[PATCH] [Support] Add BitHacks.h - generic bit utility functions.

[Rafael Ávila de Espíndola]

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Comment at: include/llvm/Support/BitHacks.h:172
@@ +171,3 @@
+
+  // Use ^ instead of - because both gcc and llvm can remove the associated ^
+  // in the __builtin_clz intrinsic on x86.
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llvm cannot remove a '-'? Would you mind reporting a bug? It is probably just us not noticing that we have a power of two.


http://llvm-reviews.chandlerc.com/D841