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Re: [PATCH] Pass -mtune and -march options to assembler.


Mark Mitchell <mark@codesourcery.com> wrote:
It may also be valuable to do optimization in the
assembler for the benefit of hand-written assembly code.

IMHO, especialy for hand-written assembly code all optimizations by assembler must be excluded. Because program's optimization can destroy human's optimizations/
Certainly, everything that can be done in the compiler with reasonable effort should be done there.

I agree. But what to do whis opcode/address-dependable optimizations?
What to do whis Intel's recomentdation: "Ensure instructions using 0xF7 opcode byte does not start at offset 14 of a fetch line..."


Vladimir Volynsky
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