Implementation notes: amd64, cherry, crypto_dh/nist521gs

Computer: cherry
Microarchitecture: amd64; Silvermont (406c4)
Architecture: amd64
CPU ID: GenuineIntel-000406c4-bfebfbff
SUPERCOP version: 20240625
Operation: crypto_dh
Primitive: nist521gs

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
17254996	10450 0 8	27610 788 1784	`T:ref`	`gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240628	20240625
20516981	22222 0 8	42602 796 1816	`T:ref`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240628	20240625
20589922	15280 0 8	34506 796 1816	`T:ref`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240628	20240625
20810650	27113 0 8	46184 820 1720	`T:ref`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240628	20240625
20821907	28889 0 8	49640 820 1720	`T:ref`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240628	20240625
20893854	13413 0 8	30854 812 1720	`T:ref`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240628	20240625
21058404	11801 0 8	29854 812 1720	`T:ref`	`clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240628	20240625
21453280	29105 0 8	49456 820 1720	`T:ref`	`clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240628	20240625
25828520	14224 0 8	32888 788 1816	`T:ref`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240628	20240625

Compiler output

dh.c: dh.c:792:8: warning: unused variable 'k' [-Wunused-variable]
dh.c:         int i,k,j,m;
dh.c:               ^
dh.c: dh.c:792:10: warning: unused variable 'j' [-Wunused-variable]
dh.c:         int i,k,j,m;
dh.c:                 ^
dh.c: dh.c:792:12: warning: unused variable 'm' [-Wunused-variable]
dh.c:         int i,k,j,m;
dh.c:                   ^
dh.c: dh.c:793:6: warning: unused variable 'tsc' [-Wunused-variable]
dh.c:         int tsc,tmc;
dh.c:             ^
dh.c: dh.c:793:10: warning: unused variable 'tmc' [-Wunused-variable]
dh.c:         int tsc,tmc;
dh.c:                 ^
dh.c: dh.c:794:25: warning: unused variable 'S' [-Wunused-variable]
dh.c:         ECp W[(1<<(WINDOW-1))],S[2],Q;
dh.c:                                ^
dh.c: dh.c:823:8: warning: unused variable 'x' [-Wunused-variable]
dh.c:         int i,x,w[PANES];
dh.c:               ^
dh.c: dh.c:876:8: warning: unused variable 'x' [-Wunused-variable]
dh.c:         int i,x,w[PANES];
dh.c:               ^
dh.c: dh.c:877:14: warning: unused variable 'sh' [-Wunused-variable]
dh.c: ...

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

Compiler output

dh.c: dh.c: In function 'mul':
dh.c: dh.c:794:25: warning: unused variable 'S' [-Wunused-variable]
dh.c:   794 |  ECp W[(1<<(WINDOW-1))],S[2],Q;
dh.c:       |                         ^
dh.c: dh.c:793:10: warning: unused variable 'tmc' [-Wunused-variable]
dh.c:   793 |  int tsc,tmc;
dh.c:       |          ^~~
dh.c: dh.c:793:6: warning: unused variable 'tsc' [-Wunused-variable]
dh.c:   793 |  int tsc,tmc;
dh.c:       |      ^~~
dh.c: dh.c:792:12: warning: unused variable 'm' [-Wunused-variable]
dh.c:   792 |  int i,k,j,m;
dh.c:       |            ^
dh.c: dh.c:792:10: warning: unused variable 'j' [-Wunused-variable]
dh.c:   792 |  int i,k,j,m;
dh.c:       |          ^
dh.c: dh.c:792:8: warning: unused variable 'k' [-Wunused-variable]
dh.c:   792 |  int i,k,j,m;
dh.c:       |        ^
dh.c: dh.c: In function 'crypto_dh_nist521gs_ref_timingleaks_keypair':
dh.c: dh.c:823:8: warning: unused variable 'x' [-Wunused-variable]
dh.c:   823 |  int i,x,w[PANES];
dh.c:       |        ^
dh.c: dh.c: In function 'crypto_dh_nist521gs_ref_timingleaks':
dh.c: dh.c:877:14: warning: unused variable 'sh' [-Wunused-variable]
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 (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)`