Compiler.h

/* Compiler.h : Compiler specific defines and pragmas
2024-01-22 : Igor Pavlov : Public domain */

#ifndef ZIP7_INC_COMPILER_H
#define ZIP7_INC_COMPILER_H

#if defined(__clang__)
# define Z7_CLANG_VERSION  (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
#endif
#if defined(__clang__) && defined(__apple_build_version__)
# define Z7_APPLE_CLANG_VERSION   Z7_CLANG_VERSION
#elif defined(__clang__)
# define Z7_LLVM_CLANG_VERSION    Z7_CLANG_VERSION
#elif defined(__GNUC__)
# define Z7_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#endif

#ifdef _MSC_VER
#if !defined(__clang__) && !defined(__GNUC__)
#define Z7_MSC_VER_ORIGINAL _MSC_VER
#endif
#endif

#if defined(__MINGW32__) || defined(__MINGW64__)
#define Z7_MINGW
#endif

#if defined(__LCC__) && (defined(__MCST__) || defined(__e2k__))
#define Z7_MCST_LCC
#define Z7_MCST_LCC_VERSION (__LCC__ * 100 + __LCC_MINOR__)
#endif

/*
#if defined(__AVX2__) \
    || defined(Z7_GCC_VERSION) && (Z7_GCC_VERSION >= 40900) \
    || defined(Z7_APPLE_CLANG_VERSION) && (Z7_APPLE_CLANG_VERSION >= 40600) \
    || defined(Z7_LLVM_CLANG_VERSION) && (Z7_LLVM_CLANG_VERSION >= 30100) \
    || defined(Z7_MSC_VER_ORIGINAL) && (Z7_MSC_VER_ORIGINAL >= 1800) \
    || defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 1400)
    #define Z7_COMPILER_AVX2_SUPPORTED
  #endif
#endif
*/

// #pragma GCC diagnostic ignored "-Wunknown-pragmas"

#ifdef __clang__
// padding size of '' with 4 bytes to alignment boundary
#pragma GCC diagnostic ignored "-Wpadded"

#if defined(Z7_LLVM_CLANG_VERSION) && (__clang_major__ == 13) \
  && defined(__FreeBSD__)
// freebsd:
#pragma GCC diagnostic ignored "-Wexcess-padding"
#endif

#if __clang_major__ >= 16
#pragma GCC diagnostic ignored "-Wunsafe-buffer-usage"
#endif

#if __clang_major__ == 13
#if defined(__SIZEOF_POINTER__) && (__SIZEOF_POINTER__ == 16)
// cheri
#pragma GCC diagnostic ignored "-Wcapability-to-integer-cast"
#endif
#endif

#if __clang_major__ == 13
  // for <arm_neon.h>
  #pragma GCC diagnostic ignored "-Wreserved-identifier"
#endif

#endif // __clang__

#if defined(_WIN32) && defined(__clang__) && __clang_major__ >= 16
// #pragma GCC diagnostic ignored "-Wcast-function-type-strict"
#define Z7_DIAGNOSTIC_IGNORE_CAST_FUNCTION \
  _Pragma("GCC diagnostic ignored \"-Wcast-function-type-strict\"")
#else
#define Z7_DIAGNOSTIC_IGNORE_CAST_FUNCTION
#endif

typedef void (*Z7_void_Function)(void);
#if defined(__clang__) || defined(__GNUC__)
#define Z7_CAST_FUNC_C  (Z7_void_Function)
#elif defined(_MSC_VER) && _MSC_VER > 1920
#define Z7_CAST_FUNC_C  (void *)
// #pragma warning(disable : 4191) // 'type cast': unsafe conversion from 'FARPROC' to 'void (__cdecl *)()'
#else
#define Z7_CAST_FUNC_C
#endif
/*
#if (defined(__GNUC__) && (__GNUC__ >= 8)) || defined(__clang__)
  // #pragma GCC diagnostic ignored "-Wcast-function-type"
#endif
*/
#ifdef __GNUC__
#if defined(Z7_GCC_VERSION) && (Z7_GCC_VERSION >= 40000) && (Z7_GCC_VERSION < 70000)
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
#endif
#endif


#ifdef _MSC_VER

  #ifdef UNDER_CE
    #define RPC_NO_WINDOWS_H
    /* #pragma warning(disable : 4115) // '_RPC_ASYNC_STATE' : named type definition in parentheses */
    #pragma warning(disable : 4201) // nonstandard extension used : nameless struct/union
    #pragma warning(disable : 4214) // nonstandard extension used : bit field types other than int
  #endif

#if defined(_MSC_VER) && _MSC_VER >= 1800
#pragma warning(disable : 4464) // relative include path contains '..'
#endif

// == 1200 : -O1 : for __forceinline
// >= 1900 : -O1 : for printf
#pragma warning(disable : 4710) // function not inlined

#if _MSC_VER < 1900
// winnt.h: 'Int64ShllMod32'
#pragma warning(disable : 4514) // unreferenced inline function has been removed
#endif
    
#if _MSC_VER < 1300
// #pragma warning(disable : 4702) // unreachable code
// Bra.c : -O1:
#pragma warning(disable : 4714) // function marked as __forceinline not inlined
#endif

/*
#if _MSC_VER > 1400 && _MSC_VER <= 1900
// strcat: This function or variable may be unsafe
// sysinfoapi.h: kit10: GetVersion was declared deprecated
#pragma warning(disable : 4996)
#endif
*/

#if _MSC_VER > 1200
// -Wall warnings

#pragma warning(disable : 4711) // function selected for automatic inline expansion
#pragma warning(disable : 4820) // '2' bytes padding added after data member

#if _MSC_VER >= 1400 && _MSC_VER < 1920
// 1400: string.h: _DBG_MEMCPY_INLINE_
// 1600 - 191x : smmintrin.h __cplusplus'
// is not defined as a preprocessor macro, replacing with '0' for '#if/#elif'
#pragma warning(disable : 4668)

// 1400 - 1600 : WinDef.h : 'FARPROC' :
// 1900 - 191x : immintrin.h: _readfsbase_u32
// no function prototype given : converting '()' to '(void)'
#pragma warning(disable : 4255)
#endif

#if _MSC_VER >= 1914
// Compiler will insert Spectre mitigation for memory load if /Qspectre switch specified
#pragma warning(disable : 5045)
#endif

#endif // _MSC_VER > 1200
#endif // _MSC_VER


#if defined(__clang__) && (__clang_major__ >= 4)
  #define Z7_PRAGMA_OPT_DISABLE_LOOP_UNROLL_VECTORIZE \
    _Pragma("clang loop unroll(disable)") \
    _Pragma("clang loop vectorize(disable)")
  #define Z7_ATTRIB_NO_VECTORIZE
#elif defined(__GNUC__) && (__GNUC__ >= 5) \
    && (!defined(Z7_MCST_LCC_VERSION) || (Z7_MCST_LCC_VERSION >= 12610))
  #define Z7_ATTRIB_NO_VECTORIZE __attribute__((optimize("no-tree-vectorize")))
  // __attribute__((optimize("no-unroll-loops")));
  #define Z7_PRAGMA_OPT_DISABLE_LOOP_UNROLL_VECTORIZE
#elif defined(_MSC_VER) && (_MSC_VER >= 1920)
  #define Z7_PRAGMA_OPT_DISABLE_LOOP_UNROLL_VECTORIZE \
    _Pragma("loop( no_vector )")
  #define Z7_ATTRIB_NO_VECTORIZE
#else
  #define Z7_PRAGMA_OPT_DISABLE_LOOP_UNROLL_VECTORIZE
  #define Z7_ATTRIB_NO_VECTORIZE
#endif

#if defined(MY_CPU_X86_OR_AMD64) && ( \
       defined(__clang__) && (__clang_major__ >= 4) \
    || defined(__GNUC__) && (__GNUC__ >= 5))
  #define Z7_ATTRIB_NO_SSE  __attribute__((__target__("no-sse")))
#else
  #define Z7_ATTRIB_NO_SSE
#endif

#define Z7_ATTRIB_NO_VECTOR \
  Z7_ATTRIB_NO_VECTORIZE \
  Z7_ATTRIB_NO_SSE


#if defined(__clang__) && (__clang_major__ >= 8) \
  || defined(__GNUC__) && (__GNUC__ >= 1000) \
  /* || defined(_MSC_VER) && (_MSC_VER >= 1920) */
  // GCC is not good for __builtin_expect()
  #define Z7_LIKELY(x)   (__builtin_expect((x), 1))
  #define Z7_UNLIKELY(x) (__builtin_expect((x), 0))
  // #define Z7_unlikely [[unlikely]]
  // #define Z7_likely [[likely]]
#else
  #define Z7_LIKELY(x)   (x)
  #define Z7_UNLIKELY(x) (x)
  // #define Z7_likely
#endif


#if (defined(Z7_CLANG_VERSION) && (Z7_CLANG_VERSION >= 30600))

#if (Z7_CLANG_VERSION < 130000)
#define Z7_DIAGNOSTIC_IGNORE_BEGIN_RESERVED_MACRO_IDENTIFIER \
  _Pragma("GCC diagnostic push") \
  _Pragma("GCC diagnostic ignored \"-Wreserved-id-macro\"")
#else
#define Z7_DIAGNOSTIC_IGNORE_BEGIN_RESERVED_MACRO_IDENTIFIER \
  _Pragma("GCC diagnostic push") \
  _Pragma("GCC diagnostic ignored \"-Wreserved-macro-identifier\"")
#endif

#define Z7_DIAGNOSTIC_IGNORE_END_RESERVED_MACRO_IDENTIFIER \
  _Pragma("GCC diagnostic pop")
#else
#define Z7_DIAGNOSTIC_IGNORE_BEGIN_RESERVED_MACRO_IDENTIFIER
#define Z7_DIAGNOSTIC_IGNORE_END_RESERVED_MACRO_IDENTIFIER
#endif

#define UNUSED_VAR(x) (void)x;
/* #define UNUSED_VAR(x) x=x; */

#endif