[PATCH] D26286: [Sparc]: correct the ATOMIC_LLONG_LOCK_FREE macro

[Douglas Katzman via cfe-commits]

dougk created this revision.
dougk added a reviewer: jyknight.
dougk added a subscriber: cfe-commits.

https://reviews.llvm.org/D26286

Files:
  lib/Basic/Targets.cpp
  test/Preprocessor/init.c


Index: test/Preprocessor/init.c
===================================================================
--- test/Preprocessor/init.c
+++ test/Preprocessor/init.c
@@ -6913,6 +6913,7 @@
 // SPARC:#define __FLT_MIN_EXP__ (-125)
 // SPARC:#define __FLT_MIN__ 1.17549435e-38F
 // SPARC:#define __FLT_RADIX__ 2
+// SPARC:#define __GCC_ATOMIC_LLONG_LOCK_FREE 1
 // SPARC:#define __INT16_C_SUFFIX__
 // SPARC:#define __INT16_FMTd__ "hd"
 // SPARC:#define __INT16_FMTi__ "hi"
Index: lib/Basic/Targets.cpp
===================================================================
--- lib/Basic/Targets.cpp
+++ lib/Basic/Targets.cpp
@@ -6797,7 +6797,10 @@
       PtrDiffType = SignedLong;
       break;
     }
-    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
+    // Up to 32 bits are lock-free atomic, but we're willing to do atomic ops
+    // on up to 64 bits.
+    MaxAtomicPromoteWidth = 64;
+    MaxAtomicInlineWidth = 32;
   }
 
   void getTargetDefines(const LangOptions &Opts,


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