Re: move a * (1 << b) -> a << b pattern from fold-const.c to match.pd

[Jeff Law]

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.kulka...@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