RFR(S): 8154537: AArch64: some integer rotate instructions are never emitted

Andrew Haley aph at redhat.com
Tue Apr 19 12:52:50 UTC 2016

On 04/19/2016 12:44 PM, Roland Westrelin wrote:
> (src >>> shift) | (src << (32 - shift)) and (src >>> shift) | (src <<
> -shift) with src an int have some support in the aarch64.ad ad file:
> rorI_rReg_Var_C_32 and rorI_rReg_Var_C0 but their definitions is broken
> and never match any ideal graph subtree.
> http://cr.openjdk.java.net/~roland/8154537/webrev.00/

OK, thanks.  We'll need backports for
http://hg.openjdk.java.net/aarch64-port/jdk8u/ and

These should just apply cleanly.


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