i32*, i32**
-// X86: load i32, i32*
-// X86: store i32 %{{.*}}, i32*
-// X86: ret i32 1
+// CHECK-LABEL: define i32 @safe_div(i32 %numerator, i32 %denominator, i32* %res) {{.*}} personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
+// CHECK: invoke void @try_body(i32 %{{.*}}, i32 %{{.*}}, i32* %{{.*}}) #[[NOINLINE:[0-9]+]]
+// CHECK: to label %{{.*}} unwind label %[[lpad:[^ ]*]]
+//
+// CHECK: [[lpad]]
+// CHECK: landingpad { i8*, i32 }
+// CHECK-NEXT: catch i8* null
+// CHECK-NOT: br i1
+// CHECK: br label %[[except:[^ ]*]]
+// CHECK: [[except]]
+// CHECK-NEXT: store i32 -42, i32* %[[success:[^ ]*]]
+//
+// CHECK: %[[res:[^ ]*]] = load i32, i32* %[[success]]
+// CHECK: ret i32 %[[res]]
void j(void);
return r;
}
-// CHECK-LABEL: define i32 @filter_expr_capture()
-// X64-SAME: personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
-// X86-SAME: personality i8* bitcast (i32 (...)* @_except_handler3 to i8*)
-// X64: call void (...) @llvm.frameescape(i32* %[[r:[^ ,]*]])
-// X86: call void (...) @llvm.frameescape(i32* %[[r:[^ ,]*]], i32* %[[code:[^ ,]*]])
+// CHECK-LABEL: define i32 @filter_expr_capture() {{.*}} personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
+// CHECK: call void (...) @llvm.frameescape(i32* %[[r:[^ ,]*]])
// CHECK: store i32 42, i32* %[[r]]
// CHECK: invoke void @j() #[[NOINLINE]]
//
// CHECK: landingpad
-// CHECK-NEXT: catch i8* bitcast (i32 ({{.*}})* @"\01?filt$0@0@filter_expr_capture@@" to i8*)
+// CHECK-NEXT: catch i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@filter_expr_capture@@" to i8*)
// CHECK: store i32 13, i32* %[[r]]
//
// CHECK: %[[rv:[^ ]*]] = load i32, i32* %[[r]]
// CHECK: ret i32 %[[rv]]
-// X64-LABEL: define internal i32 @"\01?filt$0@0@filter_expr_capture@@"(i8* %exception_pointers, i8* %frame_pointer)
-// X64: call i8* @llvm.framerecover(i8* bitcast (i32 ()* @filter_expr_capture to i8*), i8* %frame_pointer, i32 0)
-//
-// X86-LABEL: define internal i32 @"\01?filt$0@0@filter_expr_capture@@"()
-// X86: %[[ebp:[^ ]*]] = call i8* @llvm.frameaddress(i32 1)
-// X86: %[[fp:[^ ]*]] = call i8* @llvm.x86.seh.recoverfp(i8* bitcast (i32 ()* @filter_expr_capture to i8*), i8* %[[ebp]])
-// X86: call i8* @llvm.framerecover(i8* bitcast (i32 ()* @filter_expr_capture to i8*), i8* %[[fp]], i32 0)
-//
+// CHECK-LABEL: define internal i32 @"\01?filt$0@0@filter_expr_capture@@"(i8* %exception_pointers, i8* %frame_pointer)
+// CHECK: call i8* @llvm.framerecover(i8* bitcast (i32 ()* @filter_expr_capture to i8*), i8* %frame_pointer, i32 0)
// CHECK: store i32 -1, i32* %{{.*}}
// CHECK: ret i32 -1
}
return r;
}
-// CHECK-LABEL: define i32 @nested_try()
-// X64-SAME: personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
-// X86-SAME: personality i8* bitcast (i32 (...)* @_except_handler3 to i8*)
+// CHECK-LABEL: define i32 @nested_try() {{.*}} personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
// CHECK: store i32 42, i32* %[[r:[^ ,]*]]
// CHECK: invoke void @j() #[[NOINLINE]]
// CHECK: to label %[[cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
//
// CHECK: [[lpad]]
// CHECK: landingpad { i8*, i32 }
-// CHECK: catch i8* bitcast (i32 ({{.*}})* @"\01?filt$1@0@nested_try@@" to i8*)
-// CHECK: catch i8* bitcast (i32 ({{.*}})* @"\01?filt$0@0@nested_try@@" to i8*)
+// CHECK: catch i8* bitcast (i32 (i8*, i8*)* @"\01?filt$1@0@nested_try@@" to i8*)
+// CHECK: catch i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@nested_try@@" to i8*)
// CHECK: store i8* %{{.*}}, i8** %[[ehptr_slot:[^ ]*]]
// CHECK: store i32 %{{.*}}, i32* %[[sel_slot:[^ ]*]]
//
// CHECK: load i32, i32* %[[sel_slot]]
-// CHECK: call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ({{.*}})* @"\01?filt$1@0@nested_try@@" to i8*))
+// CHECK: call i32 @llvm.eh.typeid.for(i8* bitcast (i32 (i8*, i8*)* @"\01?filt$1@0@nested_try@@" to i8*))
// CHECK: icmp eq i32
// CHECK: br i1
//
// CHECK: load i32, i32* %[[sel_slot]]
-// CHECK: call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ({{.*}})* @"\01?filt$0@0@nested_try@@" to i8*))
+// CHECK: call i32 @llvm.eh.typeid.for(i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@nested_try@@" to i8*))
// CHECK: icmp eq i32
// CHECK: br i1
//
//
// CHECK: [[inner_try_cont]]
// CHECK: br label %[[outer_try_cont]]
-//
-// CHECK-LABEL: define internal i32 @"\01?filt$0@0@nested_try@@"({{.*}})
-// X86: call i8* @llvm.x86.seh.recoverfp({{.*}})
-// CHECK: load i32*, i32**
-// CHECK: load i32, i32*
-// CHECK: icmp eq i32 %{{.*}}, 456
-//
-// CHECK-LABEL: define internal i32 @"\01?filt$1@0@nested_try@@"({{.*}})
-// X86: call i8* @llvm.x86.seh.recoverfp({{.*}})
-// CHECK: load i32*, i32**
-// CHECK: load i32, i32*
-// CHECK: icmp eq i32 %{{.*}}, 123
-int basic_finally(int g) {
+static unsigned g = 0;
+void basic_finally(void) {
+ ++g;
__try {
j();
} __finally {
- ++g;
+ --g;
}
- return g;
}
-// CHECK-LABEL: define i32 @basic_finally(i32 %g)
-// X64-SAME: personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
-// X86-SAME: personality i8* bitcast (i32 (...)* @_except_handler3 to i8*)
-// CHECK: %[[g_addr:[^ ]*]] = alloca i32, align 4
-// CHECK: call void (...) @llvm.frameescape(i32* %[[g_addr]])
-// CHECK: store i32 %g, i32* %[[g_addr]]
+// CHECK-LABEL: define void @basic_finally() {{.*}} personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
+// CHECK: load i32, i32* @g
+// CHECK: add i32 %{{.*}}, 1
+// CHECK: store i32 %{{.*}}, i32* @g
//
// CHECK: invoke void @j()
// CHECK: to label %[[cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
//
// CHECK: [[cont]]
// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
-// CHECK: call void @"\01?fin$0@0@basic_finally@@"({{i8( zeroext)?}} 0, i8* %[[fp]])
-// CHECK: load i32, i32* %[[g_addr]], align 4
-// CHECK: ret i32
+// CHECK: call void @"\01?fin$0@0@basic_finally@@"(i8 0, i8* %[[fp]])
+// CHECK: ret void
//
// CHECK: [[lpad]]
// CHECK: landingpad { i8*, i32 }
// CHECK-NEXT: cleanup
// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
-// CHECK: call void @"\01?fin$0@0@basic_finally@@"({{i8( zeroext)?}} 1, i8* %[[fp]])
+// CHECK: call void @"\01?fin$0@0@basic_finally@@"(i8 1, i8* %[[fp]])
// CHECK: resume
-// CHECK: define internal void @"\01?fin$0@0@basic_finally@@"({{i8( zeroext)?}} %abnormal_termination, i8* %frame_pointer)
-// CHECK: call i8* @llvm.framerecover(i8* bitcast (i32 (i32)* @basic_finally to i8*), i8* %frame_pointer, i32 0)
-// CHECK: load i32, i32* %{{.*}}, align 4
-// CHECK: add nsw i32 %{{.*}}, 1
-// CHECK: store i32 %{{.*}}, i32* %{{.*}}, align 4
+// CHECK: define internal void @"\01?fin$0@0@basic_finally@@"(i8 %abnormal_termination, i8* %frame_pointer)
+// CHECK: load i32, i32* @g, align 4
+// CHECK: add i32 %{{.*}}, -1
+// CHECK: store i32 %{{.*}}, i32* @g, align 4
// CHECK: ret void
int returns_int(void);