mirror of
https://github.com/golang/go
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3b96eebcbd
Handles a lot more cases where constant ranges can eliminate various (mostly bounds failure) paths. Fixes #66826 Fixes #66692 Fixes #48213 Update #57959 TODO: remove constant logic from poset code, no longer needed. Change-Id: Id196436fcd8a0c84c7d59c04f93bd92e26a0fd7e Reviewed-on: https://go-review.googlesource.com/c/go/+/599096 Reviewed-by: David Chase <drchase@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Knyszek <mknyszek@google.com>
34 lines
654 B
Go
34 lines
654 B
Go
// errorcheck -0 -d=ssa/prove/debug=2
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//go:build amd64
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// Copyright 2022 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 main
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func f0i(x int) int {
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if x == 20 {
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return x // ERROR "Proved.+is constant 20$"
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}
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if (x + 20) == 20 {
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return x + 5 // ERROR "Proved.+is constant 0$" "Proved.+is constant 5$"
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}
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return x / 2
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}
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func f0u(x uint) uint {
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if x == 20 {
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return x // ERROR "Proved.+is constant 20$"
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}
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if (x + 20) == 20 {
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return x + 5 // ERROR "Proved.+is constant 0$" "Proved.+is constant 5$"
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}
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return x / 2
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}
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