On Tue, 16 Jan 2024 06:13:43 GMT, Jatin Bhateja <jbhat...@openjdk.org> wrote:
>> src/hotspot/cpu/x86/c2_MacroAssembler_x86.cpp line 5309: >> >>> 5307: assert(bt == T_LONG || bt == T_DOUBLE, ""); >>> 5308: vmovmskpd(rtmp, mask, vec_enc); >>> 5309: shlq(rtmp, 5); // for 64 bit rows (4 longs) >> >> Suggestion: >> >> shlq(rtmp, 5); // for 32 bit rows (4 longs) > > Each long/double permute lane holds 64 bit value. @jatin-bhateja so why do you shift by 5? I thought 4 longs are 32 bit? ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/17261#discussion_r1453003935
