Implementation notes: armeabi, tonido, crypto_dh/nist521gs

Computer: tonido
Architecture: armeabi
CPU ID: unknown CPU ID
SUPERCOP version: 20170718
Operation: crypto_dh
Primitive: nist521gs

Compiler output

Implementation: crypto_dh/nist521gs/ref
Compiler: gcc -funroll-loops -march=native -mtune=xscale -O2
dh.c: dh.c:13:9: error: '__int128' is not supported on this target
dh.c: typedef __int128 type128;
dh.c: ^~~~~~~~
dh.c: dh.c: In function 'gsqr':
dh.c: dh.c:278:109: warning: right shift count >= width of type [-Wshift-count-overflow]
dh.c: t2=4*((type128)x[1]*x[8]+(type128)x[2]*x[7]+(type128)x[3]*x[6]+(type128)x[4]*x[5])+(type128)x[0]*x[0]+2*(t1>>58);
dh.c: ^~
dh.c: dh.c:280:111: warning: right shift count >= width of type [-Wshift-count-overflow]
dh.c: t1=4*((type128)x[2]*x[8]+(type128)x[3]*x[7]+(type128)x[4]*x[6])+2*((type128)x[0]*x[1]+(type128)x[5]*x[5])+(t2>>58);
dh.c: ^~
dh.c: ...
dh.c: dh.c:359:73: warning: right shift count >= width of type [-Wshift-count-overflow]
dh.c: -(type128)(x[2]-x[5])*(y[2]-y[5])-(type128)(x[3]-x[4])*(y[3]-y[4])+(t3>>58);
dh.c: ^~
dh.c: dh.c:362:19: warning: right shift count >= width of type [-Wshift-count-overflow]
dh.c: st1+=((type64)(t2>>58));
dh.c: ^~
dh.c: dh.c: In function 'crypto_dh_nist521gs_ref_keypair':
dh.c: dh.c:831:2: warning: implicit declaration of function 'randombytes' [-Wimplicit-function-declaration]
dh.c: randombytes(sk,PANES-1);
dh.c: ^~~~~~~~~~~
Number of similar (compiler,implementation) pairs: 6, namely:
CompilerImplementations
gcc -funroll-loops -march=native -mtune=xscale -O2 ref
gcc -funroll-loops -march=native -mtune=xscale -O3 ref
gcc -funroll-loops -march=native -mtune=xscale -Os ref
gcc -march=native -mtune=xscale -O2 ref
gcc -march=native -mtune=xscale -O3 ref
gcc -march=native -mtune=xscale -Os ref