diff options
| -rw-r--r-- | sysdeps/riscv/string-fza.h | 7 | ||||
| -rw-r--r-- | sysdeps/riscv/string-fzi.h | 2 |
2 files changed, 7 insertions, 2 deletions
diff --git a/sysdeps/riscv/string-fza.h b/sysdeps/riscv/string-fza.h index 4429653..4958d5d 100644 --- a/sysdeps/riscv/string-fza.h +++ b/sysdeps/riscv/string-fza.h @@ -19,7 +19,7 @@ #ifndef _RISCV_STRING_FZA_H #define _RISCV_STRING_FZA_H 1 -#ifdef __riscv_zbb +#if defined __riscv_zbb || defined __riscv_xtheadbb /* With bitmap extension we can use orc.b to find all zero bytes. */ # include <string-misc.h> # include <string-optype.h> @@ -32,8 +32,13 @@ static __always_inline find_t find_zero_all (op_t x) { find_t r; +#ifdef __riscv_xtheadbb + asm ("th.tstnbz %0, %1" : "=r" (r) : "r" (x)); + return r; +#else asm ("orc.b %0, %1" : "=r" (r) : "r" (x)); return ~r; +#endif } /* This function returns 0xff for each byte that is equal between X1 and diff --git a/sysdeps/riscv/string-fzi.h b/sysdeps/riscv/string-fzi.h index 8f56c37..45d6367 100644 --- a/sysdeps/riscv/string-fzi.h +++ b/sysdeps/riscv/string-fzi.h @@ -19,7 +19,7 @@ #ifndef _STRING_RISCV_FZI_H #define _STRING_RISCV_FZI_H 1 -#ifdef __riscv_zbb +#if defined __riscv_zbb || defined __riscv_xtheadbb # include <sysdeps/generic/string-fzi.h> #else /* Without bitmap clz/ctz extensions, it is faster to direct test the bits |