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Re: [patch, fortran] Optimize assignment of empty strings

From: Tobias Burnus <burnus at net-b dot de>
To: Thomas Koenig <tkoenig at netcologne dot de>
Cc: "fortran at gcc dot gnu dot org" <fortran at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Thu, 07 Jun 2012 10:53:20 +0200
Subject: Re: [patch, fortran] Optimize assignment of empty strings
References: <4FCFCBF7.2050805@netcologne.de>

Thomas Koenig wrote:

his rather simple patch makes sure that only memset is used for
assigning empty strings when front-end optimization is used.

Regression-tested. OK for trunk?

OK, thanks for the quick patch.

Tobias

2012-06-06 Thomas König <tkoenig@gcc.gnu.org>

        PR fortran/52861
        * frontend-passes (empty_string):  Add prototype.
        (optimize_assignment):  Set the length of an empty string
        constant to zero.

2012-06-06 Thomas König <tkoenig@gcc.gnu.org>

        PR fortran/52861
        * gfortran.dg/string_assign_1.f90:  New test case.

References:
- [patch, fortran] Optimize assignment of empty strings
  - From: Thomas Koenig

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