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[PATCH] Peephole to generate fisttp

From: Evan Cheng <evan dot cheng at apple dot com>
To: gcc-patches at gcc dot gnu dot org
Date: Wed, 19 Oct 2005 12:08:36 -0700
Subject: [PATCH] Peephole to generate fisttp

Hi,

This is for gcc for i386 with SSE3 enabled. For double to signed integer conversion, cvtsd2si is generally faster. However, if the source operand is already in ST(0), then gcc should emit fisttp instead. The patch handles this corner case.

Ok for 4.2?

Thanks,

Evan

2005-10-19 Evan Cheng <evan.cheng@apple.com>

    * config/i386/i386.md (fix_trunc<mode>_i387_fisttp_1 peephole2):
    New.

Attachment: patch.fsf.4209085.txt
Description: Text document

Follow-Ups:
- Re: [PATCH] Peephole to generate fisttp
  - From: Richard Henderson

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