mirror of
https://github.com/golang/go
synced 2024-11-24 00:20:14 -07:00
27ebc84716
Handle this case:
if 0 <= i && i < len(a) {
use a[i]
}
Shaves about 5k from pkg/tools/linux_amd64/*.
Change-Id: I6675ff49aa306b0d241b074c5738e448204cd981
Reviewed-on: https://go-review.googlesource.com/21431
Run-TryBot: Alexandru Moșoi <alexandru@mosoi.ro>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
447 lines
6.6 KiB
Go
447 lines
6.6 KiB
Go
// +build amd64
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// errorcheck -0 -d=ssa/prove/debug=3
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package main
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import "math"
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func f0(a []int) int {
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a[0] = 1
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a[0] = 1 // ERROR "Proved boolean IsInBounds$"
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a[6] = 1
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a[6] = 1 // ERROR "Proved boolean IsInBounds$"
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a[5] = 1 // ERROR "Proved IsInBounds$"
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a[5] = 1 // ERROR "Proved boolean IsInBounds$"
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return 13
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}
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func f1(a []int) int {
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if len(a) <= 5 {
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return 18
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}
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a[0] = 1 // ERROR "Proved non-negative bounds IsInBounds$"
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a[0] = 1 // ERROR "Proved boolean IsInBounds$"
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a[6] = 1
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a[6] = 1 // ERROR "Proved boolean IsInBounds$"
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a[5] = 1 // ERROR "Proved IsInBounds$"
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a[5] = 1 // ERROR "Proved boolean IsInBounds$"
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return 26
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}
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func f1b(a []int, i int, j uint) int {
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if i >= 0 && i < len(a) {
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return a[i] // ERROR "Proved non-negative bounds IsInBounds$"
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}
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if i >= 10 && i < len(a) {
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return a[i] // ERROR "Proved non-negative bounds IsInBounds$"
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}
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if i >= 10 && i < len(a) {
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return a[i] // ERROR "Proved non-negative bounds IsInBounds$"
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}
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if i >= 10 && i < len(a) { // todo: handle this case
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return a[i-10]
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}
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if j < uint(len(a)) {
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return a[j] // ERROR "Proved IsInBounds$"
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}
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return 0
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}
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func f1c(a []int, i int64) int {
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c := uint64(math.MaxInt64 + 10) // overflows int
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d := int64(c)
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if i >= d && i < int64(len(a)) {
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// d overflows, should not be handled.
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return a[i]
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}
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return 0
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}
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func f2(a []int) int {
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for i := range a {
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a[i+1] = i
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a[i+1] = i // ERROR "Proved boolean IsInBounds$"
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}
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return 34
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}
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func f3(a []uint) int {
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for i := uint(0); i < uint(len(a)); i++ {
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a[i] = i // ERROR "Proved IsInBounds$"
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}
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return 41
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}
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func f4a(a, b, c int) int {
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if a < b {
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if a == b { // ERROR "Disproved Eq64$"
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return 47
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}
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if a > b { // ERROR "Disproved Greater64$"
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return 50
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}
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if a < b { // ERROR "Proved boolean Less64$"
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return 53
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}
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if a == b { // ERROR "Disproved boolean Eq64$"
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return 56
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}
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if a > b { // ERROR "Disproved boolean Greater64$"
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return 59
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}
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return 61
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}
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return 63
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}
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func f4b(a, b, c int) int {
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if a <= b {
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if a >= b {
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if a == b { // ERROR "Proved Eq64$"
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return 70
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}
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return 75
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}
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return 77
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}
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return 79
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}
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func f4c(a, b, c int) int {
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if a <= b {
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if a >= b {
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if a != b { // ERROR "Disproved Neq64$"
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return 73
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}
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return 75
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}
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return 77
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}
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return 79
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}
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func f4d(a, b, c int) int {
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if a < b {
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if a < c {
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if a < b { // ERROR "Proved boolean Less64$"
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if a < c { // ERROR "Proved boolean Less64$"
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return 87
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}
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return 89
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}
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return 91
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}
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return 93
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}
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return 95
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}
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func f4e(a, b, c int) int {
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if a < b {
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if b > a { // ERROR "Proved Greater64$"
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return 101
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}
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return 103
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}
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return 105
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}
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func f4f(a, b, c int) int {
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if a <= b {
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if b > a {
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if b == a { // ERROR "Disproved Eq64$"
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return 112
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}
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return 114
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}
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if b >= a { // ERROR "Proved Geq64$"
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if b == a { // ERROR "Proved Eq64$"
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return 118
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}
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return 120
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}
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return 122
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}
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return 124
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}
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func f5(a, b uint) int {
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if a == b {
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if a <= b { // ERROR "Proved Leq64U$"
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return 130
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}
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return 132
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}
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return 134
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}
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// These comparisons are compile time constants.
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func f6a(a uint8) int {
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if a < a { // ERROR "Disproved Less8U$"
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return 140
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}
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return 151
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}
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func f6b(a uint8) int {
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if a < a { // ERROR "Disproved Less8U$"
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return 140
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}
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return 151
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}
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func f6x(a uint8) int {
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if a > a { // ERROR "Disproved Greater8U$"
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return 143
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}
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return 151
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}
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func f6d(a uint8) int {
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if a <= a { // ERROR "Proved Leq8U$"
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return 146
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}
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return 151
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}
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func f6e(a uint8) int {
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if a >= a { // ERROR "Proved Geq8U$"
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return 149
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}
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return 151
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}
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func f7(a []int, b int) int {
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if b < len(a) {
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a[b] = 3
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if b < len(a) { // ERROR "Proved boolean Less64$"
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a[b] = 5 // ERROR "Proved boolean IsInBounds$"
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}
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}
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return 161
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}
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func f8(a, b uint) int {
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if a == b {
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return 166
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}
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if a > b {
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return 169
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}
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if a < b { // ERROR "Proved Less64U$"
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return 172
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}
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return 174
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}
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func f9(a, b bool) int {
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if a {
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return 1
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}
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if a || b { // ERROR "Disproved boolean Arg$"
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return 2
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}
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return 3
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}
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func f10(a string) int {
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n := len(a)
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if a[:n>>1] == "aaa" {
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return 0
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}
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return 1
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}
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func f11a(a []int, i int) {
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useInt(a[i])
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useInt(a[i]) // ERROR "Proved boolean IsInBounds$"
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}
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func f11b(a []int, i int) {
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useSlice(a[i:])
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useSlice(a[i:]) // ERROR "Proved boolean IsSliceInBounds$"
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}
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func f11c(a []int, i int) {
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useSlice(a[:i])
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useSlice(a[:i]) // ERROR "Proved boolean IsSliceInBounds$"
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}
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func f11d(a []int, i int) {
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useInt(a[2*i+7])
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useInt(a[2*i+7])
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}
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func f12(a []int, b int) {
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useSlice(a[:b])
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}
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func f13a(a, b, c int, x bool) int {
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if a > 12 {
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if x {
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if a < 12 { // ERROR "Disproved Less64$"
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return 1
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}
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}
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if x {
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if a <= 12 { // ERROR "Disproved Leq64$"
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return 2
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}
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}
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if x {
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if a == 12 { // ERROR "Disproved Eq64$"
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return 3
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}
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}
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if x {
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if a >= 12 { // ERROR "Proved Geq64$"
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return 4
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}
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}
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if x {
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if a > 12 { // ERROR "Proved boolean Greater64$"
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return 5
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}
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}
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return 6
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}
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return 0
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}
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func f13b(a int, x bool) int {
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if a == -9 {
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if x {
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if a < -9 { // ERROR "Disproved Less64$"
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return 7
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}
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}
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if x {
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if a <= -9 { // ERROR "Proved Leq64$"
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return 8
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}
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}
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if x {
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if a == -9 { // ERROR "Proved boolean Eq64$"
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return 9
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}
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}
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if x {
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if a >= -9 { // ERROR "Proved Geq64$"
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return 10
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}
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}
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if x {
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if a > -9 { // ERROR "Disproved Greater64$"
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return 11
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}
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}
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return 12
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}
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return 0
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}
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func f13c(a int, x bool) int {
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if a < 90 {
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if x {
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if a < 90 { // ERROR "Proved boolean Less64$"
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return 13
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}
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}
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if x {
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if a <= 90 { // ERROR "Proved Leq64$"
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return 14
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}
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}
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if x {
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if a == 90 { // ERROR "Disproved Eq64$"
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return 15
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}
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}
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if x {
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if a >= 90 { // ERROR "Disproved Geq64$"
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return 16
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}
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}
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if x {
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if a > 90 { // ERROR "Disproved Greater64$"
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return 17
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}
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}
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return 18
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}
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return 0
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}
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func f13d(a int) int {
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if a < 5 {
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if a < 9 { // ERROR "Proved Less64$"
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return 1
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}
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}
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return 0
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}
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func f13e(a int) int {
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if a > 9 {
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if a > 5 { // ERROR "Proved Greater64$"
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return 1
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}
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}
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return 0
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}
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func f13f(a int64) int64 {
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if a > math.MaxInt64 {
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// Unreachable, but prove doesn't know that.
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if a == 0 {
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return 1
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}
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}
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return 0
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}
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func f13g(a int) int {
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if a < 3 {
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return 5
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}
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if a > 3 {
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return 6
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}
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if a == 3 { // ERROR "Proved Eq64$"
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return 7
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}
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return 8
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}
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func f13h(a int) int {
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if a < 3 {
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if a > 1 {
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if a == 2 { // ERROR "Proved Eq64$"
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return 5
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}
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}
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}
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return 0
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}
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func f13i(a uint) int {
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if a == 0 {
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return 1
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}
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if a > 0 { // ERROR "Proved Greater64U$"
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return 2
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}
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return 3
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}
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//go:noinline
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func useInt(a int) {
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}
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//go:noinline
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func useSlice(a []int) {
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}
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func main() {
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}
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