These built-in functions are available for LoongArch.
Data Type Description:
imm0_31, a compile-time constant in range 0 to 31;
imm0_16383, a compile-time constant in range 0 to 16383;
imm0_32767, a compile-time constant in range 0 to 32767;
imm_n2048_2047, a compile-time constant in range -2048 to 2047;
The intrinsics provided are listed below:
unsigned int __builtin_loongarch_movfcsr2gr (imm0_31)
void __builtin_loongarch_movgr2fcsr (imm0_31, unsigned int)
void __builtin_loongarch_cacop_d (imm0_31, unsigned long int, imm_n2048_2047)
unsigned int __builtin_loongarch_cpucfg (unsigned int)
void __builtin_loongarch_asrtle_d (long int, long int)
void __builtin_loongarch_asrtgt_d (long int, long int)
long int __builtin_loongarch_lddir_d (long int, imm0_31)
void __builtin_loongarch_ldpte_d (long int, imm0_31)
int __builtin_loongarch_crc_w_b_w (char, int)
int __builtin_loongarch_crc_w_h_w (short, int)
int __builtin_loongarch_crc_w_w_w (int, int)
int __builtin_loongarch_crc_w_d_w (long int, int)
int __builtin_loongarch_crcc_w_b_w (char, int)
int __builtin_loongarch_crcc_w_h_w (short, int)
int __builtin_loongarch_crcc_w_w_w (int, int)
int __builtin_loongarch_crcc_w_d_w (long int, int)
unsigned int __builtin_loongarch_csrrd_w (imm0_16383)
unsigned int __builtin_loongarch_csrwr_w (unsigned int, imm0_16383)
unsigned int __builtin_loongarch_csrxchg_w (unsigned int, unsigned int, imm0_16383)
unsigned long int __builtin_loongarch_csrrd_d (imm0_16383)
unsigned long int __builtin_loongarch_csrwr_d (unsigned long int, imm0_16383)
unsigned long int __builtin_loongarch_csrxchg_d (unsigned long int, unsigned long int, imm0_16383)
unsigned char __builtin_loongarch_iocsrrd_b (unsigned int)
unsigned short __builtin_loongarch_iocsrrd_h (unsigned int)
unsigned int __builtin_loongarch_iocsrrd_w (unsigned int)
unsigned long int __builtin_loongarch_iocsrrd_d (unsigned int)
void __builtin_loongarch_iocsrwr_b (unsigned char, unsigned int)
void __builtin_loongarch_iocsrwr_h (unsigned short, unsigned int)
void __builtin_loongarch_iocsrwr_w (unsigned int, unsigned int)
void __builtin_loongarch_iocsrwr_d (unsigned long int, unsigned int)
void __builtin_loongarch_dbar (imm0_32767)
void __builtin_loongarch_ibar (imm0_32767)
void __builtin_loongarch_syscall (imm0_32767)
void __builtin_loongarch_break (imm0_32767)
These instrisic functions are available by using -mfrecipe.
float __builtin_loongarch_frecipe_s (float);
double __builtin_loongarch_frecipe_d (double);
float __builtin_loongarch_frsqrte_s (float);
double __builtin_loongarch_frsqrte_d (double);
Note:Since the control register is divided into 32-bit and 64-bit, but the access instruction is not distinguished. So GCC renames the control instructions when implementing intrinsics.
Take the csrrd instruction as an example, built-in functions are implemented as follows:
__builtin_loongarch_csrrd_w // When reading the 32-bit control register use. __builtin_loongarch_csrrd_d // When reading the 64-bit control register use.
For the convenience of use, the built-in functions are encapsulated,
the encapsulated functions and __drdtime_t, __rdtime_t are
defined in the larchintrin.h. So if you call the following
function you need to include larchintrin.h.
typedef struct drdtime{
unsigned long dvalue;
unsigned long dtimeid;
} __drdtime_t;
typedef struct rdtime{
unsigned int value;
unsigned int timeid;
} __rdtime_t;
__drdtime_t __rdtime_d (void)
__rdtime_t __rdtimel_w (void)
__rdtime_t __rdtimeh_w (void)
unsigned int __movfcsr2gr (imm0_31)
void __movgr2fcsr (imm0_31, unsigned int)
void __cacop_d (imm0_31, unsigned long, imm_n2048_2047)
unsigned int __cpucfg (unsigned int)
void __asrtle_d (long int, long int)
void __asrtgt_d (long int, long int)
long int __lddir_d (long int, imm0_31)
void __ldpte_d (long int, imm0_31)
int __crc_w_b_w (char, int)
int __crc_w_h_w (short, int)
int __crc_w_w_w (int, int)
int __crc_w_d_w (long int, int)
int __crcc_w_b_w (char, int)
int __crcc_w_h_w (short, int)
int __crcc_w_w_w (int, int)
int __crcc_w_d_w (long int, int)
unsigned int __csrrd_w (imm0_16383)
unsigned int __csrwr_w (unsigned int, imm0_16383)
unsigned int __csrxchg_w (unsigned int, unsigned int, imm0_16383)
unsigned long __csrrd_d (imm0_16383)
unsigned long __csrwr_d (unsigned long, imm0_16383)
unsigned long __csrxchg_d (unsigned long, unsigned long, imm0_16383)
unsigned char __iocsrrd_b (unsigned int)
unsigned short __iocsrrd_h (unsigned int)
unsigned int __iocsrrd_w (unsigned int)
unsigned long __iocsrrd_d (unsigned int)
void __iocsrwr_b (unsigned char, unsigned int)
void __iocsrwr_h (unsigned short, unsigned int)
void __iocsrwr_w (unsigned int, unsigned int)
void __iocsrwr_d (unsigned long, unsigned int)
void __dbar (imm0_32767)
void __ibar (imm0_32767)
void __syscall (imm0_32767)
void __break (imm0_32767)
These instrisic functions are available by including larchintrin.h and
using -mfrecipe.
float __frecipe_s (float);
double __frecipe_d (double);
float __frsqrte_s (float);
double __frsqrte_d (double);
Additional built-in functions are available for LoongArch family processors to efficiently use 128-bit floating-point (__float128) values.
The following are the basic built-in functions supported.
__float128 __builtin_fabsq (__float128); __float128 __builtin_copysignq (__float128, __float128); __float128 __builtin_infq (void); __float128 __builtin_huge_valq (void); __float128 __builtin_nanq (void); __float128 __builtin_nansq (void);
Returns the value that is currently set in the ‘tp’ register.
void * __builtin_thread_pointer (void)