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Re: stabilization issues ppc-linux
- To: law at cygnus dot com
- Subject: Re: stabilization issues ppc-linux
- From: Joern Rennecke <amylaar at cygnus dot co dot uk>
- Date: Tue, 12 Jan 1999 15:50:31 +0000 (GMT)
- Cc: rth at cygnus dot com, dje at watson dot ibm dot com, Franz dot Sirl-kernel at lauterbach dot com, egcs at cygnus dot com
> One might argue that it should treat CONSTANT_P_RTX like ADDRESSOF -- delay
> committal until after CSE has finished. Or even later. Unlike ADDRESSOF
> gcse could expose more constants via global constant propagation.
It should be OK to commit to the result one when this can be determined -
this can allow to remove some dependent code.
There should also be a cse and jump pass after we commit to values for
CONSTANT_P_RTX.
So maybe we should do this after gcse, just before the the folowing jump
optimizer - but the replacement of CONSTANT_P_RTX itself must not depend on
flag_gcse, of course.