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
8package main
9
10func 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
18func 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