[go/dev.simd] [dev.simd] cmd/compile: track which CPU features are in scope

[David Chase (Gerrit)]

David Chase submitted the change

Change information

Commit message:

[dev.simd] cmd/compile: track which CPU features are in scope

analysis for

- is this block only reached through feature checks?
- does the function signature imply AVX-something?
- is there an instruction in this block which implies AVX-something?

and keep track of which features those are.  Features =
AVX, AVX2, AVX512, etc.

Has a test.

Change-Id: I0b6f2e87d01ec587818db11cf71fac1e4d500650

Reviewed-on: https://go-review.googlesource.com/c/go/+/706337

LUCI-TryBot-Result: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Reviewed-by: Junyang Shao <shaoj...@google.com>

Files:

• M src/cmd/compile/internal/ssa/block.go
• M src/cmd/compile/internal/ssa/compile.go
• A src/cmd/compile/internal/ssa/cpufeatures.go
• M src/cmd/compile/internal/ssa/sizeof_test.go
• M src/cmd/compile/internal/types/type.go
• A test/simd.go

Change size: L

Delta: 6 files changed, 417 insertions(+), 1 deletion(-)

Branch: refs/heads/dev.simd

Submit Requirements:

• Code-Review: +2 by Junyang Shao
• TryBots-Pass: LUCI-TryBot-Result+1 by Go LUCI

Open in Gerrit

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Gerrit

Gerrit-MessageType: merged

Gerrit-Project: go

Gerrit-Branch: dev.simd

Gerrit-Change-Id: I0b6f2e87d01ec587818db11cf71fac1e4d500650

Gerrit-Change-Number: 706337

Gerrit-PatchSet: 10

Gerrit-Owner: David Chase <drc...@google.com>

Gerrit-Reviewer: Cherry Mui <cher...@google.com>

Gerrit-Reviewer: David Chase <drc...@google.com>

Gerrit-Reviewer: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Gerrit-Reviewer: Junyang Shao <shaoj...@google.com>