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cmd/asm: missing instruction PSRAD / PSRAW on AMD64 #18972

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samuel opened this issue Feb 7, 2017 · 2 comments
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cmd/asm: missing instruction PSRAD / PSRAW on AMD64 #18972

samuel opened this issue Feb 7, 2017 · 2 comments
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FrozenDueToAge NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided.
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Go1.9Maybe

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@samuel
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samuel commented Feb 7, 2017

What version of Go are you using (go version)?

go version go1.8rc3 darwin/amd64

What operating system and processor architecture are you using (go env)?

GOARCH=amd64

What did you do?

Unless I'm missing it due to being named something different, the PSRAD/W instruction is not implemented by the amd64 assembler. It's very useful when needing to sign-extend 16-bit integers to 32-bit integers and SSE4.1 isn't available (PMOVSXWD = PUNPCKLWL + PSRAD)
@ALTree
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ALTree commented Feb 7, 2017

In the list I see a PSRAL and a PSRAW.

Does PSRAW not work?
Is PSRAL PSRAD's name? Have you tried it?

@ALTree ALTree added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Feb 7, 2017
@ALTree ALTree added this to the Go1.9Maybe milestone Feb 7, 2017
@ALTree ALTree added the WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided. label Feb 7, 2017
@samuel
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samuel commented Feb 7, 2017

Oh, sorry! Totally didn't see those but should have realized with the naming convention (Long=Word). Thanks

@samuel samuel closed this as completed Feb 7, 2017
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FrozenDueToAge NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. WaitingForInfo Issue is not actionable because of missing required information, which needs to be provided.
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