On Wed, 7 Apr 2021 09:53:36 GMT, Andrew Haley <a...@openjdk.org> wrote:
>> src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp line 5829: >> >>> 5827: __ strb(r14, __ post(dst, 1)); >>> 5828: __ strb(r15, __ post(dst, 1)); >>> 5829: __ strb(r13, __ post(dst, 1)); >> >> I think this sequence should be 4 BFMs, STRW, BFM, STRW. That's the best we >> can do, I think. > > Sorry, that's not quite right, but you get the idea: let's not generate > unnecessary memory traffic. Okay, implemented as: __ lslw(r14, r10, 10); __ bfiw(r14, r11, 4, 6); __ bfmw(r14, r12, 2, 5); __ rev16w(r14, r14); __ bfiw(r13, r12, 6, 2); __ strh(r14, __ post(dst, 2)); __ strb(r13, __ post(dst, 1)); ------------- PR: https://git.openjdk.java.net/jdk/pull/3228
