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

[John Paul Adrian Glaubitz via Phabricator via cfe-commits]

glaubitz added inline comments.


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Comment at: clang/lib/Driver/ToolChains/Solaris.cpp:138-139
+    if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) {
+      CmdArgs.push_back(getAsNeededOption(getToolChain(), true));
+      CmdArgs.push_back("-latomic");
+      CmdArgs.push_back(getAsNeededOption(getToolChain(), false));
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Note, this will only work when `__atomic_compare_exchange()` is being used as ``__sync_val_compare_and_swap_8` is not implemented by `libatomic` in gcc, see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63368 (Unless this has changed recently).


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D118021/new/

https://reviews.llvm.org/D118021