From 42f8aee57ff1638e3f96abfe85212bbe49a2932e Mon Sep 17 00:00:00 2001
From: NiccoloN <niccolo.nicolosi@gmail.com>
Date: Mon, 30 Mar 2026 17:43:22 +0200
Subject: [PATCH] use ccache for raptor build

---
 .github/workflows/validate_operations.yml | 36 ++++++++++++++++-------
 1 file changed, 25 insertions(+), 11 deletions(-)

diff --git a/.github/workflows/validate_operations.yml b/.github/workflows/validate_operations.yml
index 8e6d46c..38061f3 100644
--- a/.github/workflows/validate_operations.yml
+++ b/.github/workflows/validate_operations.yml
@@ -5,6 +5,11 @@ env:
   PROTOBUF_REF: v34.0
   CMAKE_VERSION: 4.3.0
   MOLD_LINKER_FLAGS: -fuse-ld=mold
+  CCACHE_DIR: ${{ github.workspace }}/.ccache
+  CCACHE_MAXSIZE: 10G
+  CCACHE_BASEDIR: ${{ github.workspace }}
+  CCACHE_COMPILERCHECK: content
+  CCACHE_NOHASHDIR: "true"
 
 on:
   push:
@@ -24,7 +29,7 @@ jobs:
       - name: Install system dependencies
         run: |
           sudo apt update
-          sudo apt install -y cmake ninja-build build-essential mold curl ca-certificates
+          sudo apt install -y cmake ninja-build build-essential mold curl ca-certificates ccache
 
       - name: Install CMake
         run: |
@@ -69,34 +74,43 @@ jobs:
       - name: Install Python dependencies
         run: pip install numpy onnx colorama
 
-      - name: Restore Raptor Build Cache
-        id: restore-raptor-build-cache
-        uses: ./.github/actions/restore-raptor-build-cache
+      - name: Restore ccache
+        id: restore-ccache
+        uses: actions/cache/restore@v4
         with:
-          key: raptor-build-${{ runner.os }}-${{ github.ref_name }}-${{ env.LLVM_COMMIT }}-${{ env.PROTOBUF_REF }}-${{ env.CMAKE_VERSION }}-${{ github.sha }}
+          path: ${{ env.CCACHE_DIR }}
+          key: ccache-${{ runner.os }}-${{ github.ref_name }}-${{ env.LLVM_COMMIT }}-${{ env.PROTOBUF_REF }}-${{ env.CMAKE_VERSION }}-${{ github.sha }}
           restore-keys: |
-            raptor-build-${{ runner.os }}-${{ github.ref_name }}-${{ env.LLVM_COMMIT }}-${{ env.PROTOBUF_REF }}-${{ env.CMAKE_VERSION }}-
-            raptor-build-${{ runner.os }}-${{ env.LLVM_COMMIT }}-${{ env.PROTOBUF_REF }}-${{ env.CMAKE_VERSION }}-
+            ccache-${{ runner.os }}-${{ github.ref_name }}-${{ env.LLVM_COMMIT }}-${{ env.PROTOBUF_REF }}-${{ env.CMAKE_VERSION }}-
+            ccache-${{ runner.os }}-${{ env.LLVM_COMMIT }}-${{ env.PROTOBUF_REF }}-${{ env.CMAKE_VERSION }}-
 
       - name: Build Raptor
         id: build-raptor
         run: |
+          ccache --set-config=max_size=${CCACHE_MAXSIZE}
+          ccache --zero-stats
+          ccache --show-config
+          ccache --show-stats
+
           MLIR_DIR=$(pwd)/onnx-mlir/llvm-project/build/lib/cmake/mlir
           cmake -S . -B build -G Ninja \
             -DCMAKE_BUILD_TYPE=Debug \
             -DONNX_MLIR_ACCELERATORS=PIM \
+            -DONNX_MLIR_CCACHE_BUILD=ON \
             -DLLVM_ENABLE_ASSERTIONS=ON \
             -DMLIR_DIR=${MLIR_DIR} \
             -DCMAKE_EXE_LINKER_FLAGS="${MOLD_LINKER_FLAGS}" \
             -DCMAKE_SHARED_LINKER_FLAGS="${MOLD_LINKER_FLAGS}" \
             -DCMAKE_MODULE_LINKER_FLAGS="${MOLD_LINKER_FLAGS}"
           cmake --build build
+          ccache --show-stats
 
-      - name: Save Raptor Build Cache
-        if: steps.build-raptor.outcome == 'success' && steps.restore-raptor-build-cache.outputs.cache-hit != 'true'
-        uses: ./.github/actions/save-raptor-build-cache
+      - name: Save ccache
+        if: steps.build-raptor.outcome == 'success' && steps.restore-ccache.outputs.cache-hit != 'true'
+        uses: actions/cache/save@v4
         with:
-          key: raptor-build-${{ runner.os }}-${{ github.ref_name }}-${{ env.LLVM_COMMIT }}-${{ env.PROTOBUF_REF }}-${{ env.CMAKE_VERSION }}-${{ github.sha }}
+          path: ${{ env.CCACHE_DIR }}
+          key: ccache-${{ runner.os }}-${{ github.ref_name }}-${{ env.LLVM_COMMIT }}-${{ env.PROTOBUF_REF }}-${{ env.CMAKE_VERSION }}-${{ github.sha }}
 
       - name: Run validation
         run: |