Auto merge of #146414 - GuillaumeGomez:run-test-with-gcc-backend, r=Kobzol

Add a CI job that runs a subset of UI tests with the GCC backend

Part of rust-lang/compiler-team#891.

r? `@Kobzol`

Author: bors

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

@@ -0,0 +1,54 @@
+FROM ubuntu:22.04
+
+ARG DEBIAN_FRONTEND=noninteractive
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  bzip2 \
+  g++ \
+  make \
+  ninja-build \
+  file \
+  curl \
+  ca-certificates \
+  python3 \
+  git \
+  cmake \
+  sudo \
+  gdb \
+  libssl-dev \
+  pkg-config \
+  xz-utils \
+  mingw-w64 \
+  zlib1g-dev \
+  libzstd-dev \
+  # libgccjit dependencies
+  flex \
+  libmpfr-dev \
+  libgmp-dev \
+  libmpc3 \
+  libmpc-dev \
+  && rm -rf /var/lib/apt/lists/*
+
+COPY scripts/sccache.sh /scripts/
+RUN sh /scripts/sccache.sh
+
+ENV NO_DEBUG_ASSERTIONS 1
+ENV RUST_CONFIGURE_ARGS \
+ --build=x86_64-unknown-linux-gnu \
+ --enable-sanitizers \
+ --enable-profiler \
+ --enable-compiler-docs \
+ --set llvm.libzstd=true \
+ --set 'rust.codegen-backends=[\"llvm\",\"gcc\"]'
+ENV SCRIPT python3 ../x.py \
+  --stage 2 \
+  test tests \
+  --test-codegen-backend gcc \
+  --skip tests/coverage \
+  --skip tests/coverage-run-rustdoc \
+  --skip tests/rustdoc \
+  --skip tests/rustdoc-gui \
+  --skip tests/rustdoc-js \
+  --skip tests/rustdoc-js-std \
+  --skip tests/rustdoc-json \
+  --skip tests/rustdoc-ui \
+  --set 'rust.codegen-backends=[\"llvm\",\"gcc\"]'

src/ci/github-actions/jobs.yml

@@ -141,6 +141,9 @@ pr:
     <<: *job-linux-4c
   - name: x86_64-gnu-miri
     <<: *job-linux-4c
+  - name: x86_64-gnu-gcc
+    doc_url: https://rustc-dev-guide.rust-lang.org/tests/codegen-backend-tests/cg_gcc.html
+    <<: *job-linux-4c
 
 # Jobs that run when you perform a try build (@bors try)
 # These jobs automatically inherit envs.try, to avoid repeating
@@ -348,6 +351,10 @@ auto:
   - name: x86_64-gnu
     <<: *job-linux-4c
 
+  - name: x86_64-gnu-gcc
+    doc_url: https://rustc-dev-guide.rust-lang.org/tests/codegen-backend-tests/cg_gcc.html
+    <<: *job-linux-4c
+
   # This job ensures commits landing on nightly still pass the full
   # test suite on the stable channel. There are some UI tests that
   # depend on the channel being built (for example if they include the

tests/crashes/118244.rs

@@ -1,5 +1,6 @@
 //@ known-bug: #118244
 //@ compile-flags: -Cdebuginfo=2
+//@ ignore-backends: gcc
 
 #![allow(incomplete_features)]
 #![feature(generic_const_exprs)]

tests/crashes/134479.rs

@@ -1,5 +1,6 @@
 //@ known-bug: #134479
 //@ compile-flags: -Csymbol-mangling-version=v0 -Cdebuginfo=1
+//@ ignore-backends: gcc
 
 #![feature(generic_const_exprs)]
 

tests/crashes/139462.rs

@@ -1,5 +1,6 @@
 //@ known-bug: #139462
 //@ compile-flags: -Cdebuginfo=2
+//@ ignore-backends: gcc
 #![feature(unsafe_binders)]
 use std::unsafe_binder::wrap_binder;
 fn main() {

tests/crashes/34127.rs

@@ -1,6 +1,7 @@
 //@ compile-flags: -g -Copt-level=0 -Z verify-llvm-ir
 //@ known-bug: #34127
 //@ only-64bit
+//@ ignore-backends: gcc
 
 pub fn main() {
 let _a = [(); 1 << 63];

tests/debuginfo/associated-types.rs

@@ -1,5 +1,6 @@
 //@ compile-flags:-g
 //@ disable-gdb-pretty-printers
+//@ ignore-backends: gcc
 
 // === GDB TESTS ===================================================================================
 // gdb-command:run

tests/debuginfo/basic-stepping.rs

@@ -6,6 +6,7 @@
 //@ ignore-loongarch64: Doesn't work yet.
 //@ ignore-riscv64: Doesn't work yet.
 //@ compile-flags: -g
+//@ ignore-backends: gcc
 
 // gdb-command: run
 // FIXME(#97083): Should we be able to break on initialization of zero-sized types?

tests/debuginfo/basic-types-globals-metadata.rs

@@ -1,5 +1,6 @@
 //@ compile-flags:-g
 //@ disable-gdb-pretty-printers
+//@ ignore-backends: gcc
 
 // gdb-command:run
 // gdb-command:whatis basic_types_globals_metadata::B

tests/debuginfo/basic-types-globals.rs

@@ -5,6 +5,7 @@
 
 //@ [lto] compile-flags:-C lto
 //@ [lto] no-prefer-dynamic
+//@ ignore-backends: gcc
 
 // lldb-command:run
 // lldb-command:v B