Implementation notes: amd64, whosthere, crypto_kem/ntruhps2048509

Computer: whosthere
Microarchitecture: amd64; KabyLake (806e9)
Architecture: amd64
CPU ID: GenuineIntel-000806e9-bfebfbff
SUPERCOP version: 20221122
Operation: crypto_kem
Primitive: ntruhps2048509

Time	Object size	Test size	Implementation	Compiler	Benchmark date	SUPERCOP version
64064	87419 25984 0	143488 26812 1720	`avx2`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20221019	20221005
64420	86073 25984 0	141632 26780 1752	`avx2`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20221019	20221005
64840	83273 25984 0	139216 26812 1720	`avx2`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20221019	20221005
76498	73440 25984 0	126134 26804 1720	`avx2`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20221019	20221005
76838	73356 25984 0	127144 26780 1752	`avx2`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20221019	20221005
80517	73039 25984 0	126230 26804 1720	`avx2`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20221019	20221005
84572	73477 25984 0	126720 26780 1752	`avx2`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20221019	20221005
88103	71913 25984 0	124136 26772 1720	`avx2`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20221019	20221005
1774030	22548 0 0	78216 820 1720	`ref`	`clang_-march=native_-O2_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20221019	20221005
1798036	30145 0 0	85944 820 1720	`ref`	`clang_-march=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20221019	20221005
1911269	24880 0 0	80184 820 1720	`ref`	`clang_-mcpu=native_-O3_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20221019	20221005
2189493	6252 0 0	58902 812 1720	`ref`	`clang_-march=native_-Os_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20221019	20221005
2606881	17378 0 0	72850 796 1752	`ref`	`gcc_-march=native_-mtune=native_-O3_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20221019	20221005
2611396	6859 0 0	60722 796 1752	`ref`	`gcc_-march=native_-mtune=native_-O2_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20221019	20221005
5209419	6076 0 0	58258 788 1720	`ref`	`gcc_-march=native_-mtune=native_-Os_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20221019	20221005
5235193	6580 0 0	59784 788 1752	`ref`	`gcc_-march=native_-mtune=native_-O_-fomit-frame-pointer_-fwrapv_-fPIC_-fPIE`	20221019	20221005
5321868	6919 0 0	59974 812 1720	`ref`	`clang_-march=native_-O_-fomit-frame-pointer_-fwrapv_-Qunused-arguments_-fPIC_-fPIE`	20221019	20221005

Compiler output

Implementation: avx2
Security model: constbranchindex
Compiler: clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE

poly_r2_inv.c: poly_r2_inv.c:19:14: error: always_inline function '_pext_u64' requires target feature 'bmi2', but would be inlined into function 'crypto_kem_ntruhps2048509_avx2_constbranchindex_poly_R2_tobytes' that is compiled without support for 'bmi2'
poly_r2_inv.c: out[i] = _pext_u64(coeff_pointer[2*i], 0x1000100010001);
poly_r2_inv.c: ^
poly_r2_inv.c: poly_r2_inv.c:20:15: error: always_inline function '_pext_u64' requires target feature 'bmi2', but would be inlined into function 'crypto_kem_ntruhps2048509_avx2_constbranchindex_poly_R2_tobytes' that is compiled without support for 'bmi2'
poly_r2_inv.c: out[i] |= _pext_u64(coeff_pointer[2*i+1], 0x1000100010001) << 4;
poly_r2_inv.c: ^
poly_r2_inv.c: poly_r2_inv.c:22:12: error: always_inline function '_pext_u64' requires target feature 'bmi2', but would be inlined into function 'crypto_kem_ntruhps2048509_avx2_constbranchindex_poly_R2_tobytes' that is compiled without support for 'bmi2'
poly_r2_inv.c: out[i] = _pext_u64(coeff_pointer[2*63], 0x1000100010001);
poly_r2_inv.c: ^
poly_r2_inv.c: poly_r2_inv.c:23:13: error: always_inline function '_pext_u64' requires target feature 'bmi2', but would be inlined into function 'crypto_kem_ntruhps2048509_avx2_constbranchindex_poly_R2_tobytes' that is compiled without support for 'bmi2'
poly_r2_inv.c: out[i] |= _pext_u64(coeff_pointer[2*63+1], 0x1) << 4;
poly_r2_inv.c: ^
poly_r2_inv.c: 4 errors generated.

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

Compiler	Implementations
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE	avx2