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Add an ivar that maps a landing pad's EH symbol to the call sites that may jump

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to the landing pad. This will be used by the back-end to generate the jump
tables for dispatching the arriving longjmp in sjlj eh.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141224 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-10-05 22:20:38 +00:00
parent 6f500541ea
commit 84fb7dd09e
2 changed files with 22 additions and 0 deletions
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14
include/llvm/CodeGen/MachineModuleInfo.h
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@ -119,6 +119,10 @@ class MachineModuleInfo : public ImmutablePass {
/// information in the current function.
std::vector<LandingPadInfo> LandingPads;
/// LPadToCallSiteMap - Map a landing pad's EH symbol to the call site
/// indexes.
DenseMap<MCSymbol*, SmallVector<unsigned, 4> > LPadToCallSiteMap;
/// CallSiteMap - Map of invoke call site index values to associated begin
/// EH_LABEL for the current function.
DenseMap<MCSymbol*, unsigned> CallSiteMap;
@ -327,6 +331,16 @@ public:
return LandingPads;
}
/// setCallSiteLandingPad - Map the landing pad's EH symbol to the call
/// site indexes.
void setCallSiteLandingPad(MCSymbol *Sym, ArrayRef<unsigned> Sites);
/// getCallSiteLandingPad - Get the call site indexes for a landing pad EH
/// symbol.
SmallVectorImpl<unsigned> &getCallSiteLandingPad(MCSymbol *Sym) {
return LPadToCallSiteMap[Sym];
}
/// setCallSiteBeginLabel - Map the begin label for a call site.
void setCallSiteBeginLabel(MCSymbol *BeginLabel, unsigned Site) {
CallSiteMap[BeginLabel] = Site;

8
lib/CodeGen/MachineModuleInfo.cpp
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@ -499,6 +499,14 @@ void MachineModuleInfo::TidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap) {
}
}
/// setCallSiteLandingPad - Map the landing pad's EH symbol to the call site
/// indexes.
void MachineModuleInfo::setCallSiteLandingPad(MCSymbol *Sym,
ArrayRef<unsigned> Sites) {
for (unsigned I = 0, E = Sites.size(); I != E; ++I)
LPadToCallSiteMap[Sym].push_back(Sites[I]);
}
/// getTypeIDFor - Return the type id for the specified typeinfo. This is
/// function wide.
unsigned MachineModuleInfo::getTypeIDFor(const GlobalVariable *TI) {