How to add target specific dependency?

Hi all .. I'm currently porting GCC into a new processor, and I have a problem in instruction scheduling ... The case is like this: In the machine description (*.md) file, sometimes I emit a single RTL instruction into multiple ASM instruction. The problem is, in some case I need to emit an oper

Re: How to activate instruction scheduling in GCC?

Sorry, no need already to bother with the last question, already knew that it is (again) generated automatically from the Machine description file petruk_gile wrote: > > Thanks .. your reply is really helpful ... > > Btw, I checked the MIPS backend at MIPS.c, but I ca

Re: How to activate instruction scheduling in GCC?

Thanks .. your reply is really helpful ... Btw, I checked the MIPS backend at MIPS.c, but I can't find the definition of some functions such as: get_attr_hazard(), gen_hazard_nop (), etc. Anyone know where those functions defined? Ian Lance Taylor-3 wrote: > > petruk_g

How to activate instruction scheduling in GCC?

Hi ALL I'm a pure beginner in GCC, and currently working on a project to implement instruction scheduling for a new DSP processor. This processor doesn't have pipeline interlock, so the compiler HAVE to schedule the instruction without relying on hardware help anymore The problem is, I'm a