On Sun, 2004-08-29 at 13:41, Mark Mitchell wrote:
This PR is a case where GCSE creates an invalid REG_EQUAL note. (More
details are in the audit trail.) I asked Jeff Law for his thoughts on
this patch about ten days ago, but haven't heard back, so I'm going
ahead and checking this in.
Tested on i686-pc-linux-gnu, applied on the 3.4 branch and on the
mainline.
Sorry, I didn't expect the cross-town move to leave me without an
internet connection for so long.
I haven't followed all the changes to gcse which arrange for it
to create REG_EQUAL notes. However, I do know most of those changes
were done in an attempt to improve later optimizations, so it's
possible your change is pessimizing code in some ways.
But more importantly, I don't see how that REG_EQUAL note is
incorrect.