From 21de6bc463e52af01bcbfda478e2cb221e982e41 Mon Sep 17 00:00:00 2001 From: wdvxdr Date: Mon, 30 Aug 2021 22:26:54 +0800 Subject: cmd/compile: simplify less with non-negative number and constant 0 or 1 The most common cases: len(s) > 0 len(s) < 1 and they can be simplified to: len(s) != 0 len(s) == 0 Fixes #48054 Change-Id: I16e5b0cffcfab62a4acc2a09977a6cd3543dd000 Reviewed-on: https://go-review.googlesource.com/c/go/+/346050 Reviewed-by: Keith Randall Reviewed-by: Cherry Mui --- test/codegen/issue48054.go | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 test/codegen/issue48054.go (limited to 'test/codegen') diff --git a/test/codegen/issue48054.go b/test/codegen/issue48054.go new file mode 100644 index 0000000000..6ef37e9452 --- /dev/null +++ b/test/codegen/issue48054.go @@ -0,0 +1,31 @@ +// asmcheck + +// Copyright 2021 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 main + +func a(n string) bool { + // arm64:"CBZ" + if len(n) > 0 { + return true + } + return false +} + +func a2(n []int) bool { + // arm64:"CBZ" + if len(n) > 0 { + return true + } + return false +} + +func a3(n []int) bool { + // amd64:"TESTQ" + if len(n) < 1 { + return true + } + return false +} -- cgit v1.3