Andrew Pinski - Re: Link-time optimzation (original) (raw)

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• From: Andrew Pinski
• To: mark at codesourcery dot com (Mark Mitchell)
• Cc: gcc at gcc dot gnu dot org (gcc mailing list)
• Date: Wed, 16 Nov 2005 19:00:42 -0500 (EST)
• Subject: Re: Link-time optimzation

The GCC community has talked about link-time optimization for some time. In addition to results with other compilers, Geoff Keating's work on inter-module optimization has demonstrated the potential for improved code-generation from applying optimizations across translation units.

I don't understand why all the Linker section cannot just be done from collect2 and let the linker not know anything at all.

That seems like the best way of implementing it. Unless you want to integrate binutils inside GCC which might be the best goal anyways if we also want to include MS style inline asm.

Also I see there is no mention of LLVM at all in the design, I would have thought that it should be mentioned why you did not choose that bytecode format and why make another one.

-- Pinski

• References:
  • Link-time optimzation
    * From: Mark Mitchell