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[WinEH] Fill out CatchHigh in the TryBlockMap

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Now all fields in the WinEH xdata have been filled out.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234067 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer 2015-04-03 23:37:34 +00:00
parent f259550935
commit 45221a75fb
4 changed files with 12 additions and 9 deletions
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2
include/llvm/CodeGen/WinEHFuncInfo.h
View File

@ -128,7 +128,6 @@ struct WinEHHandlerType {
struct WinEHTryBlockMapEntry {
int TryLow;
int TryHigh;
int CatchHigh;
SmallVector<WinEHHandlerType, 1> HandlerArray;
};
@ -136,6 +135,7 @@ struct WinEHFuncInfo {
DenseMap<const LandingPadInst *, int> LandingPadStateMap;
DenseMap<const Function *, int> CatchHandlerParentFrameObjIdx;
DenseMap<const Function *, int> CatchHandlerParentFrameObjOffset;
DenseMap<const Function *, int> CatchHandlerMaxState;
SmallVector<WinEHUnwindMapEntry, 4> UnwindMap;
SmallVector<WinEHTryBlockMapEntry, 4> TryBlockMap;
SmallVector<std::pair<MCSymbol *, int>, 4> IPToStateList;

9
lib/CodeGen/AsmPrinter/Win64Exception.cpp
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@ -421,11 +421,16 @@ void Win64Exception::emitCXXFrameHandler3Table(const MachineFunction *MF) {
HandlerMaps.push_back(HandlerMapXData);
int CatchHigh = -1;
for (WinEHHandlerType &HT : TBME.HandlerArray)
CatchHigh =
std::max(CatchHigh, FuncInfo.CatchHandlerMaxState[HT.Handler]);
assert(TBME.TryLow <= TBME.TryHigh);
assert(TBME.CatchHigh > TBME.TryHigh);
assert(CatchHigh > TBME.TryHigh);
OS.EmitIntValue(TBME.TryLow, 4); // TryLow
OS.EmitIntValue(TBME.TryHigh, 4); // TryHigh
OS.EmitIntValue(TBME.CatchHigh, 4); // CatchHigh
OS.EmitIntValue(CatchHigh, 4); // CatchHigh
OS.EmitIntValue(TBME.HandlerArray.size(), 4); // NumCatches
OS.EmitValue(createImageRel32(HandlerMapXData), 4); // HandlerArray
}

6
lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
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@ -300,11 +300,7 @@ void WinEHNumbering::createTryBlockMapEntry(int TryLow, int TryHigh,
WinEHTryBlockMapEntry TBME;
TBME.TryLow = TryLow;
TBME.TryHigh = TryHigh;
// FIXME: This should be revisited when we want to throw inside a catch
// handler.
TBME.CatchHigh = INT_MAX;
assert(TBME.TryLow <= TBME.TryHigh);
assert(TBME.CatchHigh > TBME.TryHigh);
for (CatchHandler *CH : Handlers) {
WinEHHandlerType HT;
if (CH->getSelector()->isNullValue()) {
@ -444,6 +440,8 @@ void WinEHNumbering::calculateStateNumbers(const Function &F) {
ActionList.clear();
FuncInfo.LandingPadStateMap[LPI] = currentEHNumber();
}
FuncInfo.CatchHandlerMaxState[&F] = NextState - 1;
}
/// clear - Clear out all the function-specific state. This returns this

4
test/CodeGen/WinEH/cppeh-prepared-catch.ll
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@ -137,12 +137,12 @@ try.cont8: ; preds = %lpad2, %try.cont
; CHECK-NEXT:"$tryMap$?f@@YAXXZ":
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long 2147483647
; CHECK-NEXT: .long 2
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long ("$handlerMap$0$?f@@YAXXZ")@IMGREL
; CHECK-NEXT: .long 0
; CHECK-NEXT: .long 2
; CHECK-NEXT: .long 2147483647
; CHECK-NEXT: .long 3
; CHECK-NEXT: .long 1
; CHECK-NEXT: .long ("$handlerMap$1$?f@@YAXXZ")@IMGREL
; CHECK-NEXT:"$handlerMap$0$?f@@YAXXZ":