On Tuesday 22 November 2005 13:17, Benjamin Kosnik wrote:
> What about compile-time performance?
>
Well, it's hard to say, I have not really used LLVM extensively. The only
real data I have is compile times for SPECint:
SPECint build times (secs)
-O2 -O3
GCC 4.1.0 (20051117) 354 398
LLVM 1.6 (-Wl,-native-cbe) 802 805
So there appears to be a factor of 2 slowdown in LLVM. However, I know
LLVM has a separate GCC invokation. It seems as if it emitted C code that
is then compiled with GCC (I'm using -Wl,-native-cbe).
I don't think this would be standard procedure in an integrated LLVM.
Chris, how would one compare compile times? Not using -Wl,-native-cbe
implies emitting bytecode, right?
