diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/int_lib.h b/contrib/llvm-project/compiler-rt/lib/builtins/int_lib.h index 4a972da23fcc..58c6debfd4bc 100644 --- a/contrib/llvm-project/compiler-rt/lib/builtins/int_lib.h +++ b/contrib/llvm-project/compiler-rt/lib/builtins/int_lib.h @@ -1,178 +1,155 @@ //===-- int_lib.h - configuration header for compiler-rt -----------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // This file is a configuration header for compiler-rt. // This file is not part of the interface of this library. // //===----------------------------------------------------------------------===// #ifndef INT_LIB_H #define INT_LIB_H // Assumption: Signed integral is 2's complement. // Assumption: Right shift of signed negative is arithmetic shift. // Assumption: Endianness is little or big (not mixed). // ABI macro definitions #if __ARM_EABI__ #if defined(COMPILER_RT_ARMHF_TARGET) || (!defined(__clang__) && \ defined(__GNUC__) && (__GNUC__ < 4 || __GNUC__ == 4 && __GNUC_MINOR__ < 5)) // The pcs attribute was introduced in GCC 4.5.0 #define COMPILER_RT_ABI #else #define COMPILER_RT_ABI __attribute__((__pcs__("aapcs"))) #endif #else #define COMPILER_RT_ABI #endif #define AEABI_RTABI __attribute__((__pcs__("aapcs"))) #if defined(_MSC_VER) && !defined(__clang__) #define ALWAYS_INLINE __forceinline #define NOINLINE __declspec(noinline) #define NORETURN __declspec(noreturn) #define UNUSED #else #define ALWAYS_INLINE __attribute__((always_inline)) #define NOINLINE __attribute__((noinline)) #define NORETURN __attribute__((noreturn)) #define UNUSED __attribute__((unused)) #endif #define STR(a) #a #define XSTR(a) STR(a) #define SYMBOL_NAME(name) XSTR(__USER_LABEL_PREFIX__) #name #if defined(__ELF__) || defined(__MINGW32__) || defined(__wasm__) || \ defined(_AIX) #define COMPILER_RT_ALIAS(name, aliasname) \ COMPILER_RT_ABI __typeof(name) aliasname __attribute__((__alias__(#name))); #elif defined(__APPLE__) #if defined(VISIBILITY_HIDDEN) #define COMPILER_RT_ALIAS_VISIBILITY(name) \ __asm__(".private_extern " SYMBOL_NAME(name)); #else #define COMPILER_RT_ALIAS_VISIBILITY(name) #endif #define COMPILER_RT_ALIAS(name, aliasname) \ __asm__(".globl " SYMBOL_NAME(aliasname)); \ COMPILER_RT_ALIAS_VISIBILITY(aliasname) \ __asm__(SYMBOL_NAME(aliasname) " = " SYMBOL_NAME(name)); \ COMPILER_RT_ABI __typeof(name) aliasname; #elif defined(_WIN32) #define COMPILER_RT_ALIAS(name, aliasname) #else #error Unsupported target #endif #if (defined(__FreeBSD__) || defined(__NetBSD__)) && (defined(_KERNEL) || defined(_STANDALONE)) // // Kernel and boot environment can't use normal headers, // so use the equivalent system headers. // #ifdef __FreeBSD__ #include #else #include #endif #include #include #else // Include the standard compiler builtin headers we use functionality from. #include #include #include #include #endif // Include the commonly used internal type definitions. #include "int_types.h" // Include internal utility function declarations. #include "int_util.h" -/* - * Workaround for LLVM bug 11663. Prevent endless recursion in - * __c?zdi2(), where calls to __builtin_c?z() are expanded to - * __c?zdi2() instead of __c?zsi2(). - * - * Instead of placing this workaround in c?zdi2.c, put it in this - * global header to prevent other C files from making the detour - * through __c?zdi2() as well. - * - * This problem has been observed on FreeBSD for sparc64 and - * mips64 with GCC 4.2.1, and for riscv with GCC 5.2.0. - * Presumably it's any version of GCC, and targeting an arch that - * does not have dedicated bit counting instructions. - */ -#if defined(__FreeBSD__) && (defined(__sparc64__) || \ - defined(__mips_n32) || defined(__mips_n64) || defined(__mips_o64) || \ - defined(__riscv)) -si_int __clzsi2(si_int); -si_int __ctzsi2(si_int); -#define __builtin_clz __clzsi2 -#define __builtin_ctz __ctzsi2 -#endif /* FreeBSD && (sparc64 || mips_n32 || mips_n64 || mips_o64 || riscv) */ - COMPILER_RT_ABI int __paritysi2(si_int a); COMPILER_RT_ABI int __paritydi2(di_int a); COMPILER_RT_ABI di_int __divdi3(di_int a, di_int b); COMPILER_RT_ABI si_int __divsi3(si_int a, si_int b); COMPILER_RT_ABI su_int __udivsi3(su_int n, su_int d); COMPILER_RT_ABI su_int __udivmodsi4(su_int a, su_int b, su_int *rem); COMPILER_RT_ABI du_int __udivmoddi4(du_int a, du_int b, du_int *rem); #ifdef CRT_HAS_128BIT COMPILER_RT_ABI int __clzti2(ti_int a); COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem); #endif // Definitions for builtins unavailable on MSVC #if defined(_MSC_VER) && !defined(__clang__) #include int __inline __builtin_ctz(uint32_t value) { unsigned long trailing_zero = 0; if (_BitScanForward(&trailing_zero, value)) return trailing_zero; return 32; } int __inline __builtin_clz(uint32_t value) { unsigned long leading_zero = 0; if (_BitScanReverse(&leading_zero, value)) return 31 - leading_zero; return 32; } #if defined(_M_ARM) || defined(_M_X64) int __inline __builtin_clzll(uint64_t value) { unsigned long leading_zero = 0; if (_BitScanReverse64(&leading_zero, value)) return 63 - leading_zero; return 64; } #else int __inline __builtin_clzll(uint64_t value) { if (value == 0) return 64; uint32_t msh = (uint32_t)(value >> 32); uint32_t lsh = (uint32_t)(value & 0xFFFFFFFF); if (msh != 0) return __builtin_clz(msh); return 32 + __builtin_clz(lsh); } #endif #define __builtin_clzl __builtin_clzll #endif // defined(_MSC_VER) && !defined(__clang__) #endif // INT_LIB_H