[MacPorts] #51642: GCC does not honor -march=native

[MacPorts]

#51642: GCC does not honor -march=native
------------------------+--------------------------------
 Reporter:  noloader@…  |      Owner:  macports-tickets@…
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.3.4
 Keywords:              |       Port:
------------------------+--------------------------------
 I'm attempting a compile uder MacPort's GCC compiler:

 {{{
 $ make CXX=/opt/local//bin/x86_64-apple-darwin12-gcc-4.9.3
 /opt/local//bin/x86_64-apple-darwin12-gcc-4.9.3 -DNDEBUG -g2 -O2 -fPIC
 -march=native -pipe -c cryptlib.cpp
 :1057:no such instruction: `vzeroupper'
 :1507:no such instruction: `vzeroupper'
 :1517:no such instruction: `vzeroupper'
 :1662:no such instruction: `vzeroupper'
 :1838:no such instruction: `vzeroupper'
 ...
 }}}

 Piping it into `wc` reveals:

 {{{
 $ make CXX=/opt/local//bin/x86_64-apple-darwin12-gcc-4.9.3 2>&1 | wc -l
      190
 }}}

 The machine is a 2012 MacBook Pro with a Core i7-2760QM. Broadly speaking,
 the cpu includes SSE4 and AES-NI, but lacks RDRAND and RDSEED:

 {{{
 $ sysctl -a | grep machdep.cpu.features
 machdep.cpu.features: FPU VME DE PSE TSC MSR PAE MCE CX8 APIC SEP MTRR PGE
 MCA CMOV PAT PSE36 CLFSH DS ACPI MMX FXSR SSE SSE2 SS HTT TM PBE SSE3
 PCLMULQDQ DTES64 MON DSCPL VMX SMX EST TM2 SSSE3 CX16 TPR PDCM SSE4.1
 SSE4.2 x2APIC POPCNT AES PCID XSAVE OSXSAVE TSCTMR AVX1.0
 }}}


 `vzeroupper` is part of AVX, and AVX is available in the cpu feature set.

 We have users who use a few MacPorts compilers, so I'm guessing additional
 testing will reveal the same issue under GCC 5.1 and 5.3. I'm only going
 to file this one report, however.

 -----

 Here's some additional information that may be useful.

 {{{
 $  port version
 Version: 2.3.4
 }}}

 And:

 {{{
 $ sysctl -a | grep machdep.cpu
 machdep.cpu.max_basic: 13
 machdep.cpu.max_ext: 2147483656
 machdep.cpu.vendor: GenuineIntel
 machdep.cpu.brand_string: Intel(R) Core(TM) i7-2760QM CPU @ 2.40GHz
 machdep.cpu.family: 6
 machdep.cpu.model: 42
 machdep.cpu.extmodel: 2
 machdep.cpu.extfamily: 0
 machdep.cpu.stepping: 7
 machdep.cpu.feature_bits: 3219913727 532341759
 machdep.cpu.extfeature_bits: 672139520 1
 machdep.cpu.signature: 132775
 machdep.cpu.brand: 0
 machdep.cpu.features: FPU VME DE PSE TSC MSR PAE MCE CX8 APIC SEP MTRR PGE
 MCA CMOV PAT PSE36 CLFSH DS ACPI MMX FXSR SSE SSE2 SS HTT TM PBE SSE3
 PCLMULQDQ DTES64 MON DSCPL VMX SMX EST TM2 SSSE3 CX16 TPR PDCM SSE4.1
 SSE4.2 x2APIC POPCNT AES PCID XSAVE OSXSAVE TSCTMR AVX1.0
 machdep.cpu.extfeatures: SYSCALL XD EM64T LAHF RDTSCP TSCI
 machdep.cpu.logical_per_package: 16
 machdep.cpu.cores_per_package: 8
 machdep.cpu.microcode_version: 26
 machdep.cpu.processor_flag: 4
 machdep.cpu.mwait.linesize_min: 64
 machdep.cpu.mwait.linesize_max: 64
 machdep.cpu.mwait.extensions: 3
 machdep.cpu.mwait.sub_Cstates: 135456
 machdep.cpu.thermal.sensor: 1
 machdep.cpu.thermal.dynamic_acceleration: 1
 machdep.cpu.thermal.invariant_APIC_timer: 1
 machdep.cpu.thermal.thresholds: 2
 machdep.cpu.thermal.ACNT_MCNT: 1
 machdep.cpu.thermal.core_power_limits: 1
 machdep.cpu.thermal.fine_grain_clock_mod: 1
 machdep.cpu.thermal.package_thermal_intr: 1
 machdep.cpu.thermal.hardware_feedback: 0
 machdep.cpu.thermal.energy_policy: 0
 machdep.cpu.xsave.extended_state: 7 832 832 0
 machdep.cpu.arch_perf.version: 3
 machdep.cpu.arch_perf.number: 4
 machdep.cpu.arch_perf.width: 48
 machdep.cpu.arch_perf.events_number: 7
 machdep.cpu.arch_perf.events: 0
 machdep.cpu.arch_perf.fixed_number: 3
 machdep.cpu.arch_perf.fixed_width: 48
 machdep.cpu.cache.linesize: 64
 machdep.cpu.cache.L2_associativity: 8
 machdep.cpu.cache.size: 256
 machdep.cpu.tlb.inst.small: 64
 machdep.cpu.tlb.inst.large: 8
 machdep.cpu.tlb.data.small: 64
 machdep.cpu.tlb.data.large: 32
 machdep.cpu.tlb.shared: 512
 machdep.cpu.address_bits.physical: 36
 machdep.cpu.address_bits.virtual: 48
 machdep.cpu.core_count: 4
 machdep.cpu.thread_count: 8
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/51642>
MacPorts <https://www.macports.org/>
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