Implementation notes: x86, mace, crypto_sign/rainbow5640

Computer: mace
Architecture: x86
CPU ID: AuthenticAMD-00040fb2-178bfbff
SUPERCOP version: 20170105
Operation: crypto_sign
Primitive: rainbow5640

Compiler output

Implementation: crypto_sign/rainbow5640/ref
Compiler: g++ -m32 -O2 -fomit-frame-pointer
rainbow_w-test.cpp: In file included from rainbow_w-test.cpp:6:0:
rainbow_w-test.cpp: rainbow_w.h: In static member function 'static void rainbow_w_56_40<p>::gen_key(uint8*, uint8*) [with unsigned int p = 31u; uint8 = unsigned char]':
rainbow_w-test.cpp: rainbow_w.h:354:34: warning: SSE vector return without SSE enabled changes the ABI [-Wpsabi]
rainbow_w-test.cpp: __m128i mask = _mm_set1_epi16(31);
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: In file included from gfv.h:3:0,
rainbow_w-test.cpp: from bqas.h:5,
rainbow_w-test.cpp: from rainbow_w.h:7,
rainbow_w-test.cpp: from rainbow_w-test.cpp:6:
rainbow_w-test.cpp: /usr/lib/gcc/x86_64-linux-gnu/5/include/emmintrin.h: In function 'void transpose8(__m128i*, const __m128i*)':
rainbow_w-test.cpp: /usr/lib/gcc/x86_64-linux-gnu/5/include/emmintrin.h:969:1: error: inlining failed in call to always_inline '__m128i _mm_unpackhi_epi16(__m128i, __m128i)': target specific option mismatch
rainbow_w-test.cpp: _mm_unpackhi_epi16 (__m128i __A, __m128i __B)
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: In file included from bqas.h:79:0,
rainbow_w-test.cpp: from rainbow_w.h:7,
rainbow_w-test.cpp: from rainbow_w-test.cpp:6:
rainbow_w-test.cpp: transpose8.h:34:32: error: called from here
rainbow_w-test.cpp: h = _mm_unpackhi_epi16(g1, h1);\
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: transpose8.h:39:2: note: in expansion of macro '_transpose8'
rainbow_w-test.cpp: _transpose8(a,b,c,d,e,f,g,h);
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: In file included from gfv.h:3:0,
rainbow_w-test.cpp: from bqas.h:5,
rainbow_w-test.cpp: from rainbow_w.h:7,
rainbow_w-test.cpp: ...

Number of similar (compiler,implementation) pairs: 44, namely:
CompilerImplementations
g++ -m32 -O2 -fomit-frame-pointer ref
g++ -m32 -O3 -fomit-frame-pointer ref
g++ -m32 -O -fomit-frame-pointer ref
g++ -m32 -Os -fomit-frame-pointer ref
g++ -m32 -march=athlon -O2 -fomit-frame-pointer ref
g++ -m32 -march=athlon -O3 -fomit-frame-pointer ref
g++ -m32 -march=athlon -O -fomit-frame-pointer ref
g++ -m32 -march=athlon -Os -fomit-frame-pointer ref
g++ -m32 -march=i386 -O2 -fomit-frame-pointer ref
g++ -m32 -march=i386 -O3 -fomit-frame-pointer ref
g++ -m32 -march=i386 -O -fomit-frame-pointer ref
g++ -m32 -march=i386 -Os -fomit-frame-pointer ref
g++ -m32 -march=i486 -O2 -fomit-frame-pointer ref
g++ -m32 -march=i486 -O3 -fomit-frame-pointer ref
g++ -m32 -march=i486 -O -fomit-frame-pointer ref
g++ -m32 -march=i486 -Os -fomit-frame-pointer ref
g++ -m32 -march=k6-2 -O2 -fomit-frame-pointer ref
g++ -m32 -march=k6-2 -O3 -fomit-frame-pointer ref
g++ -m32 -march=k6-2 -O -fomit-frame-pointer ref
g++ -m32 -march=k6-2 -Os -fomit-frame-pointer ref
g++ -m32 -march=k6-3 -O2 -fomit-frame-pointer ref
g++ -m32 -march=k6-3 -O3 -fomit-frame-pointer ref
g++ -m32 -march=k6-3 -O -fomit-frame-pointer ref
g++ -m32 -march=k6-3 -Os -fomit-frame-pointer ref
g++ -m32 -march=k6 -O2 -fomit-frame-pointer ref
g++ -m32 -march=k6 -O3 -fomit-frame-pointer ref
g++ -m32 -march=k6 -O -fomit-frame-pointer ref
g++ -m32 -march=k6 -Os -fomit-frame-pointer ref
g++ -m32 -march=pentium-mmx -O2 -fomit-frame-pointer ref
g++ -m32 -march=pentium-mmx -O3 -fomit-frame-pointer ref
g++ -m32 -march=pentium-mmx -O -fomit-frame-pointer ref
g++ -m32 -march=pentium-mmx -Os -fomit-frame-pointer ref
g++ -m32 -march=pentium2 -O2 -fomit-frame-pointer ref
g++ -m32 -march=pentium2 -O3 -fomit-frame-pointer ref
g++ -m32 -march=pentium2 -O -fomit-frame-pointer ref
g++ -m32 -march=pentium2 -Os -fomit-frame-pointer ref
g++ -m32 -march=pentium -O2 -fomit-frame-pointer ref
g++ -m32 -march=pentium -O3 -fomit-frame-pointer ref
g++ -m32 -march=pentium -O -fomit-frame-pointer ref
g++ -m32 -march=pentium -Os -fomit-frame-pointer ref
g++ -m32 -march=pentiumpro -O2 -fomit-frame-pointer ref
g++ -m32 -march=pentiumpro -O3 -fomit-frame-pointer ref
g++ -m32 -march=pentiumpro -O -fomit-frame-pointer ref
g++ -m32 -march=pentiumpro -Os -fomit-frame-pointer ref

Compiler output

Implementation: crypto_sign/rainbow5640/ref
Compiler: g++ -m32 -march=barcelona -O2 -fomit-frame-pointer
rainbow_w-test.cpp: In file included from rainbow_w-test.cpp:7:0:
rainbow_w-test.cpp: conversion.h: In function 'int verification(const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int)':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ...
rainbow_w-test.cpp: In file included from rainbow_w-test.cpp:7:0:
rainbow_w-test.cpp: conversion.h: In function 'int verification(const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int)':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ...

Number of similar (compiler,implementation) pairs: 2, namely:
CompilerImplementations
g++ -m32 -march=barcelona -O2 -fomit-frame-pointer ref
g++ -m32 -march=barcelona -O3 -fomit-frame-pointer ref

Compiler output

Implementation: crypto_sign/rainbow5640/ref
Compiler: g++ -m32 -march=barcelona -O -fomit-frame-pointer
rainbow_w-test.cpp: In file included from rainbow_w-test.cpp:7:0:
rainbow_w-test.cpp: conversion.h: In function 'void convert_to_31(uint8*, uint64) [with unsigned int num_gf31 = 13u; uint8 = unsigned char; uint64 = long long unsigned int]':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h: In function 'void convert_to_31(uint8*, uint64) [with unsigned int num_gf31 = 12u; uint8 = unsigned char; uint64 = long long unsigned int]':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h: In function 'int verification(const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int)':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: In file included from rainbow_w-test.cpp:7:0:
rainbow_w-test.cpp: conversion.h: In function 'void convert_to_31(uint8*, uint64) [with unsigned int num_gf31 = 13u; uint8 = unsigned char; uint64 = long long unsigned int]':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h: In function 'void convert_to_31(uint8*, uint64) [with unsigned int num_gf31 = 12u; uint8 = unsigned char; uint64 = long long unsigned int]':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h: In function 'int verification(const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int)':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^

Number of similar (compiler,implementation) pairs: 2, namely:
CompilerImplementations
g++ -m32 -march=barcelona -O -fomit-frame-pointer ref
g++ -m32 -march=barcelona -Os -fomit-frame-pointer ref

Compiler output

Implementation: crypto_sign/rainbow5640/ref
Compiler: g++ -m32 -march=core-avx-i -O2 -fomit-frame-pointer
rainbow_w-test.cpp: In file included from rainbow_w-test.cpp:7:0:
rainbow_w-test.cpp: conversion.h: In function 'int verification(const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int)':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ...

Number of similar (compiler,implementation) pairs: 20, namely:
CompilerImplementations
g++ -m32 -march=core-avx-i -O2 -fomit-frame-pointer ref
g++ -m32 -march=core-avx2 -O2 -fomit-frame-pointer ref
g++ -m32 -march=core2 -O2 -fomit-frame-pointer ref
g++ -m32 -march=core2 -O3 -fomit-frame-pointer ref
g++ -m32 -march=core2 -msse4.1 -O2 -fomit-frame-pointer ref
g++ -m32 -march=core2 -msse4 -O2 -fomit-frame-pointer ref
g++ -m32 -march=corei7-avx -O2 -fomit-frame-pointer ref
g++ -m32 -march=corei7 -O2 -fomit-frame-pointer ref
g++ -m32 -march=k8 -O2 -fomit-frame-pointer ref
g++ -m32 -march=k8 -O3 -fomit-frame-pointer ref
g++ -m32 -march=native -mtune=native -O2 -fomit-frame-pointer ref
g++ -m32 -march=native -mtune=native -O3 -fomit-frame-pointer ref
g++ -m32 -march=nocona -O2 -fomit-frame-pointer ref
g++ -m32 -march=nocona -O3 -fomit-frame-pointer ref
g++ -m32 -march=pentium-m -O2 -fomit-frame-pointer ref
g++ -m32 -march=pentium-m -O3 -fomit-frame-pointer ref
g++ -m32 -march=pentium4 -O2 -fomit-frame-pointer ref
g++ -m32 -march=pentium4 -O3 -fomit-frame-pointer ref
g++ -m32 -march=prescott -O2 -fomit-frame-pointer ref
g++ -m32 -march=prescott -O3 -fomit-frame-pointer ref

Compiler output

Implementation: crypto_sign/rainbow5640/ref
Compiler: g++ -m32 -march=core-avx-i -O -fomit-frame-pointer
rainbow_w-test.cpp: In file included from rainbow_w-test.cpp:7:0:
rainbow_w-test.cpp: conversion.h: In function 'void convert_to_31(uint8*, uint64) [with unsigned int num_gf31 = 13u; uint8 = unsigned char; uint64 = long long unsigned int]':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h: In function 'void convert_to_31(uint8*, uint64) [with unsigned int num_gf31 = 12u; uint8 = unsigned char; uint64 = long long unsigned int]':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h: In function 'int verification(const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int, const unsigned char*, long long unsigned int)':
rainbow_w-test.cpp: conversion.h:41:26: error: unknown register name 'r8' in 'asm'
rainbow_w-test.cpp: :"rax","r8","rdx","rdi" );
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: conversion.h:48:3: note: in expansion of macro 'div31_r'
rainbow_w-test.cpp: div31_r( a , tmp );
rainbow_w-test.cpp: ^

Number of similar (compiler,implementation) pairs: 26, namely:
CompilerImplementations
g++ -m32 -march=core-avx-i -O -fomit-frame-pointer ref
g++ -m32 -march=core-avx-i -Os -fomit-frame-pointer ref
g++ -m32 -march=core-avx2 -O -fomit-frame-pointer ref
g++ -m32 -march=core-avx2 -Os -fomit-frame-pointer ref
g++ -m32 -march=core2 -O -fomit-frame-pointer ref
g++ -m32 -march=core2 -Os -fomit-frame-pointer ref
g++ -m32 -march=core2 -msse4.1 -O -fomit-frame-pointer ref
g++ -m32 -march=core2 -msse4.1 -Os -fomit-frame-pointer ref
g++ -m32 -march=core2 -msse4 -O -fomit-frame-pointer ref
g++ -m32 -march=core2 -msse4 -Os -fomit-frame-pointer ref
g++ -m32 -march=corei7-avx -O -fomit-frame-pointer ref
g++ -m32 -march=corei7-avx -Os -fomit-frame-pointer ref
g++ -m32 -march=corei7 -O -fomit-frame-pointer ref
g++ -m32 -march=corei7 -Os -fomit-frame-pointer ref
g++ -m32 -march=k8 -O -fomit-frame-pointer ref
g++ -m32 -march=k8 -Os -fomit-frame-pointer ref
g++ -m32 -march=native -mtune=native -O -fomit-frame-pointer ref
g++ -m32 -march=native -mtune=native -Os -fomit-frame-pointer ref
g++ -m32 -march=nocona -O -fomit-frame-pointer ref
g++ -m32 -march=nocona -Os -fomit-frame-pointer ref
g++ -m32 -march=pentium-m -O -fomit-frame-pointer ref
g++ -m32 -march=pentium-m -Os -fomit-frame-pointer ref
g++ -m32 -march=pentium4 -O -fomit-frame-pointer ref
g++ -m32 -march=pentium4 -Os -fomit-frame-pointer ref
g++ -m32 -march=prescott -O -fomit-frame-pointer ref
g++ -m32 -march=prescott -Os -fomit-frame-pointer ref

Compiler output

Implementation: crypto_sign/rainbow5640/ref
Compiler: g++ -m32 -march=pentium3 -O2 -fomit-frame-pointer
rainbow_w-test.cpp: In file included from gfv.h:3:0,
rainbow_w-test.cpp: from bqas.h:5,
rainbow_w-test.cpp: from rainbow_w.h:7,
rainbow_w-test.cpp: from rainbow_w-test.cpp:6:
rainbow_w-test.cpp: /usr/lib/gcc/x86_64-linux-gnu/5/include/emmintrin.h: In function 'void transpose8(__m128i*, const __m128i*)':
rainbow_w-test.cpp: /usr/lib/gcc/x86_64-linux-gnu/5/include/emmintrin.h:969:1: error: inlining failed in call to always_inline '__m128i _mm_unpackhi_epi16(__m128i, __m128i)': target specific option mismatch
rainbow_w-test.cpp: _mm_unpackhi_epi16 (__m128i __A, __m128i __B)
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: In file included from bqas.h:79:0,
rainbow_w-test.cpp: from rainbow_w.h:7,
rainbow_w-test.cpp: from rainbow_w-test.cpp:6:
rainbow_w-test.cpp: transpose8.h:34:32: error: called from here
rainbow_w-test.cpp: h = _mm_unpackhi_epi16(g1, h1);\
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: transpose8.h:39:2: note: in expansion of macro '_transpose8'
rainbow_w-test.cpp: _transpose8(a,b,c,d,e,f,g,h);
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: In file included from gfv.h:3:0,
rainbow_w-test.cpp: from bqas.h:5,
rainbow_w-test.cpp: from rainbow_w.h:7,
rainbow_w-test.cpp: from rainbow_w-test.cpp:6:
rainbow_w-test.cpp: /usr/lib/gcc/x86_64-linux-gnu/5/include/emmintrin.h:993:1: error: inlining failed in call to always_inline '__m128i _mm_unpacklo_epi16(__m128i, __m128i)': target specific option mismatch
rainbow_w-test.cpp: _mm_unpacklo_epi16 (__m128i __A, __m128i __B)
rainbow_w-test.cpp: ^
rainbow_w-test.cpp: In file included from bqas.h:79:0,
rainbow_w-test.cpp: ...

Number of similar (compiler,implementation) pairs: 4, namely:
CompilerImplementations
g++ -m32 -march=pentium3 -O2 -fomit-frame-pointer ref
g++ -m32 -march=pentium3 -O3 -fomit-frame-pointer ref
g++ -m32 -march=pentium3 -O -fomit-frame-pointer ref
g++ -m32 -march=pentium3 -Os -fomit-frame-pointer ref