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Re: [PATCH] combine: Special handling for conditional refs when creating log links
- From: Alexander Monakov <amonakov at ispras dot ru>
- To: Andreas Krebbel <krebbel at linux dot vnet dot ibm dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Fri, 7 May 2010 16:03:05 +0400 (MSD)
- Subject: Re: [PATCH] combine: Special handling for conditional refs when creating log links
- References: <20100507112822.GA12563@bart>
On Fri, 7 May 2010, Andreas Krebbel wrote:
> I've tested the patch on x86_64 and s390x. But a real test would
> require a cond_exec target like ia64.
No, on ia64 and arm COND_EXECs don't appear until rather late in the RTL
pipeline. I don't recall where exactly they are generated, but e.g.
if-conversion produces COND_EXECs only after reload.
Is presence of COND_EXECs really supported by the pre-reload RTL passes?
Alexander