"-dP" option does not output RTL & assembly code?

[James Greenhalgh]

On Thu, Nov 03, 2016 at 04:51:05PM +0800, Jun Koi wrote:
> hi,
> 
> i am using GCC v5.4 on Ubuntu 16.04, x86-64 edition.
> 
> i run "gcc -dp -dP helloworld.c", and expect to get RTL with assembler
> output as comment between instructions. to my surprise, there is no
> new dump file created, even though the program is successfully
> compiled.
> 
> my question: why "-dp -dP" does not work? what do i need to do to have
> them work as expected?

I'd think that the option is working as expected, but you are not keeping
the assembly files, so you never see the comment.

Try adding -save-temps or stopping the driver after compilation by using -S.

Thanks,
James