Part Number: RM57L843
Other Parts Discussed in Thread: AM6548
Dear TI team,
I would like to report a strange compiler behavior. I am using TI Arm Clang Compiler 5.1.0.LTS. The following warning is displayed despite the usage of the attribute `interrupt_save_fp`:
warning: interrupt service routine with vfp enabled may clobber the interruptee's vfp
state; consider using the `interrupt_save_fp` attribute to prevent this behavior [-Warm-interrupt-vfp-clobber]
The warning is very easy to reproduce. Copy the following code in a .c file (e.g arm-interrupt-vfp-clobber.c):
int __attribute__( ( target( "arm" ), interrupt( "SWI" ) ) ) __attribute__( ( interrupt_save_fp ) ) handler( void )
{
return 0;
}
Then run the following compile command:
tiarmclang -mthumb -mcpu=cortex-r5 -o arm-interrupt-vfp-clobber.o -c arm-interrupt-vfp-clobber.c
Could you tell me how to resolve this warning please (other than disabling it with -Wno-arm-interrupt-vfp-clobber)?
Best regards,
Vincent
