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6224db9b4d
When scheduling a block, deprioritize values whose results aren't used until subsequent blocks. For #58166, this has the effect of pushing the induction variable increment to the end of the block, past all the other uses of the pre-incremented value. Do this only with optimizations on. Debuggers have a preference for values in source code order, which this CL can degrade. Fixes #58166 Fixes #57976 Change-Id: I40d5885c661b142443c6d4702294c8abe8026c4f Reviewed-on: https://go-review.googlesource.com/c/go/+/463751 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
24 lines
554 B
Go
24 lines
554 B
Go
// asmcheck
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// Copyright 2023 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 p
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func dgemmSerialNotNot(m, n, k int, a []float64, lda int, b []float64, ldb int, c []float64, ldc int, alpha float64) {
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for i := 0; i < m; i++ {
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ctmp := c[i*ldc : i*ldc+n]
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for l, v := range a[i*lda : i*lda+k] {
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tmp := alpha * v
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if tmp != 0 {
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x := b[l*ldb : l*ldb+n]
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// amd64:"INCQ"
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for i, v := range x {
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ctmp[i] += tmp * v
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}
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}
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}
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}
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}
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