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[PATCH, i386]: Backport recent AVX fixes to 4.6 and 4.5 branch

From: Uros Bizjak <ubizjak at gmail dot com>
To: gcc-patches at gcc dot gnu dot org
Date: Wed, 4 May 2011 18:48:08 +0200
Subject: [PATCH, i386]: Backport recent AVX fixes to 4.6 and 4.5 branch

Hello!

2011-05-04  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/i386.md (*movdi_internal_rex64) <TYPE_SSEMOV>:
	Use %v prefix in insn mnemonic to handle TARGET_AVX.
	(*movdi_internal): Use "maybe_vex" instead of "vex" in "prefix"
	attribute calculation.
	(*movdf_internal): Output AVX mnemonics.  Add "prefix" attribute.
	* config/i386/sse.md (*sse2_storeq_rex64): Do not emit %v prefix
	for mov{q} mnemonic.
	(*vec_extractv2di_1_rex64_avx): Ditto.

Tested on x86_64-pc-linux-gnu {,-m32}, committed to 4.6 and 4.5 branches.

Uros.

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