pcc added a comment.
Please add documentation. At the very least please document flags in
`docs/ControlFlowIntegrity.rst` and `docs/UsersManual.rst`. We should also
document the design in `docs/ControlFlowIntegrityDesign.rst`.
================
Comment at: lib/CodeGen/CGExpr.cpp:3868
@@ +3867,3 @@
+ isa<llvm::MDNode>(MD) && dyn_cast<llvm::MDNode>(MD)->isDistinct();
+ if (CGM.getCodeGenOpts().SanitizeCfiCrossDso && !hasLocalScope) {
+ EmitCfiSlowPathCheck(BitSetTest, MD, CastedCallee);
----------------
Yes, sorry.
================
Comment at: lib/CodeGen/CodeGenModule.cpp:1037
@@ -972,15 +1036,3 @@
- // If we are checking indirect calls and this is not a non-static member
- // function, emit a bit set entry for the function type.
- if (LangOpts.Sanitize.has(SanitizerKind::CFIICall) &&
- !(isa<CXXMethodDecl>(FD) && !cast<CXXMethodDecl>(FD)->isStatic())) {
- llvm::NamedMDNode *BitsetsMD =
- getModule().getOrInsertNamedMetadata("llvm.bitsets");
-
- llvm::Metadata *BitsetOps[] = {
- CreateMetadataIdentifierForType(FD->getType()),
- llvm::ConstantAsMetadata::get(F),
- llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(Int64Ty, 0))};
- BitsetsMD->addOperand(llvm::MDTuple::get(getLLVMContext(), BitsetOps));
- }
+ CreateFunctionBitSetEntry(FD, F);
}
----------------
Yes, that's because you fixed it :)
================
Comment at: lib/CodeGen/CodeGenModule.cpp:1041
@@ -988,3 +1040,3 @@
void CodeGenModule::addUsedGlobal(llvm::GlobalValue *GV) {
assert(!GV->isDeclaration() &&
"Only globals with definition can force usage.");
----------------
What about callers of `EmitCfiSlowPathCheck`?
Repository:
rL LLVM
http://reviews.llvm.org/D15367
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