1// run
2
3// Copyright 2012 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7// Issue 3835: 8g tries to optimize arithmetic involving integer
8// constants, but can run out of registers in the process.
9
10package main
11
12var a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, A, B, C, D, E, F, G int
13
14func foo() int {
15	return a + 1 + b + 2 + c + 3 + d + 4 + e + 5 + f + 6 + g + 7 + h + 8 + i + 9 + j + 10 +
16		k + 1 + l + 2 + m + 3 + n + 4 + o + 5 + p + 6 + q + 7 + r + 8 + s + 9 + t + 10 +
17		u + 1 + v + 2 + w + 3 + x + 4 + y + 5 + z + 6 + A + 7 + B + 8 + C + 9 + D + 10 +
18		E + 1 + F + 2 + G + 3
19}
20
21func bar() int8 {
22	var (
23		W int16
24		X int32
25		Y int32
26		Z int32
27	)
28	return int8(W+int16(X+3)+3) * int8(Y+3+Z*3)
29}
30
31func main() {
32	if foo() == 0 {
33		panic("foo")
34	}
35	if bar() == 0 {
36		panic("bar")
37	}
38}
39