Implementation notes: amd64, panther, crypto_hash/asconhashbi32v12

Computer: panther
Microarchitecture: amd64; Tiger Lake (806c1)
Architecture: amd64
CPU ID: GenuineIntel-000806c1-00-bfebfbff
SUPERCOP version: 20240808
Operation: crypto_hash
Primitive: asconhashbi32v12
TimeObject sizeTest sizeImplementationCompilerBenchmark dateSUPERCOP version
6847614215 0 027280 780 952refgcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
810225202 0 014723 756 920bi32gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
817205232 0 016120 780 952bi32gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
818265246 0 018272 780 952bi32gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
827101736 0 012672 780 952refgcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
827891100 0 010651 756 920refgcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
831045744 0 016191 772 952bi32gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
857301706 0 012191 772 952refgcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
888131047 0 014136 780 952bi32_lowsizegcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
88937993 0 010547 756 920bi32_lowsizegcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
893952114 0 015200 780 952bi32_lowreggcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
894062105 0 013072 780 952bi32_lowreggcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
898011038 0 012016 780 952bi32_lowsizegcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
913175619 0 016043 820 888bi32clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
927965978 0 016235 820 888bi32clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
930505857 0 019245 828 920bi32clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
931145857 0 019229 828 920bi32clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
937065916 0 018717 828 888bi32clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
937912692 0 012803 820 888bi32_lowregclang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
941172758 0 015973 828 920bi32_lowregclang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
949211369 0 014773 828 920bi32_lowsizeclang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
953202758 0 015989 828 920bi32_lowregclang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
954711369 0 014757 828 920bi32_lowsizeclang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
956171349 0 011635 820 888bi32_lowsizeclang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
986441898 0 011483 756 920bi32_lowreggcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
987611759 0 012067 820 888refclang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
989012319 0 015741 828 920refclang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
995601967 0 015373 828 920refclang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
1017262548 0 013071 772 952bi32_lowreggcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
1026832269 0 015093 828 888bi32_lowregclang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
1043832337 0 015173 828 888refclang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716
1054841532 0 012039 772 952bi32_lowsizegcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
1061941119 0 013933 828 888bi32_lowsizeclang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
1135071014 0 011467 820 888bi32_lowsizeclang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
1135912187 0 012667 820 888bi32_lowregclang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024080920240808
3339701391 0 011883 820 888refclang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall2024071620240716

Compiler output


hash.c: In file included from round.h:8,
hash.c:                  from permutations.h:11,
hash.c:                  from hash.c:4:
hash.c: word.h:55:11: warning: 'crypto_int64_bitmod_01' is static but used in inline function 'NOTZERO' which is not static
hash.c:    55 |   return (crypto_int64_bitmod_01(((int)(result & 0xff) - 1),8)) - 1;
hash.c:       |           ^~~~~~~~~~~~~~~~~~~~~~
permutations.c: In file included from round.h:8,
permutations.c:                  from permutations.h:11,
permutations.c:                  from permutations.c:1:
permutations.c: word.h:55:11: warning: 'crypto_int64_bitmod_01' is static but used in inline function 'NOTZERO' which is not static
permutations.c:    55 |   return (crypto_int64_bitmod_01(((int)(result & 0xff) - 1),8)) - 1;
permutations.c:       |           ^~~~~~~~~~~~~~~~~~~~~~

Number of similar (implementation,compiler) pairs: 12, namely:
ImplementationCompiler
bi32gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowreggcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowreggcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowreggcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowreggcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizegcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizegcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizegcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizegcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

Namespace violations


constants.o constants R
permutations.o P12 T

Number of similar (implementation,compiler) pairs: 9, namely:
ImplementationCompiler
bi32clang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32clang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32clang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32clang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

Namespace violations


constants.o constants R
hash.o ascon_absorb T
hash.o ascon_inithash T
hash.o ascon_squeeze T

Number of similar (implementation,compiler) pairs: 9, namely:
ImplementationCompiler
bi32_lowregclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowregclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowregclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowregclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowregclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowreggcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowreggcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowreggcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowreggcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

Namespace violations


constants.o constants R
permutations.o P T

Number of similar (implementation,compiler) pairs: 9, namely:
ImplementationCompiler
bi32_lowsizeclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowsizeclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowsizeclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowsizeclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowsizeclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowsizegcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizegcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizegcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizegcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

TIMECOP error (can be valgrind bug)


error 111

Process terminating with default action of signal 4 (SIGILL)
 Illegal opcode at address 0x402010
   at 0x...: st32 (try-anything.c:47)
   by 0x...: core (try-anything.c:78)
   by 0x...: salsa20 (try-anything.c:101)
   by 0x...: testvector (try-anything.c:124)
   by 0x...: myrandom (try-anything.c:132)
   by 0x...: test (try.c:85)
   by 0x...: main (try-anything.c:345)

Number of similar (implementation,compiler) pairs: 4, namely:
ImplementationCompiler
bi32clang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowregclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowsizeclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
refclang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)

TIMECOP error (can be valgrind bug)


error 111

Process terminating with default action of signal 4 (SIGILL)
 Illegal opcode at address 0x403D85
   at 0x...: ROUND (round.h:25)
   by 0x...: P12ROUNDS (permutations.h:25)
   by 0x...: P12 (permutations.c:5)
   by 0x...: P (permutations.h:63)
   by 0x...: ascon_absorb (hash.c:54)
   by 0x...: crypto_hash_asconhashbi32v12_bi32_constbranchindex (hash.c:84)
   by 0x...: test (try.c:90)
   by 0x...: main (try-anything.c:345)

Number of similar (implementation,compiler) pairs: 1, namely:
ImplementationCompiler
bi32clang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)

TIMECOP error (can be valgrind bug)


error 111

Process terminating with default action of signal 4 (SIGILL)
 Illegal opcode at address 0x401A5E
   at 0x...: core (try-anything.c:73)
   by 0x...: salsa20 (try-anything.c:101)
   by 0x...: testvector (try-anything.c:124)
   by 0x...: myrandom (try-anything.c:132)
   by 0x...: test (try.c:85)
   by 0x...: main (try-anything.c:345)

Number of similar (implementation,compiler) pairs: 4, namely:
ImplementationCompiler
bi32clang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowregclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowsizeclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
refclang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)

TIMECOP error (can be valgrind bug)


error 111

Process terminating with default action of signal 4 (SIGILL)
 Illegal opcode at address 0x109C49
   at 0x...: salsa20.part.0 (try-anything.c:102)
   by 0x...: salsa20 (try-anything.c:85)
   by 0x...: canary (try-anything.c:148)
   by 0x...: input_prepare (try-anything.c:163)
   by 0x...: test (try.c:88)
   by 0x...: main (try-anything.c:345)

Number of similar (implementation,compiler) pairs: 4, namely:
ImplementationCompiler
bi32gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowreggcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizegcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
refgcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

TIMECOP error (can be valgrind bug)


error 111

Process terminating with default action of signal 4 (SIGILL)
 Illegal opcode at address 0x109B0A
   at 0x...: st32 (try-anything.c:47)
   by 0x...: core (try-anything.c:78)
   by 0x...: salsa20 (try-anything.c:101)
   by 0x...: salsa20 (try-anything.c:81)
   by 0x...: testvector (try-anything.c:124)
   by 0x...: myrandom (try-anything.c:132)
   by 0x...: test (try.c:85)
   by 0x...: main (try-anything.c:345)

Number of similar (implementation,compiler) pairs: 4, namely:
ImplementationCompiler
bi32gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowreggcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizegcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
refgcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)

TIMECOP error (can be valgrind bug)


error 111

Process terminating with default action of signal 4 (SIGILL)
 Illegal opcode at address 0x402BC4
   at 0x...: ROR32 (word.h:33)
   by 0x...: ROR (word.h:39)
   by 0x...: ROUND (round.h:30)
   by 0x...: PROUNDS (round.h:45)
   by 0x...: P (permutations.h:70)
   by 0x...: ascon_absorb (hash.c:54)
   by 0x...: crypto_hash_asconhashbi32v12_bi32_lowreg_constbranchindex (hash.c:84)
   by 0x...: test (try.c:90)
   by 0x...: main (try-anything.c:345)

Number of similar (implementation,compiler) pairs: 1, namely:
ImplementationCompiler
bi32_lowregclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)

TIMECOP error (can be valgrind bug)


error 111

Process terminating with default action of signal 4 (SIGILL)
 Illegal opcode at address 0x402CC0
   at 0x...: ROR32 (word.h:33)
   by 0x...: ROR (word.h:39)
   by 0x...: ROUND (round.h:30)
   by 0x...: PROUNDS (round.h:45)
   by 0x...: P (permutations.c:27)
   by 0x...: ascon_absorb (hash.c:54)
   by 0x...: crypto_hash_asconhashbi32v12_bi32_lowsize_constbranchindex (hash.c:84)
   by 0x...: test (try.c:90)
   by 0x...: main (try-anything.c:345)

Number of similar (implementation,compiler) pairs: 1, namely:
ImplementationCompiler
bi32_lowsizeclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)

Passed TIMECOP


TIMECOP iterations: 10

Number of similar (implementation,compiler) pairs: 17, namely:
ImplementationCompiler
bi32clang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowregclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowregclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowreggcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowreggcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizeclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowsizeclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
bi32_lowsizegcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
bi32_lowsizegcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
refclang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
refclang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
refclang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_11.0.1)
refgcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)
refgcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (10.2.1_20210110)