From f62f9cd5a78e5445a02e37b277f7a2df9c19b7a3 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 7 Apr 2008 05:36:14 +0000
Subject: [PATCH] simplify vector type compatibility testing.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49314 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/clang/AST/ASTContext.h |  1 -
 lib/AST/ASTContext.cpp         | 19 ++++++++-----------
 2 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/include/clang/AST/ASTContext.h b/include/clang/AST/ASTContext.h
index bec9efa2b1..9f1caf4829 100644
--- a/include/clang/AST/ASTContext.h
+++ b/include/clang/AST/ASTContext.h
@@ -333,7 +333,6 @@ 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);
   
   bool objcTypesAreCompatible(QualType, QualType);
   bool isObjCIdType(QualType T) const {
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 439a99c4b2..31537947a0 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -1507,16 +1507,13 @@ areCompatObjCQualInterfaces(const ObjCQualifiedInterfaceType *LHS,
   return false;
 }
 
-
-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;
+/// areCompatVectorTypes - Return true if the two specified vector types are 
+/// compatible.
+static bool areCompatVectorTypes(const VectorType *LHS,
+                                 const VectorType *RHS) {
+  assert(LHS->isCanonical() && RHS->isCanonical());
+  return LHS->getElementType() == RHS->getElementType() &&
+         LHS->getNumElements() == RHS->getNumElements();
 }
 
 // C99 6.2.7p1: If both are complete types, then the following additional
@@ -1704,7 +1701,7 @@ bool ASTContext::typesAreCompatible(QualType LHS_NC, QualType RHS_NC) {
                                    cast<ObjCInterfaceType>(RHS)->getDecl());
   case Type::Vector:
   case Type::OCUVector:
-    return vectorTypesAreCompatible(LHS, RHS);
+    return areCompatVectorTypes(cast<VectorType>(LHS), cast<VectorType>(RHS));
   case Type::ObjCQualifiedInterface:
     return areCompatObjCQualInterfaces(cast<ObjCQualifiedInterfaceType>(LHS),
                                        cast<ObjCQualifiedInterfaceType>(RHS));
-- 
2.40.0