Implementation notes: amd64, h3neo, crypto_aead/lacv1

Computer: h3neo
Microarchitecture: amd64; K10 45nm (100f63)
Architecture: amd64
CPU ID: AuthenticAMD-00100f63-078bfbff
SUPERCOP version: 20240625
Operation: crypto_aead
Primitive: lacv1

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
760375	7579 16 0	24020 876 1024	`T:ref`	`clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240704	20240625
776086	7765 16 0	22708 876 1024	`T:ref`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240704	20240625
782816	7797 16 0	23660 876 1024	`T:ref`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240704	20240625
3154941	3450 16 0	16766 868 1024	`T:ref`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240704	20240625
3254299	4827 16 0	18812 876 1024	`T:ref`	`clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240704	20240625
3673675	5232 16 0	20974 836 1088	`T:ref`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240704	20240625
3945959	4921 16 0	19797 828 1088	`T:ref`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240704	20240625
6983599	3880 16 0	17481 812 1056	`T:ref`	`gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240704	20240625

Compiler output

encrypt.c: encrypt.c: In function 'crypto_aead_lacv1_ref_timingleaks_encrypt':
encrypt.c: encrypt.c:25:28: warning: array subscript -5 is outside array bounds of 'unsigned char[0]' [-Warray-bounds]
encrypt.c:    25 |          xpad[xpadlen - 5] = ((xlen * 8) >> 32) & 0xff;
encrypt.c:       |          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
encrypt.c: encrypt.c:425:41: note: referencing an object of size 0 allocated by 'malloc'
encrypt.c:   425 |                 mpad = (unsigned char *)malloc(mpadlen);        //the array to store padded message(mpad bytes)
encrypt.c:       |                                         ^~~~~~~~~~~~~~~
encrypt.c: encrypt.c:26:28: warning: array subscript -4 is outside array bounds of 'unsigned char[0]' [-Warray-bounds]
encrypt.c:    26 |          xpad[xpadlen - 4] = ((xlen * 8) >> 24) & 0xff;
encrypt.c:       |          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
encrypt.c: encrypt.c:425:41: note: referencing an object of size 0 allocated by 'malloc'
encrypt.c:   425 |                 mpad = (unsigned char *)malloc(mpadlen);        //the array to store padded message(mpad bytes)
encrypt.c:       |                                         ^~~~~~~~~~~~~~~
encrypt.c: encrypt.c:27:28: warning: array subscript -3 is outside array bounds of 'unsigned char[0]' [-Warray-bounds]
encrypt.c:    27 |          xpad[xpadlen - 3] = ((xlen * 8) >> 16) & 0xff;
encrypt.c:       |          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
encrypt.c: encrypt.c:425:41: note: referencing an object of size 0 allocated by 'malloc'
encrypt.c:   425 |                 mpad = (unsigned char *)malloc(mpadlen);        //the array to store padded message(mpad bytes)
encrypt.c:       |                                         ^~~~~~~~~~~~~~~
encrypt.c: encrypt.c:28:28: warning: array subscript -2 is outside array bounds of 'unsigned char[0]' [-Warray-bounds]
encrypt.c:    28 |          xpad[xpadlen - 2] = ((xlen * 8) >>  8) & 0xff;
encrypt.c:       |          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
encrypt.c: encrypt.c:425:41: note: referencing an object of size 0 allocated by 'malloc'
encrypt.c:   425 |                 mpad = (unsigned char *)malloc(mpadlen);        //the array to store padded message(mpad bytes)
encrypt.c:       |                                         ^~~~~~~~~~~~~~~
encrypt.c: ...

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

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

Compiler output

encrypt.c: encrypt.c: In function 'crypto_aead_lacv1_ref_timingleaks_decrypt':
encrypt.c: encrypt.c:619:57: warning: 'mpad' may be used uninitialized in this function [-Wmaybe-uninitialized]
encrypt.c:   619 |                                 datastate[j + 2] ^= mpad[i + j];
encrypt.c:       |                                                         ^

Number of similar (implementation,compiler) pairs: 2, namely:

Implementation	Compiler
`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)`