mirror of
https://github.com/golang/go.git
synced 2025-11-04 02:30:57 +00:00
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>
213 lines
5.9 KiB
Go
213 lines
5.9 KiB
Go
// asmcheck
|
|
|
|
// Copyright 2020 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package codegen
|
|
|
|
// This file contains codegen tests related to boolean simplifications/optimizations.
|
|
|
|
func convertNeq0B(x uint8, c bool) bool {
|
|
// amd64:"ANDL\t[$]1",-"SETNE"
|
|
// ppc64x:"ANDCC",-"CMPW",-"ISEL"
|
|
b := x&1 != 0
|
|
return c && b
|
|
}
|
|
|
|
func convertNeq0W(x uint16, c bool) bool {
|
|
// amd64:"ANDL\t[$]1",-"SETNE"
|
|
// ppc64x:"ANDCC",-"CMPW",-"ISEL"
|
|
b := x&1 != 0
|
|
return c && b
|
|
}
|
|
|
|
func convertNeq0L(x uint32, c bool) bool {
|
|
// amd64:"ANDL\t[$]1",-"SETB"
|
|
// ppc64x:"ANDCC",-"CMPW",-"ISEL"
|
|
b := x&1 != 0
|
|
return c && b
|
|
}
|
|
|
|
func convertNeq0Q(x uint64, c bool) bool {
|
|
// amd64:"ANDL\t[$]1",-"SETB"
|
|
// ppc64x:"ANDCC",-"CMP",-"ISEL"
|
|
b := x&1 != 0
|
|
return c && b
|
|
}
|
|
|
|
func convertNeqBool32(x uint32) bool {
|
|
// ppc64x:"ANDCC",-"CMPW",-"ISEL"
|
|
return x&1 != 0
|
|
}
|
|
|
|
func convertEqBool32(x uint32) bool {
|
|
// ppc64x:"ANDCC",-"CMPW","XOR",-"ISEL"
|
|
return x&1 == 0
|
|
}
|
|
|
|
func convertNeqBool64(x uint64) bool {
|
|
// ppc64x:"ANDCC",-"CMP",-"ISEL"
|
|
return x&1 != 0
|
|
}
|
|
|
|
func convertEqBool64(x uint64) bool {
|
|
// ppc64x:"ANDCC","XOR",-"CMP",-"ISEL"
|
|
return x&1 == 0
|
|
}
|
|
|
|
func TestSetEq64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0EQ",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0EQ"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0EQ"
|
|
b := x == y
|
|
return b
|
|
}
|
|
func TestSetNeq64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBCR\tCR0EQ",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0EQ"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0EQ"
|
|
b := x != y
|
|
return b
|
|
}
|
|
func TestSetLt64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0GT",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0GT"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0GT"
|
|
b := x < y
|
|
return b
|
|
}
|
|
func TestSetLe64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBCR\tCR0LT",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0LT"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0LT"
|
|
b := x <= y
|
|
return b
|
|
}
|
|
func TestSetGt64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0LT"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0LT"
|
|
b := x > y
|
|
return b
|
|
}
|
|
func TestSetGe64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBCR\tCR0GT",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0GT"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0GT"
|
|
b := x >= y
|
|
return b
|
|
}
|
|
func TestSetLtFp64(x float64, y float64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
|
|
// ppc64x/power9:"FCMP","ISEL",-"SETBC\tCR0LT"
|
|
// ppc64x/power8:"FCMP","ISEL",-"SETBC\tCR0LT"
|
|
b := x < y
|
|
return b
|
|
}
|
|
func TestSetLeFp64(x float64, y float64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0LT","SETBC\tCR0EQ","OR",-"ISEL",-"ISEL"
|
|
// ppc64x/power9:"ISEL","ISEL",-"SETBC\tCR0LT",-"SETBC\tCR0EQ","OR"
|
|
// ppc64x/power8:"ISEL","ISEL",-"SETBC\tCR0LT",-"SETBC\tCR0EQ","OR"
|
|
b := x <= y
|
|
return b
|
|
}
|
|
func TestSetGtFp64(x float64, y float64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
|
|
// ppc64x/power9:"FCMP","ISEL",-"SETBC\tCR0LT"
|
|
// ppc64x/power8:"FCMP","ISEL",-"SETBC\tCR0LT"
|
|
b := x > y
|
|
return b
|
|
}
|
|
func TestSetGeFp64(x float64, y float64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0LT","SETBC\tCR0EQ","OR",-"ISEL",-"ISEL"
|
|
// ppc64x/power9:"ISEL","ISEL",-"SETBC\tCR0LT",-"SETBC\tCR0EQ","OR"
|
|
// ppc64x/power8:"ISEL","ISEL",-"SETBC\tCR0LT",-"SETBC\tCR0EQ","OR"
|
|
b := x >= y
|
|
return b
|
|
}
|
|
func TestSetInvEq64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBCR\tCR0EQ",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0EQ"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0EQ"
|
|
b := !(x == y)
|
|
return b
|
|
}
|
|
func TestSetInvNeq64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0EQ",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0EQ"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0EQ"
|
|
b := !(x != y)
|
|
return b
|
|
}
|
|
func TestSetInvLt64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBCR\tCR0GT",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0GT"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0GT"
|
|
b := !(x < y)
|
|
return b
|
|
}
|
|
func TestSetInvLe64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0LT"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0LT"
|
|
b := !(x <= y)
|
|
return b
|
|
}
|
|
func TestSetInvGt64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBCR\tCR0LT",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBCR\tCR0LT"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBCR\tCR0LT"
|
|
b := !(x > y)
|
|
return b
|
|
}
|
|
func TestSetInvGe64(x uint64, y uint64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0GT",-"ISEL"
|
|
// ppc64x/power9:"CMP","ISEL",-"SETBC\tCR0GT"
|
|
// ppc64x/power8:"CMP","ISEL",-"SETBC\tCR0GT"
|
|
b := !(x >= y)
|
|
return b
|
|
}
|
|
|
|
func TestSetInvEqFp64(x float64, y float64) bool {
|
|
// ppc64x/power10:"SETBCR\tCR0EQ",-"ISEL"
|
|
// ppc64x/power9:"FCMP","ISEL",-"SETBCR\tCR0EQ"
|
|
// ppc64x/power8:"FCMP","ISEL",-"SETBCR\tCR0EQ"
|
|
b := !(x == y)
|
|
return b
|
|
}
|
|
func TestSetInvNeqFp64(x float64, y float64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0EQ",-"ISEL"
|
|
// ppc64x/power9:"FCMP","ISEL",-"SETBC\tCR0EQ"
|
|
// ppc64x/power8:"FCMP","ISEL",-"SETBC\tCR0EQ"
|
|
b := !(x != y)
|
|
return b
|
|
}
|
|
func TestSetInvLtFp64(x float64, y float64) bool {
|
|
// ppc64x/power10:"SETBCR\tCR0LT",-"ISEL"
|
|
// ppc64x/power9:"FCMP","ISEL",-"SETBCR\tCR0LT"
|
|
// ppc64x/power8:"FCMP","ISEL",-"SETBCR\tCR0LT"
|
|
b := !(x < y)
|
|
return b
|
|
}
|
|
func TestSetInvLeFp64(x float64, y float64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
|
|
// ppc64x/power9:"FCMP","ISEL",-"SETBC\tCR0LT"
|
|
// ppc64x/power8:"FCMP","ISEL",-"SETBC\tCR0LT"
|
|
b := !(x <= y)
|
|
return b
|
|
}
|
|
func TestSetInvGtFp64(x float64, y float64) bool {
|
|
// ppc64x/power10:"SETBCR\tCR0LT",-"ISEL"
|
|
// ppc64x/power9:"FCMP","ISEL",-"SETBCR\tCR0LT"
|
|
// ppc64x/power8:"FCMP","ISEL",-"SETBCR\tCR0LT"
|
|
b := !(x > y)
|
|
return b
|
|
}
|
|
func TestSetInvGeFp64(x float64, y float64) bool {
|
|
// ppc64x/power10:"SETBC\tCR0LT",-"ISEL"
|
|
// ppc64x/power9:"FCMP","ISEL",-"SETBC\tCR0LT"
|
|
// ppc64x/power8:"FCMP","ISEL",-"SETBC\tCR0LT"
|
|
b := !(x >= y)
|
|
return b
|
|
}
|