int getArgumentFrameIndex(const Argument *A);
private:
+ void addSEHHandlersForLPads();
+
/// LiveOutRegInfo - Information about live out vregs.
IndexedMap<LiveOutInfo, VirtReg2IndexFunctor> LiveOutRegInfo;
};
// Forward declarations.
class Constant;
class GlobalVariable;
+class BlockAddress;
class MDNode;
class MMIAddrLabelMap;
class MachineBasicBlock;
class StructType;
struct WinEHFuncInfo;
+struct SEHHandler {
+ // Filter or finally function. Null indicates a catch-all.
+ const Function *FilterOrFinally;
+
+ // Address of block to recover at. Null for a finally handler.
+ const BlockAddress *RecoverBA;
+};
+
//===----------------------------------------------------------------------===//
/// LandingPadInfo - This structure is used to retain landing pad info for
/// the current function.
SmallVector<MCSymbol *, 1> BeginLabels; // Labels prior to invoke.
SmallVector<MCSymbol *, 1> EndLabels; // Labels after invoke.
SmallVector<MCSymbol *, 1> ClauseLabels; // Labels for each clause.
+ SmallVector<SEHHandler, 1> SEHHandlers; // SEH handlers active at this lpad.
MCSymbol *LandingPadLabel; // Label at beginning of landing pad.
const Function *Personality; // Personality function.
std::vector<int> TypeIds; // List of type ids (filters negative).
/// each clause gets its own basic block.
MCSymbol *addClauseForLandingPad(MachineBasicBlock *LandingPad);
+ void addSEHCatchHandler(MachineBasicBlock *LandingPad, const Function *Filter,
+ const BlockAddress *RecoverLabel);
+
+ void addSEHCleanupHandler(MachineBasicBlock *LandingPad,
+ const Function *Cleanup);
+
/// getTypeIDFor - Return the type id for the specified typeinfo. This is
/// function wide.
unsigned getTypeIDFor(const GlobalValue *TI);
SDNode *MorphNode(SDNode *Node, unsigned TargetOpc, SDVTList VTs,
ArrayRef<SDValue> Ops, unsigned EmitNodeInfo);
- void PrepareEHLandingPad();
+ /// Prepares the landing pad to take incoming values or do other EH
+ /// personality specific tasks. Returns true if the block should be
+ /// instruction selected, false if no code should be emitted for it.
+ bool PrepareEHLandingPad();
/// \brief Perform instruction selection on all basic blocks in the function.
void SelectAllBasicBlocks(const Function &Fn);
if (isCatchEHSelector(Selector))
++NumEntries;
}
+ NumEntries += CSE.LPad->SEHHandlers.size();
}
Asm->OutStreamer.EmitIntValue(NumEntries, 4);
+ // If there are no actions, we don't need to iterate again.
+ if (NumEntries == 0)
+ return;
+
// Emit the four-label records for each call site entry. The table has to be
// sorted in layout order, and the call sites should already be sorted.
for (const CallSiteEntry &CSE : CallSites) {
End = createImageRel32(EHFuncEndSym);
}
+ // Emit an entry for each action.
+ for (SEHHandler Handler : LPad->SEHHandlers) {
+ Asm->OutStreamer.EmitValue(Begin, 4);
+ Asm->OutStreamer.EmitValue(End, 4);
+
+ // Emit the filter or finally function pointer, if present. Otherwise,
+ // emit '1' to indicate a catch-all.
+ const Function *F = Handler.FilterOrFinally;
+ if (F)
+ Asm->OutStreamer.EmitValue(createImageRel32(Asm->getSymbol(F)), 4);
+ else
+ Asm->OutStreamer.EmitIntValue(1, 4);
+
+ // Emit the recovery address, if present. Otherwise, this must be a
+ // finally.
+ const BlockAddress *BA = Handler.RecoverBA;
+ if (BA)
+ Asm->OutStreamer.EmitValue(
+ createImageRel32(Asm->GetBlockAddressSymbol(BA)), 4);
+ else
+ Asm->OutStreamer.EmitIntValue(0, 4);
+ }
+ if (!LPad->SEHHandlers.empty())
+ continue;
+
// These aren't really type info globals, they are actually pointers to
// filter functions ordered by selector. The zero selector is used for
// cleanups, so slot zero corresponds to selector 1.
return ClauseLabel;
}
+void MachineModuleInfo::addSEHCatchHandler(MachineBasicBlock *LandingPad,
+ const Function *Filter,
+ const BlockAddress *RecoverBA) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ SEHHandler Handler;
+ Handler.FilterOrFinally = Filter;
+ Handler.RecoverBA = RecoverBA;
+ LP.SEHHandlers.push_back(Handler);
+}
+
+void MachineModuleInfo::addSEHCleanupHandler(MachineBasicBlock *LandingPad,
+ const Function *Cleanup) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ SEHHandler Handler;
+ Handler.FilterOrFinally = Cleanup;
+ Handler.RecoverBA = nullptr;
+ LP.SEHHandlers.push_back(Handler);
+}
+
/// TidyLandingPads - Remap landing pad labels and remove any deleted landing
/// pads.
void MachineModuleInfo::TidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap) {
}
// Mark landing pad blocks.
- for (BB = Fn->begin(); BB != EB; ++BB)
+ const LandingPadInst *LP = nullptr;
+ for (BB = Fn->begin(); BB != EB; ++BB) {
if (const auto *Invoke = dyn_cast<InvokeInst>(BB->getTerminator()))
MBBMap[Invoke->getSuccessor(1)]->setIsLandingPad();
+ if (BB->isLandingPad())
+ LP = BB->getLandingPadInst();
+ }
- // Calculate EH numbers for WinEH.
- if (fn.hasFnAttribute("wineh-parent")) {
+ // Calculate EH numbers for MSVC C++ EH and save SEH handlers if necessary.
+ EHPersonality Personality = EHPersonality::Unknown;
+ if (LP)
+ Personality = classifyEHPersonality(LP->getPersonalityFn());
+ if (Personality == EHPersonality::MSVC_Win64SEH) {
+ addSEHHandlersForLPads();
+ } else if (Personality == EHPersonality::MSVC_CXX) {
const Function *WinEHParentFn = MMI.getWinEHParent(&fn);
WinEHFuncInfo &FI = MMI.getWinEHFuncInfo(WinEHParentFn);
if (FI.LandingPadStateMap.empty()) {
}
}
+void FunctionLoweringInfo::addSEHHandlersForLPads() {
+ MachineModuleInfo &MMI = MF->getMMI();
+
+ // Iterate over all landing pads with llvm.eh.actions calls.
+ for (const BasicBlock &BB : *Fn) {
+ const LandingPadInst *LP = BB.getLandingPadInst();
+ if (!LP)
+ continue;
+ const IntrinsicInst *ActionsCall =
+ dyn_cast<IntrinsicInst>(LP->getNextNode());
+ if (!ActionsCall ||
+ ActionsCall->getIntrinsicID() != Intrinsic::eh_actions)
+ continue;
+
+ // Parse the llvm.eh.actions call we found.
+ MachineBasicBlock *LPadMBB = MBBMap[LP->getParent()];
+ SmallVector<ActionHandler *, 4> Actions;
+ parseEHActions(ActionsCall, Actions);
+
+ // Iterate EH actions from most to least precedence, which means
+ // iterating in reverse.
+ for (auto I = Actions.rbegin(), E = Actions.rend(); I != E; ++I) {
+ ActionHandler *Action = *I;
+ if (auto *CH = dyn_cast<CatchHandler>(Action)) {
+ const auto *Filter =
+ dyn_cast<Function>(CH->getSelector()->stripPointerCasts());
+ assert((Filter || CH->getSelector()->isNullValue()) &&
+ "expected function or catch-all");
+ const auto *RecoverBA =
+ cast<BlockAddress>(CH->getHandlerBlockOrFunc());
+ MMI.addSEHCatchHandler(LPadMBB, Filter, RecoverBA);
+ } else {
+ assert(isa<CleanupHandler>(Action));
+ const auto *Fini = cast<Function>(Action->getHandlerBlockOrFunc());
+ MMI.addSEHCleanupHandler(LPadMBB, Fini);
+ }
+ }
+ DeleteContainerPointers(Actions);
+ }
+}
+
void WinEHNumbering::createUnwindMapEntry(int ToState, ActionHandler *AH) {
WinEHUnwindMapEntry UME;
UME.ToState = ToState;
/// PrepareEHLandingPad - Emit an EH_LABEL, set up live-in registers, and
/// do other setup for EH landing-pad blocks.
-void SelectionDAGISel::PrepareEHLandingPad() {
+bool SelectionDAGISel::PrepareEHLandingPad() {
MachineBasicBlock *MBB = FuncInfo->MBB;
const TargetRegisterClass *PtrRC = TLI->getRegClassFor(TLI->getPointerTy());
if (isMSVCEHPersonality(Personality)) {
SmallVector<MachineBasicBlock *, 4> ClauseBBs;
- const IntrinsicInst *Actions =
+ const IntrinsicInst *ActionsCall =
dyn_cast<IntrinsicInst>(LLVMBB->getFirstInsertionPt());
// Get all invoke BBs that unwind to this landingpad.
SmallVector<MachineBasicBlock *, 4> InvokeBBs(MBB->pred_begin(),
MBB->pred_end());
- if (Actions && Actions->getIntrinsicID() == Intrinsic::eh_actions) {
+ if (ActionsCall && ActionsCall->getIntrinsicID() == Intrinsic::eh_actions) {
// If this is a call to llvm.eh.actions followed by indirectbr, then we've
// run WinEHPrepare, and we should remove this block from the machine CFG.
// Mark the targets of the indirectbr as landingpads instead.
// Add the edge from the invoke to the clause.
for (MachineBasicBlock *InvokeBB : InvokeBBs)
InvokeBB->addSuccessor(ClauseBB);
+
+ // Mark the clause as a landing pad or MI passes will delete it.
+ ClauseBB->setIsLandingPad();
}
} else {
// Otherwise, we haven't done the preparation, and we need to invent some
// clause basic blocks that branch into the landingpad.
// FIXME: Remove this code once SEH preparation works.
+ ActionsCall = nullptr;
// Make virtual registers and a series of labels that fill in values for
// the clauses.
WinEHFuncInfo &FI = MF->getMMI().getWinEHFuncInfo(MF->getFunction());
MF->getMMI().addWinEHState(MBB, FI.LandingPadStateMap[LPadInst]);
}
- return;
+
+ // Select instructions for the landingpad if there was no llvm.eh.actions
+ // call.
+ return ActionsCall == nullptr;
}
// Mark exception register as live in.
// Mark exception selector register as live in.
if (unsigned Reg = TLI->getExceptionSelectorRegister())
FuncInfo->ExceptionSelectorVirtReg = MBB->addLiveIn(Reg, PtrRC);
+
+ return true;
}
/// isFoldedOrDeadInstruction - Return true if the specified instruction is
FuncInfo->ExceptionPointerVirtReg = 0;
FuncInfo->ExceptionSelectorVirtReg = 0;
if (LLVMBB->isLandingPad())
- PrepareEHLandingPad();
+ if (!PrepareEHLandingPad())
+ continue;
// Before doing SelectionDAG ISel, see if FastISel has been requested.
if (FastIS) {
--- /dev/null
+; RUN: llc -sehprepare < %s | FileCheck %s
+
+; Test case based on this code:
+; extern "C" unsigned long _exception_code();
+; extern "C" int filt(unsigned long);
+; extern "C" void g();
+; extern "C" void do_except() {
+; __try {
+; g();
+; } __except(filt(_exception_code())) {
+; }
+; }
+
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+; Function Attrs: uwtable
+define void @do_except() #0 {
+entry:
+ call void (...) @llvm.frameescape()
+ invoke void @g() #5
+ to label %__try.cont unwind label %lpad1
+
+lpad1: ; preds = %entry
+ %ehvals = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
+ catch i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@do_except@@" to i8*)
+ %recover = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@do_except@@" to i8*), i32 -1, i8* blockaddress(@do_except, %__try.cont))
+ indirectbr i8* %recover, [label %__try.cont]
+
+__try.cont: ; preds = %lpad1, %entry
+ ret void
+}
+
+; CHECK-LABEL: do_except:
+; CHECK: .seh_handler __C_specific_handler
+; CHECK-NOT: jmpq *
+; CHECK: .seh_handlerdata
+; CHECK-NEXT: .long 1
+; CHECK-NEXT: .long .Ltmp{{.*}}
+; CHECK-NEXT: .long .Ltmp{{.*}}
+; CHECK-NEXT: .long "?filt$0@0@do_except@@"@IMGREL
+; CHECK-NEXT: .long .Ltmp{{.*}}@IMGREL
+
+; Function Attrs: noinline nounwind
+define internal i32 @"\01?filt$0@0@do_except@@"(i8* nocapture readonly %exception_pointers, i8* nocapture readnone %frame_pointer) #1 {
+entry:
+ %0 = bitcast i8* %exception_pointers to i32**
+ %1 = load i32*, i32** %0, align 8
+ %2 = load i32, i32* %1, align 4
+ %call = tail call i32 @filt(i32 %2) #4
+ ret i32 %call
+}
+
+declare i32 @filt(i32) #2
+
+declare void @g() #2
+
+declare i32 @__C_specific_handler(...)
+
+; Function Attrs: nounwind readnone
+declare i32 @llvm.eh.typeid.for(i8*) #3
+
+; Function Attrs: nounwind
+declare i8* @llvm.eh.actions(...) #4
+
+; Function Attrs: nounwind
+declare void @llvm.frameescape(...) #4
+
+; Function Attrs: nounwind readnone
+declare i8* @llvm.framerecover(i8*, i8*, i32) #3
+
+attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" "wineh-parent"="do_except" }
+attributes #1 = { noinline nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #3 = { nounwind readnone }
+attributes #4 = { nounwind }
+attributes #5 = { noinline }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"PIC Level", i32 2}
+!1 = !{!"clang version 3.7.0 "}
+; RUN: llc -sehprepare -mtriple=x86_64-windows-msvc < %s | FileCheck %s
; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s
@str = internal unnamed_addr constant [10 x i8] c"recovered\00", align 1
--- /dev/null
+; RUN: llc -sehprepare < %s | FileCheck %s
+
+; Test case based on this source:
+; int puts(const char*);
+; __declspec(noinline) void crash() {
+; *(volatile int*)0 = 42;
+; }
+; int filt();
+; void use_both() {
+; __try {
+; __try {
+; crash();
+; } __finally {
+; puts("__finally");
+; }
+; } __except (filt()) {
+; puts("__except");
+; }
+; }
+
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+$"\01??_C@_09KJEHOMHG@__finally?$AA@" = comdat any
+
+$"\01??_C@_08MLCMLGHM@__except?$AA@" = comdat any
+
+@"\01??_C@_09KJEHOMHG@__finally?$AA@" = linkonce_odr unnamed_addr constant [10 x i8] c"__finally\00", comdat, align 1
+@"\01??_C@_08MLCMLGHM@__except?$AA@" = linkonce_odr unnamed_addr constant [9 x i8] c"__except\00", comdat, align 1
+
+declare void @crash()
+
+declare i32 @filt()
+
+; Function Attrs: nounwind uwtable
+define void @use_both() #1 {
+entry:
+ %exn.slot = alloca i8*
+ %ehselector.slot = alloca i32
+ invoke void @crash() #5
+ to label %invoke.cont unwind label %lpad
+
+invoke.cont: ; preds = %entry
+ %0 = call i8* @llvm.frameaddress(i32 0)
+ invoke void @"\01?fin$0@0@use_both@@"(i1 zeroext false, i8* %0) #5
+ to label %invoke.cont2 unwind label %lpad1
+
+invoke.cont2: ; preds = %invoke.cont
+ br label %__try.cont
+
+lpad: ; preds = %entry
+ %1 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
+ cleanup
+ catch i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@use_both@@" to i8*)
+ %2 = extractvalue { i8*, i32 } %1, 0
+ store i8* %2, i8** %exn.slot
+ %3 = extractvalue { i8*, i32 } %1, 1
+ store i32 %3, i32* %ehselector.slot
+ %4 = call i8* @llvm.frameaddress(i32 0)
+ invoke void @"\01?fin$0@0@use_both@@"(i1 zeroext true, i8* %4) #5
+ to label %invoke.cont3 unwind label %lpad1
+
+lpad1: ; preds = %lpad, %invoke.cont
+ %5 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
+ catch i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@use_both@@" to i8*)
+ %6 = extractvalue { i8*, i32 } %5, 0
+ store i8* %6, i8** %exn.slot
+ %7 = extractvalue { i8*, i32 } %5, 1
+ store i32 %7, i32* %ehselector.slot
+ br label %catch.dispatch
+
+invoke.cont3: ; preds = %lpad
+ br label %catch.dispatch
+
+catch.dispatch: ; preds = %invoke.cont3, %lpad1
+ %sel = load i32, i32* %ehselector.slot
+ %8 = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 (i8*, i8*)* @"\01?filt$0@0@use_both@@" to i8*)) #6
+ %matches = icmp eq i32 %sel, %8
+ br i1 %matches, label %__except, label %eh.resume
+
+__except: ; preds = %catch.dispatch
+ %call = call i32 @puts(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @"\01??_C@_08MLCMLGHM@__except?$AA@", i32 0, i32 0))
+ br label %__try.cont
+
+__try.cont: ; preds = %__except, %invoke.cont2
+ ret void
+
+eh.resume: ; preds = %catch.dispatch
+ %exn = load i8*, i8** %exn.slot
+ %sel4 = load i32, i32* %ehselector.slot
+ %lpad.val = insertvalue { i8*, i32 } undef, i8* %exn, 0
+ %lpad.val5 = insertvalue { i8*, i32 } %lpad.val, i32 %sel4, 1
+ resume { i8*, i32 } %lpad.val5
+}
+
+; CHECK-LABEL: use_both:
+; CHECK: .Ltmp0
+; CHECK: callq crash
+; CHECK: .Ltmp1
+; CHECK: .Ltmp3
+; CHECK: callq "?fin$0@0@use_both@@"
+; CHECK: .Ltmp4
+; CHECK: retq
+;
+; CHECK: .seh_handlerdata
+; CHECK-NEXT: .long 3
+; CHECK-NEXT: .long .Ltmp0@IMGREL
+; CHECK-NEXT: .long .Ltmp1@IMGREL+1
+; CHECK-NEXT: .long "?fin$0@0@use_both@@"@IMGREL
+; CHECK-NEXT: .long 0
+; CHECK-NEXT: .long .Ltmp0@IMGREL
+; CHECK-NEXT: .long .Ltmp1@IMGREL+1
+; CHECK-NEXT: .long "?filt$0@0@use_both@@"@IMGREL
+; CHECK-NEXT: .long .Ltmp{{[0-9]+}}@IMGREL
+; CHECK-NEXT: .long .Ltmp3@IMGREL
+; CHECK-NEXT: .long .Ltmp4@IMGREL+1
+; CHECK-NEXT: .long "?filt$0@0@use_both@@"@IMGREL
+; CHECK-NEXT: .long .Ltmp{{[0-9]+}}@IMGREL
+
+; Function Attrs: noinline nounwind
+define internal i32 @"\01?filt$0@0@use_both@@"(i8* %exception_pointers, i8* %frame_pointer) #2 {
+entry:
+ %frame_pointer.addr = alloca i8*, align 8
+ %exception_pointers.addr = alloca i8*, align 8
+ %exn.slot = alloca i8*
+ store i8* %frame_pointer, i8** %frame_pointer.addr, align 8
+ store i8* %exception_pointers, i8** %exception_pointers.addr, align 8
+ %0 = load i8*, i8** %exception_pointers.addr
+ %1 = bitcast i8* %0 to { i32*, i8* }*
+ %2 = getelementptr inbounds { i32*, i8* }, { i32*, i8* }* %1, i32 0, i32 0
+ %3 = load i32*, i32** %2
+ %4 = load i32, i32* %3
+ %5 = zext i32 %4 to i64
+ %6 = inttoptr i64 %5 to i8*
+ store i8* %6, i8** %exn.slot
+ %call = call i32 @filt()
+ ret i32 %call
+}
+
+define internal void @"\01?fin$0@0@use_both@@"(i1 zeroext %abnormal_termination, i8* %frame_pointer) #3 {
+entry:
+ %frame_pointer.addr = alloca i8*, align 8
+ %abnormal_termination.addr = alloca i8, align 1
+ store i8* %frame_pointer, i8** %frame_pointer.addr, align 8
+ %frombool = zext i1 %abnormal_termination to i8
+ store i8 %frombool, i8* %abnormal_termination.addr, align 1
+ %call = call i32 @puts(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @"\01??_C@_09KJEHOMHG@__finally?$AA@", i32 0, i32 0))
+ ret void
+}
+
+declare i32 @puts(i8*) #3
+
+declare i32 @__C_specific_handler(...)
+
+; Function Attrs: nounwind readnone
+declare i8* @llvm.frameaddress(i32) #4
+
+; Function Attrs: nounwind readnone
+declare i32 @llvm.eh.typeid.for(i8*) #4
+
+attributes #0 = { noinline nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #2 = { noinline nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #3 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #4 = { nounwind readnone }
+attributes #5 = { noinline }
+attributes #6 = { nounwind }
-; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s
+; RUN: llc -sehprepare -mtriple=x86_64-windows-msvc < %s | FileCheck %s
@str_recovered = internal unnamed_addr constant [10 x i8] c"recovered\00", align 1
unreachable
}
-; CHECK: main:
-
-; FIXME: No handlers yet!
+; CHECK-LABEL: main:
; CHECK: .seh_handlerdata
+; CHECK-NEXT: .long 1
+; CHECK-NEXT: .long .Ltmp0@IMGREL
+; CHECK-NEXT: .long .Ltmp1@IMGREL
+; CHECK-NEXT: .long main.cleanup@IMGREL
; CHECK-NEXT: .long 0
+; CHECK-LABEL: main.cleanup:
+; CHECK: callq puts
+; CHECK: retq
+
declare i32 @__C_specific_handler(...)
declare i32 @puts(i8*)
-; RUN: llc -mtriple x86_64-pc-windows-msvc < %s | FileCheck %s
+; RUN: llc -sehprepare -mtriple x86_64-pc-windows-msvc < %s | FileCheck %s
; This test case is also intended to be run manually as a complete functional
; test. It should link, print something, and exit zero rather than crashing.
; CHECK: leaq [[rloc:.*\(%rsp\)]], %rcx
; CHECK: callq try_body
; CHECK-NEXT: .Ltmp1
-; CHECK: .LBB0_7:
+; CHECK: [[cont_bb:\.LBB0_[0-9]+]]:
; CHECK: movl [[rloc]], %eax
; CHECK: retq
; Landing pad code
-; CHECK: .Ltmp3:
-; CHECK: movl $1, %[[sel:[a-z]+]]
-; CHECK: .Ltmp4
-; CHECK: movl $2, %[[sel]]
-; CHECK: .L{{.*}}:
-; CHECK: cmpl $1, %[[sel]]
-
+; CHECK: [[handler0:\.Ltmp[0-9]+]]: # Block address taken
; CHECK: # %handler0
; CHECK: callq puts
; CHECK: movl $-1, [[rloc]]
-; CHECK: jmp .LBB0_7
-
-; CHECK: cmpl $2, %[[sel]]
+; CHECK: jmp [[cont_bb]]
+; CHECK: [[handler1:\.Ltmp[0-9]+]]: # Block address taken
; CHECK: # %handler1
; CHECK: callq puts
; CHECK: movl $-2, [[rloc]]
-; CHECK: jmp .LBB0_7
-
-; FIXME: EH preparation should eliminate the 'resume' instr and we should not do
-; the previous 'cmp;jeq'.
-; CHECK-NOT: _Unwind_Resume
-; CHECK: ud2
+; CHECK: jmp [[cont_bb]]
; CHECK: .seh_handlerdata
-; CHECK: .long 2
-; CHECK: .long .Ltmp0@IMGREL
-; CHECK: .long .Ltmp1@IMGREL+1
-; CHECK: .long safe_div_filt0@IMGREL
-; CHECK: .long .Ltmp3@IMGREL
-; CHECK: .long .Ltmp0@IMGREL
-; CHECK: .long .Ltmp1@IMGREL+1
-; CHECK: .long safe_div_filt1@IMGREL
-; CHECK: .long .Ltmp4@IMGREL
+; CHECK-NEXT: .long 2
+; CHECK-NEXT: .long .Ltmp0@IMGREL
+; CHECK-NEXT: .long .Ltmp1@IMGREL+1
+; CHECK-NEXT: .long safe_div_filt0@IMGREL
+; CHECK-NEXT: .long [[handler0]]@IMGREL
+; CHECK-NEXT: .long .Ltmp0@IMGREL
+; CHECK-NEXT: .long .Ltmp1@IMGREL+1
+; CHECK-NEXT: .long safe_div_filt1@IMGREL
+; CHECK-NEXT: .long [[handler1]]@IMGREL
; CHECK: .text
; CHECK: .seh_endproc
ret i32 0
}
-define void @_Unwind_Resume() {
- call void @abort()
- unreachable
-}
-
declare i32 @__C_specific_handler(...)
declare i32 @llvm.eh.typeid.for(i8*) readnone nounwind
declare void @puts(i8*)
-; RUN: opt -S -winehprepare -dwarfehprepare -mtriple x86_64-pc-windows-msvc < %s | FileCheck %s
+; RUN: opt -S -winehprepare -sehprepare -dwarfehprepare -mtriple x86_64-pc-windows-msvc < %s | FileCheck %s
; FIXME: Add and test outlining here.
; CHECK-LABEL: define i32 @use_seh()
; CHECK: invoke void @maybe_throw()
; CHECK-NEXT: to label %cont unwind label %lpad
-; CHECK: eh.resume:
-; CHECK-NEXT: unreachable
+; CHECK: landingpad
+; CHECK-NEXT: cleanup
+; CHECK-NEXT: catch
+; CHECK-NEXT: call i8* (...) @llvm.eh.actions({{.*}})
; A MinGW64-ish EH style. It could happen if a binary uses both MSVC CRT and
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