[llvm-branch-commits] [clang] [Clang] Add pointer field protection feature. (PR #172119)

[Florian Mayer via llvm-branch-commits]

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@@ -4761,6 +4762,36 @@ void CodeGenModule::emitMultiVersionFunctions() {
     emitMultiVersionFunctions();
 }
 
+llvm::GlobalValue *
+CodeGenModule::getPFPDeactivationSymbol(const FieldDecl *FD) {
+  std::string DSName = "__pfp_ds_" + getPFPFieldName(FD);
+  llvm::GlobalValue *DS = TheModule.getNamedValue(DSName);
+  if (!DS) {
+    DS = new llvm::GlobalVariable(TheModule, Int8Ty, false,
+                                  llvm::GlobalVariable::ExternalWeakLinkage,
+                                  nullptr, DSName);
+    DS->setVisibility(llvm::GlobalValue::HiddenVisibility);
+  }
+  return DS;
+}
+
+void CodeGenModule::emitPFPFieldsWithEvaluatedOffset() {
+  llvm::Constant *Nop = llvm::ConstantExpr::getIntToPtr(
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fmayer wrote:

add a comment for this magic value

https://github.com/llvm/llvm-project/pull/172119