Integrated: 8355980: RISC-V: remove vmclr_m before vmsXX and vmfXX

[Hamlin Li]

On Wed, 30 Apr 2025 14:46:23 GMT, Hamlin Li <mli at openjdk.org> wrote:

> Hi,
> Can you help to review this simple improvement?
> 
> By rvv spec,
> "integer compare instructions write 1 to the destination mask register element if the comparison evaluates to true, and 0 otherwise."
> "These vector FP compare instructions compare two source operands and write the comparison result to a mask register. "
> 
> So, it's not always necessary to clear the mask register before vector comparison operation, e.g. when `vm != Assembler::v0_t`.
> 
> Thanks!

This pull request has now been integrated.

Changeset: 811f117c
Author:    Hamlin Li <mli at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/811f117ce396ac7aafd71f5618f2de96bb96f311
Stats:     6 lines in 1 file changed: 4 ins; 0 del; 2 mod

8355980: RISC-V: remove vmclr_m before vmsXX and vmfXX

Reviewed-by: dzhang, fyang

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PR: https://git.openjdk.org/jdk/pull/24968