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Re: peephole2: dead regs not marked as dead

From: Georg Lay <avr at gjlay dot de>
To: Paolo Bonzini <bonzini at gnu dot org>
Cc: GCC Development <gcc at gcc dot gnu dot org>
Date: Thu, 28 Oct 2010 15:10:46 +0200
Subject: Re: peephole2: dead regs not marked as dead
References: <4CC00268.1020803@gjlay.de> <mcrvd4v1inv.fsf@google.com> <4CC1729C.1030601@gjlay.de> <4CC93592.9060804@gnu.org> <4CC96A31.8030507@gjlay.de>

Georg Lay schrieb:

> This code is not nice.
> 
> ;; d8 = d4 * d6
> ;; d8 = d2
> ;; d2 = d8
> ;; return d2

this should be

;; d2 = d4 * d6
;; d8 = d2
;; d2 = d8
;; return d2

Georg

Follow-Ups:
- Re: peephole2: dead regs not marked as dead
  - From: Paolo Bonzini

References:
- peephole2: dead regs not marked as dead
  - From: Georg Lay
- Re: peephole2: dead regs not marked as dead
  - From: Ian Lance Taylor
- Re: peephole2: dead regs not marked as dead
  - From: Georg Lay
- Re: peephole2: dead regs not marked as dead
  - From: Paolo Bonzini
- Re: peephole2: dead regs not marked as dead
  - From: Georg Lay

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