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Re: Question about pre_edge_insert () in gcse.c

From: Daniel Berlin <dberlin at dberlin dot org>
To: Leehod Baruch <LEEHOD at il dot ibm dot com>
Cc: GCC Development <gcc at gcc dot gnu dot org>
Date: Sun, 28 Aug 2005 11:11:01 -0400
Subject: Re: Question about pre_edge_insert () in gcse.c
References: <OF22A788F3.3022B000-ONC225706B.004A6ED6-C225706B.00523856@il.ibm.com>

> If what I'm saying here is correct, some redundant expression might
> be inserted.

We have testcases (search bugzilla for GCSE) with redundant expressions
being inserted by GCSE (repeatedly, such that if you run GCSE 5 times,
it inserts the same expression 5 times in the same place).  If you are
correct, some of these should be fixed by changing that.

--Dan

References:
- Question about pre_edge_insert () in gcse.c
  - From: Leehod Baruch

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