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5g, 6g, 8g: shift, opt fixes

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Fixes #1808.

R=ken2
CC=golang-dev
https://golang.org/cl/4813052
This commit is contained in:
Russ Cox 2011-07-28 18:22:12 -04:00
parent 8c23c1ab87
commit 28a23675cd
11 changed files with 132 additions and 41 deletions
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41
test/fixedbugs/bug356.go Normal file
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@ -0,0 +1,41 @@
// $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG: bug344
// Copyright 2011 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.
// issue 1808
package main
func main() {
var i uint64
var x int = 12345
if y := x << (i&5); y != 12345<<0 {
println("BUG bug344", y)
return
}
i++
if y := x << (i&5); y != 12345<<1 {
println("BUG bug344a", y)
}
i = 70
if y := x << i; y != 0 {
println("BUG bug344b", y)
}
i = 1<<32
if y := x << i; y != 0 {
println("BUG bug344c", y)
}
}
/*
typecheck [1008592b0]
. INDREG a(1) l(15) x(24) tc(2) runtime.ret G0 string
bug343.go:15: internal compiler error: typecheck INDREG
*/