| /* Wrong method to get number of arg reg will cause argument corruption. */ |
| /* { dg-do run } */ |
| /* { dg-skip-if "incompatible options" { ! { arm_thumb1_ok || arm_thumb2_ok } } } */ |
| /* { dg-require-effective-target arm_eabi } */ |
| /* { dg-options "-mthumb -O1" } */ |
| |
| extern void abort (void); |
| |
| int foo (int, int, int, int) __attribute__((noinline)); |
| |
| int |
| foo (int a, int b, int c, int d) |
| { |
| register int m asm ("r8"); |
| |
| m = a; |
| m += b; |
| m += c; |
| m += d; |
| |
| asm ("" : "=r" (m) : "0" (m)); |
| |
| return m; |
| } |
| |
| int |
| main () |
| { |
| volatile int a = 10; |
| volatile int b = 20; |
| volatile int c = 30; |
| volatile int d = 40; |
| volatile int sum = 0; |
| |
| sum = foo (a, b, c, d); |
| |
| if (sum != 100) |
| abort (); |
| |
| return 0; |
| } |