[ARM][CMSE] Add cmse intrinsics for TT instructions

[javed.absar]

Summary

This is 2nd patch in series following the RFC http://lists.llvm.org/pipermail/cfe-dev/2019-March/061834.html informing the community about providing CMSE support in clang/llvm.

This is patch L 1 (as mentioned in the RFC). Previous patch:
C1: [ARM][CMSE] Add commandline option and feature macro https://reviews.llvm.org/D59879

It defines the intrinsics cmse_TT, cmse_TTT, cmse_TTA, cmse_TTAT. There is no tests here as the tests are in subsequent clang patch that uses these intrinsics .

[dmgreen]

Do these need tests? Or does that come later once they do something?

llvm/trunk/include/llvm/IR/IntrinsicsARM.td

 def int_arm_crc32ch : Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty],
     [IntrNoMem]>;
 def int_arm_crc32w  : Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty],
     [IntrNoMem]>;
 def int_arm_crc32cw : Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty],
     [IntrNoMem]>;
 
 //===----------------------------------------------------------------------===//
+// CMSE
+
+def int_arm_cmse_tt : GCCBuiltin<"__builtin_arm_cmse_TT">,
+    Intrinsic<[llvm_i32_ty], [llvm_ptr_ty], [IntrNoMem]>;
+def int_arm_cmse_ttt : GCCBuiltin<"__builtin_arm_cmse_TTT">,
+    Intrinsic<[llvm_i32_ty], [llvm_ptr_ty], [IntrNoMem]>;
+def int_arm_cmse_tta : GCCBuiltin<"__builtin_arm_cmse_TTA">,
+    Intrinsic<[llvm_i32_ty], [llvm_ptr_ty], [IntrNoMem]>;
+def int_arm_cmse_ttat : GCCBuiltin<"__builtin_arm_cmse_TTAT">,
+    Intrinsic<[llvm_i32_ty], [llvm_ptr_ty], [IntrNoMem]>;
+
+//===----------------------------------------------------------------------===//
 // HINT
 
 def int_arm_hint : Intrinsic<[], [llvm_i32_ty]>;
 def int_arm_dbg : Intrinsic<[], [llvm_i32_ty]>;
 
 //===----------------------------------------------------------------------===//
 // UND (reserved undefined sequence)