Implementation notes: amd64, speed2supercop, crypto_aead/lacv1

Computer: speed2supercop
Microarchitecture: amd64; Haswell+AES (306c3)
Architecture: amd64
CPU ID: GenuineIntel-000306c3-1fc9cbf5
SUPERCOP version: 20240625
Operation: crypto_aead
Primitive: lacv1

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
522068	7785 16 0	25335 824 872	`T:ref`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240703	20240625
523288	7865 16 0	24023 824 856	`T:ref`	`clang_-mcpu=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240703	20240625
523400	7769 16 0	25127 824 872	`T:ref`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240703	20240625
573016	6045 16 0	21846 784 928	`T:ref`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240703	20240625
1549700	3624 16 0	17856 816 920	`T:ref`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240703	20240625
1829936	4352 16 0	18158 784 928	`T:ref`	`gcc_-march=native_-mtune=native_-O2_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240703	20240625
1910804	4965 16 0	18359 824 856	`T:ref`	`clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240703	20240625
2122936	4583 16 0	18085 776 928	`T:ref`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240703	20240625
3018616	3425 16 0	15721 760 896	`T:ref`	`gcc_-march=native_-mtune=native_-Os_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240703	20240625

Compiler output

encrypt.c: In function 'padding',
encrypt.c:     inlined from 'crypto_aead_lacv1_ref_timingleaks_encrypt' at encrypt.c:426:3:
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: In function 'crypto_aead_lacv1_ref_timingleaks_encrypt':
encrypt.c: encrypt.c:425:41: note: at offset -5 into 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: In function 'padding',
encrypt.c:     inlined from 'crypto_aead_lacv1_ref_timingleaks_encrypt' at encrypt.c:426:3:
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: In function 'crypto_aead_lacv1_ref_timingleaks_encrypt':
encrypt.c: encrypt.c:425:41: note: at offset -4 into 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: In function 'padding',
encrypt.c:     inlined from 'crypto_aead_lacv1_ref_timingleaks_encrypt' at encrypt.c:426:3:
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: In function 'crypto_aead_lacv1_ref_timingleaks_encrypt':
encrypt.c: encrypt.c:425:41: note: at offset -3 into object of size 0 allocated by 'malloc'
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 (13.3.0)`

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 [-Wmaybe-uninitialized]
encrypt.c:   619 |                                 datastate[j + 2] ^= mpad[i + j];
encrypt.c:       |                                                         ^
encrypt.c: encrypt.c:524:24: note: 'mpad' was declared here
encrypt.c:   524 |         unsigned char *mpad;
encrypt.c:       |                        ^~~~

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

Implementation	Compiler
`T:ref`	`gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (13.3.0)`