r366820 - [clang, test] Fix Clang :: Headers/max_align.c on 64-bit SPARC

[Rainer Orth via cfe-commits]

Author: ro
Date: Tue Jul 23 09:24:00 2019
New Revision: 366820

URL: http://llvm.org/viewvc/llvm-project?rev=366820&view=rev
Log:
[clang, test] Fix Clang :: Headers/max_align.c on 64-bit SPARC

Clang :: Headers/max_align.c currently FAILs on 64-bit SPARC:

  error: 'error' diagnostics seen but not expected: 
    File /vol/llvm/src/clang/dist/test/Headers/max_align.c Line 12: static_assert failed due to requirement '8 == _Alignof(max_align_t)' ""
  1 error generated.

This happens because SuitableAlign isn't defined for SPARCv9 unlike SPARCv8
(which uses the default of 64 bits).  gcc's sparc/sparc.h has

  #define BIGGEST_ALIGNMENT (TARGET_ARCH64 ? 128 : 64)

This patch sets SuitableAlign to match and updates the corresponding testcase.

Tested on sparcv9-sun-solaris2.11.

Differential Revision: https://reviews.llvm.org/D64487

Modified:
    cfe/trunk/lib/Basic/Targets/Sparc.h
    cfe/trunk/test/Preprocessor/init.c

Modified: cfe/trunk/lib/Basic/Targets/Sparc.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets/Sparc.h?rev=366820&r1=366819&r2=366820&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Targets/Sparc.h (original)
+++ cfe/trunk/lib/Basic/Targets/Sparc.h Tue Jul 23 09:24:00 2019
@@ -208,6 +208,7 @@ public:
     // aligned. The SPARCv9 SCD 2.4.1 says 16-byte aligned.
     LongDoubleWidth = 128;
     LongDoubleAlign = 128;
+    SuitableAlign = 128;
     LongDoubleFormat = &llvm::APFloat::IEEEquad();
     MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
   }

Modified: cfe/trunk/test/Preprocessor/init.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Preprocessor/init.c?rev=366820&r1=366819&r2=366820&view=diff
==============================================================================
--- cfe/trunk/test/Preprocessor/init.c (original)
+++ cfe/trunk/test/Preprocessor/init.c Tue Jul 23 09:24:00 2019
@@ -9599,6 +9599,7 @@
 // X86-64-DECLSPEC: #define __declspec{{.*}}
 //
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=sparc64-none-none < /dev/null | FileCheck -match-full-lines -check-prefix SPARCV9 %s
+// SPARCV9:#define __BIGGEST_ALIGNMENT__ 16
 // SPARCV9:#define __INT64_TYPE__ long int
 // SPARCV9:#define __INTMAX_C_SUFFIX__ L
 // SPARCV9:#define __INTMAX_TYPE__ long int