[PATCH] D118021: [Driver] Use libatomic for 32-bit SPARC atomics support

[Joerg Sonnenberger via Phabricator via cfe-commits]

joerg added inline comments.


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Comment at: clang/lib/Driver/ToolChains/Solaris.cpp:135
     }
+    // LLVM lacks atomics support on 32-bit SPARC, so forcibly link with
+    // libatomic as a workaround.
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This comment is misleading. It's not so much that LLVM doesn't support them, but that SPARCv8 doesn't have the necessary hardware support. The v8+ support is incomplete, which is a related problem though.


Repository:
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  https://reviews.llvm.org/D118021/new/

https://reviews.llvm.org/D118021