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d7b3da6e25
replace difficult-to-use AVX512-only rotateAll with an emulation from shifts. We can revisit this in the future or else just peephole the shifts into rotates, later. this adds plain emulation on arm64 and also for 16-bit rotation on amd64 includes tests, needs additional tests to exercise all the weird paths through the emulation because it recognizes constants etc. the inlining threshold for simd-mentioning closures was bumped up even higher because the rotate emulation has a higher inlining cost, and the test that this mattered for was taken from actual crypto code. Change-Id: I26c92db2551d2f44a8cd03ac21571491fea436d6 Reviewed-on: https://go-review.googlesource.com/c/go/+/781262 Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
51 lines
4 KiB
Go
51 lines
4 KiB
Go
// errorcheck -0 -m
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//go:build goexperiment.simd && amd64
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// Copyright 2025 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package foo
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import "simd/archsimd"
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func hasClosure(a, b, c, d archsimd.Int64x4) (w, x, y, z archsimd.Int64x4) {
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shuf := func() { // ERROR "can inline hasClosure.func1"
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w = z.RotateAllLeft(1).Xor(a) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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x = w.RotateAllLeft(3).Xor(b) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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y = x.RotateAllLeft(5).Xor(c) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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z = y.RotateAllLeft(7).Xor(d) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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a, b, c, d = b.RotateAllLeft(1).Xor(a.RotateAllLeft(23)), // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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c.RotateAllLeft(1).Xor(b.RotateAllLeft(23)), // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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d.RotateAllLeft(1).Xor(c.RotateAllLeft(23)), // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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a.RotateAllLeft(1).Xor(d.RotateAllLeft(23)) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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w = z.RotateAllLeft(1).Xor(a) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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x = w.RotateAllLeft(3).Xor(b) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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y = x.RotateAllLeft(5).Xor(c) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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z = y.RotateAllLeft(7).Xor(d) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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a, b, c, d = b.RotateAllLeft(1).Xor(a.RotateAllLeft(23)), // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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c.RotateAllLeft(1).Xor(b.RotateAllLeft(23)), // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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d.RotateAllLeft(1).Xor(c.RotateAllLeft(23)), // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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a.RotateAllLeft(1).Xor(d.RotateAllLeft(23)) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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w = z.RotateAllLeft(1).Xor(a) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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x = w.RotateAllLeft(3).Xor(b) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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y = x.RotateAllLeft(5).Xor(c) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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z = y.RotateAllLeft(7).Xor(d) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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a, b, c, d = b.RotateAllLeft(1).Xor(a.RotateAllLeft(23)), // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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c.RotateAllLeft(1).Xor(b.RotateAllLeft(23)), // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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d.RotateAllLeft(1).Xor(c.RotateAllLeft(23)), // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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a.RotateAllLeft(1).Xor(d.RotateAllLeft(23)) // ERROR "inlining call to archsimd.Int64x4.RotateAllLeft"
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}
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shuf() // ERROR "inlining call to hasClosure.func1" "inlining call to archsimd.Int64x4.RotateAllLeft"
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shuf() // ERROR "inlining call to hasClosure.func1" "inlining call to archsimd.Int64x4.RotateAllLeft"
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shuf() // ERROR "inlining call to hasClosure.func1" "inlining call to archsimd.Int64x4.RotateAllLeft"
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shuf() // ERROR "inlining call to hasClosure.func1" "inlining call to archsimd.Int64x4.RotateAllLeft"
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shuf() // ERROR "inlining call to hasClosure.func1" "inlining call to archsimd.Int64x4.RotateAllLeft"
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shuf() // ERROR "inlining call to hasClosure.func1" "inlining call to archsimd.Int64x4.RotateAllLeft"
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shuf() // ERROR "inlining call to hasClosure.func1" "inlining call to archsimd.Int64x4.RotateAllLeft"
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shuf() // ERROR "inlining call to hasClosure.func1" "inlining call to archsimd.Int64x4.RotateAllLeft"
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shuf() // ERROR "inlining call to hasClosure.func1" "inlining call to archsimd.Int64x4.RotateAllLeft"
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return
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}
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