[llvm] Workflows: Use new depot runners for x86 Linux release builds (PR #117111)

[Tom Stellard via llvm-commits]

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@@ -144,12 +146,25 @@ jobs:
 
         echo "target-cmake-flags=$target_cmake_flags" >> $GITHUB_OUTPUT
         echo "build-flang=$build_flang" >> $GITHUB_OUTPUT
+        case "${{ inputs.runs-on }}" in
+          ubuntu-22.04)
+            runs_on="depot-${{ inputs.runs-on }}-16"
+            multi_stage="false"
+            ;;
+          *)
+            runs_on="${{ inputs.runs-on }}"
+            multi_stage="true"
+            ;;
+        esac
+        echo "runs-on=$runs_on" >> $GITHUB_OUTPUT
+        echo "multi-stage=$multi_stage" >> $GITHUB_OUTPUT
 
   build-stage1:
     name: "Build Stage 1"
     needs: prepare
-    if: github.repository == 'llvm/llvm-project'
-    runs-on: ${{ inputs.runs-on }}
+    if: >-
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tstellar wrote:

I think this came from a debugging commit I did, I can change it back.

https://github.com/llvm/llvm-project/pull/117111