New -O4 tree-level optimization passes, x86 peepholes, and supporting fixes

.github/workflows/ci.yml

@@ -0,0 +1,130 @@
+name: CI
+
+on:
+  workflow_dispatch:
+    inputs:
+      force_build:
+        description: 'Build even when HEAD already matches the nightly tag'
+        type: boolean
+        default: false
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    outputs:
+      should_build: ${{ steps.check.outputs.should_build }}
+    steps:
+      - name: Checkout HEAD only
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 1
+
+      - name: Fetch 'nightly' tag only
+        run: git fetch origin refs/tags/nightly:refs/tags/nightly || true
+
+      - name: Check for changes since nightly
+        id: check
+        run: |
+          if [ "${{ inputs.force_build }}" = "true" ]; then
+            echo "force_build=true requested, skipping HEAD vs nightly comparison"
+            echo "should_build=true" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+          if git rev-parse nightly >/dev/null 2>&1; then
+            nightly_commit=$(git rev-list -n 1 nightly)
+            head_commit=$(git rev-parse HEAD)
+            echo "Nightly tag commit: $nightly_commit"
+            echo "HEAD commit: $head_commit"
+            if [ "$nightly_commit" = "$head_commit" ]; then
+              echo "No new commits since nightly release"
+              echo "should_build=false" >> $GITHUB_OUTPUT
+            else
+              echo "New commits found since nightly release"
+              echo "should_build=true" >> $GITHUB_OUTPUT
+            fi
+          else
+            echo "No 'nightly' tag found - will build"
+            echo "should_build=true" >> $GITHUB_OUTPUT
+          fi
+
+  windows:
+    needs: check
+    if: needs.check.outputs.should_build == 'true'
+    uses: ./.github/workflows/windows.yml
+
+  linux:
+    needs: check
+    if: needs.check.outputs.should_build == 'true'
+    uses: ./.github/workflows/linux.yml
+
+  release:
+    needs: [windows, linux]
+    if: needs.windows.result == 'success' && needs.linux.result == 'success'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout HEAD only
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 1
+
+      - name: Download windows-bundle.zip
+        uses: actions/download-artifact@v4
+        with:
+          name: windows-bundle.zip
+
+      - name: Download windows-ppcx64.zip
+        uses: actions/download-artifact@v4
+        with:
+          name: windows-ppcx64.zip
+
+      - name: Download windows-ppcross386.zip
+        uses: actions/download-artifact@v4
+        with:
+          name: windows-ppcross386.zip
+
+      - name: Download linux-bundle.zip
+        uses: actions/download-artifact@v4
+        with:
+          name: linux-bundle.zip
+
+      - name: Download linux-ppcx64.zip
+        uses: actions/download-artifact@v4
+        with:
+          name: linux-ppcx64.zip
+
+      - name: Download linux-ppcross386.zip
+        uses: actions/download-artifact@v4
+        with:
+          name: linux-ppcross386.zip
+
+      - name: Prepare release notes
+        run: |
+          ts=$(TZ=Europe/Berlin date +"%Y-%m-%d %H:%M:%S CEST")
+          {
+            echo "FPC Unleashed nightly build"
+            echo
+            echo "Generated from commit: $GITHUB_SHA"
+            echo "Build time: $ts"
+          } > release-body.txt
+
+      - name: Publish nightly release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh release delete nightly --yes --cleanup-tag --repo "$GITHUB_REPOSITORY" 2>/dev/null || true
+          gh release create nightly \
+            --repo "$GITHUB_REPOSITORY" \
+            --target "$GITHUB_SHA" \
+            --title "FPC Unleashed nightly" \
+            --notes-file release-body.txt \
+            --prerelease \
+            windows-bundle.zip \
+            windows-ppcx64.zip \
+            windows-ppcross386.zip \
+            linux-bundle.zip \
+            linux-ppcx64.zip \
+            linux-ppcross386.zip

.github/workflows/linux.yml

@@ -0,0 +1,63 @@
+name: Linux
+
+on:
+  workflow_dispatch:
+  workflow_call:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Install bootstrap compiler
+      run: |
+        sudo rm -rf /var/lib/apt/lists/*
+        sudo apt-get clean
+        sudo apt-get update -o Acquire::Retries=3
+        sudo apt-get install -y --no-install-recommends fpc-3.2.2
+
+    - name: Checkout source
+      uses: actions/checkout@v3
+
+    - name: Build FPC x86_64 (native)
+      run: |
+        make distclean
+        make all CPU_TARGET=x86_64
+
+    - name: Install FPC x86_64
+      run: make install CPU_TARGET=x86_64 INSTALL_PREFIX=$PWD/fpc
+
+    - name: Build i386 cross-compiler
+      run: make crossinstall OS_TARGET=linux CPU_TARGET=i386 INSTALL_PREFIX=$PWD/fpc PP=$PWD/compiler/ppcx64
+
+    - name: Package artifacts
+      run: |
+        mv compiler/ppcx64 fpc/bin
+        mv compiler/ppcross386 fpc/bin
+        mv fpc/lib/fpc/3.3.1/units fpc/units
+        rm -rf fpc/lib
+        rm -rf fpc/share
+        zip -rq linux-bundle.zip fpc
+        zip -j linux-ppcx64.zip fpc/bin/ppcx64
+        zip -j linux-ppcross386.zip fpc/bin/ppcross386
+
+    - name: Upload linux-bundle.zip
+      uses: actions/upload-artifact@v4
+      with:
+        name: linux-bundle.zip
+        path: linux-bundle.zip
+        retention-days: 7
+
+    - name: Upload linux-ppcx64.zip
+      uses: actions/upload-artifact@v4
+      with:
+        name: linux-ppcx64.zip
+        path: linux-ppcx64.zip
+        retention-days: 7
+
+    - name: Upload linux-ppcross386.zip
+      uses: actions/upload-artifact@v4
+      with:
+        name: linux-ppcross386.zip
+        path: linux-ppcross386.zip
+        retention-days: 7

.github/workflows/windows.yml

@@ -0,0 +1,92 @@
+name: Windows
+
+on:
+  workflow_dispatch:
+  workflow_call:
+
+jobs:
+  build:
+    runs-on: windows-latest
+
+    steps:
+    - name: Download bootstrap FPC 3.2.2
+      run: |
+        curl -L -o fpc.exe https://downloads.freepascal.org/fpc/dist/3.2.2/i386-win32/fpc-3.2.2.i386-win32.exe
+      shell: cmd
+
+    - name: Verify bootstrap FPC hash
+      run: |
+        $expected = "7EC78B1790ECAC7685F440B17F9E03865BC09846B7C068A9270C4D37704B5AC8"
+        $actual = Get-FileHash -Algorithm SHA256 -Path "fpc.exe" | Select-Object -ExpandProperty Hash
+        Write-Host "Expected: $expected"
+        Write-Host "Actual:   $actual"
+        if ($actual -ne $expected) {
+          Write-Error "SHA256 mismatch! Aborting."
+          exit 1
+        }
+      shell: powershell
+
+    - name: Install bootstrap FPC compiler
+      run: fpc.exe /VERYSILENT /DIR="C:\fpc322"
+      shell: cmd
+
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Update PATH env
+      run: echo "C:\fpc322\bin\i386-win32" >> $env:GITHUB_PATH
+      shell: powershell
+
+    - name: Build FPC x86_64 (native)
+      run: |
+        make distclean
+        make all OS_TARGET=win64 CPU_TARGET=x86_64 PP=C:\fpc322\bin\i386-win32\ppc386.exe
+      shell: cmd
+
+    - name: Build FPC x86_64 (utils)
+      run: make utils OS_TARGET=win64 CPU_TARGET=x86_64 PP=%GITHUB_WORKSPACE%\compiler\ppcx64.exe
+      shell: cmd
+
+    - name: Install FPC x86_64
+      run: make install OS_TARGET=win64 CPU_TARGET=x86_64 INSTALL_PREFIX=C:\fpc PP=compiler\ppcx64.exe
+      shell: cmd
+
+    - name: Build i386 cross-compiler
+      run: |
+        make crossinstall OS_TARGET=win32 CPU_TARGET=i386 INSTALL_PREFIX=C:\fpc PP=C:\fpc\bin\x86_64-win64\ppcx64.exe OPT="-dFPC_SOFT_FPUX80"
+      shell: cmd
+
+    - name: Cleanup
+      run: Remove-Item -Path 'C:\fpc\bin\i386-win32' -Recurse -Force
+      shell: powershell
+
+    - name: Package artifacts
+      run: |
+        powershell -Command "Remove-Item -Recurse -Force 'C:\fpc\doc','C:\fpc\examples','C:\fpc\fpmkinst','C:\fpc\msg'"
+        pushd C:\
+        "C:\Program Files\7-Zip\7z.exe" a -tzip -mx=3 -bd "%GITHUB_WORKSPACE%\windows-bundle.zip" fpc >nul
+        popd
+        "C:\Program Files\7-Zip\7z.exe" a -tzip -mx=3 -bd "windows-ppcx64.zip" "C:\fpc\bin\x86_64-win64\ppcx64.exe" >nul
+        "C:\Program Files\7-Zip\7z.exe" a -tzip -mx=3 -bd "windows-ppcross386.zip" "C:\fpc\bin\x86_64-win64\ppcross386.exe" >nul
+      shell: cmd
+
+    - name: Upload windows-bundle.zip
+      uses: actions/upload-artifact@v4
+      with:
+        name: windows-bundle.zip
+        path: windows-bundle.zip
+        retention-days: 7
+
+    - name: Upload windows-ppcx64.zip
+      uses: actions/upload-artifact@v4
+      with:
+        name: windows-ppcx64.zip
+        path: windows-ppcx64.zip
+        retention-days: 7
+
+    - name: Upload windows-ppcross386.zip
+      uses: actions/upload-artifact@v4
+      with:
+        name: windows-ppcross386.zip
+        path: windows-ppcross386.zip
+        retention-days: 7