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[PATCH, i386]: Fix PR 53712, Does not combine unaligned load with _mm_cmpistri

From: Uros Bizjak <ubizjak at gmail dot com>
To: gcc-patches at gcc dot gnu dot org
Date: Mon, 18 Jun 2012 20:29:03 +0200
Subject: [PATCH, i386]: Fix PR 53712, Does not combine unaligned load with _mm_cmpistri

Hello!

Attached patch teaches gcc how to merge unaligned load (UNSPEC_MOVU)
with pcmpistr/pcmpestr instructions.

2012-06-18  Uros Bizjak  <ubizjak@gmail.com>

	PR target/53712
	* config/i386/sse.md (*sse4_2_pcmpestr_unaligned): New.
	(*sse4_2_pcmpistr_unaligned): New.

testsuite/ChangeLog:

2012-06-18  Uros Bizjak  <ubizjak@gmail.com>

	PR target/53712
	* gcc.target/i386/pr53712.c: New test.

Bootstrapped and regression tested on x86_64-pc-linux-gnu {,-m32},
also with followup lex.c patch that substitutes asm with builtins.

Committed to mainline SVN.

Uros.

Attachment: p.diff.txt
Description: Text document

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