Auto merge of #119400 - tmandry:build-fuchsia-8c, r=<try>

Build Fuchsia on 8 cores instead of 16

Requested in #117771 (comment).

r? `@tmandry`

Author: bors

.github/workflows/ci.yml

@@ -579,10 +579,9 @@ jobs:
     strategy:
       matrix:
         include:
-          - name: dist-x86_64-linux
-            env:
-              CODEGEN_BACKENDS: "llvm,cranelift"
-            os: ubuntu-20.04-16core-64gb
+          - name: x86_64-gnu-integration
+            os: ubuntu-20.04-8core-32gb
+            env: {}
     timeout-minutes: 600
     runs-on: "${{ matrix.os }}"
     steps:

src/ci/docker/host-x86_64/x86_64-gnu-integration/Dockerfile

@@ -44,13 +44,17 @@ ENV CARGO_TARGET_X86_64_FUCHSIA_RUSTFLAGS \
 
 ENV TARGETS=x86_64-fuchsia
 ENV TARGETS=$TARGETS,x86_64-unknown-linux-gnu
+ENV TARGETS=$TARGETS,wasm32-unknown-unknown
 
 COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
 ENV RUST_INSTALL_DIR /checkout/obj/install
 RUN mkdir -p $RUST_INSTALL_DIR/etc
 
+# Fuchsia only supports LLVM.
+ENV CODEGEN_BACKENDS llvm
+
 ENV RUST_CONFIGURE_ARGS \
   --prefix=$RUST_INSTALL_DIR \
   --sysconfdir=etc \

src/ci/docker/host-x86_64/x86_64-gnu-integration/build-fuchsia.sh

@@ -6,7 +6,9 @@
 set -euf -o pipefail
 
 INTEGRATION_SHA=66793c4894bf6204579bbee3b79956335f31c768
-PICK_REFS=()
+PICK_REFS=(
+    refs/changes/86/965586/2
+)
 
 checkout=fuchsia
 jiri=.jiri_root/bin/jiri

src/ci/github-actions/ci.yml

@@ -476,7 +476,7 @@ jobs:
               # nightly features to compile, and this job would fail if
               # executed on beta and stable.
               CI_ONLY_WHEN_CHANNEL: nightly
-            <<: *job-linux-16c
+            <<: *job-linux-8c
 
           - name: x86_64-gnu-debug
             <<: *job-linux-8c
@@ -732,11 +732,13 @@ jobs:
     strategy:
       matrix:
         include:
-          - &dist-x86_64-linux
-            name: dist-x86_64-linux
-            env:
-              CODEGEN_BACKENDS: llvm,cranelift
-            <<: *job-linux-16c
+          - name: x86_64-gnu-integration
+            <<: *job-linux-8c
+          #- &dist-x86_64-linux
+          #  name: dist-x86_64-linux
+          #  env:
+          #    CODEGEN_BACKENDS: llvm,cranelift
+          #  <<: *job-linux-16c
 
 
   master:

src/ci/run.sh

@@ -130,10 +130,10 @@ else
   # tests as it will fail them.
   if [[ "${ENABLE_GCC_CODEGEN}" == "1" ]]; then
     # Test the Cranelift and GCC backends in CI. Bootstrap knows which targets to run tests on.
-    RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.codegen-backends=llvm,cranelift,gcc"
+    RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.codegen-backends=${CODEGEN_BACKENDS:-llvm,cranelift,gcc}"
   else
     # Test the Cranelift backend in CI. Bootstrap knows which targets to run tests on.
-    RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.codegen-backends=llvm,cranelift"
+    RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.codegen-backends=${CODEGEN_BACKENDS:-llvm,cranelift}"
   fi
 
   # We enable this for non-dist builders, since those aren't trying to produce