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915c1839fe
Separate patterns in asmcheck by spaces instead of commas. Many patterns end in comma (like "MOV [$]123,") so separating patterns by comma is not great; they're already quoted, so spaces are fine. Also replace all tabs in the assembly lines with spaces before matching. Finally, replace \$ or \\$ with [$] as the matching idiom. The effect of all these is to make the patterns look like: // amd64:"BSFQ" "ORQ [$]256" instead of the old: // amd64:"BSFQ","ORQ\t\\$256" Update all tests as well. Change-Id: Ia39febe5d7f67ba115846422789e11b185d5c807 Reviewed-on: https://go-review.googlesource.com/c/go/+/716060 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Alan Donovan <adonovan@google.com> Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
298 lines
7.2 KiB
Go
298 lines
7.2 KiB
Go
// asmcheck
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// Copyright 2019 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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import "math"
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// Notes:
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// - these examples use channels to provide a source of
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// unknown values that cannot be optimized away
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// - these examples use for loops to force branches
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// backward (predicted taken)
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// ---------------------------------- //
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// signed integer range (conjunction) //
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// ---------------------------------- //
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func si1c(c <-chan int64) {
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// amd64:"CMPQ .+, [$]256"
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// s390x:"CLGIJ [$]12, R[0-9]+, [$]255"
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for x := <-c; x >= 0 && x < 256; x = <-c {
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}
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}
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func si2c(c <-chan int32) {
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// amd64:"CMPL .+, [$]256"
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// s390x:"CLIJ [$]12, R[0-9]+, [$]255"
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for x := <-c; x >= 0 && x < 256; x = <-c {
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}
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}
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func si3c(c <-chan int16) {
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// amd64:"CMPW .+, [$]256"
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// s390x:"CLIJ [$]12, R[0-9]+, [$]255"
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for x := <-c; x >= 0 && x < 256; x = <-c {
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}
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}
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func si4c(c <-chan int8) {
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// amd64:"CMPB .+, [$]10"
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// s390x:"CLIJ [$]4, R[0-9]+, [$]10"
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for x := <-c; x >= 0 && x < 10; x = <-c {
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}
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}
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func si5c(c <-chan int64) {
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// amd64:"CMPQ .+, [$]251" "ADDQ [$]-5,"
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// s390x:"CLGIJ [$]4, R[0-9]+, [$]251" "ADD [$]-5,"
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for x := <-c; x < 256 && x > 4; x = <-c {
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}
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}
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func si6c(c <-chan int32) {
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// amd64:"CMPL .+, [$]255" "DECL "
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// s390x:"CLIJ [$]12, R[0-9]+, [$]255" "ADDW [$]-1,"
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for x := <-c; x > 0 && x <= 256; x = <-c {
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}
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}
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func si7c(c <-chan int16) {
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// amd64:"CMPW .+, [$]60" "ADDL [$]10,"
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// s390x:"CLIJ [$]12, R[0-9]+, [$]60" "ADDW [$]10,"
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for x := <-c; x >= -10 && x <= 50; x = <-c {
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}
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}
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func si8c(c <-chan int8) {
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// amd64:"CMPB .+, [$]126" "ADDL [$]126,"
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// s390x:"CLIJ [$]4, R[0-9]+, [$]126" "ADDW [$]126,"
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for x := <-c; x >= -126 && x < 0; x = <-c {
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}
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}
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// ---------------------------------- //
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// signed integer range (disjunction) //
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// ---------------------------------- //
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func si1d(c <-chan int64) {
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// amd64:"CMPQ .+, [$]256"
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// s390x:"CLGIJ [$]2, R[0-9]+, [$]255"
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for x := <-c; x < 0 || x >= 256; x = <-c {
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}
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}
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func si2d(c <-chan int32) {
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// amd64:"CMPL .+, [$]256"
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// s390x:"CLIJ [$]2, R[0-9]+, [$]255"
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for x := <-c; x < 0 || x >= 256; x = <-c {
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}
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}
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func si3d(c <-chan int16) {
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// amd64:"CMPW .+, [$]256"
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// s390x:"CLIJ [$]2, R[0-9]+, [$]255"
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for x := <-c; x < 0 || x >= 256; x = <-c {
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}
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}
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func si4d(c <-chan int8) {
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// amd64:"CMPB .+, [$]10"
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// s390x:"CLIJ [$]10, R[0-9]+, [$]10"
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for x := <-c; x < 0 || x >= 10; x = <-c {
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}
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}
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func si5d(c <-chan int64) {
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// amd64:"CMPQ .+, [$]251" "ADDQ [$]-5,"
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// s390x:"CLGIJ [$]10, R[0-9]+, [$]251" "ADD [$]-5,"
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for x := <-c; x >= 256 || x <= 4; x = <-c {
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}
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}
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func si6d(c <-chan int32) {
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// amd64:"CMPL .+, [$]255" "DECL "
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// s390x:"CLIJ [$]2, R[0-9]+, [$]255" "ADDW [$]-1,"
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for x := <-c; x <= 0 || x > 256; x = <-c {
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}
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}
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func si7d(c <-chan int16) {
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// amd64:"CMPW .+, [$]60" "ADDL [$]10,"
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// s390x:"CLIJ [$]2, R[0-9]+, [$]60" "ADDW [$]10,"
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for x := <-c; x < -10 || x > 50; x = <-c {
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}
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}
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func si8d(c <-chan int8) {
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// amd64:"CMPB .+, [$]126" "ADDL [$]126,"
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// s390x:"CLIJ [$]10, R[0-9]+, [$]126" "ADDW [$]126,"
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for x := <-c; x < -126 || x >= 0; x = <-c {
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}
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}
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// ------------------------------------ //
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// unsigned integer range (conjunction) //
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// ------------------------------------ //
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func ui1c(c <-chan uint64) {
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// amd64:"CMPQ .+, [$]251" "ADDQ [$]-5,"
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// s390x:"CLGIJ [$]4, R[0-9]+, [$]251" "ADD [$]-5,"
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for x := <-c; x < 256 && x > 4; x = <-c {
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}
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}
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func ui2c(c <-chan uint32) {
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// amd64:"CMPL .+, [$]255" "DECL "
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// s390x:"CLIJ [$]12, R[0-9]+, [$]255" "ADDW [$]-1,"
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for x := <-c; x > 0 && x <= 256; x = <-c {
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}
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}
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func ui3c(c <-chan uint16) {
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// amd64:"CMPW .+, [$]40" "ADDL [$]-10,"
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// s390x:"CLIJ [$]12, R[0-9]+, [$]40" "ADDW [$]-10,"
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for x := <-c; x >= 10 && x <= 50; x = <-c {
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}
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}
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func ui4c(c <-chan uint8) {
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// amd64:"CMPB .+, [$]2" "ADDL [$]-126,"
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// s390x:"CLIJ [$]4, R[0-9]+, [$]2" "ADDW [$]-126,"
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for x := <-c; x >= 126 && x < 128; x = <-c {
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}
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}
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// ------------------------------------ //
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// unsigned integer range (disjunction) //
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// ------------------------------------ //
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func ui1d(c <-chan uint64) {
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// amd64:"CMPQ .+, [$]251" "ADDQ [$]-5,"
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// s390x:"CLGIJ [$]10, R[0-9]+, [$]251" "ADD [$]-5,"
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for x := <-c; x >= 256 || x <= 4; x = <-c {
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}
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}
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func ui2d(c <-chan uint32) {
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// amd64:"CMPL .+, [$]254" "ADDL [$]-2,"
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// s390x:"CLIJ [$]2, R[0-9]+, [$]254" "ADDW [$]-2,"
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for x := <-c; x <= 1 || x > 256; x = <-c {
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}
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}
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func ui3d(c <-chan uint16) {
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// amd64:"CMPW .+, [$]40" "ADDL [$]-10,"
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// s390x:"CLIJ [$]2, R[0-9]+, [$]40" "ADDW [$]-10,"
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for x := <-c; x < 10 || x > 50; x = <-c {
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}
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}
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func ui4d(c <-chan uint8) {
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// amd64:"CMPB .+, [$]2" "ADDL [$]-126,"
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// s390x:"CLIJ [$]10, R[0-9]+, [$]2" "ADDW [$]-126,"
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for x := <-c; x < 126 || x >= 128; x = <-c {
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}
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}
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// -------------------------------------//
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// merge NaN checks //
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// ------------------------------------ //
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func f64NaNOrPosInf(c <-chan float64) {
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// This test assumes IsInf(x, 1) is implemented as x > MaxFloat rather than x == Inf(1).
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// amd64:"JCS" -"JNE" -"JPS" -"JPC"
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// riscv64:"FCLASSD" -"FLED" -"FLTD" -"FNED" -"FEQD"
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for x := <-c; math.IsNaN(x) || math.IsInf(x, 1); x = <-c {
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}
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}
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func f64NaNOrNegInf(c <-chan float64) {
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// This test assumes IsInf(x, -1) is implemented as x < -MaxFloat rather than x == Inf(-1).
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// amd64:"JCS" -"JNE" -"JPS" -"JPC"
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// riscv64:"FCLASSD" -"FLED" -"FLTD" -"FNED" -"FEQD"
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for x := <-c; math.IsNaN(x) || math.IsInf(x, -1); x = <-c {
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}
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}
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func f64NaNOrLtOne(c <-chan float64) {
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// amd64:"JCS" -"JNE" -"JPS" -"JPC"
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// riscv64:"FLED" -"FLTD" -"FNED" -"FEQD"
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for x := <-c; math.IsNaN(x) || x < 1; x = <-c {
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}
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}
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func f64NaNOrLteOne(c <-chan float64) {
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// amd64:"JLS" -"JNE" -"JPS" -"JPC"
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// riscv64:"FLTD" -"FLED" -"FNED" -"FEQD"
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for x := <-c; x <= 1 || math.IsNaN(x); x = <-c {
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}
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}
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func f64NaNOrGtOne(c <-chan float64) {
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// amd64:"JCS" -"JNE" -"JPS" -"JPC"
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// riscv64:"FLED" -"FLTD" -"FNED" -"FEQD"
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for x := <-c; math.IsNaN(x) || x > 1; x = <-c {
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}
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}
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func f64NaNOrGteOne(c <-chan float64) {
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// amd64:"JLS" -"JNE" -"JPS" -"JPC"
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// riscv64:"FLTD" -"FLED" -"FNED" -"FEQD"
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for x := <-c; x >= 1 || math.IsNaN(x); x = <-c {
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}
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}
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func f32NaNOrLtOne(c <-chan float32) {
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// amd64:"JCS" -"JNE" -"JPS" -"JPC"
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// riscv64:"FLES" -"FLTS" -"FNES" -"FEQS"
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for x := <-c; x < 1 || x != x; x = <-c {
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}
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}
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func f32NaNOrLteOne(c <-chan float32) {
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// amd64:"JLS" -"JNE" -"JPS" -"JPC"
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// riscv64:"FLTS" -"FLES" -"FNES" -"FEQS"
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for x := <-c; x != x || x <= 1; x = <-c {
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}
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}
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func f32NaNOrGtOne(c <-chan float32) {
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// amd64:"JCS" -"JNE" -"JPS" -"JPC"
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// riscv64:"FLES" -"FLTS" -"FNES" -"FEQS"
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for x := <-c; x > 1 || x != x; x = <-c {
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}
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}
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func f32NaNOrGteOne(c <-chan float32) {
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// amd64:"JLS" -"JNE" -"JPS" -"JPC"
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// riscv64:"FLTS" -"FLES" -"FNES" -"FEQS"
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for x := <-c; x != x || x >= 1; x = <-c {
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}
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}
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// ------------------------------------ //
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// regressions //
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// ------------------------------------ //
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func gte4(x uint64) bool {
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return x >= 4
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}
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func lt20(x uint64) bool {
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return x < 20
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}
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func issue74915(c <-chan uint64) {
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// Check that the optimization is not blocked by function inlining.
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// amd64:"CMPQ .+, [$]16" "ADDQ [$]-4,"
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// s390x:"CLGIJ [$]4, R[0-9]+, [$]16" "ADD [$]-4,"
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for x := <-c; gte4(x) && lt20(x); x = <-c {
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}
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}
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