Implementation notes: amd64, h8atom, crypto_sign/rainbow3ccyclicc683248

Computer: h8atom
Architecture: amd64
CPU ID: GenuineIntel-00030661-bfebfbff
SUPERCOP version: 20200618
Operation: crypto_sign
Primitive: rainbow3ccyclicc683248

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
189791084	96394 8 0	113974 896 1656	`ssse3`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
190170680	158122 8 0	177939 920 1688	`ssse3`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
190179451	96394 8 0	113974 896 1656	`ssse3`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
191261665	147133 0 0	166784 912 1688	`ref`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
191356193	117484 8 0	136398 896 1656	`ssse3`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
191648709	96791 8 0	114787 920 1688	`ssse3`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
191806111	72690 8 0	88556 888 1656	`ssse3`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
192158526	95123 8 0	113019 920 1688	`ssse3`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
192400215	51104 8 0	68387 912 1656	`ssse3`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
192497823	109907 0 0	126691 880 1656	`amd64`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
192895332	109907 0 0	126691 880 1656	`amd64`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
193121852	109602 0 0	127075 888 1656	`ref`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
193854941	95511 0 0	111667 888 1656	`ref`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
193878440	95511 0 0	111667 888 1656	`ref`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
193964911	122617 0 0	140579 880 1656	`amd64`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
194631332	109865 0 0	127235 888 1656	`ref`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
195575268	122322 0 0	140387 880 1656	`amd64`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
195750898	68582 0 0	84841 872 1656	`amd64`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
196409192	100526 0 0	118304 904 1688	`amd64`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
196506821	105936 0 0	123744 904 1688	`amd64`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
197719564	225482 0 0	244856 904 1688	`amd64`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
204601481	61431 0 0	79304 912 1688	`ref`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
204944341	54126 0 0	70457 880 1656	`ref`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20200618	20200618
205589307	32279 0 0	49576 896 1656	`amd64`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
205989700	60765 0 0	78608 912 1688	`ref`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618
216655355	28921 0 0	46136 904 1656	`ref`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20200618	20200618

Compiler output

Implementation: crypto_sign/rainbow3ccyclicc683248/avx2
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

blas_comm.c: In file included from blas_comm.c:6:
blas_comm.c: In file included from ./blas.h:23:
blas_comm.c: ./blas_avx2.h:88:17: error: always_inline function '_mm256_loadu_si256' requires target feature 'xsave', but would be inlined into function 'gf256v_add_avx2' that is compiled without support for 'xsave'
blas_comm.c: __m256i inp = _mm256_loadu_si256( (__m256i*) (a+i*32) );
blas_comm.c: ^
blas_comm.c: ./blas_avx2.h:89:17: error: always_inline function '_mm256_loadu_si256' requires target feature 'xsave', but would be inlined into function 'gf256v_add_avx2' that is compiled without support for 'xsave'
blas_comm.c: __m256i out = _mm256_loadu_si256( (__m256i*) (accu_b+i*32) );
blas_comm.c: ^
blas_comm.c: ./blas_avx2.h:91:3: error: always_inline function '_mm256_storeu_si256' requires target feature 'xsave', but would be inlined into function 'gf256v_add_avx2' that is compiled without support for 'xsave'
blas_comm.c: _mm256_storeu_si256( (__m256i*) (accu_b+i*32) , out );
blas_comm.c: ^
blas_comm.c: ./blas_avx2.h:170:18: error: always_inline function '_mm256_load_si256' requires target feature 'xsave', but would be inlined into function 'gf256v_madd_avx2' that is compiled without support for 'xsave'
blas_comm.c: __m256i m_tab = _mm256_load_si256( (__m256i*) (__gf256_mul + 32*b) );
blas_comm.c: ^
blas_comm.c: ./blas_avx2.h:171:15: error: '__builtin_ia32_permti256' needs target feature avx2
blas_comm.c: __m256i ml = _mm256_permute2x128_si256( m_tab , m_tab , 0 );
blas_comm.c: ^
blas_comm.c: /usr/lib/llvm-6.0/lib/clang/6.0.0/include/avx2intrin.h:975:12: note: expanded from macro '_mm256_permute2x128_si256'
blas_comm.c: (__m256i)__builtin_ia32_permti256((__m256i)(V1), (__m256i)(V2), (M)); })
blas_comm.c: ^
blas_comm.c: In file included from blas_comm.c:6:
blas_comm.c: In file included from ./blas.h:23:
blas_comm.c: ./blas_avx2.h:172:15: error: '__builtin_ia32_permti256' needs target feature avx2
blas_comm.c: __m256i mh = _mm256_permute2x128_si256( m_tab , m_tab , 0x11 );
blas_comm.c: ^
blas_comm.c: ...

Number of similar (compiler,implementation) pairs: 4, namely:

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2

Compiler output

Implementation: crypto_sign/rainbow3ccyclicc683248/avx2
Compiler: clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

blas_comm.c: In file included from blas_comm.c:6:
blas_comm.c: In file included from ./blas.h:23:
blas_comm.c: ./blas_avx2.h:88:17: error: always_inline function '_mm256_loadu_si256' requires target feature 'sse4.2', but would be inlined into function 'gf256v_add_avx2' that is compiled without support for 'sse4.2'
blas_comm.c: __m256i inp = _mm256_loadu_si256( (__m256i*) (a+i*32) );
blas_comm.c: ^
blas_comm.c: ./blas_avx2.h:89:17: error: always_inline function '_mm256_loadu_si256' requires target feature 'sse4.2', but would be inlined into function 'gf256v_add_avx2' that is compiled without support for 'sse4.2'
blas_comm.c: __m256i out = _mm256_loadu_si256( (__m256i*) (accu_b+i*32) );
blas_comm.c: ^
blas_comm.c: ./blas_avx2.h:91:3: error: always_inline function '_mm256_storeu_si256' requires target feature 'sse4.2', but would be inlined into function 'gf256v_add_avx2' that is compiled without support for 'sse4.2'
blas_comm.c: _mm256_storeu_si256( (__m256i*) (accu_b+i*32) , out );
blas_comm.c: ^
blas_comm.c: ./blas_avx2.h:170:18: error: always_inline function '_mm256_load_si256' requires target feature 'sse4.2', but would be inlined into function 'gf256v_madd_avx2' that is compiled without support for 'sse4.2'
blas_comm.c: __m256i m_tab = _mm256_load_si256( (__m256i*) (__gf256_mul + 32*b) );
blas_comm.c: ^
blas_comm.c: ./blas_avx2.h:171:15: error: '__builtin_ia32_permti256' needs target feature avx2
blas_comm.c: __m256i ml = _mm256_permute2x128_si256( m_tab , m_tab , 0 );
blas_comm.c: ^
blas_comm.c: /usr/lib/llvm-6.0/lib/clang/6.0.0/include/avx2intrin.h:975:12: note: expanded from macro '_mm256_permute2x128_si256'
blas_comm.c: (__m256i)__builtin_ia32_permti256((__m256i)(V1), (__m256i)(V2), (M)); })
blas_comm.c: ^
blas_comm.c: In file included from blas_comm.c:6:
blas_comm.c: In file included from ./blas.h:23:
blas_comm.c: ./blas_avx2.h:172:15: error: '__builtin_ia32_permti256' needs target feature avx2
blas_comm.c: __m256i mh = _mm256_permute2x128_si256( m_tab , m_tab , 0x11 );
blas_comm.c: ^
blas_comm.c: ...

Number of similar (compiler,implementation) pairs: 1, namely:

Compiler	Implementations
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2

Compiler output

Implementation: crypto_sign/rainbow3ccyclicc683248/ssse3
Compiler: clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

blas_comm.c: In file included from blas_comm.c:6:
blas_comm.c: In file included from ./blas.h:23:
blas_comm.c: In file included from ./blas_sse.h:16:
blas_comm.c: ./gf16_sse.h:34:9: error: always_inline function '_mm_shuffle_epi8' requires target feature 'ssse3', but would be inlined into function 'linear_transform_8x8_128b' that is compiled without support for 'ssse3'
blas_comm.c: return _mm_shuffle_epi8(tab_l,v&mask_f)^_mm_shuffle_epi8(tab_h,_mm_srli_epi16(v,4)&mask_f);
blas_comm.c: ^
blas_comm.c: ./gf16_sse.h:34:42: error: always_inline function '_mm_shuffle_epi8' requires target feature 'ssse3', but would be inlined into function 'linear_transform_8x8_128b' that is compiled without support for 'ssse3'
blas_comm.c: return _mm_shuffle_epi8(tab_l,v&mask_f)^_mm_shuffle_epi8(tab_h,_mm_srli_epi16(v,4)&mask_f);
blas_comm.c: ^
blas_comm.c: 2 errors generated.

Number of similar (compiler,implementation) pairs: 1, namely:

Compiler	Implementations
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	ssse3

Compiler output

Implementation: crypto_sign/rainbow3ccyclicc683248/avx2
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE

blas_comm.c: In file included from blas_avx2.h:15:0,
blas_comm.c: from blas.h:23,
blas_comm.c: from blas_comm.c:6:
blas_comm.c: gf16_avx2.h: In function 'linear_transform_8x8_256b':
blas_comm.c: gf16_avx2.h:28:1: warning: AVX vector return without AVX enabled changes the ABI [-Wpsabi]
blas_comm.c: {
blas_comm.c: ^
blas_comm.c: In file included from blas.h:23:0,
blas_comm.c: from blas_comm.c:6:
blas_comm.c: blas_avx2.h: In function 'linearmap_8x8_accu_ymm':
blas_comm.c: blas_avx2.h:63:6: note: The ABI for passing parameters with 32-byte alignment has changed in GCC 4.6
blas_comm.c: void linearmap_8x8_accu_ymm( uint8_t * accu_c , const uint8_t * a , __m256i ml , __m256i mh , __m256i mask , unsigned _num_byte ) {
blas_comm.c: ^~~~~~~~~~~~~~~~~~~~~~
blas_comm.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/7/include/immintrin.h:43:0,
blas_comm.c: from blas_avx2.h:10,
blas_comm.c: from blas.h:23,
blas_comm.c: from blas_comm.c:6:
blas_comm.c: gf16_avx2.h: In function 'linear_transform_8x8_256b':
blas_comm.c: /usr/lib/gcc/x86_64-linux-gnu/7/include/avx2intrin.h:588:1: error: inlining failed in call to always_inline '_mm256_shuffle_epi8': target specific option mismatch
blas_comm.c: _mm256_shuffle_epi8 (__m256i __X, __m256i __Y)
blas_comm.c: ^~~~~~~~~~~~~~~~~~~
blas_comm.c: In file included from blas_avx2.h:15:0,
blas_comm.c: from blas.h:23,
blas_comm.c: from blas_comm.c:6:
blas_comm.c: gf16_avx2.h:29:45: note: called from here
blas_comm.c: ...

Number of similar (compiler,implementation) pairs: 4, namely:

Compiler	Implementations
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	avx2
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	avx2
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	avx2
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	avx2

Namespace violations

Implementation: crypto_sign/rainbow3ccyclicc683248/ssse3
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

blas_comm.o gf16mat_gauss_elim T
blas_comm.o gf16mat_inv T
blas_comm.o gf16mat_mul T
blas_comm.o gf16mat_prod T
blas_comm.o gf16mat_solve_linear_eq T
blas_comm.o gf256mat_gauss_elim T
blas_comm.o gf256mat_inv T
blas_comm.o gf256mat_mul T
blas_comm.o gf256mat_prod T
blas_comm.o gf256mat_solve_linear_eq T
blas_comm.o gf256v_is_zero T
blas_comm.o gf256v_polymul T
blas_comm.o gf256v_set_zero T
blas_comm_sse.o gf16mat_gauss_elim_sse T
blas_comm_sse.o gf16mat_prod_16_sse T
blas_comm_sse.o gf16mat_prod_add_multab_sse T
blas_comm_sse.o gf16mat_prod_multab_sse T
blas_comm_sse.o gf16mat_prod_sse T
blas_comm_sse.o gf16mat_solve_linear_eq_sse T
blas_comm_sse.o gf256mat_gauss_elim_sse T
blas_comm_sse.o gf256mat_prod_add_multab_sse T
blas_comm_sse.o gf256mat_prod_add_sse T
blas_comm_sse.o gf256mat_prod_multab_sse T
blas_comm_sse.o gf256mat_prod_sse T
blas_comm_sse.o gf256mat_solve_linear_eq_sse T
gf16.o __gf16_exp R
gf16.o __gf16_inv R
gf16.o __gf16_log R
gf16.o __gf16_mul D
gf16.o __gf16_mulx2 R
gf16.o __gf16_squ R
gf16.o __gf16_squ_sl4 R
gf16.o __gf16_squ_x8 R
gf16.o __gf256_mul R
gf16.o __mask_0x55 R
gf16.o __mask_16 R
gf16.o __mask_low R
parallel_matrix_op.o UpperTrianglize T
parallel_matrix_op.o batch_2trimat_madd_gf16 T
parallel_matrix_op.o batch_2trimat_madd_gf256 T
parallel_matrix_op.o batch_bmatTr_madd_gf16 T
parallel_matrix_op.o batch_bmatTr_madd_gf256 T
parallel_matrix_op.o batch_matTr_madd_gf16 T
parallel_matrix_op.o batch_matTr_madd_gf256 T
parallel_matrix_op.o batch_mat_madd_gf16 T
parallel_matrix_op.o batch_mat_madd_gf256 T
parallel_matrix_op.o batch_quad_recmat_eval_gf16 T
parallel_matrix_op.o batch_quad_recmat_eval_gf256 T
parallel_matrix_op.o batch_quad_trimat_eval_gf16 T
parallel_matrix_op.o batch_quad_trimat_eval_gf256 T
parallel_matrix_op.o batch_trimatTr_madd_gf16 T
parallel_matrix_op.o batch_trimatTr_madd_gf256 T
parallel_matrix_op.o batch_trimat_madd_gf16 T
parallel_matrix_op.o batch_trimat_madd_gf256 T
parallel_matrix_op_sse.o batch_2trimat_madd_multab_gf16_sse T
parallel_matrix_op_sse.o batch_2trimat_madd_multab_gf256_sse T
parallel_matrix_op_sse.o batch_bmatTr_madd_multab_gf16_sse T
parallel_matrix_op_sse.o batch_bmatTr_madd_multab_gf256_sse T
parallel_matrix_op_sse.o batch_matTr_madd_multab_gf16_sse T
parallel_matrix_op_sse.o batch_matTr_madd_multab_gf256_sse T
parallel_matrix_op_sse.o batch_mat_madd_multab_gf16_sse T
parallel_matrix_op_sse.o batch_mat_madd_multab_gf256_sse T
parallel_matrix_op_sse.o batch_quad_trimat_eval_multab_gf16_sse T
parallel_matrix_op_sse.o batch_quad_trimat_eval_multab_gf256_sse T
parallel_matrix_op_sse.o batch_trimatTr_madd_multab_gf16_sse T
parallel_matrix_op_sse.o batch_trimatTr_madd_multab_gf256_sse T
parallel_matrix_op_sse.o batch_trimat_madd_multab_gf16_sse T
parallel_matrix_op_sse.o batch_trimat_madd_multab_gf256_sse T
rainbow_blas.o public_map T
rainbow_keypair.o cpk_to_pk T
rainbow_keypair.o generate_compact_keypair_cyclic T
rainbow_keypair.o generate_keypair T
rainbow_keypair.o generate_keypair_cyclic T
rainbow_keypair.o generate_secretkey T
rainbow_keypair.o generate_secretkey_cyclic T
rainbow_keypair.o rainbow_evaluate_cpk T
rainbow_keypair.o sk_to_pk T
rainbow_keypair_computation.o calculate_F_from_Q T
rainbow_keypair_computation.o calculate_Q_from_F T
rainbow_keypair_computation.o calculate_Q_from_F_cyclic T
rainbow_keypair_computation.o extcpk_to_pk T
rainbow_keypair_computation_simd.o calculate_F_from_Q_simd T
rainbow_keypair_computation_simd.o calculate_Q_from_F_cyclic_simd T
rainbow_keypair_computation_simd.o calculate_Q_from_F_simd T
rainbow_simd.o rainbow_sign T
rainbow_simd.o rainbow_sign_cyclic T
rainbow_simd.o rainbow_verify T
rainbow_simd.o rainbow_verify_cyclic T
rng.o AES256_CTR_DRBG_Update T
rng.o AES256_ECB T
rng.o DRBG_ctx C
rng.o handleErrors T
rng.o randombytes_init T
rng.o randombytes_init_with_state T
rng.o randombytes_with_state T
rng.o seedexpander T
rng.o seedexpander_init T
utils.o byte_fdump T
utils.o byte_fget T
utils.o byte_from_binfile T
utils.o byte_from_file T
utils.o byte_read_file T
utils_hash.o hash_msg T
utils_prng.o prng_gen T
utils_prng.o prng_set T

Number of similar (compiler,implementation) pairs: 8, namely:

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	ssse3
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	ssse3
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	ssse3
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	ssse3
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	ssse3
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	ssse3
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	ssse3
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	ssse3

Namespace violations

Implementation: crypto_sign/rainbow3ccyclicc683248/amd64
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

Number of similar (compiler,implementation) pairs: 18, namely:

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	amd64 ref
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	amd64 ref
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	amd64 ref
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	amd64 ref
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	amd64 ref
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	amd64 ref
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	amd64 ref
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	amd64 ref
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	amd64 ref