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Re: [PATCH] add insn implementing signbit to middle end and s390

From: "Richard Guenther" <richard dot guenther at gmail dot com>
To: "Wolfgang Gellerich" <gellerich at de dot ibm dot com>
Cc: rth at redhat dot com, gcc-patches at gcc dot gnu dot org
Date: Fri, 6 Jul 2007 17:58:40 +0200
Subject: Re: [PATCH] add insn implementing signbit to middle end and s390
References: <OF0DD6B328.2549D5F8-ONC12572B1.002B8E31-422572B1.002B8BF6@de.ibm.com> <4635FEAF.mailDOR1PBXYL@de.ibm.com> <84fc9c000706110210u738afdcap73dd9ed0d155b747@mail.gmail.com> <468E596A.mailEUV1SQ7M9@de.ibm.com>

On 7/6/07, Wolfgang Gellerich <gellerich@de.ibm.com> wrote:


OK. Here is the versin with added call to builtin_save_expr for the
argument. It bootstraps on Intel and on s390, and does not introduce new
unexpected failures in the regression tests.

This is ok.

Thanks,
Richard.

Changelog:

2007-06-07 Wolfgang Gellerich <gellerich@de.ibm.com>

        * optabs.h: Added declaration for signbit_optab.
        * optabs.c: (init_optabs): Added initialization for signbit_optab.
        * genoptinit.c (optabs): Added entry for signbit insns.
        * builtins.c (expand_builtin_signbit): Added code to use a signbit insn,
        if available.
        * config/s390/s390.h (S390_TDC_SIGNBIT_SET): New constant.
        * config/s390/s390.md (signbit<mode>2): New expander.

References:
- Re: [PATCH] add insn implementing signbit to middle end and s390
  - From: Wolfgang Gellerich

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