Re: issue with clang and CPUTYPE native
On Thu Dec 30 10, Roman Divacky wrote: On Thu, Dec 30, 2010 at 12:20:33AM +, Alexander Best wrote: On Tue Dec 28 10, Roman Divacky wrote: -march=native in clang works by detecting CPU name and passing it (if found) to llvm. if the CPU is not detected nothing is passed. nocona is supported ie. leaving the CPUNAME empty or specifying it to nocona should be equivalent to setting it to native. can you apply this patch: Index: Driver/Tools.cpp === --- Driver/Tools.cpp (revision 122591) +++ Driver/Tools.cpp (working copy) @@ -684,6 +684,7 @@ // FIXME: We should also incorporate the detected target features for use // with -native. std::string CPU = llvm::sys::getHostCPUName(); + llvm::outs() detected CPU = CPU \n; if (!CPU.empty()) CPUName = Args.MakeArgString(CPU); } else thanks a lot for the patch. i've applied it, but am not sure how to only compile clang. 'make' in usr.bin/clang fails. do i have to run target buildworld or is there a way to only build clang? I would guess that cd lib/clang make cd ../../usr.bin/clang make should work, if not - full buildworld is necessary I guess thanks. that worked. this is what clang detects as my cpu: -march=native this the dmesg output: CPU: Intel(R) Pentium(R) Dual CPU E2160 @ 1.80GHz (2394.05-MHz K8-class CPU) Origin = GenuineIntel Id = 0x6fd Family = 6 Model = f Stepping = 13 Features=0xbfebfbffFPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE Features2=0xe39dSSE3,DTES64,MON,DS_CPL,EST,TM2,SSSE3,CX16,xTPR,PDCM AMD Features=0x20100800SYSCALL,NX,LM AMD Features2=0x1LAHF TSC: P-state invariant cheers. alex -- a13x ___ freebsd-toolchain@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to freebsd-toolchain-unsubscr...@freebsd.org
Re: issue with clang and CPUTYPE native
On Thu Dec 30 10, Roman Divacky wrote: On Thu, Dec 30, 2010 at 06:40:48PM +, Alexander Best wrote: On Thu Dec 30 10, Roman Divacky wrote: On Thu, Dec 30, 2010 at 12:20:33AM +, Alexander Best wrote: On Tue Dec 28 10, Roman Divacky wrote: -march=native in clang works by detecting CPU name and passing it (if found) to llvm. if the CPU is not detected nothing is passed. nocona is supported ie. leaving the CPUNAME empty or specifying it to nocona should be equivalent to setting it to native. can you apply this patch: Index: Driver/Tools.cpp === --- Driver/Tools.cpp (revision 122591) +++ Driver/Tools.cpp (working copy) @@ -684,6 +684,7 @@ // FIXME: We should also incorporate the detected target features for use // with -native. std::string CPU = llvm::sys::getHostCPUName(); + llvm::outs() detected CPU = CPU \n; if (!CPU.empty()) CPUName = Args.MakeArgString(CPU); } else thanks a lot for the patch. i've applied it, but am not sure how to only compile clang. 'make' in usr.bin/clang fails. do i have to run target buildworld or is there a way to only build clang? I would guess that cd lib/clang make cd ../../usr.bin/clang make should work, if not - full buildworld is necessary I guess thanks. that worked. this is what clang detects as my cpu: -march=native hm? are you sure it wrote -march=native? it should have written oh sorry. i copypasted the wrong line. :( detected CPU = core2 detected CPU = something -- a13x ___ freebsd-toolchain@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to freebsd-toolchain-unsubscr...@freebsd.org
Re: issue with clang and CPUTYPE native
On Thu, Dec 30, 2010 at 06:46:16PM +, Alexander Best wrote: On Thu Dec 30 10, Roman Divacky wrote: On Thu, Dec 30, 2010 at 06:40:48PM +, Alexander Best wrote: On Thu Dec 30 10, Roman Divacky wrote: On Thu, Dec 30, 2010 at 12:20:33AM +, Alexander Best wrote: On Tue Dec 28 10, Roman Divacky wrote: -march=native in clang works by detecting CPU name and passing it (if found) to llvm. if the CPU is not detected nothing is passed. nocona is supported ie. leaving the CPUNAME empty or specifying it to nocona should be equivalent to setting it to native. can you apply this patch: Index: Driver/Tools.cpp === --- Driver/Tools.cpp(revision 122591) +++ Driver/Tools.cpp(working copy) @@ -684,6 +684,7 @@ // FIXME: We should also incorporate the detected target features for use // with -native. std::string CPU = llvm::sys::getHostCPUName(); + llvm::outs() detected CPU = CPU \n; if (!CPU.empty()) CPUName = Args.MakeArgString(CPU); } else thanks a lot for the patch. i've applied it, but am not sure how to only compile clang. 'make' in usr.bin/clang fails. do i have to run target buildworld or is there a way to only build clang? I would guess that cd lib/clang make cd ../../usr.bin/clang make should work, if not - full buildworld is necessary I guess thanks. that worked. this is what clang detects as my cpu: -march=native hm? are you sure it wrote -march=native? it should have written oh sorry. i copypasted the wrong line. :( detected CPU = core2 yes, you have core2, maybe thats why using CPU=nocona is causing you problems? ___ freebsd-toolchain@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to freebsd-toolchain-unsubscr...@freebsd.org
Re: issue with clang and CPUTYPE native
On Thu Dec 30 10, Roman Divacky wrote: On Thu, Dec 30, 2010 at 06:46:16PM +, Alexander Best wrote: On Thu Dec 30 10, Roman Divacky wrote: On Thu, Dec 30, 2010 at 06:40:48PM +, Alexander Best wrote: On Thu Dec 30 10, Roman Divacky wrote: On Thu, Dec 30, 2010 at 12:20:33AM +, Alexander Best wrote: On Tue Dec 28 10, Roman Divacky wrote: -march=native in clang works by detecting CPU name and passing it (if found) to llvm. if the CPU is not detected nothing is passed. nocona is supported ie. leaving the CPUNAME empty or specifying it to nocona should be equivalent to setting it to native. can you apply this patch: Index: Driver/Tools.cpp === --- Driver/Tools.cpp (revision 122591) +++ Driver/Tools.cpp (working copy) @@ -684,6 +684,7 @@ // FIXME: We should also incorporate the detected target features for use // with -native. std::string CPU = llvm::sys::getHostCPUName(); + llvm::outs() detected CPU = CPU \n; if (!CPU.empty()) CPUName = Args.MakeArgString(CPU); } else thanks a lot for the patch. i've applied it, but am not sure how to only compile clang. 'make' in usr.bin/clang fails. do i have to run target buildworld or is there a way to only build clang? I would guess that cd lib/clang make cd ../../usr.bin/clang make should work, if not - full buildworld is necessary I guess thanks. that worked. this is what clang detects as my cpu: -march=native hm? are you sure it wrote -march=native? it should have written oh sorry. i copypasted the wrong line. :( detected CPU = core2 yes, you have core2, maybe thats why using CPU=nocona is causing you problems? CPU=nocona *isn't* causing problems. CPU=native is causing the problems. core2 is wrong imo. have a look at share/mk/bsd.cpu.mk for amd64. it sets core2 to nocona. so clang should detect nocona for CPU=native and *not* core2. however i'll try to run buildworld again with the patched clang to completely pinpoint the problem. cheers. alex -- a13x ___ freebsd-toolchain@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to freebsd-toolchain-unsubscr...@freebsd.org
