| /* { dg-do compile } */ |
| /* { dg-csky-options "-mcpu=ck801 -O1 -fno-reorder-blocks" } */ |
| |
| /* Test branch generation on CK801, which cannot rely on assembler |
| branch relaxation because long branches clobber lr. */ |
| |
| #define nop8 asm ("nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop") |
| #define nop64 nop8; nop8; nop8; nop8; nop8; nop8; nop8; nop8 |
| #define nop512 nop64; nop64; nop64; nop64; nop64; nop64; nop64; nop64 |
| #define nop4k nop512; nop512; nop512; nop512; nop512; nop512; nop512; nop512 |
| #define nop32k nop4k; nop4k; nop4k; nop4k; nop4k; nop4k; nop4k; nop4k |
| |
| extern void g (int); |
| int f (int x, int y, int z) |
| { |
| if (x == 0) // cmpnei; jbt |
| { |
| nop64; |
| x = y; |
| } |
| if (y == 0) // cmpnei; jbf; jbr |
| { |
| nop512; |
| y = z; |
| } |
| if (z == 0) // cmpnei; jbf; bsr |
| { |
| nop32k; |
| z = x; |
| } |
| return x + y + z; |
| } |
| |
| /* { dg-final { scan-assembler "push.*lr" } } */ |
| /* { dg-final { scan-assembler "pop.*lr" } } */ |
| /* { dg-final { scan-assembler-times "cmpnei" 3 } } */ |
| /* { dg-final { scan-assembler-times "jbt" 1 } } */ |
| /* { dg-final { scan-assembler-times "jbf" 2 } } */ |
| /* { dg-final { scan-assembler-times "jbr" 1 } } */ |
| /* { dg-final { scan-assembler-times "bsr" 1 } } */ |
