================
@@ -2061,6 +2071,58 @@ ConstantLValueEmitter::VisitCallExpr(const CallExpr *E) {
}
}
+ConstantLValue
+ConstantLValueEmitter::emitPointerAuthSignConstant(const CallExpr *E) {
+ llvm::Constant *UnsignedPointer = emitPointerAuthPointer(E->getArg(0));
+ unsigned Key = emitPointerAuthKey(E->getArg(1));
+ llvm::Constant *StorageAddress;
+ llvm::Constant *OtherDiscriminator;
+ std::tie(StorageAddress, OtherDiscriminator) =
+ emitPointerAuthDiscriminator(E->getArg(2));
+
+ llvm::Constant *SignedPointer = CGM.getConstantSignedPointer(
+ UnsignedPointer, Key, StorageAddress, OtherDiscriminator);
+ return SignedPointer;
+}
+
+llvm::Constant *ConstantLValueEmitter::emitPointerAuthPointer(const Expr *E) {
+ Expr::EvalResult Result;
+ bool Succeeded = E->EvaluateAsRValue(Result, CGM.getContext());
+ assert(Succeeded);
+ (void)Succeeded;
+
+ // The assertions here are all checked by Sema.
+ assert(Result.Val.isLValue());
+ return ConstantEmitter(CGM, Emitter.CGF)
+ .emitAbstract(E->getExprLoc(), Result.Val, E->getType());
+}
+
+unsigned ConstantLValueEmitter::emitPointerAuthKey(const Expr *E) {
+ return E->EvaluateKnownConstInt(CGM.getContext()).getZExtValue();
+}
+
+std::pair<llvm::Constant *, llvm::Constant *>
+ConstantLValueEmitter::emitPointerAuthDiscriminator(const Expr *E) {
+ E = E->IgnoreParens();
+
+ if (auto *Call = dyn_cast<CallExpr>(E)) {
+ if (Call->getBuiltinCallee() ==
+ Builtin::BI__builtin_ptrauth_blend_discriminator) {
+ llvm::Constant *Pointer = ConstantEmitter(CGM).emitAbstract(
+ Call->getArg(0), Call->getArg(0)->getType());
+ llvm::Constant *Extra = ConstantEmitter(CGM).emitAbstract(
+ Call->getArg(1), Call->getArg(1)->getType());
+ return {Pointer, Extra};
+ }
+ }
+
+ llvm::Constant *Result = ConstantEmitter(CGM).emitAbstract(E, E->getType());
+ if (Result->getType()->isPointerTy())
+ return {Result, nullptr};
+ else
----------------
kovdan01 wrote:
Do not use else after return
https://github.com/llvm/llvm-project/pull/93904
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