Re: [llvm-commits] [llvm] r47204 - in /llvm/trunk: docs/ include/llvm/ include/llvm/CodeGen/ lib/CodeGen/SelectionDAG/ lib/Target/ lib/Target/Alpha/ lib/Target/X86/ test/CodeGen/Alpha/ test/CodeGen/X86/

[Duncan Sands]

Hi Andrew,

> +handling llvm.memory.barrier on pre SSE2 cpus
> +
> +should generate:
> +lock ; mov %esp, %esp

the linux kernel uses

lock; addl $0,0(%esp)

I don't know which is better (if any).

Ciao,

Duncan.
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