[llvm-commits] PATCH: Provide branch weight metadata for instrumentation branches in AddressSanitizer=

[Chandler Carruth]

The patch helps....


On Mon, Jul 16, 2012 at 2:10 AM, Chandler Carruth <chandlerc at gmail.com>wrote:

> I have no idea if this heuristic is correct, but I suspect it's pretty
> good...
>
> It doesn't really matter what heuristic is used if we insert 'unreachable'
> -- that should trump all else, but it seemed simpler to just always set a
> flat heavy bias toward the "nothing wrong" direction. Looking at the asm
> output, the metadata has the desired effect.
>
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