Implementation notes: amd64, panther, crypto_kem/titaniumccahi

Computer: panther
Microarchitecture: amd64; Tiger Lake (806c1)
Architecture: amd64
CPU ID: GenuineIntel-000806c1-00-bfebfbff
SUPERCOP version: 20240716
Operation: crypto_kem
Primitive: titaniumccahi

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
3163312	107757 0 64	237048 788 1848	`T:avx2`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
3209946	107158 0 64	234520 788 1848	`T:avx2`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
3473706	107159 0 64	233896 788 1848	`T:avx2`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
3884261	196976 0 36	307061 836 1784	`T:opt`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
3892711	102755 0 36	231349 836 1784	`T:opt`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
4319676	55867 0 36	182299 828 1784	`T:opt`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
4392483	73378 0 64	202432 788 1848	`T:opt`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
4497201	72930 0 36	201885 836 1784	`T:opt`	`clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
4664856	56623 0 64	184160 788 1848	`T:opt`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
5145881	56514 0 64	183504 788 1848	`T:opt`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
786121702	58385 0 36	187493 836 1784	`T:ref`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
786133405	84358 0 36	213477 836 1784	`T:ref`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
836737600	44483 0 36	170811 828 1784	`T:ref`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
837321194	43375 0 36	169987 828 1784	`T:ref`	`clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
846935479	61005 0 36	189917 836 1784	`T:ref`	`clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
865910157	55186 0 64	184288 788 1848	`T:ref`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
868990919	42806 0 64	170192 788 1848	`T:ref`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
897637464	42976 0 64	169784 788 1848	`T:ref`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716
1392779881	41931 0 64	167696 780 1816	`T:ref`	`gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240722	20240716

Compiler output

encrypt.c: In file included from encrypt.c:18:
encrypt.c: In file included from /usr/lib/llvm-11/lib/clang/11.0.1/include/x86intrin.h:13:
encrypt.c: /usr/lib/llvm-11/lib/clang/11.0.1/include/ia32intrin.h:210:16: error: expected identifier or '('
encrypt.c:   unsigned int D;
encrypt.c:                ^
encrypt.c: ./param.h:28:11: note: expanded from macro 'D'
encrypt.c: #define D 256
encrypt.c:           ^
encrypt.c: In file included from encrypt.c:18:
encrypt.c: In file included from /usr/lib/llvm-11/lib/clang/11.0.1/include/x86intrin.h:13:
encrypt.c: /usr/lib/llvm-11/lib/clang/11.0.1/include/ia32intrin.h:211:20: error: cannot take the address of an rvalue of type 'int'
encrypt.c:   __builtin_memcpy(&D, &__A, sizeof(__A));
encrypt.c:                    ^~
encrypt.c: /usr/lib/llvm-11/lib/clang/11.0.1/include/ia32intrin.h:227:22: error: expected identifier or '('
encrypt.c:   unsigned long long D;
encrypt.c:                      ^
encrypt.c: ./param.h:28:11: note: expanded from macro 'D'
encrypt.c: #define D 256
encrypt.c:           ^
encrypt.c: In file included from encrypt.c:18:
encrypt.c: In file included from /usr/lib/llvm-11/lib/clang/11.0.1/include/x86intrin.h:13:
encrypt.c: /usr/lib/llvm-11/lib/clang/11.0.1/include/ia32intrin.h:228:20: error: cannot take the address of an rvalue of type 'int'
encrypt.c:   __builtin_memcpy(&D, &__A, sizeof(__A));
encrypt.c:                    ^~
encrypt.c: /usr/lib/llvm-11/lib/clang/11.0.1/include/ia32intrin.h:244:9: error: expected identifier or '('
encrypt.c: ...

Number of similar (implementation,compiler) pairs: 5, namely:

Implementation	Compiler
`T:avx2`	`clang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:avx2`	`clang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:avx2`	`clang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:avx2`	`clang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:avx2`	`clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`

Compiler output

try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(sampler.o): in function `sampler_zq':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/avx2/work/sampler.c:160: undefined reference to `barrett_zq'
try.c: collect2: error: ld returned 1 exit status

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

Implementation	Compiler
`T:avx2`	`gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`

Compiler output

try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(encrypt.o): in function `crypto_encrypt_keypair':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/encrypt.c:55: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/encrypt.c:63: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(encrypt.o): in function `crypto_encrypt':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/encrypt.c:140: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/encrypt.c:150: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(encrypt.o): in function `crypto_encrypt_open':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/encrypt.c:194: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_core':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:305: undefined reference to `barrett_2q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_1536_2560':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:361: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `intt_core':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:333: undefined reference to `barrett_2q2'
try.c: /usr/bin/ld: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:345: undefined reference to `barrett_2q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_2560_1024':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:389: undefined reference to `barrett_32q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_768_2304':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:404: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_1536_2304':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:427: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_2304_2304_inv':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:453: undefined reference to `barrett_32q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_1024_1024_inv':
try.c: .../supercop-data/panther/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:474: undefined reference to `barrett_8q'
try.c: ...

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

Implementation	Compiler
`T:opt`	`clang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`

Compiler output

try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(encrypt.o): in function `crypto_encrypt_keypair':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/encrypt.c:55: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/encrypt.c:63: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(encrypt.o): in function `crypto_encrypt':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/encrypt.c:140: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/encrypt.c:150: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(encrypt.o): in function `crypto_encrypt_open':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/encrypt.c:194: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_1536_2560':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:361: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_2560_1024':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:389: undefined reference to `barrett_32q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_768_2304':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:404: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_1536_2304':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:427: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_2304_2304_inv':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:453: undefined reference to `barrett_32q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_1024_1024_inv':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:474: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_768_1024':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:489: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_1024_256':
try.c: .../supercop-data/panther/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccahi/opt/work/ntt.c:498: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccahi.a(ntt.o): in function `ntt_butterfly_2304_2560':
try.c: ...

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

Implementation	Compiler
`T:opt`	`gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`

Namespace violations

encrypt.o crypto_encrypt T
encrypt.o crypto_encrypt_keypair T
encrypt.o crypto_encrypt_open T
fastrandombytes.o fastrandombytes T
fastrandombytes.o fastrandombytes_setseed T
fastrandombytes.o iv B
fastrandombytes.o key B
ntt.o intt_1024_256 T
ntt.o intt_2304_2304_inv T
ntt.o intt_2560_1024 T
ntt.o intt_2560_256 T
ntt.o ntt_1024_1024_inv T
ntt.o ntt_1536_2304 T
ntt.o ntt_1536_2560 T
ntt.o ntt_2304_2560 T
ntt.o ntt_768_1024 T
ntt.o ntt_768_2304 T
pack.o poly_decode T
pack.o poly_decode_c2 T
pack.o poly_encode T
pack.o poly_encode_c2 T
sampler.o sampler_binomial T
sampler.o sampler_zb T
sampler.o sampler_zq T

Number of similar (implementation,compiler) pairs: 10, namely:

Implementation	Compiler
`T:avx2`	`gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:avx2`	`gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:avx2`	`gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:opt`	`clang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:opt`	`clang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:opt`	`clang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:opt`	`clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:opt`	`gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:opt`	`gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:opt`	`gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`

Namespace violations

encrypt.o crypto_encrypt T
encrypt.o crypto_encrypt_keypair T
encrypt.o crypto_encrypt_open T
fastrandombytes.o fastrandombytes T
fastrandombytes.o fastrandombytes_setseed T
fastrandombytes.o iv B
fastrandombytes.o key B
ntt.o intt_1024_1024 T
ntt.o intt_2304_2304_inv T
ntt.o intt_2560_2560 T
ntt.o ntt_1024_1024_inv T
ntt.o ntt_2304_2304 T
pack.o poly_decode T
pack.o poly_decode_c2 T
pack.o poly_encode T
pack.o poly_encode_c2 T
product.o mp T
product.o product T
sampler.o sampler_binomial T
sampler.o sampler_zb T
sampler.o sampler_zq T

Number of similar (implementation,compiler) pairs: 9, namely:

Implementation	Compiler
`T:ref`	`clang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:ref`	`clang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:ref`	`clang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:ref`	`clang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:ref`	`clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)`
`T:ref`	`gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:ref`	`gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:ref`	`gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`
`T:ref`	`gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)`