mirror of
https://github.com/golang/go.git
synced 2025-05-06 08:03:03 +00:00
80834af206
In the PPC64 ISA, the instruction to do an 'and' operation using an immediate constant is only available in the form that also sets CR0 (i.e. clobbers the condition register.) This means CR0 is being clobbered unnecessarily in many cases. That affects some decisions made during some compiler passes that check for it. In those cases when the constant used by the ANDCC is a right justified consecutive set of bits, a shift instruction can be used which has the same effect if CR0 does not need to be set. The rule to do that has been added to the late rules file after other rules using ANDCCconst have been processed in the main rules file. Some codegen tests had to be updated since ANDCC is no longer generated for some cases. A new test case was added to verify the ANDCC is present if the results for both the AND and CR0 are used. Change-Id: I304f607c039a458e2d67d25351dd00aea72ba542 Reviewed-on: https://go-review.googlesource.com/c/go/+/531435 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by: Paul Murphy <murp@ibm.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Carlos Amedee <carlos@golang.org> Reviewed-by: Jayanth Krishnamurthy <jayanth.krishnamurthy@ibm.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
222 lines
6.0 KiB
Go
222 lines
6.0 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[$]1",-"SETNE"
|
|
// ppc64x:"RLDICL",-"CMPW",-"ISEL"
|
|
b := x&1 != 0
|
|
return c && b
|
|
}
|
|
|
|
func convertNeq0W(x uint16, c bool) bool {
|
|
// amd64:"ANDL\t[$]1",-"SETNE"
|
|
// ppc64x:"RLDICL",-"CMPW",-"ISEL"
|
|
b := x&1 != 0
|
|
return c && b
|
|
}
|
|
|
|
func convertNeq0L(x uint32, c bool) bool {
|
|
// amd64:"ANDL\t[$]1",-"SETB"
|
|
// ppc64x:"RLDICL",-"CMPW",-"ISEL"
|
|
b := x&1 != 0
|
|
return c && b
|
|
}
|
|
|
|
func convertNeq0Q(x uint64, c bool) bool {
|
|
// amd64:"ANDL\t[$]1",-"SETB"
|
|
// ppc64x:"RLDICL",-"CMP",-"ISEL"
|
|
b := x&1 != 0
|
|
return c && b
|
|
}
|
|
|
|
func convertNeqBool32(x uint32) bool {
|
|
// ppc64x:"RLDICL",-"CMPW",-"ISEL"
|
|
return x&1 != 0
|
|
}
|
|
|
|
func convertEqBool32(x uint32) bool {
|
|
// ppc64x:"RLDICL",-"CMPW","XOR",-"ISEL"
|
|
return x&1 == 0
|
|
}
|
|
|
|
func convertNeqBool64(x uint64) bool {
|
|
// ppc64x:"RLDICL",-"CMP",-"ISEL"
|
|
return x&1 != 0
|
|
}
|
|
|
|
func convertEqBool64(x uint64) bool {
|
|
// ppc64x:"RLDICL","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
|
|
}
|
|
func TestAndCompareZero(x uint64, y uint64) uint64 {
|
|
// ppc64x:"ANDCC"
|
|
b := x&3
|
|
if b!=0 {
|
|
return b
|
|
}
|
|
return b+8
|
|
}
|