[PATCH] combine: distribute_notes again (PR69567, PR64682)

[Segher Boessenkool]

On Tue, Feb 02, 2016 at 11:32:08AM +0000, Segher Boessenkool wrote:
> As it happens the patch I did over a year ago for PR64682 isn't quite
> correct.  This is PR69567.  This fixes it.
> 
> Tested on the separate testcases; also did bootstrap + testsuite on
> powerpc64-linux and x86_64-linux.  I'll commit this tomorrow or so if
> no one sees something wrong with it.
> 
> 
> 2016-02-02  Segher Boessenkool  <segher@kernel.crashing.org>
> 
> 	PR rtl-optimization/64682
> 	PR rtl-optimization/69567
> 	* combine.c (distribute_notes) <REG_DEAD>: Place the death note
> 	before I2 only if the register is both used and set in I2.

Committed to mainline and 5 now.


Segher