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Re: [PATCH][PPC] Remove unnecessary local variable mptwo

From: Roland McGrath <roland at hack dot frob dot com>
To: "Ryan S. Arnold" <ryan dot arnold at gmail dot com>
Cc: libc-alpha <libc-alpha at sourceware dot org>
Date: Thu, 10 Jan 2013 10:23:46 -0800 (PST)
Subject: Re: [PATCH][PPC] Remove unnecessary local variable mptwo
References: <20130109114033.GC2692@spoyarek.pnq.redhat.com><50EEE333.7080304@systemhalted.org><50EEF6E9.9020601@twiddle.net><20130110180350.GJ2692@spoyarek.pnq.redhat.com><20130110180639.0E9252C0A8@topped-with-meat.com><CAAKybw9geO_oTzX+FZqyvOos-R1VfZG=cfemCQvvJ6K7xOZCig@mail.gmail.com>

> By which, you mean, if the element access is predictable enough the
> compiler will simply populate a register with the referenced value and
> use it instead of checking any actual data structure constructed on
> the stack, and will in-fact decline to generated that data structure
> at all?

Exactly.  (I have no idea if anything like that is feasible in this
particular case.)

Follow-Ups:
- Re: [PATCH][PPC] Remove unnecessary local variable mptwo
  - From: Steven Munroe

References:
- [PATCH][PPC] Remove unnecessary local variable mptwo
  - From: Siddhesh Poyarekar
- Re: [PATCH][PPC] Remove unnecessary local variable mptwo
  - From: Carlos O'Donell
- Re: [PATCH][PPC] Remove unnecessary local variable mptwo
  - From: Richard Henderson
- Re: [PATCH][PPC] Remove unnecessary local variable mptwo
  - From: Siddhesh Poyarekar
- Re: [PATCH][PPC] Remove unnecessary local variable mptwo
  - From: Roland McGrath
- Re: [PATCH][PPC] Remove unnecessary local variable mptwo
  - From: Ryan S. Arnold

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