feat: flamegraph helper script

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

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -eu
+
+PROFILER=../../../noir/noir-repo/target/debug/noir-profiler
+
+if [ ! -f $PROFILER ]; then
+    echo "Profiler not found, building profiler"
+    cd ../../../noir/noir-repo/tooling/profiler
+    cargo build
+    cd -
+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-${CONTRACT}"
+
+# Extract artifact for the specific function
+node ../extractFunctionAsNoirArtifact.js  "../target/${ARTIFACT_NAME}.json" $FUNCTION
+
+FUNCTION_ARTIFACT="${ARTIFACT_NAME}-${FUNCTION}.json"
+
+# Make flamegraph directory in ../target
+mkdir -p ../target/flamegraph
+
+# At last, generate the flamegraph
+$PROFILER gates-flamegraph --artifact-path ../target/$FUNCTION_ARTIFACT --backend-path ../../../barretenberg/cpp/build/bin/bb  --output ../target/flamegraph
+
+# serve the file over http
+echo "Serving flamegraph at http://0.0.0.0:8000/main.svg"
+python3 -m http.server --directory ../target/flamegraph 8000