Merging upstream version 1.75.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 421 insertions, 76 deletions

diff --git a/compiler/rustc_codegen_gcc/.github/workflows/ci.yml b/compiler/rustc_codegen_gcc/.github/workflows/ci.yml
index d2b7724a2..65e7a697a 100644
--- a/compiler/rustc_codegen_gcc/.github/workflows/ci.yml
+++ b/compiler/rustc_codegen_gcc/.github/workflows/ci.yml
@@ -19,9 +19,8 @@ jobs:
       fail-fast: false
       matrix:
         libgccjit_version:
-          - { gcc: "libgccjit.so", extra: "", env_extra: "", artifacts_branch: "master" }
-          - { gcc: "libgccjit_without_int128.so", extra: "", env_extra: "", artifacts_branch: "master-without-128bit-integers" }
-          - { gcc: "libgccjit12.so", extra: "--no-default-features", env_extra: "TEST_FLAGS='-Cpanic=abort -Zpanic-abort-tests'", artifacts_branch: "gcc12" }
+          - { gcc: "libgccjit.so", artifacts_branch: "master" }
+          - { gcc: "libgccjit_without_int128.so", artifacts_branch: "master-without-128bit-integers" }
         commands: [
           "--mini-tests",
           "--std-tests",
@@ -33,47 +32,30 @@ jobs:
           "--extended-regex-tests",
           "--test-successful-rustc --nb-parts 2 --current-part 0",
           "--test-successful-rustc --nb-parts 2 --current-part 1",
-          "--test-failing-rustc",
         ]
 
     steps:
     - uses: actions/checkout@v3
 
-    - uses: actions/checkout@v3
-      with:
-        repository: llvm/llvm-project
-        path: llvm
-
     - name: Install packages
       # `llvm-14-tools` is needed to install the `FileCheck` binary which is used for asm tests.
       run: sudo apt-get install ninja-build ripgrep llvm-14-tools
 
-    - name: Install libgccjit12
-      if: matrix.libgccjit_version.gcc == 'libgccjit12.so'
-      run: sudo apt-get install libgccjit-12-dev
-
     - name: Download artifact
-      if: matrix.libgccjit_version.gcc != 'libgccjit12.so'
       uses: dawidd6/action-download-artifact@v2
       with:
           workflow: main.yml
-          name: ${{ matrix.libgccjit_version.gcc }}
-          path: gcc-build
+          name: gcc-13
+          path: gcc-13
           repo: antoyo/gcc
           branch: ${{ matrix.libgccjit_version.artifacts_branch }}
           event: push
           search_artifacts: true # Because, instead, the action only check the last job ran and that won't work since we want multiple artifacts.
 
     - name: Setup path to libgccjit
-      if: matrix.libgccjit_version.gcc == 'libgccjit12.so'
-      run: echo /usr/lib/gcc/x86_64-linux-gnu/12 > gcc_path
-
-    - name: Setup path to libgccjit
-      if: matrix.libgccjit_version.gcc != 'libgccjit12.so'
       run: |
-          echo $(readlink -f gcc-build) > gcc_path
-          # NOTE: the filename is still libgccjit.so even when the artifact name is different.
-          ln gcc-build/libgccjit.so gcc-build/libgccjit.so.0
+          sudo dpkg --force-overwrite -i gcc-13/gcc-13.deb
+          echo /usr/lib/ > gcc_path
 
     - name: Set env
       run: |
@@ -81,9 +63,6 @@ jobs:
         echo "LD_LIBRARY_PATH=$(cat gcc_path)" >> $GITHUB_ENV
         echo "workspace="$GITHUB_WORKSPACE >> $GITHUB_ENV
 
-    - name: Set RUST_COMPILER_RT_ROOT
-      run: echo "RUST_COMPILER_RT_ROOT="${{ env.workspace }}/llvm/compiler-rt >> $GITHUB_ENV
-
     - name: Cache cargo installed crates
       uses: actions/cache@v3
       with:
@@ -119,16 +98,16 @@ jobs:
 
     - name: Build
       run: |
-        ./prepare_build.sh
-        ${{ matrix.libgccjit_version.env_extra }} ./build.sh ${{ matrix.libgccjit_version.extra }}
-        ${{ matrix.libgccjit_version.env_extra }} cargo test ${{ matrix.libgccjit_version.extra }}
+        ./y.sh prepare --only-libcore
+        ./y.sh build
+        cargo test
         ./clean_all.sh
 
     - name: Prepare dependencies
       run: |
         git config --global user.email "user@example.com"
         git config --global user.name "User"
-        ./prepare.sh
+        ./y.sh prepare
 
     # Compile is a separate step, as the actions-rs/cargo action supports error annotations
     - name: Compile
@@ -137,13 +116,12 @@ jobs:
         command: build
         args: --release
 
-    - name: Add more failing tests for GCC 12
-      if: ${{ matrix.libgccjit_version.gcc == 'libgccjit12.so' }}
-      run: cat failing-ui-tests12.txt >> failing-ui-tests.txt
+    - name: Add more failing tests because the sysroot is not compiled with LTO
+      run: cat failing-non-lto-tests.txt >> failing-ui-tests.txt
 
     - name: Run tests
       run: |
-        ${{ matrix.libgccjit_version.env_extra }} ./test.sh --release --clean --build-sysroot ${{ matrix.commands }} ${{ matrix.libgccjit_version.extra }}
+        ./test.sh --release --clean --build-sysroot ${{ matrix.commands }}
 
   duplicates:
     runs-on: ubuntu-latest
diff --git a/compiler/rustc_codegen_gcc/.github/workflows/failures.yml b/compiler/rustc_codegen_gcc/.github/workflows/failures.yml
new file mode 100644
index 000000000..27864dcad
--- /dev/null
+++ b/compiler/rustc_codegen_gcc/.github/workflows/failures.yml
@@ -0,0 +1,129 @@
+# TODO: refactor to avoid duplication with the ci.yml file.
+name: Failures
+
+on:
+  - pull_request
+
+permissions:
+  contents: read
+
+env:
+  # Enable backtraces for easier debugging
+  RUST_BACKTRACE: 1
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+
+    strategy:
+      fail-fast: false
+      matrix:
+        libgccjit_version:
+          - gcc: "libgccjit.so"
+            artifacts_branch: "master"
+          - gcc: "libgccjit_without_int128.so"
+            artifacts_branch: "master-without-128bit-integers"
+          - gcc: "libgccjit12.so"
+            artifacts_branch: "gcc12"
+            extra: "--no-default-features"
+            # FIXME(antoyo): we need to set GCC_EXEC_PREFIX so that the linker can find the linker plugin.
+            # Not sure why it's not found otherwise.
+            env_extra: "TEST_FLAGS='-Cpanic=abort -Zpanic-abort-tests' GCC_EXEC_PREFIX=/usr/lib/gcc/"
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Install packages
+      run: sudo apt-get install ninja-build ripgrep
+
+    - name: Install libgccjit12
+      if: matrix.libgccjit_version.gcc == 'libgccjit12.so'
+      run: sudo apt-get install libgccjit-12-dev
+
+    - name: Setup path to libgccjit
+      if: matrix.libgccjit_version.gcc == 'libgccjit12.so'
+      run: echo /usr/lib/gcc/x86_64-linux-gnu/12 > gcc_path
+
+    - name: Download artifact
+      if: matrix.libgccjit_version.gcc != 'libgccjit12.so'
+      uses: dawidd6/action-download-artifact@v2
+      with:
+          workflow: main.yml
+          name: gcc-13
+          path: gcc-13
+          repo: antoyo/gcc
+          branch: ${{ matrix.libgccjit_version.artifacts_branch }}
+          event: push
+          search_artifacts: true # Because, instead, the action only check the last job ran and that won't work since we want multiple artifacts.
+
+    - name: Setup path to libgccjit
+      if: matrix.libgccjit_version.gcc != 'libgccjit12.so'
+      run: |
+          sudo dpkg --force-overwrite -i gcc-13/gcc-13.deb
+          echo /usr/lib/ > gcc_path
+
+    - name: Set env
+      run: |
+        echo "LIBRARY_PATH=$(cat gcc_path)" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=$(cat gcc_path)" >> $GITHUB_ENV
+        echo "workspace="$GITHUB_WORKSPACE >> $GITHUB_ENV
+
+    - name: Cache cargo installed crates
+      uses: actions/cache@v3
+      with:
+        path: ~/.cargo/bin
+        key: cargo-installed-crates2-ubuntu-latest
+
+    - name: Cache cargo registry
+      uses: actions/cache@v3
+      with:
+        path: ~/.cargo/registry
+        key: ${{ runner.os }}-cargo-registry2-${{ hashFiles('**/Cargo.lock') }}
+
+    - name: Cache cargo index
+      uses: actions/cache@v3
+      with:
+        path: ~/.cargo/git
+        key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+
+    - name: Cache cargo target dir
+      uses: actions/cache@v3
+      with:
+        path: target
+        key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain') }}
+
+    #- name: Cache rust repository
+      #uses: actions/cache@v3
+      #id: cache-rust-repository
+      #with:
+        #path: rust
+        #key: ${{ runner.os }}-packages-${{ hashFiles('rust/.git/HEAD') }}
+
+    - name: Git config
+      run: |
+        git config --global user.email "user@example.com"
+        git config --global user.name "User"
+
+    - name: Prepare dependencies
+      if: matrix.libgccjit_version.gcc == 'libgccjit12.so'
+      run: ./y.sh prepare --libgccjit12-patches
+
+    - name: Prepare dependencies
+      if: matrix.libgccjit_version.gcc != 'libgccjit12.so'
+      run: ./y.sh prepare
+
+    # Compile is a separate step, as the actions-rs/cargo action supports error annotations
+    - name: Compile
+      uses: actions-rs/cargo@v1.0.3
+      with:
+        command: build
+        args: --release
+
+    - name: Add more failing tests because the sysroot is not compiled with LTO
+      run: cat failing-non-lto-tests.txt >> failing-ui-tests.txt
+
+    - name: Run tests
+      id: tests
+      run: |
+        ${{ matrix.libgccjit_version.env_extra }} ./test.sh --release --clean --build-sysroot --test-failing-rustc ${{ matrix.libgccjit_version.extra }} | tee output_log
+        rg --text "test result" output_log >> $GITHUB_STEP_SUMMARY
diff --git a/compiler/rustc_codegen_gcc/.github/workflows/gcc12.yml b/compiler/rustc_codegen_gcc/.github/workflows/gcc12.yml
new file mode 100644
index 000000000..a0d363cf1
--- /dev/null
+++ b/compiler/rustc_codegen_gcc/.github/workflows/gcc12.yml
@@ -0,0 +1,115 @@
+name: CI libgccjit 12
+
+on:
+  - push
+  - pull_request
+
+permissions:
+  contents: read
+
+env:
+  # Enable backtraces for easier debugging
+  RUST_BACKTRACE: 1
+  TEST_FLAGS: "-Cpanic=abort -Zpanic-abort-tests"
+  # FIXME(antoyo): we need to set GCC_EXEC_PREFIX so that the linker can find the linker plugin.
+  # Not sure why it's not found otherwise.
+  GCC_EXEC_PREFIX: /usr/lib/gcc/
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+
+    strategy:
+      fail-fast: false
+      matrix:
+        commands: [
+          "--mini-tests",
+          "--std-tests",
+          # FIXME: re-enable asm tests when GCC can emit in the right syntax.
+          # "--asm-tests",
+          "--test-libcore",
+          "--extended-rand-tests",
+          "--extended-regex-example-tests",
+          "--extended-regex-tests",
+          "--test-successful-rustc --nb-parts 2 --current-part 0",
+          "--test-successful-rustc --nb-parts 2 --current-part 1",
+        ]
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Install packages
+      # `llvm-14-tools` is needed to install the `FileCheck` binary which is used for asm tests.
+      run: sudo apt-get install ninja-build ripgrep llvm-14-tools libgccjit-12-dev
+
+    - name: Setup path to libgccjit
+      run: echo /usr/lib/gcc/x86_64-linux-gnu/12 > gcc_path
+
+    - name: Set env
+      run: |
+        echo "LIBRARY_PATH=$(cat gcc_path)" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=$(cat gcc_path)" >> $GITHUB_ENV
+        echo "workspace="$GITHUB_WORKSPACE >> $GITHUB_ENV
+
+    - name: Cache cargo installed crates
+      uses: actions/cache@v3
+      with:
+        path: ~/.cargo/bin
+        key: cargo-installed-crates2-ubuntu-latest
+
+    - name: Cache cargo registry
+      uses: actions/cache@v3
+      with:
+        path: ~/.cargo/registry
+        key: ${{ runner.os }}-cargo-registry2-${{ hashFiles('**/Cargo.lock') }}
+
+    - name: Cache cargo index
+      uses: actions/cache@v3
+      with:
+        path: ~/.cargo/git
+        key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+
+    - name: Cache cargo target dir
+      uses: actions/cache@v3
+      with:
+        path: target
+        key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain') }}
+
+    #- name: Cache rust repository
+      ## We only clone the rust repository for rustc tests
+      #if: ${{ contains(matrix.commands, 'rustc') }}
+      #uses: actions/cache@v3
+      #id: cache-rust-repository
+      #with:
+        #path: rust
+        #key: ${{ runner.os }}-packages-${{ hashFiles('rust/.git/HEAD') }}
+
+    - name: Build
+      run: |
+        ./y.sh prepare --only-libcore --libgccjit12-patches
+        ./y.sh build --no-default-features --sysroot-panic-abort
+        cargo test --no-default-features
+        ./clean_all.sh
+
+    - name: Prepare dependencies
+      run: |
+        git config --global user.email "user@example.com"
+        git config --global user.name "User"
+        ./y.sh prepare --libgccjit12-patches
+
+    # Compile is a separate step, as the actions-rs/cargo action supports error annotations
+    - name: Compile
+      uses: actions-rs/cargo@v1.0.3
+      with:
+        command: build
+        args: --release
+
+    - name: Add more failing tests for GCC 12
+      run: cat failing-ui-tests12.txt >> failing-ui-tests.txt
+
+    - name: Add more failing tests because the sysroot is not compiled with LTO
+      run: cat failing-non-lto-tests.txt >> failing-ui-tests.txt
+
+    - name: Run tests
+      run: |
+        ./test.sh --release --clean --build-sysroot ${{ matrix.commands }} --no-default-features
diff --git a/compiler/rustc_codegen_gcc/.github/workflows/m68k.yml b/compiler/rustc_codegen_gcc/.github/workflows/m68k.yml
new file mode 100644
index 000000000..55ee0a212
--- /dev/null
+++ b/compiler/rustc_codegen_gcc/.github/workflows/m68k.yml
@@ -0,0 +1,139 @@
+# TODO: check if qemu-user-static-binfmt is needed (perhaps to run some tests since it probably calls exec).
+
+name: m68k CI
+
+on:
+  - push
+  - pull_request
+
+permissions:
+  contents: read
+
+env:
+  # Enable backtraces for easier debugging
+  RUST_BACKTRACE: 1
+  # TODO: remove when confish.sh is removed.
+  OVERWRITE_TARGET_TRIPLE: m68k-unknown-linux-gnu
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+
+    strategy:
+      fail-fast: false
+      matrix:
+        commands: [
+          "--mini-tests",
+          "--std-tests",
+          # TODO(antoyo): fix those on m68k.
+          #"--test-libcore",
+          #"--extended-rand-tests",
+          #"--extended-regex-example-tests",
+          #"--extended-regex-tests",
+          #"--test-successful-rustc --nb-parts 2 --current-part 0",
+          #"--test-successful-rustc --nb-parts 2 --current-part 1",
+          #"--test-failing-rustc",
+        ]
+
+    steps:
+    - name: Install packages
+      run: |
+        sudo apt-get update
+        sudo apt-get install qemu qemu-user-static
+
+    - uses: actions/checkout@v3
+
+    - name: Download GCC artifact
+      uses: dawidd6/action-download-artifact@v2
+      with:
+          workflow: m68k.yml
+          name: gcc-m68k-13
+          repo: cross-cg-gcc-tools/cross-gcc
+          branch: master
+          event: push
+
+    - name: Download VM artifact
+      uses: dawidd6/action-download-artifact@v2
+      with:
+          workflow: m68k.yml
+          name: debian-m68k
+          repo: cross-cg-gcc-tools/vms
+          branch: master
+          event: push
+
+    - name: Setup path to libgccjit
+      run: |
+          sudo dpkg -i gcc-m68k-13.deb
+          echo /usr/lib/ > gcc_path
+
+    - name: Set env
+      run: |
+        echo "LIBRARY_PATH=$(cat gcc_path)" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=$(cat gcc_path)" >> $GITHUB_ENV
+        echo "workspace="$GITHUB_WORKSPACE >> $GITHUB_ENV
+
+    - name: Cache cargo installed crates
+      uses: actions/cache@v3
+      with:
+        path: ~/.cargo/bin
+        key: cargo-installed-crates2-ubuntu-latest
+
+    #- name: Cache cargo registry
+      #uses: actions/cache@v3
+      #with:
+        #path: ~/.cargo/registry
+        #key: ${{ runner.os }}-cargo-registry2-${{ hashFiles('**/Cargo.lock') }}
+
+    #- name: Cache cargo index
+      #uses: actions/cache@v3
+      #with:
+        #path: ~/.cargo/git
+        #key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+
+    - name: Cache cargo target dir
+      uses: actions/cache@v3
+      with:
+        path: target
+        key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain') }}
+
+    #- name: Cache rust repository
+      ## We only clone the rust repository for rustc tests
+      #if: ${{ contains(matrix.commands, 'rustc') }}
+      #uses: actions/cache@v3
+      #id: cache-rust-repository
+      #with:
+        #path: rust
+        #key: ${{ runner.os }}-packages-${{ hashFiles('rust/.git/HEAD') }}
+
+    - name: Prepare VM
+      run: |
+        mkdir vm
+        sudo mount debian-m68k.img vm
+        sudo cp $(which qemu-m68k-static) vm/usr/bin/
+
+    - name: Build
+      run: |
+        ./y.sh prepare --only-libcore --cross
+        ./y.sh build --target-triple m68k-unknown-linux-gnu
+        CG_GCC_TEST_TARGET=m68k-unknown-linux-gnu cargo test
+        ./clean_all.sh
+
+    - name: Prepare dependencies
+      run: |
+        git config --global user.email "user@example.com"
+        git config --global user.name "User"
+        ./y.sh prepare --cross
+
+    # Compile is a separate step, as the actions-rs/cargo action supports error annotations
+    - name: Compile
+      uses: actions-rs/cargo@v1.0.3
+      with:
+        command: build
+        args: --release
+
+    - name: Add more failing tests because the sysroot is not compiled with LTO
+      run: cat failing-non-lto-tests.txt >> failing-ui-tests.txt
+
+    - name: Run tests
+      run: |
+        ./test.sh --release --clean --build-sysroot ${{ matrix.commands }}
diff --git a/compiler/rustc_codegen_gcc/.github/workflows/release.yml b/compiler/rustc_codegen_gcc/.github/workflows/release.yml
index c4e99469b..ae1134177 100644
--- a/compiler/rustc_codegen_gcc/.github/workflows/release.yml
+++ b/compiler/rustc_codegen_gcc/.github/workflows/release.yml
@@ -18,8 +18,6 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        libgccjit_version:
-          - { gcc: "libgccjit.so", artifacts_branch: "master" }
         commands: [
           "--test-successful-rustc --nb-parts 2 --current-part 0",
           "--test-successful-rustc --nb-parts 2 --current-part 1",
@@ -28,11 +26,6 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - uses: actions/checkout@v3
-      with:
-        repository: llvm/llvm-project
-        path: llvm
-
     - name: Install packages
       run: sudo apt-get install ninja-build ripgrep
 
@@ -40,18 +33,17 @@ jobs:
       uses: dawidd6/action-download-artifact@v2
       with:
           workflow: main.yml
-          name: ${{ matrix.libgccjit_version.gcc }}
-          path: gcc-build
+          name: gcc-13
+          path: gcc-13
           repo: antoyo/gcc
-          branch: ${{ matrix.libgccjit_version.artifacts_branch }}
+          branch: "master"
           event: push
           search_artifacts: true # Because, instead, the action only check the last job ran and that won't work since we want multiple artifacts.
 
     - name: Setup path to libgccjit
       run: |
-          echo $(readlink -f gcc-build) > gcc_path
-          # NOTE: the filename is still libgccjit.so even when the artifact name is different.
-          ln gcc-build/libgccjit.so gcc-build/libgccjit.so.0
+          sudo dpkg --force-overwrite -i gcc-13/gcc-13.deb
+          echo /usr/lib/ > gcc_path
 
     - name: Set env
       run: |
@@ -59,9 +51,6 @@ jobs:
         echo "LD_LIBRARY_PATH=$(cat gcc_path)" >> $GITHUB_ENV
         echo "workspace="$GITHUB_WORKSPACE >> $GITHUB_ENV
 
-    - name: Set RUST_COMPILER_RT_ROOT
-      run: echo "RUST_COMPILER_RT_ROOT="${{ env.workspace }}/llvm/compiler-rt >> $GITHUB_ENV
-
     - name: Cache cargo installed crates
       uses: actions/cache@v3
       with:
@@ -88,8 +77,8 @@ jobs:
 
     - name: Build
       run: |
-        ./prepare_build.sh
-        ./build.sh --release --release-sysroot
+        ./y.sh prepare --only-libcore
+        EMBED_LTO_BITCODE=1 ./y.sh build --release --release-sysroot
         cargo test
         ./clean_all.sh
 
@@ -97,7 +86,9 @@ jobs:
       run: |
         git config --global user.email "user@example.com"
         git config --global user.name "User"
-        ./prepare.sh
+        ./y.sh prepare
+        # FIXME(antoyo): we cannot enable LTO for stdarch tests currently because of some failing LTO tests using proc-macros.
+        echo -n 'lto = "fat"' >> build_sysroot/Cargo.toml
 
     # Compile is a separate step, as the actions-rs/cargo action supports error annotations
     - name: Compile
@@ -106,6 +97,9 @@ jobs:
         command: build
         args: --release
 
+    - name: Add more failing tests because of undefined symbol errors (FIXME)
+      run: cat failing-lto-tests.txt >> failing-ui-tests.txt
+
     - name: Run tests
       run: |
-        ./test.sh --release --clean --release-sysroot --build-sysroot ${{ matrix.commands }}
+        EMBED_LTO_BITCODE=1 ./test.sh --release --clean --release-sysroot --build-sysroot ${{ matrix.commands }}
diff --git a/compiler/rustc_codegen_gcc/.github/workflows/stdarch.yml b/compiler/rustc_codegen_gcc/.github/workflows/stdarch.yml
index 556c64448..28ac3cb65 100644
--- a/compiler/rustc_codegen_gcc/.github/workflows/stdarch.yml
+++ b/compiler/rustc_codegen_gcc/.github/workflows/stdarch.yml
@@ -18,8 +18,6 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        libgccjit_version:
-          - { gcc: "libgccjit.so", artifacts_branch: "master" }
         cargo_runner: [
           "sde -future -rtm_mode full --",
           "",
@@ -28,11 +26,6 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - uses: actions/checkout@v3
-      with:
-        repository: llvm/llvm-project
-        path: llvm
-
     - name: Install packages
       run: sudo apt-get install ninja-build ripgrep
 
@@ -54,18 +47,17 @@ jobs:
       uses: dawidd6/action-download-artifact@v2
       with:
           workflow: main.yml
-          name: ${{ matrix.libgccjit_version.gcc }}
-          path: gcc-build
+          name: gcc-13
+          path: gcc-13
           repo: antoyo/gcc
-          branch: ${{ matrix.libgccjit_version.artifacts_branch }}
+          branch: "master"
           event: push
           search_artifacts: true # Because, instead, the action only check the last job ran and that won't work since we want multiple artifacts.
 
     - name: Setup path to libgccjit
       run: |
-          echo $(readlink -f gcc-build) > gcc_path
-          # NOTE: the filename is still libgccjit.so even when the artifact name is different.
-          ln gcc-build/libgccjit.so gcc-build/libgccjit.so.0
+          sudo dpkg --force-overwrite -i gcc-13/gcc-13.deb
+          echo /usr/lib/ > gcc_path
 
     - name: Set env
       run: |
@@ -73,9 +65,6 @@ jobs:
         echo "LD_LIBRARY_PATH=$(cat gcc_path)" >> $GITHUB_ENV
         echo "workspace="$GITHUB_WORKSPACE >> $GITHUB_ENV
 
-    - name: Set RUST_COMPILER_RT_ROOT
-      run: echo "RUST_COMPILER_RT_ROOT="${{ env.workspace }}/llvm/compiler-rt >> $GITHUB_ENV
-
     - name: Cache cargo installed crates
       uses: actions/cache@v3
       with:
@@ -102,8 +91,8 @@ jobs:
 
     - name: Build
       run: |
-        ./prepare_build.sh
-        ./build.sh --release --release-sysroot
+        ./y.sh prepare --only-libcore
+        ./y.sh build --release --release-sysroot
         cargo test
 
     - name: Clean
@@ -115,7 +104,7 @@ jobs:
       run: |
         git config --global user.email "user@example.com"
         git config --global user.name "User"
-        ./prepare.sh
+        ./y.sh prepare
 
     # Compile is a separate step, as the actions-rs/cargo action supports error annotations
     - name: Compile
@@ -133,10 +122,11 @@ jobs:
       if: ${{ !matrix.cargo_runner }}
       run: |
         cd build_sysroot/sysroot_src/library/stdarch/
-        CHANNEL=release TARGET=x86_64-unknown-linux-gnu ../../../../cargo.sh test
+        CHANNEL=release TARGET=x86_64-unknown-linux-gnu CG_RUSTFLAGS="-Ainternal_features" ../../../../cargo.sh test
 
     - name: Run stdarch tests
       if: ${{ matrix.cargo_runner }}
       run: |
         cd build_sysroot/sysroot_src/library/stdarch/
-        STDARCH_TEST_EVERYTHING=1 CHANNEL=release CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUNNER="${{ matrix.cargo_runner }}" TARGET=x86_64-unknown-linux-gnu ../../../../cargo.sh test -- --skip rtm --skip tbm --skip sse4a
+        # FIXME: these tests fail when the sysroot is compiled with LTO because of a missing symbol in proc-macro.
+        STDARCH_TEST_EVERYTHING=1 CHANNEL=release CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUNNER="${{ matrix.cargo_runner }}" TARGET=x86_64-unknown-linux-gnu CG_RUSTFLAGS="-Ainternal_features" ../../../../cargo.sh test -- --skip rtm --skip tbm --skip sse4a