[PATCH] D11783: Fix an alignment error in `llvm::expandAtomicRMWToCmpXchg`.

[JF Bastien]

jfb accepted this revision.
jfb added subscribers: morisset, reames.
jfb added a comment.
This revision is now accepted and ready to land.

lgtm

Adding @morisset and @reames as FYI.


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Comment at: lib/CodeGen/AtomicExpandPass.cpp:553
@@ -552,3 +552,3 @@
   // Atomics require at least natural alignment.
-  InitLoaded->setAlignment(AI->getType()->getPrimitiveSizeInBits());
+  InitLoaded->setAlignment(AI->getType()->getPrimitiveSizeInBits() / 8);
   Builder.CreateBr(LoopBB);
----------------
In a separate patch please also make this atomic! The comment above says that's what the generated code does... but it's not :-)


Repository:
  rL LLVM

http://reviews.llvm.org/D11783