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36ecff0893
Check for shifted 16b constants, and transform them to avoid the load penalty. This should be much faster than loading, and reduce binary size by reducing the constant pool size. Change-Id: I6834e08be7ca88e3b77449d226d08d199db84299 Reviewed-on: https://go-review.googlesource.com/c/go/+/531119 TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by: Michael Pratt <mpratt@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Paul Murphy <murp@ibm.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
26 lines
771 B
Go
26 lines
771 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 codegen
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func shifted16BitConstants(out [64]uint64) {
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// ppc64x: "MOVD\t[$]8193,", "SLD\t[$]27,"
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out[0] = 0x0000010008000000
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// ppc64x: "MOVD\t[$]-32767", "SLD\t[$]26,"
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out[1] = 0xFFFFFE0004000000
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// ppc64x: "MOVD\t[$]-1", "SLD\t[$]48,"
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out[2] = 0xFFFF000000000000
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// ppc64x: "MOVD\t[$]65535", "SLD\t[$]44,"
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out[3] = 0x0FFFF00000000000
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// ppc64x: "MOVD\t[$]i64.fffff00000000001[(]SB[)]"
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out[4] = 0xFFFFF00000000001
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// ppc64x: "MOVD\t[$]i64.fffff80000000001[(]SB[)]"
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out[5] = 0xFFFFF80000000001
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// ppc64x: "MOVD\t[$]i64.0ffff80000000000[(]SB[)]"
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out[6] = 0x0FFFF80000000000
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}
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