Check compatibility of vector types using their canonicalizations.

Fixes an assertion arising C overload analysis, but really I can't imagine
that this wouldn't cause a thousand other uncaught failures.

Fixes PR6600.

llvm-svn: 98400

1 files changed, 10 insertions, 1 deletions

diff --git a/clang/test/Sema/overloadable.c b/clang/test/Sema/overloadable.c
index ff631ed9c85..28c3e4cf8c9 100644
--- a/clang/test/Sema/overloadable.c
+++ b/clang/test/Sema/overloadable.c
@@ -50,4 +50,13 @@ void test_promote(short* sp) {
   promote(sp); // expected-error{{call to unavailable function 'promote'}}
 }
 
-
+// PR6600
+typedef double Double;
+typedef Double DoubleVec __attribute__((vector_size(16)));
+typedef int Int;
+typedef Int IntVec __attribute__((vector_size(16)));
+double magnitude(DoubleVec) __attribute__((__overloadable__));
+double magnitude(IntVec) __attribute__((__overloadable__));
+double test_p6600(DoubleVec d) {
+  return magnitude(d) * magnitude(d);
+}