Add CI in Intel's instruction emulator

.travis.yml

@@ -8,6 +8,7 @@ matrix:
     - env: TARGET=i586-unknown-linux-gnu
     - env: TARGET=i686-unknown-linux-gnu
     - env: TARGET=x86_64-unknown-linux-gnu NO_ADD=1
+    - env: TARGET=x86_64-unknown-linux-gnu-emulated NO_ADD=1 STDSIMD_TEST_EVERYTHING=1
     - env: TARGET=arm-unknown-linux-gnueabihf
     - env: TARGET=armv7-unknown-linux-gnueabihf
     - env: TARGET=aarch64-unknown-linux-gnu

ci/docker/x86_64-unknown-linux-gnu-emulated/Dockerfile

@@ -0,0 +1,13 @@
+FROM ubuntu:17.04
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  gcc \
+  libc6-dev \
+  file \
+  make \
+  ca-certificates \
+  curl \
+  bzip2
+
+RUN curl https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror/sde-external-8.9.0-2017-08-06-lin.tar.bz2 | \
+  tar xjf -
+ENV CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUNNER="/sde-external-8.9.0-2017-08-06-lin/sde64 --"

ci/run-docker.sh

@@ -7,20 +7,23 @@ run() {
     echo $1
     docker build -t stdsimd ci/docker/$1
     mkdir -p target
+    target=$(echo $1 | sed 's/-emulated//')
     docker run \
       --user `id -u`:`id -g` \
       --rm \
       --init \
       --volume $HOME/.cargo:/cargo \
       --env CARGO_HOME=/cargo \
       --volume `rustc --print sysroot`:/rust:ro \
-      --env TARGET=$1 \
+      --env TARGET=$target \
+      --env STDSIMD_TEST_EVERYTHING \
       --volume `pwd`:/checkout:ro \
       --volume `pwd`/target:/checkout/target \
       --workdir /checkout \
+      --privileged \
       stdsimd \
       bash \
-      -c 'PATH=$PATH:/rust/bin exec ci/run.sh $1'
+      -c 'PATH=$PATH:/rust/bin exec ci/run.sh'
 }
 
 if [ -z "$1" ]; then

stdsimd-test/simd-test-macro/src/lib.rs

@@ -51,6 +51,8 @@ pub fn simd_test(attr: proc_macro::TokenStream,
         fn #name() {
             if cfg_feature_enabled!(#target_feature) {
                 return unsafe { #name() };
+            } else {
+                ::stdsimd_test::assert_skip_test_ok(stringify!(#name));
             }
 
             #[target_feature = #enable_feature]

stdsimd-test/src/lib.rs

@@ -294,3 +294,10 @@ pub fn assert(fnptr: usize, fnname: &str, expected: &str) {
         panic!("too many instructions in the disassembly");
     }
 }
+
+pub fn assert_skip_test_ok(name: &str) {
+    if env::var("STDSIMD_TEST_EVERYTHING").is_err() {
+        return
+    }
+    panic!("skipped test `{}` when it shouldn't be skipped", name);
+}