[llvm] workflows/release-binaries: Enable PGO (PR #124442)

[Aiden Grossman via llvm-commits]

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@@ -130,9 +129,6 @@ jobs:
           echo ccache=sccache >> $GITHUB_OUTPUT
         fi
 
-        # Detect necessary CMake flags
-        echo "enable-pgo=false" >> $GITHUB_OUTPUT
-        target_cmake_flags="-DLLVM_RELEASE_ENABLE_PGO=OFF"
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boomanaiden154 wrote:

I'm assuming dropping this flag is what actually is what enables the release builds to be done with PGO?

I'm not seeing how this plumbing works though. This flag doesn't seem to exist anywhere else in the codebase (although Github search could just be lying to me).

https://github.com/llvm/llvm-project/pull/124442