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New EH representation for MSVC compatibility

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Summary:
This introduces new instructions neccessary to implement MSVC-compatible
exception handling support.  Most of the middle-end and none of the
back-end haven't been audited or updated to take them into account.

Reviewers: rnk, JosephTremoulet, reames, nlewycky, rjmccall

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11041

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241888 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer
2015-07-10 07:00:44 +00:00
parent 86ef198476
commit 751c4be705
35 changed files with 2042 additions and 91 deletions
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30
lib/Transforms/Instrumentation/MemorySanitizer.cpp
View File

@ -2653,6 +2653,26 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
setOrigin(&I, getCleanOrigin());
}
void visitCleanupBlockInst(CleanupBlockInst &I) {
setShadow(&I, getCleanShadow(&I));
setOrigin(&I, getCleanOrigin());
}
void visitCatchBlock(CatchBlockInst &I) {
setShadow(&I, getCleanShadow(&I));
setOrigin(&I, getCleanOrigin());
}
void visitTerminateBlock(TerminateBlockInst &I) {
setShadow(&I, getCleanShadow(&I));
setOrigin(&I, getCleanOrigin());
}
void visitCatchEndBlockInst(CatchEndBlockInst &I) {
setShadow(&I, getCleanShadow(&I));
setOrigin(&I, getCleanOrigin());
}
void visitGetElementPtrInst(GetElementPtrInst &I) {
handleShadowOr(I);
}
@ -2696,6 +2716,16 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
// Nothing to do here.
}
void visitCleanupReturnInst(CleanupReturnInst &CRI) {
DEBUG(dbgs() << "CleanupReturn: " << CRI << "\n");
// Nothing to do here.
}
void visitCatchReturnInst(CatchReturnInst &CRI) {
DEBUG(dbgs() << "CatchReturn: " << CRI << "\n");
// Nothing to do here.
}
void visitInstruction(Instruction &I) {
// Everything else: stop propagating and check for poisoned shadow.
if (ClDumpStrictInstructions)