From 2bf7c79d0309c47dd5860222a3a733c4dc3360ef Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Thu, 12 Oct 2017 11:18:02 -0700
Subject: [PATCH] Add CI in Intel's instruction emulator

This commit adds a new builder on CI for running tests in Intel's own emulator
and also adds an assertion that on this emulator no tests are skipped due to
missing CPU features by accident.

Closes #92
---
 .travis.yml                                         |  1 +
 .../x86_64-unknown-linux-gnu-emulated/Dockerfile    | 13 +++++++++++++
 ci/run-docker.sh                                    |  7 +++++--
 stdsimd-test/simd-test-macro/src/lib.rs             |  2 ++
 stdsimd-test/src/lib.rs                             |  7 +++++++
 5 files changed, 28 insertions(+), 2 deletions(-)
 create mode 100644 ci/docker/x86_64-unknown-linux-gnu-emulated/Dockerfile

diff --git a/.travis.yml b/.travis.yml
index 06f1bce392..85df6b0d0b 100644
--- a/.travis.yml
+++ b/.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
diff --git a/ci/docker/x86_64-unknown-linux-gnu-emulated/Dockerfile b/ci/docker/x86_64-unknown-linux-gnu-emulated/Dockerfile
new file mode 100644
index 0000000000..d37a814a8a
--- /dev/null
+++ b/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 --"
diff --git a/ci/run-docker.sh b/ci/run-docker.sh
index e5a19af544..d5ea59e4cd 100755
--- a/ci/run-docker.sh
+++ b/ci/run-docker.sh
@@ -7,6 +7,7 @@ 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 \
@@ -14,13 +15,15 @@ run() {
       --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
diff --git a/stdsimd-test/simd-test-macro/src/lib.rs b/stdsimd-test/simd-test-macro/src/lib.rs
index d4b413df24..1543a27677 100644
--- a/stdsimd-test/simd-test-macro/src/lib.rs
+++ b/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]
diff --git a/stdsimd-test/src/lib.rs b/stdsimd-test/src/lib.rs
index 2861e6b568..8bad780acb 100644
--- a/stdsimd-test/src/lib.rs
+++ b/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);
+}