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Re: [PATCH] Scalar evolution and hidden casts

From: Eric Botcazou <ebotcazou at adacore dot com>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Tue, 19 May 2009 12:44:31 +0200
Subject: Re: [PATCH] Scalar evolution and hidden casts
References: <200905191118.37813.ebotcazou@adacore.com> <84fc9c000905190247k352c3c74m59028d0d9191dba2@mail.gmail.com>

> Beware!  COMPLEX_EXPR is tcc_binary and your changes will
> cause the wrong type to be used!

You're right, but follow_ssa_edge_binary only handles POINTER_PLUS_EXPR, 
PLUS_EXPR and MINUS_EXPR so this doesn't really matter.  I guess I should 
specifically test for the 3 codes, like in follow_ssa_edge_expr.

> I suppose you specifically hit the POINTER_PLUS_EXPR case?
> Maybe just special-case that like in gimple_expr_type and use
> that in follow_ssa_edge_in_rhs.

No, it's the PLUS_EXPR case.

-- 
Eric Botcazou

Follow-Ups:
- Re: [PATCH] Scalar evolution and hidden casts
  - From: Richard Guenther

References:
- [PATCH] Scalar evolution and hidden casts
  - From: Eric Botcazou
- Re: [PATCH] Scalar evolution and hidden casts
  - From: Richard Guenther

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