Implementation notes: amd64, scw1b63b1, crypto_decode/256x2

Computer: scw1b63b1
Architecture: amd64
CPU ID: GenuineIntel-000506f1-0f8bfbff
SUPERCOP version: 20191017
Operation: crypto_decode
Primitive: 256x2

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
990	130 0 0	11289 784 728	`ref`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20191214	20191017
1056	95 0 0	9931 800 800	`ref`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191214	20191017
1056	95 0 0	12116 808 800	`ref`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191214	20191017
1068	92 0 0	9779 800 800	`ref`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191214	20191017
1108	88 0 0	8979 776 728	`ref`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20191214	20191017
1110	102 0 0	10361 784 728	`ref`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20191214	20191017
1110	102 0 0	10361 784 728	`ref`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20191214	20191017
1120	102 0 0	11185 784 728	`ref`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20191214	20191017
1170	87 0 0	8847 784 768	`ref`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20191214	20191017

Compiler output

Implementation: avx
Security model: unknown
Compiler: clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

decode.c: decode.c:16:17: error: always_inline function '_mm256_set1_epi32' requires target feature 'xsave', but would be inlined into function 'crypto_decode_256x2_avx' that is compiled without support for 'xsave'
decode.c: __m256i x = _mm256_set1_epi32(*(int32_t *) s);
decode.c: ^
decode.c: decode.c:18:9: error: always_inline function '_mm256_shuffle_epi8' requires target feature 'xsave', but would be inlined into function 'crypto_decode_256x2_avx' that is compiled without support for 'xsave'
decode.c: x = _mm256_shuffle_epi8(x,COPY);
decode.c: ^
decode.c: decode.c:18:31: error: always_inline function '_mm256_set_epi64x' requires target feature 'xsave', but would be inlined into function 'crypto_decode_256x2_avx' that is compiled without support for 'xsave'
decode.c: x = _mm256_shuffle_epi8(x,COPY);
decode.c: ^
decode.c: decode.c:5:14: note: expanded from macro 'COPY'
decode.c: ...
decode.c: decode.c:22:10: error: always_inline function '_mm256_set1_epi64x' requires target feature 'xsave', but would be inlined into function 'crypto_decode_256x2_avx' that is compiled without support for 'xsave'
decode.c: x &= MASK2;
decode.c: ^
decode.c: decode.c:7:15: note: expanded from macro 'MASK2'
decode.c: #define MASK2 _mm256_set1_epi64x(0x0101010101010101)
decode.c: ^
decode.c: decode.c:23:5: error: always_inline function '_mm256_storeu_si256' requires target feature 'xsave', but would be inlined into function 'crypto_decode_256x2_avx' that is compiled without support for 'xsave'
decode.c: _mm256_storeu_si256(r,x);
decode.c: ^
decode.c: 9 errors generated.

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

Compiler	Implementations
clang -march=native -O2 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx
clang -march=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx
clang -march=native -O -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx
clang -march=native -Os -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx

Compiler output

Implementation: avx
Security model: unknown
Compiler: clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

decode.c: decode.c:16:17: error: always_inline function '_mm256_set1_epi32' requires target feature 'sse4.2', but would be inlined into function 'crypto_decode_256x2_avx' that is compiled without support for 'sse4.2'
decode.c: __m256i x = _mm256_set1_epi32(*(int32_t *) s);
decode.c: ^
decode.c: decode.c:18:9: error: always_inline function '_mm256_shuffle_epi8' requires target feature 'sse4.2', but would be inlined into function 'crypto_decode_256x2_avx' that is compiled without support for 'sse4.2'
decode.c: x = _mm256_shuffle_epi8(x,COPY);
decode.c: ^
decode.c: decode.c:18:31: error: always_inline function '_mm256_set_epi64x' requires target feature 'sse4.2', but would be inlined into function 'crypto_decode_256x2_avx' that is compiled without support for 'sse4.2'
decode.c: x = _mm256_shuffle_epi8(x,COPY);
decode.c: ^
decode.c: decode.c:5:14: note: expanded from macro 'COPY'
decode.c: ...
decode.c: decode.c:22:10: error: always_inline function '_mm256_set1_epi64x' requires target feature 'sse4.2', but would be inlined into function 'crypto_decode_256x2_avx' that is compiled without support for 'sse4.2'
decode.c: x &= MASK2;
decode.c: ^
decode.c: decode.c:7:15: note: expanded from macro 'MASK2'
decode.c: #define MASK2 _mm256_set1_epi64x(0x0101010101010101)
decode.c: ^
decode.c: decode.c:23:5: error: always_inline function '_mm256_storeu_si256' requires target feature 'sse4.2', but would be inlined into function 'crypto_decode_256x2_avx' that is compiled without support for 'sse4.2'
decode.c: _mm256_storeu_si256(r,x);
decode.c: ^
decode.c: 9 errors generated.

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

Compiler	Implementations
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx

Compiler output

Implementation: avx
Security model: unknown
Compiler: gcc -march=native -mtune=native -O2 -fomit-frame-pointer -fwrapv -fPIC -fPIE

decode.c: decode.c: In function ‘crypto_decode_256x2_avx’:
decode.c: decode.c:16:13: warning: AVX vector return without AVX enabled changes the ABI [-Wpsabi]
decode.c: __m256i x = _mm256_set1_epi32(*(int32_t *) s);
decode.c: ^
decode.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/6/include/immintrin.h:41:0,
decode.c: from decode.c:1:
decode.c: /usr/lib/gcc/x86_64-linux-gnu/6/include/avxintrin.h:900:1: error: inlining failed in call to always_inline ‘_mm256_storeu_si256’: target specific option mismatch
decode.c: _mm256_storeu_si256 (__m256i *__P, __m256i __A)
decode.c: ^~~~~~~~~~~~~~~~~~~
decode.c: decode.c:23:5: note: called from here
decode.c: ...
decode.c: x = _mm256_shuffle_epi8(x,COPY);
decode.c: ^~~~~~~~~~~~~~~~~~~~~~~~~~~
decode.c: In file included from /usr/lib/gcc/x86_64-linux-gnu/6/include/immintrin.h:41:0,
decode.c: from decode.c:1:
decode.c: /usr/lib/gcc/x86_64-linux-gnu/6/include/avxintrin.h:1293:1: error: inlining failed in call to always_inline ‘_mm256_set1_epi32’: target specific option mismatch
decode.c: _mm256_set1_epi32 (int __A)
decode.c: ^~~~~~~~~~~~~~~~~
decode.c: decode.c:16:13: note: called from here
decode.c: __m256i x = _mm256_set1_epi32(*(int32_t *) s);
decode.c: ^

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

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