Implementation notes: amd64, comet, crypto_kem/hqc256round4

Computer: comet
Microarchitecture: amd64; Comet Lake (806ec)
Architecture: amd64
CPU ID: GenuineIntel-000806ec-bfebfbff
SUPERCOP version: 20240808
Operation: crypto_kem
Primitive: hqc256round4

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
2531541	72883 8 261216	95727 876 263008	`T:avx`	`clang_-march=native_-O3_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240709	20240625
2557539	61037 8 261216	83575 876 262944	`T:avx`	`clang_-march=native_-O2_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240709	20240625
2840457	88144 8 261280	109860 796 263040	`T:avx`	`gcc_-march=native_-mtune=native_-O3_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240709	20240625
2890879	42722 8 261216	62503 860 263008	`T:avx`	`clang_-march=native_-Os_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240709	20240625
3154311	47001 8 261216	66183 876 262944	`T:avx`	`clang_-march=native_-O_-fwrapv_-Qunused-arguments_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240709	20240625
3279553	44147 8 261280	63140 796 263040	`T:avx`	`gcc_-march=native_-mtune=native_-O_-fwrapv_-fPIC_-fPIE_-gdwarf-4_-Wall`	20240709	20240625

Test failure

error 111
crypto_kem_dec does not match k

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

Implementation	Compiler
`T:avx`	`gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (12.2.0)`
`T:avx`	`gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (12.2.0)`

Compiler output

gf.c: gf.c:91:19: error: '__builtin_ia32_pclmulqdq128' needs target feature pclmul
gf.c:     __m128i vab = _mm_clmulepi64_si128(va, vb, 0);
gf.c:                   ^
gf.c: /usr/lib/llvm-14/lib/clang/14.0.6/include/__wmmintrin_pclmul.h:45:13: note: expanded from macro '_mm_clmulepi64_si128'
gf.c:   ((__m128i)__builtin_ia32_pclmulqdq128((__v2di)(__m128i)(X), \
gf.c:             ^
gf.c: 1 error generated.

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

Implementation	Compiler
`T:avx`	`clang -mcpu=native -O3 -fwrapv -Qunused-arguments -fPIC -fPIE -gdwarf-4 -Wall (Debian_Clang_14.0.6)`

Compiler output

reed_muller.c: reed_muller.c: In function 'find_peaks':
reed_muller.c: reed_muller.c:247:37: warning: 'tmp' is used uninitialized [-Wuninitialized]
reed_muller.c:   247 |         result |= message_mask & ptr[i];
reed_muller.c:       |                                  ~~~^~~
reed_muller.c: reed_muller.c:208:13: note: 'tmp' was declared here
reed_muller.c:   208 |     __m256i tmp = (__m256i) {0ULL, 0ULL, 0ULL, 0ULL};
reed_muller.c:       |             ^~~

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

Implementation	Compiler
`T:avx`	`gcc -march=native -mtune=native -O2 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (12.2.0)`
`T:avx`	`gcc -march=native -mtune=native -O3 -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (12.2.0)`

Compiler output

reed_muller.c: reed_muller.c: In function 'find_peaks':
reed_muller.c: reed_muller.c:247:37: warning: 'tmp' is used uninitialized [-Wuninitialized]
reed_muller.c:   247 |         result |= message_mask & ptr[i];
reed_muller.c:       |                                  ~~~^~~
reed_muller.c: reed_muller.c:208:13: note: 'tmp' declared here
reed_muller.c:   208 |     __m256i tmp = (__m256i) {0ULL, 0ULL, 0ULL, 0ULL};
reed_muller.c:       |             ^~~

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

Implementation	Compiler
`T:avx`	`gcc -march=native -mtune=native -Os -fwrapv -fPIC -fPIE -gdwarf-4 -Wall (12.2.0)`