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 10 package main 11 12 var 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 14 func 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 21 func 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 31 func main() { 32 if foo() == 0 { 33 panic("foo") 34 } 35 if bar() == 0 { 36 panic("bar") 37 } 38 } 39
