[SystemZ] Add support for new cpu architecture - arch15

This patch adds support for the next-generation arch15
CPU architecture to the SystemZ backend.

This includes:
- Basic support for the new processor and its features.
- Detection of arch15 as host processor.
- Assembler/disassembler support for new instructions.
- Exploitation of new instructions for code generation.
- New vector (signed|unsigned|bool) __int128 data types.
- New LLVM intrinsics for certain new instructions.
- Support for low-level builtins mapped to new LLVM intrinsics.
- New high-level intrinsics in vecintrin.h.
- Indicate support by defining  __VEC__ == 10305.

Note: No currently available Z system supports the arch15
architecture.  Once new systems become available, the
official system name will be added as supported -march name.

1 files changed, 6 insertions, 4 deletions

diff --git a/clang/lib/Sema/DeclSpec.cpp b/clang/lib/Sema/DeclSpec.cpp
index 4764468..95e14ca 100644
--- a/clang/lib/Sema/DeclSpec.cpp
+++ b/clang/lib/Sema/DeclSpec.cpp
@@ -1201,9 +1201,10 @@ void DeclSpec::Finish(Sema &S, const PrintingPolicy &Policy) {
         !S.getLangOpts().ZVector)
       S.Diag(TSWRange.getBegin(), diag::err_invalid_vector_long_long_decl_spec);
 
-    // No vector __int128 prior to Power8.
+    // No vector __int128 prior to Power8 (or ZVector).
     if ((TypeSpecType == TST_int128) &&
-        !S.Context.getTargetInfo().hasFeature("power8-vector"))
+        !S.Context.getTargetInfo().hasFeature("power8-vector") &&
+        !S.getLangOpts().ZVector)
       S.Diag(TSTLoc, diag::err_invalid_vector_int128_decl_spec);
 
     // Complex vector types are not supported.
@@ -1225,9 +1226,10 @@ void DeclSpec::Finish(Sema &S, const PrintingPolicy &Policy) {
           << (TypeAltiVecPixel ? "__pixel" :
                                  getSpecifierName((TST)TypeSpecType, Policy));
       }
-      // vector bool __int128 requires Power10.
+      // vector bool __int128 requires Power10 (or ZVector).
       if ((TypeSpecType == TST_int128) &&
-          (!S.Context.getTargetInfo().hasFeature("power10-vector")))
+          (!S.Context.getTargetInfo().hasFeature("power10-vector") &&
+           !S.getLangOpts().ZVector))
         S.Diag(TSTLoc, diag::err_invalid_vector_bool_int128_decl_spec);
 
       // Only 'short' and 'long long' are valid with vector bool. (PIM 2.1)