Merge commit '9a0c32934e' into sync_cg_clif-2021-03-05

compiler/rustc_codegen_cranelift/.github/workflows/main.yml

@@ -12,9 +12,6 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest]
-        env:
-          - BACKEND: ""
-          - BACKEND: --oldbe
 
     steps:
     - uses: actions/checkout@v2
@@ -54,7 +51,7 @@ jobs:
         export COMPILE_RUNS=2
         export RUN_RUNS=2
 
-        ./test.sh $BACKEND
+        ./test.sh
 
     - name: Package prebuilt cg_clif
       run: tar cvfJ cg_clif.tar.xz build