[dpdk-dev] [PATCH] librte_eal: Fix wrong header file for old gcc version

[Qiu, Michael]

On 2015/9/7 22:46, Thomas Monjalon wrote:
> 2015-08-24 17:22, Michael Qiu:
>> For __SSE3__, the corresponding header file should be pmmintrin.h,
>> tmmintrin.h works for __SSSE3__.
> Please could you better explain the difference and what is exactly the bug
> being fixed?
It should solve this issue:

[dpdk-dev] DPDK 2.1.0 build error: inlining failed in call to always_inline

/usr/lib/gcc/x86_64-redhat-linux/4.9.2/include/tmmintrin.h:185:1: error: inlining failed in call to always_inline ‘_mm_alignr_epi8’: t
arget specific option mismatch
 _mm_alignr_epi8(__m128i __X, __m128i __Y, const int __N)

 ^
The AMD cpu flags:

flags        : 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 mmxe
xt fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni monitor cx16 popcnt lah
f_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt cpb hw_pstate npt lbrv svm_lock nrip_sa


"_mm_alignr_epi8" only works for ssse3 or upper,
but this AMD CPU does not support that. This function has been wrongly called, because the wrong header file.

Thanks,
Michael 


> Thanks
>
>