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loong64: emit Go's XVMOVQ .V4 broadcast load instead of a WORD - #23
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Go's loong64 assembler does have the broadcast load: it is spelled as an arrangement, XVMOVQ off(R), X.V4, and assembles to xvldrepl.d (checked with Go 1.26.4 and 1.27.1: the same word as GNU as). v0.2.5's generator emitted it through go-asmgen's WORD encoder and its docs said Go lacked it; both are corrected. The machine code of sum_loong64.s is byte-identical before and after (compared from `go tool asm -S`), so the hardware results stand. Only the fused multiply-add (xvfmadd.d) remains a WORD. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Go's loong64 assembler does have the broadcast load: it is spelled as an
arrangement, XVMOVQ off(R), X.V4, and assembles to xvldrepl.d (checked with
Go 1.26.4 and 1.27.1: the same word as GNU as). v0.2.5's generator emitted
it through go-asmgen's WORD encoder and its docs said Go lacked it; both
are corrected. The machine code of sum_loong64.s is byte-identical before
and after (compared from
go tool asm -S), so the hardware results stand.Only the fused multiply-add (xvfmadd.d) remains a WORD.
🤖 Generated with Claude Code