search for: popcnt

I'm having a problem with the code generated for the popcnt intrinsic on MacOSX. The `llc` program will generate the assembly just fine, but the assembler fails with the error: suffix or operands invalid for `popcnt' The problem is that the mac assembler does not support length suffixes on the popcnt instruction (e.g. {w,l,q} suffixes). GCC handles...

Hi, On Sat, Oct 22, 2011 at 12:03 PM, David Peixotto <dmp at rice.edu> wrote: > I'm having a problem with the code generated for the popcnt intrinsic on MacOSX. The `llc` program will generate the assembly just fine, but the assembler fails with the error: > >   suffix or operands invalid for `popcnt' > > The problem is that the mac assembler does not support length suffixes on the popcnt instruction (e.g. {w,l,q} suffi...

I am new to the LLVM backends, I am wondering how instruction selection is done in LLVM backends, I looked at the .td files in Target/X86, they all seem to be small and do not deal with common X86 instructions, i.e. mov, push, pop, etc. Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL:

...e: > My CPU flags inside the crashing guest look like this: > > fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush > mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb lm rep_good nopl > extd_apicid pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic popcnt aes xsave > avx f16c hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse > 3dnowprefetch osvw xop fma4 tbm arat npt nrip_save tsc_adjust bmi1 > > whereas in a (working) -cpu qemu64 guest, they look like this: > > fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mc...

...e: > My CPU flags inside the crashing guest look like this: > > fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush > mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb lm rep_good nopl > extd_apicid pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic popcnt aes xsave > avx f16c hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse > 3dnowprefetch osvw xop fma4 tbm arat npt nrip_save tsc_adjust bmi1 > > whereas in a (working) -cpu qemu64 guest, they look like this: > > fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mc...

...ed to remove cgroup for one-8 - On XCP hypervisor: [root at xenserver2 ~]# egrep '(vmx|svm)' --color=always /proc/cpuinfo flags: fpu de tsc msr pae mce cx8 apic sep mtrr mca cmov pat clflush acpi mmx fxsr sse sse2 ss ht nx constant_tsc nonstop_tsc aperfmperf pni vmx est ssse3 sse4_1 sse4_2 popcnt hypervisor arat tpr_shadow vnmi flexpriority ept vpid flags: fpu de tsc msr pae mce cx8 apic sep mtrr mca cmov pat clflush acpi mmx fxsr sse sse2 ss ht nx constant_tsc nonstop_tsc aperfmperf pni vmx est ssse3 sse4_1 sse4_2 popcnt hypervisor arat tpr_shadow vnmi flexpriority ept vpid flags: fpu de t...

...mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid And this is what I get in the guest: model name : Intel Xeon E312xx (Sandy Bridge) flags : fpu vme de pse tsc m...

...e q35 makes no difference.) My CPU flags inside the crashing guest look like this: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb lm rep_good nopl extd_apicid pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic popcnt aes xsave avx f16c hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw xop fma4 tbm arat npt nrip_save tsc_adjust bmi1 whereas in a (working) -cpu qemu64 guest, they look like this: fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx f...

...e q35 makes no difference.) My CPU flags inside the crashing guest look like this: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb lm rep_good nopl extd_apicid pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic popcnt aes xsave avx f16c hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw xop fma4 tbm arat npt nrip_save tsc_adjust bmi1 whereas in a (working) -cpu qemu64 guest, they look like this: fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx f...

...pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm bogomips : 6795.58 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtua...

...bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 11 wp : yes flags : fpu de tsc msr pae cx8 cmov pat clflush mmx fxsr sse sse2 ss ht nx constant_tsc nonstop_tsc pni ssse3 sse4_1 sse4_2 popcnt hypervisor bogomips : 4533.49 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 26 model name : Intel(R) Xeon(R) CPU L5520 @...

...; pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb > rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology > nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx > est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt > tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb > xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase > tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm > bogomips : 6795.91 > clflush size : 64 > cache_alignment : 64 > address sizes...

...c sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse...

...096 KB fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx rdtscp lm constant_tsc rep_good nopl eagerfpu pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx hypervisor lahf_lm xsaveopt bogomips : 4105.33 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: <capabilities> <host> <uuid>95c4e625-3383-4ec1-9ee4-c47a87d93b97</uuid&...

> -------- Original message -------- > Subject: Re: [libvirt-users] Can I configure cores instead of CPU's > From: Todd And Margo Chester <toddandmargo at gmail.com> > To: "libvirt-users at redhat.com" <libvirt-users at redhat.com> > CC: > > > Hi All, > > Scientific Linux 6.1 x64 > qemu-kvm-0.12.1.2-2.160.el6_1.2.x86_64 > > My XP-Pro

...pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid I've just managed to install the libvirt-bin:amd64 package on the same machine, on the wheezy-i386 distribution. The output of 'virsh capabilities' is now reported correct...

...pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 3600.10 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: ... </proc/cpuinfo for processors 1..31 snip...

...: 3192.778 cache size : 8192 KB fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu de tsc msr pae mce cx8 apic sep mtrr mca cmov pat clflush acpi mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good nonstop_tsc aperfmperf pni pclmulqdq est ssse3 cx16 sse4_1 sse4_2 x2apic popcnt hypervisor lahf_lm ida arat bogomips : 6385.55 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Xeon(R) CPU E31230 @ 3.20GHz stepping : 7 cpu MHz : 319...

...;>> nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl >>>>>> xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor >>>>>> ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 >>>>>> x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat xsaveopt >>>>>> pln pts dtherm tpr_shadow vnmi flexpriority ept vpid >>>>>> >>>>>> I've just managed to install the libvirt-bin:amd64 package on the same >>>>>> machine, on...

...apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb xsaveopt pln pts dtherm hwp hwp_noitfy hwp_act_window hwp_epp tpr_shadow vnmi flexpriority ept vpid fsgsbase bmi1 hle avx2 smep bmi2 erms invpcid rtm rdseed adx bogomips : 6816.05 clflush size : 64 cache_alignment :...