Add LoongArch SIMD intrinsics

.gitignore

@@ -2,7 +2,9 @@ Cargo.lock
 .*.swp
 target
 tags
-crates/stdarch-gen/aarch64.rs
-crates/stdarch-gen/arm.rs
+crates/stdarch-gen-arm/aarch64.rs
+crates/stdarch-gen-arm/arm.rs
+crates/stdarch-gen-loongarch/lasx.c
+crates/stdarch-gen-loongarch/lsx.c
 c_programs/*
-rust_programs/*
+rust_programs/*

Cargo.toml

@@ -4,7 +4,8 @@ members = [
   "crates/stdarch-verify",
   "crates/core_arch",
   "crates/std_detect",
-  "crates/stdarch-gen",
+  "crates/stdarch-gen-arm",
+  "crates/stdarch-gen-loongarch",
   "crates/intrinsic-test",
   "examples/"
 ]

crates/core_arch/src/aarch64/neon/generated.rs

@@ -1,9 +1,9 @@
 // This code is automatically generated. DO NOT MODIFY.
 //
-// Instead, modify `crates/stdarch-gen/neon.spec` and run the following command to re-generate this file:
+// Instead, modify `crates/stdarch-gen-arm/neon.spec` and run the following command to re-generate this file:
 //
 // ```
-// OUT_DIR=`pwd`/crates/core_arch cargo run -p stdarch-gen -- crates/stdarch-gen/neon.spec
+// OUT_DIR=`pwd`/crates/core_arch cargo run -p stdarch-gen-arm -- crates/stdarch-gen-arm/neon.spec
 // ```
 use super::*;
 #[cfg(test)]

crates/core_arch/src/arm_shared/neon/generated.rs

@@ -1,9 +1,9 @@
 // This code is automatically generated. DO NOT MODIFY.
 //
-// Instead, modify `crates/stdarch-gen/neon.spec` and run the following command to re-generate this file:
+// Instead, modify `crates/stdarch-gen-arm/neon.spec` and run the following command to re-generate this file:
 //
 // ```
-// OUT_DIR=`pwd`/crates/core_arch cargo run -p stdarch-gen -- crates/stdarch-gen/neon.spec
+// OUT_DIR=`pwd`/crates/core_arch cargo run -p stdarch-gen-arm -- crates/stdarch-gen-arm/neon.spec
 // ```
 use super::*;
 #[cfg(test)]

crates/core_arch/src/lib.rs

@@ -24,6 +24,7 @@
     avx512_target_feature,
     mips_target_feature,
     powerpc_target_feature,
+    loongarch_target_feature,
     wasm_target_feature,
     abi_unadjusted,
     rtm_target_feature,

crates/core_arch/src/loongarch64/lasx/mod.rs

@@ -0,0 +1,17 @@
+//! LoongArch64 LASX intrinsics
+
+#![allow(non_camel_case_types)]
+
+#[rustfmt::skip]
+mod types;
+
+#[rustfmt::skip]
+mod generated;
+
+#[rustfmt::skip]
+#[unstable(feature = "stdarch_loongarch", issue = "117427")]
+pub use self::generated::*;
+
+#[rustfmt::skip]
+#[cfg(test)]
+mod tests;