Re: [RFC] Consider lrotate const rotation in vectorizer

[Richard Earnshaw (lists)]

On 18/07/2019 16:17, Jakub Jelinek wrote:
On Thu, Jul 18, 2019 at 04:12:48PM +0100, Richard Earnshaw (lists) wrote:
Both directions:
    aarch64 c6x ia64 m68k nios2 parisc sh x86 xtensa

AArch64 is Right only.

Maybe hw-wise, but it has both rotr<mode>3 and rotl<mode>3 expanders.
At least for GPRs.

        Jakub


Only for immediates.  And the patterns that support that just write out 
assembly as "ror (<size> - n)".

R.