1 // run 2 3 // Test for 8g register move bug. The optimizer gets confused 4 // about 16- vs 32-bit moves during splitContractIndex. 5 6 // Issue 3910. 7 8 package main 9 10 func main() { 11 const c = 0x12345678 12 index, n, offset := splitContractIndex(c) 13 if index != int((c&0xffff)>>5) || n != int(c&(1<<5-1)) || offset != (c>>16)&(1<<14-1) { 14 println("BUG", index, n, offset) 15 } 16 } 17 18 func splitContractIndex(ce uint32) (index, n, offset int) { 19 h := uint16(ce) 20 return int(h >> 5), int(h & (1<<5 - 1)), int(ce>>16) & (1<<14 - 1) 21 } 22
