Add support for AVX registers to clang inline asm. Add a small testcase
and update the Sema testcase with a register that we won't hit for a while
I hope.

Fixes rdar://10510405

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145671 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/asm.c b/test/Sema/asm.c
index 359431c..44d83e9 100644
--- a/test/Sema/asm.c
+++ b/test/Sema/asm.c
@@ -21,7 +21,7 @@
   asm ("nop" : : : "0", "%0", "#0");
   asm ("nop" : : : "foo"); // expected-error {{unknown register name 'foo' in asm}}
   asm ("nop" : : : "52");
-  asm ("nop" : : : "54"); // expected-error {{unknown register name '54' in asm}}
+  asm ("nop" : : : "104"); // expected-error {{unknown register name '104' in asm}}
   asm ("nop" : : : "-1"); // expected-error {{unknown register name '-1' in asm}}
   asm ("nop" : : : "+1"); // expected-error {{unknown register name '+1' in asm}}
 }