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Re-land r235154-r235156 under the existing -sehprepare flag

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Keep the old SEH fan-in lowering on by default for now, since projects
rely on it.  This will make it easy to test this change with a simple
flag flip.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235399 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Kleckner
2015-04-21 18:23:57 +00:00
parent 9e0a1565b9
commit 405cc64eac
13 changed files with 420 additions and 48 deletions
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19
lib/CodeGen/MachineModuleInfo.cpp
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@@ -469,6 +469,25 @@ MachineModuleInfo::addClauseForLandingPad(MachineBasicBlock *LandingPad) {
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) {