GH-127154: Remove PGO and unknown-linux-gnu/clang from JIT CI (#127212)

.github/workflows/jit.yml

@@ -54,9 +54,7 @@ jobs:
           - x86_64-apple-darwin/clang
           - aarch64-apple-darwin/clang
           - x86_64-unknown-linux-gnu/gcc
-          - x86_64-unknown-linux-gnu/clang
           - aarch64-unknown-linux-gnu/gcc
-          - aarch64-unknown-linux-gnu/clang
         debug:
           - true
           - false
@@ -66,41 +64,24 @@ jobs:
           - target: i686-pc-windows-msvc/msvc
             architecture: Win32
             runner: windows-latest
-            compiler: msvc
           - target: x86_64-pc-windows-msvc/msvc
             architecture: x64
             runner: windows-latest
-            compiler: msvc
           - target: aarch64-pc-windows-msvc/msvc
             architecture: ARM64
             runner: windows-latest
-            compiler: msvc
           - target: x86_64-apple-darwin/clang
             architecture: x86_64
             runner: macos-13
-            compiler: clang
           - target: aarch64-apple-darwin/clang
             architecture: aarch64
             runner: macos-14
-            compiler: clang
           - target: x86_64-unknown-linux-gnu/gcc
             architecture: x86_64
             runner: ubuntu-22.04
-            compiler: gcc
-          - target: x86_64-unknown-linux-gnu/clang
-            architecture: x86_64
-            runner: ubuntu-22.04
-            compiler: clang
           - target: aarch64-unknown-linux-gnu/gcc
             architecture: aarch64
             runner: ubuntu-22.04
-            compiler: gcc
-          - target: aarch64-unknown-linux-gnu/clang
-            architecture: aarch64
-            runner: ubuntu-22.04
-            compiler: clang
-    env:
-      CC: ${{ matrix.compiler }}
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -111,10 +92,10 @@ jobs:
         if: runner.os == 'Windows' && matrix.architecture != 'ARM64'
         run: |
           choco install llvm --allow-downgrade --no-progress --version ${{ matrix.llvm }}.1.0
-          ./PCbuild/build.bat --experimental-jit ${{ matrix.debug && '-d' || '--pgo' }} -p ${{ matrix.architecture }}
+          ./PCbuild/build.bat --experimental-jit ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }}
           ./PCbuild/rt.bat ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }} -q --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
-      # No PGO or tests (yet):
+      # No tests (yet):
       - name: Emulated Windows
         if: runner.os == 'Windows' && matrix.architecture == 'ARM64'
         run: |
@@ -132,7 +113,7 @@ jobs:
           find /usr/local/bin -lname '*/Library/Frameworks/Python.framework/*' -delete
           brew install llvm@${{ matrix.llvm }}
           export SDKROOT="$(xcrun --show-sdk-path)"
-          ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--enable-optimizations --with-lto' }}
+          ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '' }}
           make all --jobs 4
           ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
@@ -141,7 +122,7 @@ jobs:
         run: |
           sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
           export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
-          ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--enable-optimizations --with-lto' }}
+          ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '' }}
           make all --jobs 4
           ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
@@ -156,13 +137,11 @@ jobs:
           make clean --jobs 4
           export HOST=${{ matrix.architecture }}-linux-gnu
           sudo apt install --yes "gcc-$HOST" qemu-user
-          ${{ !matrix.debug && matrix.compiler == 'clang' && './configure --enable-optimizations' || '' }}
-          ${{ !matrix.debug && matrix.compiler == 'clang' && 'make profile-run-stamp --jobs 4' || '' }}
           export QEMU_LD_PREFIX="/usr/$HOST"
-          CC="${{ matrix.compiler == 'clang' && 'clang --target=$HOST' || '$HOST-gcc' }}" \
-            CPP="$CC --preprocess" \
+          CC="$HOST-gcc" \
+            CPP="$HOST-gcc --preprocess" \
             HOSTRUNNER=qemu-${{ matrix.architecture }} \
-            ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '--with-lto' }} --build=x86_64-linux-gnu --host="$HOST" --with-build-python=../build/bin/python3 --with-pkg-config=no ac_cv_buggy_getaddrinfo=no ac_cv_file__dev_ptc=no ac_cv_file__dev_ptmx=yes
+            ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '' }} --build=x86_64-linux-gnu --host="$HOST" --with-build-python=../build/bin/python3 --with-pkg-config=no ac_cv_buggy_getaddrinfo=no ac_cv_file__dev_ptc=no ac_cv_file__dev_ptmx=yes
           make all --jobs 4
           ./python -m test --ignorefile=Tools/jit/ignore-tests-emulated-linux.txt --multiprocess 0 --timeout 4500 --verbose2 --verbose3