move msa to mips

Author: gnzlbg

coresimd/mips/mod.rs

@@ -0,0 +1,4 @@
+//! MIPS
+
+mod msa;
+pub use self::msa::*;

coresimd/mips/msa.rs

@@ -0,0 +1,54 @@
+//! MIPS SIMD Architecture intrinsics
+//!
+//! The reference is [MIPS Architecture for Programmers Volume IV-j: The MIPS32 SIMD
+//! Architecture Module Revision 1.12][msa_ref].
+//!
+//! [msa_ref]: http://cdn2.imgtec.com/documentation/MD00866-2B-MSA32-AFP-01.12.pdf
+
+#[cfg(test)]
+use stdsimd_test::assert_instr;
+use ::coresimd::simd::*;
+
+#[allow(improper_ctypes)]
+extern "C" {
+    #[link_name = "llvm.mips.add.a.b"]
+    fn msa_add_a_b(a: i8x16, b: i8x16) -> i8x16;
+}
+
+/// Vector Add Absolute Values.
+///
+/// Adds the absolute values of the elements in `a` and `b` into the result vector.
+#[inline]
+#[target_feature(enable = "msa")]
+#[cfg_attr(test, assert_instr(add_a.b))]
+pub unsafe fn __msa_add_a_b(a: i8x16, b: i8x16) -> i8x16 {
+    msa_add_a_b(a, b)
+}
+
+#[cfg(test)]
+mod tests {
+    use simd::*;
+    use stdsimd_test::simd_test;
+    use coresimd::mips64::msa;
+
+    #[simd_test = "msa"]
+    unsafe fn __msa_add_a_b() {
+        #[cfg_attr(rustfmt, rustfmt_skip)]
+        let a = i8x16::new(
+            1, 2, 3, 4,
+            1, 2, 3, 4,
+            1, 2, 3, 4,
+            1, 2, 3, 4,
+        );
+        #[cfg_attr(rustfmt, rustfmt_skip)]
+        let b = i8x16::new(
+            -4, -3, -2, -1,
+            -4, -3, -2, -1,
+            -4, -3, -2, -1,
+            -4, -3, -2, -1,
+        );
+        let r = i8x16::splat(5);
+
+        assert_eq!(r, msa::__msa_add_a_b(a, b));
+    }
+}