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Re: [tcb] Merge PHI nodes -- 7.4% reduction of PHI nodes (Take 2)

From: Kazu Hirata <kazu at cs dot umass dot edu>
To: law at redhat dot com
Cc: dnovillo at redhat dot com, gcc-patches at gcc dot gnu dot org, dberlin at dberlin dot org, rakdver at atrey dot karlin dot mff dot cuni dot cz
Date: Mon, 20 Sep 2004 19:15:45 -0400 (EDT)
Subject: Re: [tcb] Merge PHI nodes -- 7.4% reduction of PHI nodes (Take 2)
References: <1095713397.29252.78.camel@localhost.localdomain><1095719498.10950.172.camel@localhost.localdomain><20040920.191051.57463871.kazu@cs.umass.edu>

Hi Jeff,

> BB3:
>   x1 = PHI (0 (BB0), 1 (BB1))
>   x2 = (_Bool) x1;              <- Notice this cast!
> 
> BB4:
>   x2 = PHI (x1 (BB3), x0 (BB2))
>   if (x2)
>     goto BB5;
>   else
>     goto BB6;

I meant

BB3:
  x1 = PHI (0 (BB0), 1 (BB1))
  x2 = (_Bool) x1;              <- Notice this cast!

BB4:
  x3 = PHI (x2 (BB3), x0 (BB2))
  if (x3)
    goto BB5;
  else
    goto BB6;

Kazu Hirata

References:
- Re: [tcb] Merge PHI nodes -- 7.4% reduction of PHI nodes (Take 2)
  - From: Diego Novillo
- Re: [tcb] Merge PHI nodes -- 7.4% reduction of PHI nodes (Take 2)
  - From: Jeffrey A Law
- Re: [tcb] Merge PHI nodes -- 7.4% reduction of PHI nodes (Take 2)
  - From: Kazu Hirata

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