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Re: ra-build.c

From: Ian Lance Taylor <iant at google dot com>
To: aparna at cse dot iitb dot ac dot in
Cc: gcc-help at gcc dot gnu dot org
Date: 28 Feb 2008 12:02:26 -0800
Subject: Re: ra-build.c
References: <2672.10.11.101.94.1204220676.squirrel@www.cse.iitb.ac.in>

aparna@cse.iitb.ac.in writes:

> pls can any one tell me, why this "for" loop is used
> 
> "for (insn = PREV_INSN (insn); insn && !INSN_P (insn);insn = PREV_INSN
> (insn));"
> 
> 
> IN
> function:  live_in()
> file Name: ra-build.c

It's walking the insn chain backward to find the next real insn.

ra-build.c was removed back in 2005, before the gcc 4.0 release, by
the way.

Ian

References:
- ra-build.c
  - From: aparna

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