[AArch64] Corrected FP16 Intrinsic range checks in Clang + added Sema tests

Summary:
This fixes the ranges for the vcvth family of FP16 intrinsics in the clang front end. Previously it was accepting incorrect ranges
-Changed builtin range checking in SemaChecking
-added tests SemaCheck changes - included in  their own file since no similar one exists
-modified existing tests to reflect new ranges

Reviewers: SjoerdMeijer, javed.absar

Reviewed By: SjoerdMeijer

Subscribers: kristof.beyls, cfe-commits

Differential Revision: https://reviews.llvm.org/D47592

llvm-svn: 334489
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 6648ffc..d5945ef 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -1499,10 +1499,10 @@
   switch (BuiltinID) {
   default:
     return false;
-#define GET_NEON_IMMEDIATE_CHECK
-#include "clang/Basic/arm_neon.inc"
-#include "clang/Basic/arm_fp16.inc"
-#undef GET_NEON_IMMEDIATE_CHECK
+  #define GET_NEON_IMMEDIATE_CHECK
+  #include "clang/Basic/arm_neon.inc"
+  #include "clang/Basic/arm_fp16.inc"
+  #undef GET_NEON_IMMEDIATE_CHECK
   }
 
   return SemaBuiltinConstantArgRange(TheCall, i, l, u + l);