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[patch] Fix powerpc 64 alignment problem for lwa instruction

From: Hui-May Chang <hm dot chang at apple dot com>
To: gcc-patches at gcc dot gnu dot org
Date: Tue, 7 Nov 2006 12:42:35 -0800
Subject: [patch] Fix powerpc 64 alignment problem for lwa instruction

We, at Apple, found a ppc64 code generation problem where lwa_operand routine didn't check the alignment of a memory operand being 32 bits aligned or not.

The following patch has been tested on ppc MacOS with "make all", "-- enable-languages=c,c++,objc,obj-c++", and regression tested with a top- level "make check-gcc" with no regression.

gcc/ChangeLog:

	* gcc/config/rs6000/predicates.md (lwa_operand): Check the alignment of
	a memory operand is 32 bits aligned or not.

gcc/testsuite/ChangeLog:

* gcc.dg/pragma-align-3.c : New.

Attachment: radar-patch.align.txt
Description: Text document

OK for mainline?

Hui-May Chang
Apple Computer

Follow-Ups:
- Re: [patch] Fix powerpc 64 alignment problem for lwa instruction
  - From: Andrew Pinski

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