feat: flamegraph helper script

noir-projects/noir-contracts/scripts/flamegraph.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+set -eu
+
+# If first  arg is -h or --help, print usage
+if [ "$1" == "-h" ] || [ "$1" == "--help" ]; then
+    echo "Usage: $0 <contract> <function>"
+    echo "e.g.: $0 Token transfer"
+    echo "Generates a flamegraph for the given contract and function"
+    exit 0
+fi
+
+# Get the directory of the script
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+PROFILER="$SCRIPT_DIR/../../../noir/noir-repo/target/debug/noir-profiler"
+
+if [ ! -f $PROFILER ]; then
+    echo "Profiler not found, building profiler"
+    cd "$SCRIPT_DIR/../../../noir/noir-repo/tooling/profiler"
+    cargo build
+    cd "$SCRIPT_DIR"
+fi
+
+# first console arg is contract name in camel case (e.g. TokenBridge)
+CONTRACT=$1
+
+# second console arg is the contract function
+FUNCTION=$2
+
+# convert contract name to following format: token_bridge_contract-TokenBridge.json
+ARTIFACT=$(echo "$CONTRACT" | sed -r 's/^([A-Z])/\L\1/; s/([a-z0-9])([A-Z])/\1_\L\2/g')
+ARTIFACT_NAME="${ARTIFACT}_contract-${CONTRACT}"
+
+# Extract artifact for the specific function
+node "$SCRIPT_DIR/../extractFunctionAsNoirArtifact.js" "$SCRIPT_DIR/../target/${ARTIFACT_NAME}.json" $FUNCTION
+
+FUNCTION_ARTIFACT="${ARTIFACT_NAME}-${FUNCTION}.json"
+
+# We create dest directory and use it as an output for the generated main.svg file
+mkdir -p "$SCRIPT_DIR/../dest"
+
+# At last, generate the flamegraph
+$PROFILER gates-flamegraph --artifact-path "$SCRIPT_DIR/../target/$FUNCTION_ARTIFACT" --backend-path "$SCRIPT_DIR/../../../barretenberg/cpp/build/bin/bb"  --output "$SCRIPT_DIR/../dest"
+
+# serve the file over http
+echo "Serving flamegraph at http://0.0.0.0:8000/main.svg"
+python3 -m http.server --directory "$SCRIPT_DIR/../dest" 8000