| /* { dg-do compile } */ | |
| /* { dg-options "-O2 -mcpu=51qe -fdisable-ipa-pure-const -fdump-rtl-pro_and_epilogue" } */ | |
| /* { dg-final { scan-rtl-dump-times "unspec_volatile" 1 "pro_and_epilogue"} } */ | |
| char F(short *ty); | |
| short V(char cmd) | |
| { | |
| static short st256; | |
| static short stc; | |
| short sc; | |
| short scd; | |
| short d; | |
| F(&sc); | |
| if (cmd == 4) | |
| { | |
| st256 = 0; | |
| d = 0; | |
| } | |
| else | |
| { | |
| scd = sc - stc; | |
| if (scd < -128) | |
| { | |
| scd += 256; | |
| } | |
| d = st256 >> 8; | |
| st256 -= d << 8; | |
| } | |
| stc = sc; | |
| return d; | |
| } | |