---------- Forwarded message ---------- Date: Wed, 16 Nov 2011 12:30:35 +0200 (EET) From: Vladimir Kushnir <vkush...@bigmir.net> To: hack...@freebsd.org Subject: Base compiler and amdfam10 - anybody/anything?
Hi,Are there any attempts to bring to -CURRENT newer AMD chips support? Personally, I've just tried to apply the patches from openSUSE's gcc-4.2.1 SRPM. With slight adaptation they've applied and gave rather significant boost in resulting code speed. At least, testfcpy by Alexander Konovalenko (http://daemon.safety.sci.kth.se/~kono/testfcpu) gave me ~20% (!) speedup with -march=amdfam10 compared to our -march=athlon64-sse3 on Phenom II 970. Unfortunately, the patched compiler with -march=amdfam10 fails in buildworld ("internal compiler error"'s while compiling clang). The buildworld was successful with patched compiler and -march=athlon64-sse3 but since this is my main working system... Well, I had to come back to our unpatched compiler :-( If anyone is interested, the patches were taken from gcc42-4.2.1_20070724-17.src.rpm (actually, I applied all the patches marked as AMD stuff), the resulting patches towards our src/contrib/gcc and share/mk/bsd.cpu.mk are attached (or I can send them by email), and I am quite ready to test what comes out of it.
WBR, Vladimir
gcc-amdfam10.diff.gz
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bsd.cpu.mk.amdfam10.gz
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