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[PATCH, i386]: Introduce Yp register constraint and merge *_lea add ans ashift patterns with base

From: Uros Bizjak <ubizjak at gmail dot com>
To: gcc-patches at gcc dot gnu dot org
Date: Tue, 23 Aug 2011 21:59:42 +0200
Subject: [PATCH, i386]: Introduce Yp register constraint and merge *_lea add ans ashift patterns with base

Hello!

Attached patch introduces Yp register constraint, conditionalized on
TARGET_PARTIAL_REG_STALL.  Using this constraint, several *_lea
patterns can be merged with their base patterns, resulting in many
removed lines of code.

No functional changes otherwise.

2011-08-23  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/constraints.md (Yp): New register constraint.
	* config/i386/i386.md (*addhi_1): Merge with *addhi_1_lea using
	Yp register constraint.
	(*addqi_1): Merge with *addqi_1_lea using Yp register constraint.
	(*ashlhi3_1): Merge with *ashlhi3_1_lea using Yp register constraint.
	(*ashlqi3_1): Merge with *ashlqi3_1_lea using Yp register constraint.

Patch was bootstrapped and regression tested on x86_64-pc-linux-gnu
{,-m32}, committed to mainline SVN.

URos.

Attachment: p.diff.txt
Description: Text document

Follow-Ups:
- Re: [PATCH, i386]: Introduce Yp register constraint and merge *_lea add ans ashift patterns with base
  - From: Richard Henderson

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