Add AArch64 CRC32 intrinsics (#612)

Author: valpackett

coresimd/aarch64/crc.rs

@@ -0,0 +1,144 @@
+
+extern "C" {
+    #[link_name = "llvm.aarch64.crc32b"]
+    fn crc32b_(crc: u32, data: u32) -> u32;
+    #[link_name = "llvm.aarch64.crc32h"]
+    fn crc32h_(crc: u32, data: u32) -> u32;
+    #[link_name = "llvm.aarch64.crc32w"]
+    fn crc32w_(crc: u32, data: u32) -> u32;
+    #[link_name = "llvm.aarch64.crc32x"]
+    fn crc32x_(crc: u32, data: u64) -> u32;
+
+    #[link_name = "llvm.aarch64.crc32cb"]
+    fn crc32cb_(crc: u32, data: u32) -> u32;
+    #[link_name = "llvm.aarch64.crc32ch"]
+    fn crc32ch_(crc: u32, data: u32) -> u32;
+    #[link_name = "llvm.aarch64.crc32cw"]
+    fn crc32cw_(crc: u32, data: u32) -> u32;
+    #[link_name = "llvm.aarch64.crc32cx"]
+    fn crc32cx_(crc: u32, data: u64) -> u32;
+}
+
+#[cfg(test)]
+use stdsimd_test::assert_instr;
+
+/// CRC32 single round checksum for bytes (8 bits).
+#[inline]
+#[target_feature(enable = "crc")]
+#[cfg_attr(test, assert_instr(crc32b))]
+pub unsafe fn crc32b(crc: u32, data: u8) -> u32 {
+    crc32b_(crc, data as u32)
+}
+
+/// CRC32 single round checksum for half words (16 bits).
+#[inline]
+#[target_feature(enable = "crc")]
+#[cfg_attr(test, assert_instr(crc32h))]
+pub unsafe fn crc32h(crc: u32, data: u16) -> u32 {
+    crc32h_(crc, data as u32)
+}
+
+/// CRC32 single round checksum for words (32 bits).
+#[inline]
+#[target_feature(enable = "crc")]
+#[cfg_attr(test, assert_instr(crc32w))]
+pub unsafe fn crc32w(crc: u32, data: u32) -> u32 {
+    crc32w_(crc, data)
+}
+
+/// CRC32 single round checksum for quad words (64 bits).
+#[inline]
+#[target_feature(enable = "crc")]
+#[cfg_attr(test, assert_instr(crc32x))]
+pub unsafe fn crc32x(crc: u32, data: u64) -> u32 {
+    crc32x_(crc, data)
+}
+
+/// CRC32-C single round checksum for bytes (8 bits).
+#[inline]
+#[target_feature(enable = "crc")]
+#[cfg_attr(test, assert_instr(crc32cb))]
+pub unsafe fn crc32cb(crc: u32, data: u8) -> u32 {
+    crc32cb_(crc, data as u32)
+}
+
+/// CRC32-C single round checksum for half words (16 bits).
+#[inline]
+#[target_feature(enable = "crc")]
+#[cfg_attr(test, assert_instr(crc32ch))]
+pub unsafe fn crc32ch(crc: u32, data: u16) -> u32 {
+    crc32ch_(crc, data as u32)
+}
+
+/// CRC32-C single round checksum for words (32 bits).
+#[inline]
+#[target_feature(enable = "crc")]
+#[cfg_attr(test, assert_instr(crc32cw))]
+pub unsafe fn crc32cw(crc: u32, data: u32) -> u32 {
+    crc32cw_(crc, data)
+}
+
+/// CRC32-C single round checksum for quad words (64 bits).
+#[inline]
+#[target_feature(enable = "crc")]
+#[cfg_attr(test, assert_instr(crc32cx))]
+pub unsafe fn crc32cx(crc: u32, data: u64) -> u32 {
+    crc32cx_(crc, data)
+}
+
+#[cfg(test)]
+mod tests {
+    use coresimd::aarch64::*;
+    use coresimd::simd::*;
+    use std::mem;
+    use stdsimd_test::simd_test;
+
+    #[simd_test(enable = "crc")]
+    unsafe fn test_crc32b() {
+        assert_eq!(crc32b(0, 0), 0);
+        assert_eq!(crc32b(0, 255), 755167117);
+    }
+
+    #[simd_test(enable = "crc")]
+    unsafe fn test_crc32h() {
+        assert_eq!(crc32h(0, 0), 0);
+        assert_eq!(crc32h(0, 16384), 1994146192);
+    }
+
+    #[simd_test(enable = "crc")]
+    unsafe fn test_crc32w() {
+        assert_eq!(crc32w(0, 0), 0);
+        assert_eq!(crc32w(0, 4294967295), 3736805603);
+    }
+
+    #[simd_test(enable = "crc")]
+    unsafe fn test_crc32x() {
+        assert_eq!(crc32x(0, 0), 0);
+        assert_eq!(crc32x(0, 18446744073709551615), 1147535477);
+    }
+
+    #[simd_test(enable = "crc")]
+    unsafe fn test_crc32cb() {
+        assert_eq!(crc32cb(0, 0), 0);
+        assert_eq!(crc32cb(0, 255), 2910671697);
+    }
+
+    #[simd_test(enable = "crc")]
+    unsafe fn test_crc32ch() {
+        assert_eq!(crc32ch(0, 0), 0);
+        assert_eq!(crc32ch(0, 16384), 1098587580);
+    }
+
+    #[simd_test(enable = "crc")]
+    unsafe fn test_crc32cw() {
+        assert_eq!(crc32cw(0, 0), 0);
+        assert_eq!(crc32cw(0, 4294967295), 3080238136);
+    }
+
+    #[simd_test(enable = "crc")]
+    unsafe fn test_crc32cx() {
+        assert_eq!(crc32cx(0, 0), 0);
+        assert_eq!(crc32cx(0, 18446744073709551615), 3293575501);
+    }
+
+}

coresimd/aarch64/mod.rs

@@ -15,6 +15,9 @@ pub use self::neon::*;
 mod crypto;
 pub use self::crypto::*;
 
+mod crc;
+pub use self::crc::*;
+
 #[cfg(test)]
 use stdsimd_test::assert_instr;