1 files changed, 29 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index b2be6245a81..cebb1c642b9 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -23,6 +23,7 @@
 #include "clang/AST/RecursiveASTVisitor.h"
 #include "clang/Basic/CharInfo.h"
 #include "clang/Basic/SourceManager.h"
+#include "clang/Basic/TargetBuiltins.h"
 #include "clang/Basic/TargetInfo.h"
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Sema/DeclSpec.h"
@@ -4830,6 +4831,30 @@ static void handleXRayLogArgsAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
                  XRayLogArgsAttr(S.Context, AL, ArgCount.getSourceIndex()));
 }
 
+static bool ArmMveAliasValid(unsigned BuiltinID, StringRef AliasName) {
+  // FIXME: this will be filled in by Tablegen which isn't written yet
+  return false;
+}
+
+static void handleArmMveAliasAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
+  if (!AL.isArgIdent(0)) {
+    S.Diag(AL.getLoc(), diag::err_attribute_argument_n_type)
+        << AL << 1 << AANT_ArgumentIdentifier;
+    return;
+  }
+
+  IdentifierInfo *Ident = AL.getArgAsIdent(0)->Ident;
+  unsigned BuiltinID = Ident->getBuiltinID();
+
+  if (!ArmMveAliasValid(BuiltinID,
+                        cast<FunctionDecl>(D)->getIdentifier()->getName())) {
+    S.Diag(AL.getLoc(), diag::err_attribute_arm_mve_alias);
+    return;
+  }
+
+  D->addAttr(::new (S.Context) ArmMveAliasAttr(S.Context, AL, Ident));
+}
+
 //===----------------------------------------------------------------------===//
 // Checker-specific attribute handlers.
 //===----------------------------------------------------------------------===//
@@ -7160,6 +7185,10 @@ static void ProcessDeclAttribute(Sema &S, Scope *scope, Decl *D,
   case ParsedAttr::AT_MSAllocator:
     handleMSAllocatorAttr(S, D, AL);
     break;
+
+  case ParsedAttr::AT_ArmMveAlias:
+    handleArmMveAliasAttr(S, D, AL);
+    break;
   }
 }