Implementation notes: amd64, robin204, crypto_dh/ed521gs

Computer: robin204
Architecture: amd64
CPU ID: GenuineIntel-000306f2-bfebfbff
SUPERCOP version: 20170228
Operation: crypto_dh
Primitive: ed521gs
TimeObject sizeTest sizeImplementationCompilerBenchmark dateSUPERCOP version
4148232? ? ?? ? ?refgcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv2017041520170228
4217024? ? ?? ? ?refgcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv2017041520170228
4244352? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=k8_-O3_-fomit-frame-pointer2017041520170228
4252056? ? ?? ? ?refgcc_-m64_-march=barcelona_-O3_-fomit-frame-pointer2017041520170228
4256784? ? ?? ? ?refgcc_-funroll-loops_-march=k8_-O3_-fomit-frame-pointer2017041520170228
4260792? ? ?? ? ?refgcc_-funroll-loops_-march=barcelona_-O3_-fomit-frame-pointer2017041520170228
4263888? ? ?? ? ?refgcc_-march=barcelona_-O3_-fomit-frame-pointer2017041520170228
4277192? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=barcelona_-O3_-fomit-frame-pointer2017041520170228
4300384? ? ?? ? ?refgcc_-march=k8_-O3_-fomit-frame-pointer2017041520170228
4306412? ? ?? ? ?refgcc_-funroll-loops_-O3_-fomit-frame-pointer2017041520170228
4307936? ? ?? ? ?refgcc_-m64_-march=corei7-avx_-O3_-fomit-frame-pointer2017041520170228
4323196? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=nocona_-O3_-fomit-frame-pointer2017041520170228
4323420? ? ?? ? ?refgcc_-m64_-march=core2_-msse4_-O3_-fomit-frame-pointer2017041520170228
4324816? ? ?? ? ?refgcc_-m64_-march=corei7_-O3_-fomit-frame-pointer2017041520170228
4326308? ? ?? ? ?refgcc_-m64_-O3_-fomit-frame-pointer2017041520170228
4331172? ? ?? ? ?refgcc_-O3_-fomit-frame-pointer2017041520170228
4332816? ? ?? ? ?refgcc_-m64_-march=core-avx2_-O3_-fomit-frame-pointer2017041520170228
4333224? ? ?? ? ?refgcc_-m64_-march=barcelona_-O2_-fomit-frame-pointer2017041520170228
4337168? ? ?? ? ?refgcc_-march=barcelona_-O2_-fomit-frame-pointer2017041520170228
4338512? ? ?? ? ?refgcc_-m64_-march=nocona_-O3_-fomit-frame-pointer2017041520170228
4341708? ? ?? ? ?refgcc_-fno-schedule-insns_-O3_-fomit-frame-pointer2017041520170228
4343284? ? ?? ? ?refgcc_-m64_-march=core-avx-i_-O3_-fomit-frame-pointer2017041520170228
4349592? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=barcelona_-O2_-fomit-frame-pointer2017041520170228
4354972? ? ?? ? ?refgcc_-march=k8_-O2_-fomit-frame-pointer2017041520170228
4355708? ? ?? ? ?refgcc_-m64_-march=core2_-O3_-fomit-frame-pointer2017041520170228
4356672? ? ?? ? ?refgcc_-m64_-march=native_-mtune=native_-O3_-fomit-frame-pointer2017041520170228
4357616? ? ?? ? ?refgcc_-m64_-march=core2_-msse4.1_-O3_-fomit-frame-pointer2017041520170228
4363040? ? ?? ? ?refgcc_-march=nocona_-O3_-fomit-frame-pointer2017041520170228
4365084? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=k8_-O2_-fomit-frame-pointer2017041520170228
4367856? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=k8_-Os_-fomit-frame-pointer2017041520170228
4376448? ? ?? ? ?refgcc_-funroll-loops_-march=k8_-Os_-fomit-frame-pointer2017041520170228
4380668? ? ?? ? ?refgcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv2017041520170228
4381048? ? ?? ? ?refgcc_-m64_-march=corei7-avx_-Os_-fomit-frame-pointer2017041520170228
4382404? ? ?? ? ?refgcc_-m64_-march=core-avx-i_-Os_-fomit-frame-pointer2017041520170228
4391300? ? ?? ? ?refgcc_-march=nocona_-Os_-fomit-frame-pointer2017041520170228
4393932? ? ?? ? ?refgcc_-m64_-march=nocona_-Os_-fomit-frame-pointer2017041520170228
4394012? ? ?? ? ?refgcc_-funroll-loops_-march=k8_-O2_-fomit-frame-pointer2017041520170228
4394924? ? ?? ? ?refgcc_-funroll-loops_-Os_-fomit-frame-pointer2017041520170228
4398612? ? ?? ? ?refgcc_-funroll-loops_-march=barcelona_-O2_-fomit-frame-pointer2017041520170228
4400232? ? ?? ? ?refgcc_-m64_-march=k8_-O2_-fomit-frame-pointer2017041520170228
4406476? ? ?? ? ?refgcc_-funroll-loops_-fno-schedule-insns_-O3_-fomit-frame-pointer2017041520170228
4409984? ? ?? ? ?refgcc_-funroll-loops_-march=barcelona_-Os_-fomit-frame-pointer2017041520170228
4410148? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=barcelona_-Os_-fomit-frame-pointer2017041520170228
4419888? ? ?? ? ?refgcc_-funroll-loops_-march=nocona_-Os_-fomit-frame-pointer2017041520170228
4422212? ? ?? ? ?refgcc_-funroll-loops_-fno-schedule-insns_-Os_-fomit-frame-pointer2017041520170228
4424884? ? ?? ? ?refgcc_-funroll-loops_-m64_-Os_-fomit-frame-pointer2017041520170228
4434972? ? ?? ? ?refgcc_-m64_-march=native_-mtune=native_-Os_-fomit-frame-pointer2017041520170228
4441824? ? ?? ? ?refgcc_-m64_-march=core2_-Os_-fomit-frame-pointer2017041520170228
4444196? ? ?? ? ?refgcc_-m64_-march=corei7_-Os_-fomit-frame-pointer2017041520170228
4444240? ? ?? ? ?refgcc_-O2_-fomit-frame-pointer2017041520170228
4444860? ? ?? ? ?refgcc_-m64_-O2_-fomit-frame-pointer2017041520170228
4453804? ? ?? ? ?refgcc_-m64_-march=core2_-msse4.1_-Os_-fomit-frame-pointer2017041520170228
4455852? ? ?? ? ?refgcc_-m64_-march=core-avx2_-Os_-fomit-frame-pointer2017041520170228
4456940? ? ?? ? ?refgcc_-m64_-march=core-avx2_-O2_-fomit-frame-pointer2017041520170228
4457100? ? ?? ? ?refgcc_-m64_-march=core2_-msse4_-Os_-fomit-frame-pointer2017041520170228
4458128? ? ?? ? ?refgcc_-m64_-Os_-fomit-frame-pointer2017041520170228
4458324? ? ?? ? ?refgcc_-m64_-march=native_-mtune=native_-O2_-fomit-frame-pointer2017041520170228
4459640? ? ?? ? ?refgcc_-m64_-march=barcelona_-Os_-fomit-frame-pointer2017041520170228
4461196? ? ?? ? ?refgcc_-Os_-fomit-frame-pointer2017041520170228
4462776? ? ?? ? ?refgcc_-funroll-loops_-O2_-fomit-frame-pointer2017041520170228
4463348? ? ?? ? ?refgcc_-funroll-loops_-fno-schedule-insns_-O2_-fomit-frame-pointer2017041520170228
4466520? ? ?? ? ?refgcc_-funroll-loops_-m64_-O3_-fomit-frame-pointer2017041520170228
4467132? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=nocona_-O2_-fomit-frame-pointer2017041520170228
4467404? ? ?? ? ?refgcc_-march=k8_-Os_-fomit-frame-pointer2017041520170228
4469660? ? ?? ? ?refgcc_-m64_-march=k8_-Os_-fomit-frame-pointer2017041520170228
4474464? ? ?? ? ?refgcc_-fno-schedule-insns_-O2_-fomit-frame-pointer2017041520170228
4478620? ? ?? ? ?refgcc_-funroll-loops_-m64_-O2_-fomit-frame-pointer2017041520170228
4485644? ? ?? ? ?refgcc_-march=nocona_-O2_-fomit-frame-pointer2017041520170228
4487588? ? ?? ? ?refgcc_-funroll-loops_-march=nocona_-O3_-fomit-frame-pointer2017041520170228
4488088? ? ?? ? ?refgcc_-funroll-loops_-march=nocona_-O2_-fomit-frame-pointer2017041520170228
4489096? ? ?? ? ?refgcc_-m64_-march=core2_-O2_-fomit-frame-pointer2017041520170228
4490768? ? ?? ? ?refgcc_-march=barcelona_-Os_-fomit-frame-pointer2017041520170228
4491784? ? ?? ? ?refgcc_-m64_-march=corei7-avx_-O2_-fomit-frame-pointer2017041520170228
4491840? ? ?? ? ?refgcc_-fno-schedule-insns_-Os_-fomit-frame-pointer2017041520170228
4495464? ? ?? ? ?refgcc_-m64_-march=corei7_-O2_-fomit-frame-pointer2017041520170228
4495568? ? ?? ? ?refgcc_-m64_-march=nocona_-O2_-fomit-frame-pointer2017041520170228
4496652? ? ?? ? ?refgcc_-m64_-march=core-avx-i_-O2_-fomit-frame-pointer2017041520170228
4505884? ? ?? ? ?refgcc_-m64_-march=core2_-msse4.1_-O2_-fomit-frame-pointer2017041520170228
4519672? ? ?? ? ?refgcc_-m64_-march=core2_-msse4_-O2_-fomit-frame-pointer2017041520170228
4547908? ? ?? ? ?refgcc_-m64_-march=k8_-O3_-fomit-frame-pointer2017041520170228
4612512? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=nocona_-Os_-fomit-frame-pointer2017041520170228
6624772? ? ?? ? ?refgcc_-funroll-loops_-march=k8_-O_-fomit-frame-pointer2017041520170228
6625448? ? ?? ? ?refgcc_-funroll-loops_-march=barcelona_-O_-fomit-frame-pointer2017041520170228
6625992? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=k8_-O_-fomit-frame-pointer2017041520170228
6649284? ? ?? ? ?refgcc_-march=barcelona_-O_-fomit-frame-pointer2017041520170228
6649344? ? ?? ? ?refgcc_-m64_-march=k8_-O_-fomit-frame-pointer2017041520170228
6654384? ? ?? ? ?refgcc_-m64_-march=barcelona_-O_-fomit-frame-pointer2017041520170228
6661268? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=barcelona_-O_-fomit-frame-pointer2017041520170228
6689164? ? ?? ? ?refgcc_-march=k8_-O_-fomit-frame-pointer2017041520170228
6690112? ? ?? ? ?refgcc_-m64_-march=nocona_-O_-fomit-frame-pointer2017041520170228
6700684? ? ?? ? ?refgcc_-march=nocona_-O_-fomit-frame-pointer2017041520170228
6706276? ? ?? ? ?refgcc_-m64_-march=core2_-O_-fomit-frame-pointer2017041520170228
6715616? ? ?? ? ?refgcc_-m64_-march=core2_-msse4.1_-O_-fomit-frame-pointer2017041520170228
6731292? ? ?? ? ?refgcc_-funroll-loops_-m64_-march=nocona_-O_-fomit-frame-pointer2017041520170228
6735660? ? ?? ? ?refgcc_-funroll-loops_-m64_-O_-fomit-frame-pointer2017041520170228
6736288? ? ?? ? ?refgcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv2017041520170228
6741584? ? ?? ? ?refgcc_-m64_-march=core-avx-i_-O_-fomit-frame-pointer2017041520170228
6744324? ? ?? ? ?refgcc_-funroll-loops_-O_-fomit-frame-pointer2017041520170228
6755152? ? ?? ? ?refgcc_-m64_-march=corei7_-O_-fomit-frame-pointer2017041520170228
6764908? ? ?? ? ?refgcc_-O_-fomit-frame-pointer2017041520170228
6769576? ? ?? ? ?refgcc_-m64_-march=core-avx2_-O_-fomit-frame-pointer2017041520170228
6773772? ? ?? ? ?refgcc_-m64_-march=native_-mtune=native_-O_-fomit-frame-pointer2017041520170228
6782656? ? ?? ? ?refgcc_-funroll-loops_-march=nocona_-O_-fomit-frame-pointer2017041520170228
6786792? ? ?? ? ?refgcc_-m64_-march=corei7-avx_-O_-fomit-frame-pointer2017041520170228
6803104? ? ?? ? ?refgcc_-m64_-march=core2_-msse4_-O_-fomit-frame-pointer2017041520170228
6809380? ? ?? ? ?refgcc_-fno-schedule-insns_-O_-fomit-frame-pointer2017041520170228
6839412? ? ?? ? ?refgcc_-funroll-loops_-fno-schedule-insns_-O_-fomit-frame-pointer2017041520170228
6978272? ? ?? ? ?refgcc_-m64_-O_-fomit-frame-pointer2017041520170228
7552048? ? ?? ? ?reficc_-xCORE-AVX2_-O2_-fomit-frame-pointer2017041520170228
7771724? ? ?? ? ?reficc_-xCORE-AVX2_-O3_-fomit-frame-pointer2017041520170228
7863088? ? ?? ? ?reficc_-no-vec2017041520170228
8069916? ? ?? ? ?reficc2017041520170228
13952588? ? ?? ? ?refgcc2017041520170228
14187960? ? ?? ? ?refgcc_-funroll-loops2017041520170228

Compiler output

Implementation: crypto_dh/ed521gs/ref
Compiler: cc
dh.c: dh.c:18: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'type128'
dh.c: dh.c: In function 'gmuli':
dh.c: dh.c:154: error: 'type128' undeclared (first use in this function)
dh.c: dh.c:154: error: (Each undeclared identifier is reported only once
dh.c: dh.c:154: error: for each function it appears in.)
dh.c: dh.c:154: error: expected ';' before 't'
dh.c: dh.c:156: error: 't' undeclared (first use in this function)
dh.c: dh.c:156: error: expected ';' before 'w'
dh.c: dh.c:159: error: expected ';' before 'w'
dh.c: dh.c:162: error: expected ';' before 'w'
dh.c: dh.c:165: error: expected ';' before 'w'
dh.c: dh.c:168: error: expected ';' before 'w'
dh.c: dh.c:171: error: expected ';' before 'w'
dh.c: dh.c:174: error: expected ';' before 'w'
dh.c: dh.c:177: error: expected ';' before 'w'
dh.c: dh.c:180: error: expected ';' before 'w'
dh.c: dh.c: In function 'gsqr':
dh.c: dh.c:190: error: 'type128' undeclared (first use in this function)
dh.c: dh.c:190: error: expected ';' before 't0'
dh.c: dh.c:191: error: 't1' undeclared (first use in this function)
dh.c: dh.c:191: error: expected ')' before 'x'
dh.c: dh.c:191: error: expected ';' before 'x'
dh.c: dh.c:192: error: 't0' undeclared (first use in this function)
dh.c: dh.c:193: error: 't2' undeclared (first use in this function)
dh.c: dh.c:193: error: expected ')' before 'x'
dh.c: ...

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

Compiler output

Implementation: crypto_dh/ed521gs/ref
Compiler: gcc
dh.c: dh.c: In function 'crypto_dh_ed521gs_ref_keypair':
dh.c: dh.c:771:2: warning: implicit declaration of function 'randombytes' [-Wimplicit-function-declaration]
dh.c: randombytes(sk,PANES-1);
dh.c: ^~~~~~~~~~~

Number of similar (compiler,implementation) pairs: 106, namely:
CompilerImplementations
gcc ref
gcc -O2 -fomit-frame-pointer ref
gcc -O3 -fomit-frame-pointer ref
gcc -O -fomit-frame-pointer ref
gcc -Os -fomit-frame-pointer ref
gcc -fno-schedule-insns -O2 -fomit-frame-pointer ref
gcc -fno-schedule-insns -O3 -fomit-frame-pointer ref
gcc -fno-schedule-insns -O -fomit-frame-pointer ref
gcc -fno-schedule-insns -Os -fomit-frame-pointer ref
gcc -funroll-loops ref
gcc -funroll-loops -O2 -fomit-frame-pointer ref
gcc -funroll-loops -O3 -fomit-frame-pointer ref
gcc -funroll-loops -O -fomit-frame-pointer ref
gcc -funroll-loops -Os -fomit-frame-pointer ref
gcc -funroll-loops -fno-schedule-insns -O2 -fomit-frame-pointer ref
gcc -funroll-loops -fno-schedule-insns -O3 -fomit-frame-pointer ref
gcc -funroll-loops -fno-schedule-insns -O -fomit-frame-pointer ref
gcc -funroll-loops -fno-schedule-insns -Os -fomit-frame-pointer ref
gcc -funroll-loops -m64 -O2 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -O3 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -O -fomit-frame-pointer ref
gcc -funroll-loops -m64 -Os -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=barcelona -O2 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=barcelona -O3 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=barcelona -O -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=barcelona -Os -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=k8 -O2 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=k8 -O3 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=k8 -O -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=k8 -Os -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=nocona -O2 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=nocona -O3 -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=nocona -O -fomit-frame-pointer ref
gcc -funroll-loops -m64 -march=nocona -Os -fomit-frame-pointer ref
gcc -funroll-loops -march=barcelona -O2 -fomit-frame-pointer ref
gcc -funroll-loops -march=barcelona -O3 -fomit-frame-pointer ref
gcc -funroll-loops -march=barcelona -O -fomit-frame-pointer ref
gcc -funroll-loops -march=barcelona -Os -fomit-frame-pointer ref
gcc -funroll-loops -march=k8 -O2 -fomit-frame-pointer ref
gcc -funroll-loops -march=k8 -O3 -fomit-frame-pointer ref
gcc -funroll-loops -march=k8 -O -fomit-frame-pointer ref
gcc -funroll-loops -march=k8 -Os -fomit-frame-pointer ref
gcc -funroll-loops -march=nocona -O2 -fomit-frame-pointer ref
gcc -funroll-loops -march=nocona -O3 -fomit-frame-pointer ref
gcc -funroll-loops -march=nocona -O -fomit-frame-pointer ref
gcc -funroll-loops -march=nocona -Os -fomit-frame-pointer ref
gcc -m64 -O2 -fomit-frame-pointer ref
gcc -m64 -O3 -fomit-frame-pointer ref
gcc -m64 -O -fomit-frame-pointer ref
gcc -m64 -Os -fomit-frame-pointer ref
gcc -m64 -march=core-avx-i -O2 -fomit-frame-pointer ref
gcc -m64 -march=core-avx-i -O3 -fomit-frame-pointer ref
gcc -m64 -march=core-avx-i -O -fomit-frame-pointer ref
gcc -m64 -march=core-avx-i -Os -fomit-frame-pointer ref
gcc -m64 -march=core-avx2 -O2 -fomit-frame-pointer ref
gcc -m64 -march=core-avx2 -O3 -fomit-frame-pointer ref
gcc -m64 -march=core-avx2 -O -fomit-frame-pointer ref
gcc -m64 -march=core-avx2 -Os -fomit-frame-pointer ref
gcc -m64 -march=core2 -O2 -fomit-frame-pointer ref
gcc -m64 -march=core2 -O3 -fomit-frame-pointer ref
gcc -m64 -march=core2 -O -fomit-frame-pointer ref
gcc -m64 -march=core2 -Os -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4.1 -O2 -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4.1 -O3 -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4.1 -O -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4.1 -Os -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4 -O2 -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4 -O3 -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4 -O -fomit-frame-pointer ref
gcc -m64 -march=core2 -msse4 -Os -fomit-frame-pointer ref
gcc -m64 -march=corei7-avx -O2 -fomit-frame-pointer ref
gcc -m64 -march=corei7-avx -O3 -fomit-frame-pointer ref
gcc -m64 -march=corei7-avx -O -fomit-frame-pointer ref
gcc -m64 -march=corei7-avx -Os -fomit-frame-pointer ref
gcc -m64 -march=corei7 -O2 -fomit-frame-pointer ref
gcc -m64 -march=corei7 -O3 -fomit-frame-pointer ref
gcc -m64 -march=corei7 -O -fomit-frame-pointer ref
gcc -m64 -march=corei7 -Os -fomit-frame-pointer ref
gcc -m64 -march=k8 -O2 -fomit-frame-pointer ref
gcc -m64 -march=k8 -O3 -fomit-frame-pointer ref
gcc -m64 -march=k8 -O -fomit-frame-pointer ref
gcc -m64 -march=k8 -Os -fomit-frame-pointer ref
gcc -m64 -march=native -mtune=native -O2 -fomit-frame-pointer ref
gcc -m64 -march=native -mtune=native -O3 -fomit-frame-pointer ref
gcc -m64 -march=native -mtune=native -O -fomit-frame-pointer ref
gcc -m64 -march=native -mtune=native -Os -fomit-frame-pointer ref
gcc -m64 -march=nocona -O2 -fomit-frame-pointer ref
gcc -m64 -march=nocona -O3 -fomit-frame-pointer ref
gcc -m64 -march=nocona -O -fomit-frame-pointer ref
gcc -m64 -march=nocona -Os -fomit-frame-pointer ref
gcc -march=barcelona -O2 -fomit-frame-pointer ref
gcc -march=barcelona -O3 -fomit-frame-pointer ref
gcc -march=barcelona -O -fomit-frame-pointer ref
gcc -march=barcelona -Os -fomit-frame-pointer ref
gcc -march=k8 -O2 -fomit-frame-pointer ref
gcc -march=k8 -O3 -fomit-frame-pointer ref
gcc -march=k8 -O -fomit-frame-pointer ref
gcc -march=k8 -Os -fomit-frame-pointer ref
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv ref
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv ref
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv ref
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv ref
gcc -march=nocona -O2 -fomit-frame-pointer ref
gcc -march=nocona -O3 -fomit-frame-pointer ref
gcc -march=nocona -O -fomit-frame-pointer ref
gcc -march=nocona -Os -fomit-frame-pointer ref

Compiler output

Implementation: crypto_dh/ed521gs/ref
Compiler: gcc -m64 -march=barcelona -O2 -fomit-frame-pointer
dh.c: dh.c: In function 'crypto_dh_ed521gs_ref_keypair':
dh.c: dh.c:771:2: warning: implicit declaration of function 'randombytes' [-Wimplicit-function-declaration]
dh.c: randombytes(sk,PANES-1);
dh.c: ^~~~~~~~~~~
dh.c: dh.c: In function 'crypto_dh_ed521gs_ref_keypair':
dh.c: dh.c:771:2: warning: implicit declaration of function 'randombytes' [-Wimplicit-function-declaration]
dh.c: randombytes(sk,PANES-1);
dh.c: ^~~~~~~~~~~

Number of similar (compiler,implementation) pairs: 4, namely:
CompilerImplementations
gcc -m64 -march=barcelona -O2 -fomit-frame-pointer ref
gcc -m64 -march=barcelona -O3 -fomit-frame-pointer ref
gcc -m64 -march=barcelona -O -fomit-frame-pointer ref
gcc -m64 -march=barcelona -Os -fomit-frame-pointer ref

Compiler output

Implementation: crypto_dh/ed521gs/ref
Compiler: icc
dh.c: dh.c(771): warning #266: function "randombytes" declared implicitly
dh.c: randombytes(sk,PANES-1);
dh.c: ^
dh.c:

Number of similar (compiler,implementation) pairs: 4, namely:
CompilerImplementations
icc ref
icc -no-vec ref
icc -xCORE-AVX2 -O2 -fomit-frame-pointer ref
icc -xCORE-AVX2 -O3 -fomit-frame-pointer ref