[PATCH] D64487: [clang, test] Fix Clang :: Headers/max_align.c on 64-bit SPARC

[Rainer Orth via Phabricator via cfe-commits]

ro created this revision.
ro added reviewers: venkatra, fedor.sergeev.
Herald added subscribers: jrtc27, jyknight.
Herald added a project: clang.

`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` .  Ok for trunk?


Repository:
  rC Clang

https://reviews.llvm.org/D64487

Files:
  lib/Basic/Targets/Sparc.h
  test/Preprocessor/init.c


Index: test/Preprocessor/init.c
===================================================================
--- test/Preprocessor/init.c
+++ test/Preprocessor/init.c
@@ -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
Index: lib/Basic/Targets/Sparc.h
===================================================================
--- lib/Basic/Targets/Sparc.h
+++ lib/Basic/Targets/Sparc.h
@@ -208,6 +208,7 @@
     // aligned. The SPARCv9 SCD 2.4.1 says 16-byte aligned.
     LongDoubleWidth = 128;
     LongDoubleAlign = 128;
+    SuitableAlign = 128;
     LongDoubleFormat = &llvm::APFloat::IEEEquad();
     MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
   }


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