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Stop calling DwarfEHPrepare from WinEHPrepare

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Instead, run both EH preparation passes, and have them both ignore
functions with unrecognized EH personalities. Pass delegation involved
some hacky code for creating an AnalysisResolver that we don't need now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231995 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Kleckner
2015-03-12 00:36:20 +00:00
parent 9a062b62a7
commit 7dedaabcae
6 changed files with 50 additions and 54 deletions
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13
lib/CodeGen/DwarfEHPrepare.cpp
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@ -16,6 +16,7 @@
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/CFG.h"
#include "llvm/Analysis/LibCallSemantics.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/Function.h"
@ -180,12 +181,22 @@ size_t DwarfEHPrepare::pruneUnreachableResumes(
bool DwarfEHPrepare::InsertUnwindResumeCalls(Function &Fn) {
SmallVector<ResumeInst*, 16> Resumes;
SmallVector<LandingPadInst*, 16> CleanupLPads;
bool FoundLP = false;
for (BasicBlock &BB : Fn) {
if (auto *RI = dyn_cast<ResumeInst>(BB.getTerminator()))
Resumes.push_back(RI);
if (auto *LP = BB.getLandingPadInst())
if (auto *LP = BB.getLandingPadInst()) {
if (LP->isCleanup())
CleanupLPads.push_back(LP);
// Check the personality on the first landingpad. Don't do anything if
// it's for MSVC.
if (!FoundLP) {
FoundLP = true;
EHPersonality Pers = classifyEHPersonality(LP->getPersonalityFn());
if (isMSVCEHPersonality(Pers))
return false;
}
}
}
if (Resumes.empty())