[AArch64] Add aarch64_vector_pcs function attribute to Clang

This is the Clang patch to complement the following LLVM patches:
  https://reviews.llvm.org/D51477
  https://reviews.llvm.org/D51479

More information describing the vector ABI and procedure call standard
can be found here:

https://developer.arm.com/products/software-development-tools/\
                          hpc/arm-compiler-for-hpc/vector-function-abi

Patch by Kerry McLaughlin.

Reviewed By: rjmccall

Differential Revision: https://reviews.llvm.org/D54425


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@347571 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 17 insertions, 8 deletions

diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index b77b77d9ba..9f5325d109 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -4291,6 +4291,11 @@ static void handleCallConvAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
                        AL.getAttributeSpellingListIndex()));
     return;
   }
+  case ParsedAttr::AT_AArch64VectorPcs:
+    D->addAttr(::new(S.Context)
+               AArch64VectorPcsAttr(AL.getRange(), S.Context,
+                                    AL.getAttributeSpellingListIndex()));
+    return;
   case ParsedAttr::AT_IntelOclBicc:
     D->addAttr(::new (S.Context)
                IntelOclBiccAttr(AL.getRange(), S.Context,
@@ -4368,6 +4373,9 @@ bool Sema::CheckCallingConvAttr(const ParsedAttr &Attrs, CallingConv &CC,
   case ParsedAttr::AT_VectorCall:
     CC = CC_X86VectorCall;
     break;
+  case ParsedAttr::AT_AArch64VectorPcs:
+    CC = CC_AArch64VectorCall;
+    break;
   case ParsedAttr::AT_RegCall:
     CC = CC_X86RegCall;
     break;
@@ -5840,14 +5848,14 @@ static void handleDeprecatedAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
   if (AL.isDeclspecAttribute() || AL.isCXX11Attribute())
     checkAttributeAtMostNumArgs(S, AL, 1);
   else if (AL.isArgExpr(1) && AL.getArgAsExpr(1) &&
-           !S.checkStringLiteralArgumentAttr(AL, 1, Replacement))

-    return;

-

-  if (!S.getLangOpts().CPlusPlus14 && AL.isCXX11Attribute() && !AL.isGNUScope())

-    S.Diag(AL.getLoc(), diag::ext_cxx14_attr) << AL;

-

-  D->addAttr(::new (S.Context)

-                 DeprecatedAttr(AL.getRange(), S.Context, Str, Replacement,

+           !S.checkStringLiteralArgumentAttr(AL, 1, Replacement))
+    return;
+
+  if (!S.getLangOpts().CPlusPlus14 && AL.isCXX11Attribute() && !AL.isGNUScope())
+    S.Diag(AL.getLoc(), diag::ext_cxx14_attr) << AL;
+
+  D->addAttr(::new (S.Context)
+                 DeprecatedAttr(AL.getRange(), S.Context, Str, Replacement,
                                 AL.getAttributeSpellingListIndex()));
 }
 
@@ -6493,6 +6501,7 @@ static void ProcessDeclAttribute(Sema &S, Scope *scope, Decl *D,
   case ParsedAttr::AT_IntelOclBicc:
   case ParsedAttr::AT_PreserveMost:
   case ParsedAttr::AT_PreserveAll:
+  case ParsedAttr::AT_AArch64VectorPcs:
     handleCallConvAttr(S, D, AL);
     break;
   case ParsedAttr::AT_Suppress: