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Re: Instruction bundling on IA64 and the Intel Assembler
- From: kenner at vlsi1 dot ultra dot nyu dot edu (Richard Kenner)
- To: zack at codesourcery dot com
- Cc: gcc at gcc dot gnu dot org
- Date: Mon, 15 Dec 03 17:22:39 EST
- Subject: Re: Instruction bundling on IA64 and the Intel Assembler
NOPs have to be considered when determining bundle boundaries, so I think
that the naive three-insns-farther approach will be correct.
Sure, but that's not what I meant. What I meant is that you can't simply
look three insns ahead when the bundle start insn is emitted because the
nops haven't yet been emitted. So you have to know where to look forward
and that requires *some* knowlege of the function in question.