[LLVMdev] speed and code size issues
Cédric Venet
cedric.venet at laposte.net
Sat Jul 18 03:10:33 PDT 2009
> No -g/debug info, as below with additional -D defines.
>
> -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized -Wno-format
> -fno-builtin -fno-zero-initialized-in-bss -mno-mmx -mno-sse -mno-sse2 -mno-sse3
> -O2 -pipe -nostdinc
>
I suppose that a kernel don't use much floating point instructions, but
I was under the impression that the x87 backend (ie x86 without
sse/sse2) of llvm was not very good, at least, not up to par with the rest.
regards,
Cédric
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