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[Committed/AARCH64] Fix *extr_insv_lower_reg<mode> pattern

From: Andrew Pinski <andrew dot pinski at caviumnetworks dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Sat, 26 Jul 2014 19:12:36 -0700
Subject: [Committed/AARCH64] Fix *extr_insv_lower_reg<mode> pattern
Authentication-results: sourceware.org; auth=none

The problem here is that the pattern marks the second operand as a
rewrite constraint but this operand is never written to.  It looks
like it was a copy and pasto.

Committed as obvious and should improve register allocation in some cases.

Thanks,
Andrew Pinski

ChangeLog:
* config/aarch64/aarch64.md (*extr_insv_lower_reg<mode>): Remove + from
the read only register.

Attachment: fixconstraint.diff.txt
Description: Text document

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