diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/arm/thumb-find-work-register.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/arm/thumb-find-work-register.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/arm/thumb-find-work-register.c b/gcc-4.9/gcc/testsuite/gcc.target/arm/thumb-find-work-register.c new file mode 100644 index 000000000..f2c0225a4 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.target/arm/thumb-find-work-register.c @@ -0,0 +1,40 @@ +/* Wrong method to get number of arg reg will cause argument corruption. */ +/* { dg-do run } */ +/* { 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; +} |