Implementation notes: amd64, hydra5, crypto_dh/ed521gs

Computer: hydra5
Microarchitecture: amd64; K10 32nm (300f10)
Architecture: amd64
CPU ID: AuthenticAMD-00300f10-178bfbff
SUPERCOP version: 20240625
Operation: crypto_dh
Primitive: ed521gs

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
6015479	23843 0 0	44719 820 1792	`T:ref`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240629	20240625
6187534	17957 0 0	37487 820 1792	`T:ref`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240629	20240625
6328415	11474 0 0	28879 812 1760	`T:ref`	`gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240629	20240625
6534826	23364 0 0	41336 868 1728	`T:ref`	`clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240629	20240625
6544925	30244 0 0	50400 868 1728	`T:ref`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240629	20240625
6545160	28100 0 0	47400 868 1728	`T:ref`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240629	20240625
6546163	30244 0 0	50400 868 1728	`T:ref`	`clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240629	20240625
6633997	15737 0 0	32938 860 1728	`T:ref`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240629	20240625
11965084	16565 0 0	35229 812 1792	`T:ref`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240629	20240625

Compiler output

dh.c: dh.c:740:27: warning: unused variable 'S' [-Wunused-variable]
dh.c:         ECp W[1+(1<<(WINDOW-1))],S[2],Q;
dh.c:                                  ^
dh.c: dh.c:741:8: warning: unused variable 'j' [-Wunused-variable]
dh.c:         int i,j,m;
dh.c:               ^
dh.c: dh.c:741:10: warning: unused variable 'm' [-Wunused-variable]
dh.c:         int i,j,m;
dh.c:                 ^
dh.c: dh.c:763:8: warning: unused variable 'x' [-Wunused-variable]
dh.c:         int i,x,w[PANES];
dh.c:               ^
dh.c: dh.c:814:8: warning: unused variable 'x' [-Wunused-variable]
dh.c:         int i,x,w[PANES];
dh.c:               ^
dh.c: dh.c:815:14: warning: unused variable 'sh' [-Wunused-variable]
dh.c:         signed char sh;
dh.c:                     ^
dh.c: dh.c:23:21: warning: unused variable 'bot52bits' [-Wunused-const-variable]
dh.c: static const type64 bot52bits = 0xfffffffffffff;
dh.c:                     ^
dh.c: 7 warnings generated.

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

Implementation	Compiler
`T:ref`	`clang -march=native -O2 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Ubuntu_Clang_14.0.0)`
`T:ref`	`clang -march=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Ubuntu_Clang_14.0.0)`
`T:ref`	`clang -march=native -O -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Ubuntu_Clang_14.0.0)`
`T:ref`	`clang -march=native -Os -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Ubuntu_Clang_14.0.0)`
`T:ref`	`clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Ubuntu_Clang_14.0.0)`

Compiler output

dh.c: dh.c: In function 'mul':
dh.c: dh.c:741:17: warning: unused variable 'm' [-Wunused-variable]
dh.c:   741 |         int i,j,m;
dh.c:       |                 ^
dh.c: dh.c:741:15: warning: unused variable 'j' [-Wunused-variable]
dh.c:   741 |         int i,j,m;
dh.c:       |               ^
dh.c: dh.c:740:34: warning: unused variable 'S' [-Wunused-variable]
dh.c:   740 |         ECp W[1+(1<<(WINDOW-1))],S[2],Q;
dh.c:       |                                  ^
dh.c: dh.c: In function 'crypto_dh_ed521gs_ref_timingleaks_keypair':
dh.c: dh.c:763:15: warning: unused variable 'x' [-Wunused-variable]
dh.c:   763 |         int i,x,w[PANES];
dh.c:       |               ^
dh.c: dh.c: In function 'crypto_dh_ed521gs_ref_timingleaks':
dh.c: dh.c:815:21: warning: unused variable 'sh' [-Wunused-variable]
dh.c:   815 |         signed char sh;
dh.c:       |                     ^~
dh.c: dh.c:814:15: warning: unused variable 'x' [-Wunused-variable]
dh.c:   814 |         int i,x,w[PANES];
dh.c:       |               ^
dh.c: At top level:
dh.c: dh.c:23:21: warning: 'bot52bits' defined but not used [-Wunused-const-variable=]
dh.c:    23 | static const type64 bot52bits = 0xfffffffffffff;
dh.c:       |                     ^~~~~~~~~

Number of similar (implementation,compiler) pairs: 4, namely:

Implementation	Compiler
`T:ref`	`gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (11.4.0)`
`T:ref`	`gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (11.4.0)`
`T:ref`	`gcc -march=native -mtune=native -O -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (11.4.0)`
`T:ref`	`gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (11.4.0)`