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Re: [PATCH] PR30391: GIMPLE_MODIFY_STMT vs. middle-end

From: kenner at vlsi1 dot ultra dot nyu dot edu (Richard Kenner)
To: roger at eyesopen dot com
Cc: aldyh at redhat dot com, dnovillo at redhat dot com, gcc-patches at gcc dot gnu dot org
Date: Mon, 12 Feb 2007 18:34:05 EST
Subject: Re: [PATCH] PR30391: GIMPLE_MODIFY_STMT vs. middle-end
References: <9748.68.35.10.103.1170648498.squirrel@mail.eyesopen.com> <20070212200629.GA16502@redhat.com> <1619.208.41.78.162.1171312701.squirrel@mail.eyesopen.com>

> This is very similar to the way that instructions are handled in the RTL
> optimizers, all of the simplification code takes patterns (RTX), but not
> insns which are doubly linked data structures for organizing them.  This
> conceptual distinction between an insn's pattern [the expression it
> evaluates] and the insn itself, may be useful to retain in the tree-ssa
> optimizers.

I agree.

References:
- [PATCH] PR30391: GIMPLE_MODIFY_STMT vs. middle-end
  - From: Roger Sayle
- Re: [PATCH] PR30391: GIMPLE_MODIFY_STMT vs. middle-end
  - From: Aldy Hernandez
- Re: [PATCH] PR30391: GIMPLE_MODIFY_STMT vs. middle-end
  - From: Roger Sayle

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