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master
test/fixedbugs/issue32680.go
23 строки
687 B
David Chase
cmd/compile: add necessary operand to mergePoint in rewrite rules
20 июн 2019, 19:56
20 июн 2019, 19:56
769fda2
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// run -gcflags=-d=ssa/check/on // Copyright 2019 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. // As of 2019-06, bug affects/ed amd64 and s390x. package main var foo = []byte{105, 57, 172, 152} func main() { for i := 0; i < len(foo); i += 4 { // Requires inlining and non-constant i // Note the bug/fix also apply to different widths, but was unable to reproduce for those. println(readLittleEndian32_2(foo[i], foo[i+1], foo[i+2], foo[i+3])) } } func readLittleEndian32_2(a, b, c, d byte) uint32 { return uint32(a) | (uint32(b) << 8) | (uint32(c) << 16) | (uint32(d) << 24) }