diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/pragma-isr-nosave_low_regs.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/pragma-isr-nosave_low_regs.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pragma-isr-nosave_low_regs.c b/gcc/testsuite/gcc.dg/pragma-isr-nosave_low_regs.c new file mode 100644 index 000000000..c71c88cb7 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pragma-isr-nosave_low_regs.c @@ -0,0 +1,20 @@ +/* { dg-do compile { target { { sh-*-* sh[1234ble]*-*-* } && nonpic } } } */ +/* { dg-options "-O" } */ +extern void foo (); +#pragma interrupt +#pragma nosave_low_regs +void +isr() +{ + foo (); +} + +/* { dg-final { scan-assembler-times "rte" 1} } */ +/* A call will clobber all call-saved registers, but because of + #pragma nosave_low_regs, r0..r7 need not be saved/restored. + One of these registers will also do fine to hold the function address. + Call-saved registers r8..r13 also don't need to be restored. */ +/* { dg-final { scan-assembler-not "\[^f\]r\[0-9\]\[ \t\]*," } } */ +/* { dg-final { scan-assembler-not "\[^f\]r\[89\]" } } */ +/* { dg-final { scan-assembler-not "\[^f\]r1\[,0-3\]" } } */ +/* { dg-final { scan-assembler-times "macl" 2} } */ |