Use _bzhi_u32 for 32-bit builds when building with STATIC_BMI2

`_bzhi_u64` is available only for 64-bit builds, while `BIT_getLowerBits` expects `nbBits` to be less than `BIT_MASK_SIZE` (`BIT_MASK_SIZE` is 32)
2025-01-18 21:33:04 +02:00
parent c8243b4724
commit ee17f4c6d2
1 changed files with 5 additions and 1 deletions
@@ -162,7 +162,11 @@ MEM_STATIC size_t BIT_initCStream(BIT_CStream_t* bitC,
 FORCE_INLINE_TEMPLATE size_t BIT_getLowerBits(size_t bitContainer, U32 const nbBits)
 {
 #if defined(STATIC_BMI2) && STATIC_BMI2 == 1 && !defined(ZSTD_NO_INTRINSICS)
-    return  _bzhi_u64(bitContainer, nbBits);
+#if defined(__x86_64__) || defined(_M_X64)
+    return _bzhi_u64(bitContainer, nbBits);
+#else
+    return _bzhi_u32(bitContainer, nbBits);
+#endif
 #else
    assert(nbBits < BIT_MASK_SIZE);
    return bitContainer & BIT_mask[nbBits];