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a3593685cf
We generate MOVBLZX for byte-sized LoadReg, so (MOVBQZX (LoadReg (Arg))) is the same as (LoadReg (Arg)). Remove those zero extension where possible. Triggers several times during all.bash. Fixes #25378 Updates #15300 Change-Id: If50656e66f217832a13ee8f49c47997f4fcc093a Reviewed-on: https://go-review.googlesource.com/115617 Run-TryBot: Ilya Tocar <ilya.tocar@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
23 lines
433 B
Go
23 lines
433 B
Go
// asmcheck
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// Copyright 2018 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 codegen
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var wsp = [256]bool{
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' ': true,
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'\t': true,
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'\n': true,
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'\r': true,
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}
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func zeroExtArgByte(ch byte) bool {
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return wsp[ch] // amd64:-"MOVBLZX\t..,.."
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}
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func zeroExtArgUint16(ch uint16) bool {
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return wsp[ch] // amd64:-"MOVWLZX\t..,.."
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}
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