llvm dev - Dec 2010 - [LLVMdev] Disable all inlining in llvm-gcc/llvm-g++

Hi,

I'd like to disable all inlining in llvm-gcc/llvm-g++.  From the FAQ
on llvm.org, I see:

"Passing "-Wa,-disable-opt -Wl,-disable-opt" will disable *all*
cleanup and optimizations done at the llvm level, leaving you with the
truly horrible code that you desire."

But from a cursory glance at llvm-backend.cpp I don't immediately see
that everything has been disabled by usage of this flag.  It looks
like one must pass either "-O0" or "-mllvm
-disable-llvm-optzns" to
turn off all inlining. I admit that I didn't look at this file as
carefully as I could have.

A related question: does llvm-gcc obey the gcc optimization flags?
Specifically, does it obey -fno-inline?

Thanks for your time and attention,
Nathan McCauley

Hi Nathan,
> I'd like to disable all inlining in llvm-gcc/llvm-g++.  From the FAQ
> on llvm.org, I see:
do this the same way you would with gcc, aka -fno-inline.

Ciao, Duncan.
>
> "Passing "-Wa,-disable-opt -Wl,-disable-opt" will disable
*all*
> cleanup and optimizations done at the llvm level, leaving you with the
> truly horrible code that you desire."
>
> But from a cursory glance at llvm-backend.cpp I don't immediately see
> that everything has been disabled by usage of this flag.  It looks
> like one must pass either "-O0" or "-mllvm
-disable-llvm-optzns" to
> turn off all inlining. I admit that I didn't look at this file as
> carefully as I could have.
>
> A related question: does llvm-gcc obey the gcc optimization flags?
> Specifically, does it obey -fno-inline?
>
> Thanks for your time and attention,
> Nathan McCauley
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev