Implementation notes: amd64, hydra7, crypto_sign/sflashv2

Computer: hydra7
Microarchitecture: amd64; Sandy Bridge+AES (206a7)
Architecture: amd64
CPU ID: GenuineIntel-000206a7-bfebfbff
SUPERCOP version: 20240425
Operation: crypto_sign
Primitive: sflashv2

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
298782	32681 0 0	51162 868 1760	`T:ref`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240426	20240425
319189	33331 0 0	53042 868 1760	`T:ref`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240426	20240425
364330	31652 0 0	49722 868 1760	`T:ref`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240426	20240425
366812	28863 0 0	45834 860 1760	`T:ref`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20240426	20240425

Compiler output

Implementation: T:ref
Security model: timingleaks
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE

lib_flash.c: lib_flash.c: In function 'Flash_load_public_key':
lib_flash.c: lib_flash.c:913:9: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result]
lib_flash.c: 913 | fread(key,1,19266,in);
lib_flash.c: | ^~~~~~~~~~~~~~~~~~~~~
lib_flash.c: lib_flash.c: In function 'Flash_load_private_key':
lib_flash.c: lib_flash.c:1019:9: warning: ignoring return value of 'fread' declared with attribute 'warn_unused_result' [-Wunused-result]
lib_flash.c: 1019 | fread(key,1,2823,in);
lib_flash.c: | ^~~~~~~~~~~~~~~~~~~~

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

Compiler	Implementations
gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE	T:ref
gcc -march=native -mtune=native -O3 -fomit-frame-pointer -fwrapv -fPIC -fPIE	T:ref
gcc -march=native -mtune=native -O -fomit-frame-pointer -fwrapv -fPIC -fPIE	T:ref
gcc -march=native -mtune=native -Os -fomit-frame-pointer -fwrapv -fPIC -fPIE	T:ref