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go/test/fixedbugs/issue16733.go
Keith Randall d251030fa6 cmd/compile: don't fold >32bit constants into a MULQ
Don't fold constant factors into a multiply
beyond the capacity of a MULQ instruction (32 bits).

Fixes #16733

Change-Id: Idc213c6cb06f7c94008a8cf9e60a9e77d085fd89
Reviewed-on: https://go-review.googlesource.com/27160
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-16 16:46:48 +00:00

17 lines
364 B
Go

// compile
// Copyright 2016 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 16733: don't fold constant factors into a multiply
// beyond the capacity of a MULQ instruction (32 bits).
package p
func f(n int64) int64 {
n *= 1000000
n *= 1000000
return n
}