From e6012c7ecb9d848f4091c8c48e7d9946cc36b23f Mon Sep 17 00:00:00 2001
From: Fariborz Jahanian <fjahanian@apple.com>
Date: Thu, 7 Oct 2010 21:25:25 +0000
Subject: [PATCH] Fix a crash encoding ivars of vector types and to match gcc's
 encoding. Fixes //rdar: // 8519948.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115980 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/AST/ASTContext.cpp       | 11 +++++++++--
 test/CodeGenObjCXX/encode.mm | 12 ++++++++++++
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index cf75474a19..0e549dddcd 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -3894,7 +3894,7 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string& S,
     S += RDecl->isUnion() ? ')' : '}';
     return;
   }
-
+  
   if (T->isEnumeralType()) {
     if (FD && FD->isBitField())
       EncodeBitField(this, S, T, FD);
@@ -3997,7 +3997,14 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string& S,
   // TODO: maybe there should be a mangling for these
   if (T->getAs<MemberPointerType>())
     return;
-
+  
+  if (T->isVectorType()) {
+    // This matches gcc's encoding, even though technically it is
+    // insufficient.
+    // FIXME. We should do a better job than gcc.
+    return;
+  }
+  
   assert(0 && "@encode for type not implemented!");
 }
 
diff --git a/test/CodeGenObjCXX/encode.mm b/test/CodeGenObjCXX/encode.mm
index 83fb31e16d..5a49feb706 100644
--- a/test/CodeGenObjCXX/encode.mm
+++ b/test/CodeGenObjCXX/encode.mm
@@ -50,3 +50,15 @@ class Int3 { int x, y, z; };
 - (void) foo: (int (Int3::*)) member {
 }
 @end
+
+// rdar: // 8519948
+typedef float HGVec4f __attribute__ ((vector_size(16)));
+
+@interface RedBalloonHGXFormWrapper {
+  HGVec4f m_Transform[4];
+}
+@end
+
+@implementation RedBalloonHGXFormWrapper
+@end
+
-- 
2.40.0