Refactor stdsimd

This commit:

* renames `coresimd` to `core_arch` and `stdsimd` to `std_detect`

* `std_detect` does no longer depend on `core_arch` - it is a freestanding
  `no_std` library that only depends on `core` - it is renamed to `std_detect`

* moves the top-level coresimd and stdsimd directories into the appropriate
  crates/... directories - this simplifies creating crate.io releases of these crates

* moves the top-level `coresimd` and `stdsimd` sub-directories into their
  corresponding crates in `crates/{core_arch, std_detect}`.

Author: gnzlbg

Cargo.toml

@@ -1,7 +1,9 @@
 [workspace]
 members = [
   "crates/stdsimd-verify",
-  "crates/stdsimd",
+  "crates/core_arch",
+  "crates/std_detect",
+  "examples/"
 ]
 exclude = [
   "crates/wasm-assert-instr-tests"

README.md

@@ -11,8 +11,9 @@ and `libstd`.
 The easiest way to use it is just to import it via `use std::arch`. 
 
 The `std::arch` component for `x86` is available in stable Rust. The `std::arch`
-components for other architectures and the `std::simd` component require nightly
-Rust.
+components for other architectures requires nightly Rust. The `std::simd`
+component now lives in the
+[`packed_simd`](https://github.com/rust-lang-nursery/packed_simd) crate.
 
 Using `stdsimd` master branch is not recommended. It requires nightly Rust, it
 only works with particular Rust nightly versions, and it can (and does) break
@@ -21,7 +22,8 @@ often. If you need to use `stdsimd` master branch, you can add it to your
 
 ```toml
 #[dependencies]
-stdsimd = { git = "https://github.com/rust-lang-nursery/stdsimd.git" }
+core_arch = { git = "https://github.com/rust-lang-nursery/stdsimd.git" }
+std_detect = { git = "https://github.com/rust-lang-nursery/stdsimd.git" }
 ```
 
 # Documentation

ci/dox.sh

@@ -22,15 +22,16 @@ dox() {
   rm -rf "target/doc/${arch}"
   mkdir "target/doc/${arch}"
 
-  cargo build --verbose --target "${target}" --manifest-path crates/stdsimd/Cargo.toml
+  cargo build --verbose --target "${target}" --manifest-path crates/core_arch/Cargo.toml
+  cargo build --verbose --target "${target}" --manifest-path crates/std_detect/Cargo.toml
 
   rustdoc --verbose --target "${target}" \
-          -o "target/doc/${arch}" crates/coresimd/src/lib.rs \
-          --crate-name coresimd \
+          -o "target/doc/${arch}" crates/core_arch/src/lib.rs \
+          --crate-name core_arch \
           --library-path "target/${target}/debug/deps"
   rustdoc --verbose --target "${target}" \
-          -o "target/doc/${arch}" crates/stdsimd/src/lib.rs \
-          --crate-name stdsimd \
+          -o "target/doc/${arch}" crates/std_detect/src/lib.rs \
+          --crate-name std_detect \
           --library-path "target/${target}/debug/deps" \
           --extern cfg_if="$(ls target/"${target}"/debug/deps/libcfg_if-*.rlib)" \
           --extern libc="$(ls target/"${target}"/debug/deps/liblibc-*.rlib)"

ci/run.sh

@@ -60,9 +60,9 @@ cargo_test() {
     cmd="$cmd ${subcmd} --target=$TARGET $1"
     if [ "$NOSTD" = "1" ]
     then
-        cmd="$cmd -p coresimd"
+        cmd="$cmd -p core_arch"
     else
-        cmd="$cmd -p coresimd -p stdsimd"
+        cmd="$cmd -p core_arch -p std_detect -p stdsimd_examples"
     fi
     cmd="$cmd -- $2"
     if [ "$NORUN" != "1" ]
@@ -109,4 +109,12 @@ case ${TARGET} in
         ;;
     *)
         ;;
+
 esac
+
+# Test examples
+(
+    cd examples
+    cargo test
+    echo test | cargo run --release hex
+)

coresimd/mod.rs

@@ -1,17 +1,17 @@
 [package]
-name = "coresimd"
+name = "core_arch"
 version = "0.1.3"
 authors = [
     "Alex Crichton <[email protected]>",
     "Andrew Gallant <[email protected]>",
     "Gonzalo Brito Gadeschi <[email protected]>",
 ]
 description = "SIMD support in Rust's core library."
-documentation = "https://docs.rs/stdsimd"
+documentation = "https://docs.rs/core_arch"
 homepage = "https://github.com/rust-lang-nursery/stdsimd"
 repository = "https://github.com/rust-lang-nursery/stdsimd"
 readme = "README.md"
-keywords = ["core", "simd", "intrinsics"]
+keywords = ["core", "simd", "arch", "intrinsics"]
 categories = ["hardware-support", "no-std"]
 license = "MIT/Apache-2.0"
 
@@ -24,7 +24,7 @@ maintenance = { status = "experimental" }
 
 [dev-dependencies]
 stdsimd-test = { version = "0.*", path = "../stdsimd-test" }
-stdsimd = { version = "0.1.3", path = "../stdsimd" }
+std_detect = { version = "0.1.3", path = "../std_detect" }
 
 [target.wasm32-unknown-unknown.dev-dependencies]
 wasm-bindgen-test = "=0.2.19"

crates/coresimd/Cargo.toml crates/core_arch/Cargo.toml

@@ -87,8 +87,8 @@ pub unsafe fn __crc32cd(crc: u32, data: u64) -> u32 {
 
 #[cfg(test)]
 mod tests {
-    use coresimd::aarch64::*;
-    use coresimd::simd::*;
+    use core_arch::aarch64::*;
+    use core_arch::simd::*;
     use std::mem;
     use stdsimd_test::simd_test;
 

crates/coresimd/build.rs crates/core_arch/build.rs

@@ -1,5 +1,5 @@
-use coresimd::arm::uint32x4_t;
-use coresimd::arm::uint8x16_t;
+use core_arch::arm::uint32x4_t;
+use core_arch::arm::uint8x16_t;
 
 #[allow(improper_ctypes)]
 extern "C" {
@@ -164,8 +164,8 @@ pub unsafe fn vsha256su1q_u32(
 
 #[cfg(test)]
 mod tests {
-    use coresimd::aarch64::*;
-    use coresimd::simd::*;
+    use core_arch::aarch64::*;
+    use core_arch::simd::*;
     use std::mem;
     use stdsimd_test::simd_test;