Merge 0031abcebd into 0816badf3a

c/blake3_dispatch.c

@@ -4,9 +4,12 @@
 
 #include "blake3_impl.h"
 
-#if defined(IS_X86)
 #if defined(_MSC_VER)
 #include <Windows.h>
+#endif
+
+#if defined(IS_X86)
+#if defined(_MSC_VER)
 #include <intrin.h>
 #elif defined(__GNUC__)
 #include <immintrin.h>

c/blake3_impl.h

@@ -28,7 +28,7 @@ enum blake3_flags {
 #define INLINE static inline __attribute__((always_inline))
 #endif
 
-#if defined(__x86_64__) || defined(_M_X64) 
+#if (defined(__x86_64__) || defined(_M_X64)) && !defined(_M_ARM64EC)
 #define IS_X86
 #define IS_X86_64
 #endif
@@ -38,7 +38,7 @@ enum blake3_flags {
 #define IS_X86_32
 #endif
 
-#if defined(__aarch64__) || defined(_M_ARM64)
+#if defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC)
 #define IS_AARCH64
 #endif
 

src/lib.rs

@@ -221,6 +221,12 @@ fn counter_high(counter: u64) -> u32 {
 #[derive(Clone, Copy, Hash)]
 pub struct Hash([u8; OUT_LEN]);
 
+
+/// Provided to allow for construction of magic hash values (eg null commit in git as [0; OUT_LEN])
+pub const fn construct_magic_hash(bytes: [u8; OUT_LEN]) -> Hash {
+    Hash(bytes)
+}
+
 impl Hash {
     /// The raw bytes of the `Hash`. Note that byte arrays don't provide
     /// constant-time equality checking, so if  you need to compare hashes,