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https://github.com/golang/go
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a432d89137
This CL adds rules that replaces instances of ISEL that produce a boolean result based on a condition register by SETBC/SETBCR operations. On Power10 these are convereted to SETBC/SETBCR instructions that use one register instead of 3 registers conventionally used by ISEL and hence reduces register pressure. On loops written specifically to exercise such instances of ISEL extensively, a performance improvement of 2.5% is seen on Power10. Also added verification tests to verify correct generation of SETBC/SETBCR instructions on Power10. Change-Id: Ib719897f09d893de40324440a43052dca026e8fa Reviewed-on: https://go-review.googlesource.com/c/go/+/449795 Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Run-TryBot: Archana Ravindar <aravind5@in.ibm.com> Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gopher Robot <gobot@golang.org>
214 lines
5.9 KiB
Go
214 lines
5.9 KiB
Go
// asmcheck
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// Copyright 2020 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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// This file contains codegen tests related to boolean simplifications/optimizations.
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func convertNeq0B(x uint8, c bool) bool {
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// amd64:"ANDL\t[$]1",-"SETNE"
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// ppc64x:"ANDCC",-"CMPW",-"ISEL"
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b := x&1 != 0
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return c && b
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}
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func convertNeq0W(x uint16, c bool) bool {
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// amd64:"ANDL\t[$]1",-"SETNE"
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// ppc64x:"ANDCC",-"CMPW",-"ISEL"
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b := x&1 != 0
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return c && b
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}
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func convertNeq0L(x uint32, c bool) bool {
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// amd64:"ANDL\t[$]1",-"SETB"
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// ppc64x:"ANDCC",-"CMPW",-"ISEL"
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b := x&1 != 0
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return c && b
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}
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func convertNeq0Q(x uint64, c bool) bool {
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// amd64:"ANDL\t[$]1",-"SETB"
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// ppc64x:"ANDCC",-"CMP",-"ISEL"
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b := x&1 != 0
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return c && b
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}
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func convertNeqBool32(x uint32) bool {
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// ppc64x:"ANDCC",-"CMPW",-"ISEL"
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return x&1 != 0
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}
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func convertEqBool32(x uint32) bool {
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// ppc64x:"ANDCC",-"CMPW","XOR",-"ISEL"
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return x&1 == 0
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}
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func convertNeqBool64(x uint64) bool {
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// ppc64x:"ANDCC",-"CMP",-"ISEL"
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return x&1 != 0
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}
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func convertEqBool64(x uint64) bool {
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// ppc64x:"ANDCC","XOR",-"CMP",-"ISEL"
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return x&1 == 0
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}
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func TestSetEq64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBC\tCR0EQ",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0EQ"
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// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0EQ"
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b := x == y
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return b
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}
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func TestSetNeq64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBCR\tCR0EQ",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0EQ"
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// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0EQ"
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b := x != y
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return b
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}
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func TestSetLt64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBC\tCR0GT",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0GT"
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// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0GT"
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b := x < y
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return b
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}
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func TestSetLe64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBCR\tCR0LT",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0LT"
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// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0LT"
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b := x <= y
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return b
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}
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func TestSetGt64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0LT"
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// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0LT"
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b := x > y
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return b
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}
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func TestSetGe64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBCR\tCR0GT",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0GT"
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// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0GT"
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b := x >= y
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return b
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}
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func TestSetLtFp64(x float64, y float64) bool {
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// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
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// ppc64x/power9:"FCMP","ISEL",-"SETBC\tCR0LT"
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// ppc64x/power8:"FCMP","ISEL",-"SETBC\tCR0LT"
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b := x < y
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return b
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}
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func TestSetLeFp64(x float64, y float64) bool {
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// ppc64x/power10:"SETBC\tCR0LT","SETBC\tCR0EQ","OR",-"ISEL",-"ISEL"
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// ppc64x/power9:"ISEL","ISEL",-"SETBC\tCR0LT",-"SETBC\tCR0EQ","OR"
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// ppc64x/power8:"ISEL","ISEL",-"SETBC\tCR0LT",-"SETBC\tCR0EQ","OR"
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b := x <= y
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return b
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}
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func TestSetGtFp64(x float64, y float64) bool {
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// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
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// ppc64x/power9:"FCMP","ISEL",-"SETBC\tCR0LT"
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// ppc64x/power8:"FCMP","ISEL",-"SETBC\tCR0LT"
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b := x > y
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return b
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}
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func TestSetGeFp64(x float64, y float64) bool {
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// ppc64x/power10:"SETBC\tCR0LT","SETBC\tCR0EQ","OR",-"ISEL",-"ISEL"
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// ppc64x/power9:"ISEL","ISEL",-"SETBC\tCR0LT",-"SETBC\tCR0EQ","OR"
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// ppc64x/power8:"ISEL","ISEL",-"SETBC\tCR0LT",-"SETBC\tCR0EQ","OR"
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b := x >= y
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return b
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}
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func TestSetInvEq64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBCR\tCR0EQ",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0EQ"
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// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0EQ"
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b := !(x == y)
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return b
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}
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func TestSetInvNeq64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBC\tCR0EQ",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0EQ"
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// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0EQ"
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b := !(x != y)
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return b
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}
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func TestSetInvLt64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBCR\tCR0GT",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0GT"
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// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0GT"
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b := !(x < y)
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return b
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}
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func TestSetInvLe64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0LT"
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// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0LT"
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b := !(x <= y)
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return b
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}
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func TestSetInvGt64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBCR\tCR0LT",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0LT"
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// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0LT"
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b := !(x > y)
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return b
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}
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func TestSetInvGe64(x uint64, y uint64) bool {
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// ppc64x/power10:"SETBC\tCR0GT",-"ISEL"
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// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0GT"
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// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0GT"
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b := !(x >= y)
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return b
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}
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func TestSetInvEqFp64(x float64, y float64) bool {
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// ppc64x/power10:"SETBCR\tCR0EQ",-"ISEL"
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// ppc64x/power9:"FCMP","ISEL",-"SETBCR\tCR0EQ"
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// ppc64x/power8:"FCMP","ISEL",-"SETBCR\tCR0EQ"
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b := !(x == y)
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return b
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}
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func TestSetInvNeqFp64(x float64, y float64) bool {
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// ppc64x/power10:"SETBC\tCR0EQ",-"ISEL"
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// ppc64x/power9:"FCMP","ISEL",-"SETBC\tCR0EQ"
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// ppc64x/power8:"FCMP","ISEL",-"SETBC\tCR0EQ"
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b := !(x != y)
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return b
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}
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func TestSetInvLtFp64(x float64, y float64) bool {
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// ppc64x/power10:"SETBCR\tCR0LT",-"ISEL"
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// ppc64x/power9:"FCMP","ISEL",-"SETBCR\tCR0LT"
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// ppc64x/power8:"FCMP","ISEL",-"SETBCR\tCR0LT"
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b := !(x < y)
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return b
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}
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func TestSetInvLeFp64(x float64, y float64) bool {
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// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
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// ppc64x/power9:"FCMP","ISEL",-"SETBC\tCR0LT"
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// ppc64x/power8:"FCMP","ISEL",-"SETBC\tCR0LT"
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b := !(x <= y)
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return b
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}
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func TestSetInvGtFp64(x float64, y float64) bool {
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// ppc64x/power10:"SETBCR\tCR0LT",-"ISEL"
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// ppc64x/power9:"FCMP","ISEL",-"SETBCR\tCR0LT"
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// ppc64x/power8:"FCMP","ISEL",-"SETBCR\tCR0LT"
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b := !(x > y)
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return b
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}
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func TestSetInvGeFp64(x float64, y float64) bool {
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// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
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// ppc64x/power9:"FCMP","ISEL",-"SETBC\tCR0LT"
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// ppc64x/power8:"FCMP","ISEL",-"SETBC\tCR0LT"
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b := !(x >= y)
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return b
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}
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