Revert "Auto merge of #63649 - tlively:emscripten-upstream-upgrade, r=alexcrichton"

This reverts commit 7870050796e5904a0fc85ecbe6fa6dde1cfe0c91, reversing
changes made to 2e7244807a7878f6eca3eb7d97ae9b413aa49014.

6 files changed, 117 insertions, 26 deletions

diff --git a/src/ci/docker/asmjs/Dockerfile b/src/ci/docker/asmjs/Dockerfile
index d136fae79aa..3abaab6b34e 100644
--- a/src/ci/docker/asmjs/Dockerfile
+++ b/src/ci/docker/asmjs/Dockerfile
@@ -11,8 +11,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   cmake \
   sudo \
   gdb \
-  xz-utils \
-  bzip2
+  xz-utils
 
 COPY scripts/emscripten.sh /scripts/
 RUN bash /scripts/emscripten.sh
@@ -21,16 +20,28 @@ COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
 ENV PATH=$PATH:/emsdk-portable
-ENV PATH=$PATH:/emsdk-portable/upstream/emscripten/
-ENV PATH=$PATH:/emsdk-portable/node/12.9.1_64bit/bin/
-ENV BINARYEN_ROOT=/emsdk-portable/upstream/
+ENV PATH=$PATH:/emsdk-portable/clang/e1.38.15_64bit/
+ENV PATH=$PATH:/emsdk-portable/emscripten/1.38.15/
+ENV PATH=$PATH:/emsdk-portable/node/8.9.1_64bit/bin/
+ENV EMSCRIPTEN=/emsdk-portable/emscripten/1.38.15/
+ENV BINARYEN_ROOT=/emsdk-portable/clang/e1.38.15_64bit/binaryen/
 ENV EM_CONFIG=/emsdk-portable/.emscripten
 
 ENV TARGETS=asmjs-unknown-emscripten
 
-ENV SCRIPT python2.7 ../x.py test --target $TARGETS
+ENV RUST_CONFIGURE_ARGS --enable-emscripten --disable-optimize-tests
 
-# This is almost identical to the wasm32-unknown-emscripten target, so
-# running with assertions again is not useful
-ENV NO_DEBUG_ASSERTIONS=1
+ENV SCRIPT python2.7 ../x.py test --target $TARGETS \
+  src/test/ui \
+  src/test/run-fail \
+  src/libstd \
+  src/liballoc \
+  src/libcore
+
+# Debug assertions in rustc are largely covered by other builders, and LLVM
+# assertions cause this builder to slow down by quite a large amount and don't
+# buy us a huge amount over other builders (not sure if we've ever seen an
+# asmjs-specific backend assertion trip), so disable assertions for these
+# tests.
 ENV NO_LLVM_ASSERTIONS=1
+ENV NO_DEBUG_ASSERTIONS=1
diff --git a/src/ci/docker/disabled/wasm32-exp/Dockerfile b/src/ci/docker/disabled/wasm32-exp/Dockerfile
new file mode 100644
index 00000000000..420d47b314c
--- /dev/null
+++ b/src/ci/docker/disabled/wasm32-exp/Dockerfile
@@ -0,0 +1,35 @@
+FROM ubuntu:16.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  g++ \
+  make \
+  file \
+  curl \
+  ca-certificates \
+  python \
+  git \
+  cmake \
+  sudo \
+  gdb \
+  xz-utils \
+  jq \
+  bzip2
+
+# emscripten
+COPY scripts/emscripten-wasm.sh /scripts/
+COPY wasm32-exp/node.sh /usr/local/bin/node
+RUN bash /scripts/emscripten-wasm.sh
+
+# cache
+COPY scripts/sccache.sh /scripts/
+RUN sh /scripts/sccache.sh
+
+# env
+ENV PATH=/wasm-install/emscripten:/wasm-install/bin:$PATH
+ENV EM_CONFIG=/root/.emscripten
+
+ENV TARGETS=wasm32-experimental-emscripten
+
+ENV RUST_CONFIGURE_ARGS --experimental-targets=WebAssembly
+
+ENV SCRIPT python2.7 ../x.py test --target $TARGETS
diff --git a/src/ci/docker/disabled/wasm32-exp/node.sh b/src/ci/docker/disabled/wasm32-exp/node.sh
new file mode 100755
index 00000000000..aa938971c70
--- /dev/null
+++ b/src/ci/docker/disabled/wasm32-exp/node.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+path="$(dirname $1)"
+file="$(basename $1)"
+
+shift
+
+cd "$path"
+exec /node-v8.0.0-linux-x64/bin/node "$file" "$@"
diff --git a/src/ci/docker/disabled/wasm32/Dockerfile b/src/ci/docker/disabled/wasm32/Dockerfile
index b2cf862c0a5..0d2bd39303e 100644
--- a/src/ci/docker/disabled/wasm32/Dockerfile
+++ b/src/ci/docker/disabled/wasm32/Dockerfile
@@ -11,9 +11,9 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   cmake \
   sudo \
   gdb \
-  xz-utils \
-  bzip2
+  xz-utils
 
+# emscripten
 COPY scripts/emscripten.sh /scripts/
 RUN bash /scripts/emscripten.sh
 
@@ -21,18 +21,12 @@ COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
 ENV PATH=$PATH:/emsdk-portable
-ENV PATH=$PATH:/emsdk-portable/upstream/emscripten/
-ENV PATH=$PATH:/emsdk-portable/node/12.9.1_64bit/bin/
-ENV BINARYEN_ROOT=/emsdk-portable/upstream/
+ENV PATH=$PATH:/emsdk-portable/clang/e1.38.15_64bit/
+ENV PATH=$PATH:/emsdk-portable/emscripten/1.38.15/
+ENV PATH=$PATH:/emsdk-portable/node/8.9.1_64bit/bin/
+ENV EMSCRIPTEN=/emsdk-portable/emscripten/1.38.15/
+ENV BINARYEN_ROOT=/emsdk-portable/clang/e1.38.15_64bit/binaryen/
 ENV EM_CONFIG=/emsdk-portable/.emscripten
 
 ENV TARGETS=wasm32-unknown-emscripten
-
-# FIXME: Re-enable these tests once Cargo stops trying to execute wasms
-ENV SCRIPT python2.7 ../x.py test --target $TARGETS \
-    --exclude src/libcore \
-    --exclude src/liballoc \
-    --exclude src/libproc_macro \
-    --exclude src/libstd \
-    --exclude src/libterm \
-    --exclude src/libtest
+ENV SCRIPT python2.7 ../x.py test --target $TARGETS
diff --git a/src/ci/docker/scripts/emscripten-wasm.sh b/src/ci/docker/scripts/emscripten-wasm.sh
new file mode 100644
index 00000000000..e4a93d7a100
--- /dev/null
+++ b/src/ci/docker/scripts/emscripten-wasm.sh
@@ -0,0 +1,37 @@
+set -ex
+
+hide_output() {
+  set +x
+  on_err="
+echo ERROR: An error was encountered with the build.
+cat /tmp/build.log
+exit 1
+"
+  trap "$on_err" ERR
+  bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
+  PING_LOOP_PID=$!
+  $@ &> /tmp/build.log
+  trap - ERR
+  kill $PING_LOOP_PID
+  rm -f /tmp/build.log
+  set -x
+}
+
+# Download last known good emscripten from WebAssembly waterfall
+BUILD=$(curl -fL https://storage.googleapis.com/wasm-llvm/builds/linux/lkgr.json | \
+    jq '.build | tonumber')
+curl -sL https://storage.googleapis.com/wasm-llvm/builds/linux/$BUILD/wasm-binaries.tbz2 | \
+    hide_output tar xvkj
+
+# node 8 is required to run wasm
+cd /
+curl -sL https://nodejs.org/dist/v8.0.0/node-v8.0.0-linux-x64.tar.xz | \
+    tar -xJ
+
+# Make emscripten use wasm-ready node and LLVM tools
+echo "EMSCRIPTEN_ROOT = '/wasm-install/emscripten'" >> /root/.emscripten
+echo "NODE_JS='/usr/local/bin/node'" >> /root/.emscripten
+echo "LLVM_ROOT='/wasm-install/bin'" >> /root/.emscripten
+echo "BINARYEN_ROOT = '/wasm-install'" >> /root/.emscripten
+echo "COMPILER_ENGINE = NODE_JS" >> /root/.emscripten
+echo "JS_ENGINES = [NODE_JS]" >> /root/.emscripten
diff --git a/src/ci/docker/scripts/emscripten.sh b/src/ci/docker/scripts/emscripten.sh
index 9c7a09e227a..47196e89396 100644
--- a/src/ci/docker/scripts/emscripten.sh
+++ b/src/ci/docker/scripts/emscripten.sh
@@ -17,15 +17,20 @@ exit 1
   set -x
 }
 
-git clone https://github.com/emscripten-core/emsdk.git /emsdk-portable
+cd /
+curl -fL https://mozilla-games.s3.amazonaws.com/emscripten/releases/emsdk-portable.tar.gz | \
+    tar -xz
+
 cd /emsdk-portable
-hide_output ./emsdk install 1.38.46-upstream
-./emsdk activate 1.38.46-upstream
+./emsdk update
+hide_output ./emsdk install sdk-1.38.15-64bit
+./emsdk activate sdk-1.38.15-64bit
 
 # Compile and cache libc
 source ./emsdk_env.sh
 echo "main(){}" > a.c
 HOME=/emsdk-portable/ emcc a.c
+HOME=/emsdk-portable/ emcc -s BINARYEN=1 a.c
 rm -f a.*
 
 # Make emsdk usable by any user