Implementation notes: amd64, dali, crypto_kem/titaniumccamed

Computer: dali
Microarchitecture: amd64; Zen (820f01)
Architecture: amd64
CPU ID: AuthenticAMD-00820f01-178bfbff
SUPERCOP version: 20240808
Operation: crypto_kem
Primitive: titaniumccamed

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
4717512	86505 0 64	247880 788 1816	`T:avx2`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
4738027	85753 0 64	246208 788 1816	`T:avx2`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
4769241	85623 0 64	245608 788 1816	`T:avx2`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
5436086	71493 0 36	232968 820 1752	`T:opt`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
5524592	45157 0 36	204646 812 1752	`T:opt`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
5538924	82551 0 36	244168 820 1752	`T:opt`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
5769949	65637 0 64	227000 788 1816	`T:opt`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
5937717	46941 0 64	207592 788 1816	`T:opt`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
6052538	63901 0 36	226000 820 1752	`T:opt`	`clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
6058104	46960 0 64	207128 788 1816	`T:opt`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
436126535	55383 0 36	217392 820 1752	`T:ref`	`clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
436980192	35978 0 36	195758 812 1752	`T:ref`	`clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
437279756	45301 0 36	206984 820 1752	`T:ref`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
437296538	78224 0 36	240064 820 1752	`T:ref`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
437895218	36191 0 36	195574 812 1752	`T:ref`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
439671285	49226 0 64	210568 788 1816	`T:ref`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
441754478	35719 0 64	196248 788 1816	`T:ref`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
575965571	35850 0 64	195848 788 1816	`T:ref`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	20240716
1262592673	34447 0 64	193344 780 1784	`T:ref`	`gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240802	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_titaniumccamed.a(sampler.o): in function `sampler_zq':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/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_titaniumccamed.a(encrypt.o): in function `crypto_encrypt_keypair':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/encrypt.c:55: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/encrypt.c:63: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(encrypt.o): in function `crypto_encrypt':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/encrypt.c:140: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/encrypt.c:150: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(encrypt.o): in function `crypto_encrypt_open':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/encrypt.c:194: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_core':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:295: undefined reference to `barrett_2q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_1280_2048':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:350: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `intt_core':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:323: undefined reference to `barrett_2q2'
try.c: /usr/bin/ld: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:335: undefined reference to `barrett_2q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_2048_768':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:374: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_512_1792':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:387: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_1280_1792':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:407: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_1792_1792_inv':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:429: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_768_768_inv':
try.c: .../supercop-data/dali/amd64/try/c/clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:447: 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_titaniumccamed.a(encrypt.o): in function `crypto_encrypt_keypair':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/encrypt.c:55: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/encrypt.c:63: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(encrypt.o): in function `crypto_encrypt':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/encrypt.c:140: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/encrypt.c:150: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(encrypt.o): in function `crypto_encrypt_open':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/encrypt.c:194: undefined reference to `barrett_4q2'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_1280_2048':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:350: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_2048_768':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:374: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_512_1792':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:387: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_1280_1792':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:407: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_1792_1792_inv':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:429: undefined reference to `barrett_16q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_768_768_inv':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:447: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_512_768':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:460: undefined reference to `barrett_4q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_768_256':
try.c: .../supercop-data/dali/amd64/try/c/gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall/timingleaks/crypto_kem/titaniumccamed/opt/work/ntt.c:468: undefined reference to `barrett_8q'
try.c: /usr/bin/ld: libcrypto_kem_titaniumccamed.a(ntt.o): in function `ntt_butterfly_1792_2048':
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_1792_1792_inv T
ntt.o intt_2048_256 T
ntt.o intt_2048_768 T
ntt.o intt_768_256 T
ntt.o ntt_1280_1792 T
ntt.o ntt_1280_2048 T
ntt.o ntt_1792_2048 T
ntt.o ntt_512_1792 T
ntt.o ntt_512_768 T
ntt.o ntt_768_768_inv 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_1792_1792_inv T
ntt.o intt_2048_2048 T
ntt.o intt_768_768 T
ntt.o ntt_1792_1792 T
ntt.o ntt_768_768_inv 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)`