================
@@ -1908,6 +1908,176 @@ static bool SemaOpenCLBuiltinToAddr(Sema &S, unsigned
BuiltinID,
return false;
}
+namespace {
+ enum PointerAuthOpKind {
+ PAO_Strip, PAO_Sign, PAO_Auth, PAO_SignGeneric, PAO_Discriminator,
+ PAO_BlendPointer, PAO_BlendInteger
+ };
+}
+
+static bool checkPointerAuthEnabled(Sema &S, Expr *E) {
+ if (S.getLangOpts().PointerAuthIntrinsics)
+ return false;
+
+ S.Diag(E->getExprLoc(), diag::err_ptrauth_disabled) << E->getSourceRange();
+ return true;
+}
+
+static bool checkPointerAuthKey(Sema &S, Expr *&Arg) {
+ // Convert it to type 'int'.
+ if (convertArgumentToType(S, Arg, S.Context.IntTy))
+ return true;
+
+ // Value-dependent expressions are okay; wait for template instantiation.
+ if (Arg->isValueDependent())
+ return false;
+
+ unsigned KeyValue;
+ return S.checkConstantPointerAuthKey(Arg, KeyValue);
+}
+
+bool Sema::checkConstantPointerAuthKey(Expr *Arg, unsigned &Result) {
+ // Attempt to constant-evaluate the expression.
+ std::optional<llvm::APSInt> KeyValue = Arg->getIntegerConstantExpr(Context);
+ if (!KeyValue) {
+ Diag(Arg->getExprLoc(), diag::err_expr_not_ice) << 0
+ << Arg->getSourceRange();
+ return true;
+ }
+
+ // Ask the target to validate the key parameter.
+ if (!Context.getTargetInfo().validatePointerAuthKey(*KeyValue)) {
+ llvm::SmallString<32> Value; {
+ llvm::raw_svector_ostream Str(Value);
+ Str << *KeyValue;
+ }
+
+ Diag(Arg->getExprLoc(), diag::err_ptrauth_invalid_key)
+ << Value << Arg->getSourceRange();
+ return true;
+ }
+
+ Result = KeyValue->getZExtValue();
+ return false;
+}
+
+static bool checkPointerAuthValue(Sema &S, Expr *&Arg,
+ PointerAuthOpKind OpKind) {
+ if (Arg->hasPlaceholderType()) {
+ ExprResult R = S.CheckPlaceholderExpr(Arg);
+ if (R.isInvalid()) return true;
+ Arg = R.get();
+ }
+
+ auto allowsPointer = [](PointerAuthOpKind OpKind) {
+ return OpKind != PAO_BlendInteger;
+ };
+ auto allowsInteger = [](PointerAuthOpKind OpKind) {
----------------
atrosinenko wrote:
Local variable name starts with lower case.
https://github.com/llvm/llvm-project/pull/65996
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