[PATCH] Fix Darwin bootstrap (middle-end/37293)

["Andrew Pinski" <Andrew_Pinski at playstation dot sony dot com>]

Hi,
  With turning on IPA-CP, we were hitting the case where a function is
cloned the function was still being marked as weak.  After fixing that
so it is no longer being marked as weak, the function calls need to be
updated as we changed the call from being weak to non weak so the tree
optimizers can now see that the function is non throwing.

This fixes the two issues that were found by the darwin bootstrap failure.
OK? Bootstrapped and tested on i386-darwin with no regressions that
are related to the patch, some of them are related to the IRA merge
and others are related to optimize for size changes.

Thanks,
Andrew Pinski

ChangeLog:
* cgraphunit.c (update_call_expr): Remove eh regions from statements
which become non throw.
(cgraph_function_versioning): Also clear DECL_WEAK.  Call
update_call_expr after updating the flags on the decl.

Attachment: fixipacp.diff.txt
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