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Re: Some benchmark comparison of gcc4.5 and dragonegg (was dragonegg in FSF gcc?)
On Apr 21, 2010, at 9:53 AM, Vladimir Makarov wrote:
> Only SPECIn2000 for x86_64 has been compiled fully successfully by
> dragonegg. There were a few compiler crashes including some in LLVM
> itself for SPECFP2000 and for SPECINT2000 for x86.
>
> So here is SPECInt2000 for x86_64 comparison:
>
> dragonegg: -O3 (with LLVM release build)
> gcc4.5: -O3 -flto (--enable-checking=release)
>
> Compilation Time SPECINT2000
> Dragonegg 122.85user 2572
> gcc-4.5 283.49user 2841
>
> On integer benchmarks, dragonegg generates about 11% slower code.
> One interesting thing is that dragonegg is a really fast compiler. It
> is 2.3 times faster than gcc.
This is definitely interesting, but you're also comparing apples and oranges here (for both compile time and performance). Can you get numbers showing GCC -O3 and dragonegg with LTO to get a better comparison?
-Chris