From 770951b5bb6028a8d326ddb4a13cef7d4a128162 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 1 Nov 2007 05:03:41 +0000
Subject: [PATCH] add support for vector type compatibility checking. Patch by
 Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43604 91177308-0d34-0410-b5e6-96231b3b80d8
---
 AST/ASTContext.cpp              | 16 +++++++++++++++-
 clang.xcodeproj/project.pbxproj |  1 +
 include/clang/AST/ASTContext.h  |  1 +
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/AST/ASTContext.cpp b/AST/ASTContext.cpp
index b83d33da7c..266871b6f0 100644
--- a/AST/ASTContext.cpp
+++ b/AST/ASTContext.cpp
@@ -784,7 +784,7 @@ static int getFloatingRank(QualType T) {
     return getFloatingRank(CT->getElementType());
   
   switch (cast<BuiltinType>(T)->getKind()) {
-  default:  assert(0 && "getFloatingPointRank(): not a floating type");
+  default:  assert(0 && "getFloatingRank(): not a floating type");
   case BuiltinType::Float:      return FloatRank;
   case BuiltinType::Double:     return DoubleRank;
   case BuiltinType::LongDouble: return LongDoubleRank;
@@ -1141,6 +1141,17 @@ bool ASTContext::interfaceTypesAreCompatible(QualType lhs, QualType rhs) {
   return true; // FIXME: IMPLEMENT.
 }
 
+bool ASTContext::vectorTypesAreCompatible(QualType lhs, QualType rhs) {
+  const VectorType *lVector = lhs->getAsVectorType();
+  const VectorType *rVector = rhs->getAsVectorType();
+  
+  if ((lVector->getElementType().getCanonicalType() ==
+      rVector->getElementType().getCanonicalType()) &&
+      (lVector->getNumElements() == rVector->getNumElements()))
+    return true;
+  return false;
+}
+
 // C99 6.2.7p1: If both are complete types, then the following additional
 // requirements apply...FIXME (handle compatibility across source files).
 bool ASTContext::tagTypesAreCompatible(QualType lhs, QualType rhs) {
@@ -1279,6 +1290,9 @@ bool ASTContext::typesAreCompatible(QualType lhs, QualType rhs) {
       return builtinTypesAreCompatible(lcanon, rcanon); 
     case Type::ObjcInterface:
       return interfaceTypesAreCompatible(lcanon, rcanon); 
+    case Type::Vector:
+    case Type::OCUVector:
+      return vectorTypesAreCompatible(lcanon, rcanon);
     default:
       assert(0 && "unexpected type");
   }
diff --git a/clang.xcodeproj/project.pbxproj b/clang.xcodeproj/project.pbxproj
index de41b4628d..fe4cf8d85b 100644
--- a/clang.xcodeproj/project.pbxproj
+++ b/clang.xcodeproj/project.pbxproj
@@ -756,6 +756,7 @@
 		08FB7793FE84155DC02AAC07 /* Project object */ = {
 			isa = PBXProject;
 			buildConfigurationList = 1DEB923508733DC60010E9CD /* Build configuration list for PBXProject "clang" */;
+			compatibilityVersion = "Xcode 2.4";
 			hasScannedForEncodings = 1;
 			mainGroup = 08FB7794FE84155DC02AAC07 /* clang */;
 			projectDirPath = "";
diff --git a/include/clang/AST/ASTContext.h b/include/clang/AST/ASTContext.h
index 8e92c7c245..f4c5d02988 100644
--- a/include/clang/AST/ASTContext.h
+++ b/include/clang/AST/ASTContext.h
@@ -267,6 +267,7 @@ public:
   bool functionTypesAreCompatible(QualType, QualType); // C99 6.7.5.3p15
   bool arrayTypesAreCompatible(QualType, QualType); // C99 6.7.5.2p6
   bool builtinTypesAreCompatible(QualType, QualType);
+  bool vectorTypesAreCompatible(QualType, QualType);
   
   /// Objective-C specific type checking.
   bool interfaceTypesAreCompatible(QualType, QualType);
-- 
2.40.0