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Date: Mon, 06 Jul 2015 20:59:00 -0000
From: Jeff Law <law@redhat.com>
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To: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>,        Richard Biener <rguenther@suse.de>,        gcc Patches <gcc-patches@gcc.gnu.org>
Subject: Re: move a * (1 << b) -> a << b pattern from fold-const.c to match.pd
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On 07/06/2015 02:28 PM, Prathamesh Kulkarni wrote:
> Hi,
> The attached patch moves pattern a * (1 << b) -> a << b.
> Bootstrapped on x86_64-unknown-linux-gnu, testing in progress.
> OK for trunk if testing passes ?
>
> Thank you,
> Prathamesh
>
>
> ChangeLog.txt
>
>
> 2015-07-06  Prathamesh Kulkarni<prathamesh.kulkarni@linaro.org>
>
> 	* fold-const.c (fold_binary_loc): Remove pattern a * 1 << b -> a << b.
> 	* match.pd (a * 1 << b -> a << b): New pattern.
>
> testsuite/
> 	* gcc.dg/tree-ssa/fold-shiftmult.c: New test-case.
OK assuming testing passes.

jeff