Enable wasm optimizer from dfx 0.14.0 (#55)

.github/workflows/perf.yml

@@ -59,6 +59,7 @@ jobs:
           cd $(dfx cache show)
           wget https://github.com/dfinity/motoko/releases/download/$MOC_VERSION/motoko-linux64-$MOC_VERSION.tar.gz
           tar zxvf motoko-linux64-$MOC_VERSION.tar.gz
+          cargo install --git https://github.com/dfinity/ic-wasm.git
       - name: Start dfx
         run: |
           dfx start --background

README.md

@@ -48,3 +48,27 @@ Benchmark_name/
       src/
         lib.rs
 ```
+
+## Wasm Optimizer
+
+A Wasm optimizer is applied to each Wasm binary before instrumentation (except the GC benchmarks). The optimizer can be found in [ic-wasm](https://github.com/dfinity/ic-wasm), which wraps [wasm-opt](https://github.com/WebAssembly/binaryen).
+
+The following optimizations are applied:
+```
+ic-wasm -o <wasm> <wasm> shrink --optimize O3 --keep-name-section
+```
+
+Note that the name section is preserved in the optimization process. This is because the name section is used by the profiler to produce the flame graphs.
+
+For users who wish to use the optimizer, the easiest way is to enable it via a field in `dfx.json`:
+
+```
+{
+  "canisters": {
+    "my_canister": {
+      "optimize": "cycles"
+    }
+  }
+}
+```
+This, as in most real world uses, removes the name section to minimize the binary size.

collections/Makefile

@@ -9,13 +9,17 @@ motoko:
 	mops install; \
 	dfx canister create --all; \
 	dfx build; \
+	echo "Optimize with ic-wasm level 3"; \
+	for f in .dfx/local/canisters/*/*.wasm; do ic-wasm -o $$f $$f shrink --optimize O3 --keep-name-section; done; \
 	rm mops.toml; \
 	cd ..
 
 rust:
 	cd rust; \
 	dfx canister create --all; \
 	dfx build; \
+	echo "Optimize with ic-wasm level 3"; \
+	for f in .dfx/local/canisters/*/*.wasm; do ic-wasm -o $$f $$f shrink --optimize O3 --keep-name-section; done; \
 	cd ..
 
 build: motoko rust

dapps/Makefile

@@ -7,12 +7,16 @@ motoko:
 	cd motoko; \
 	dfx canister create --all; \
 	dfx build; \
+	echo "Optimize with ic-wasm level 3"; \
+	for f in .dfx/local/canisters/*/*.wasm; do ic-wasm -o $$f $$f shrink --optimize O3 --keep-name-section; done; \
 	cd ..
 
 rust:
 	cd rust; \
 	dfx canister create --all; \
 	dfx build; \
+	echo "Optimize with ic-wasm level 3"; \
+	for f in .dfx/local/canisters/*/*.wasm; do ic-wasm -o $$f $$f shrink --optimize O3 --keep-name-section; done; \
 	cd ..
 
 build: motoko rust

heartbeat/Makefile

@@ -9,13 +9,17 @@ motoko:
 	mops install; \
 	dfx canister create --all; \
 	dfx build; \
+	echo "Optimize with ic-wasm level 3"; \
+	for f in .dfx/local/canisters/*/*.wasm; do ic-wasm -o $$f $$f shrink --optimize O3 --keep-name-section; done; \
 	rm mops.toml; \
 	cd ..
 
 rust:
 	cd rust; \
 	dfx canister create --all; \
 	dfx build; \
+	echo "Optimize with ic-wasm level 3"; \
+	for f in .dfx/local/canisters/*/*.wasm; do ic-wasm -o $$f $$f shrink --optimize O3 --keep-name-section; done; \
 	cd ..
 
 build: motoko rust

motoko/Makefile

@@ -8,6 +8,8 @@ build:
 	mops install; \
 	dfx canister create --all; \
 	dfx build; \
+	echo "Optimize with ic-wasm level 3"; \
+	for f in .dfx/local/canisters/*/*.wasm; do ic-wasm -o $$f $$f shrink --optimize O3 --keep-name-section; done; \
 	rm mops.toml; \
 	cd ..
 

motoko/README.md

@@ -2,7 +2,7 @@
 
 Measure various features only available in Motoko.
 
-* Garbage Collection. Measure Motoko garbage collection cost using the [Triemap benchmark](https://github.com/dfinity/canister-profiling/blob/main/collections/motoko/src/triemap.mo). The max mem column reports `rts_max_live_size` after `generate` call. The cycle cost numbers reported here are garbage collection cost only. Some flamegraphs are truncated due to the 2M log size limit.
+* Garbage Collection. Measure Motoko garbage collection cost using the [Triemap benchmark](https://github.com/dfinity/canister-profiling/blob/main/collections/motoko/src/triemap.mo). The max mem column reports `rts_max_live_size` after `generate` call. The cycle cost numbers reported here are garbage collection cost only. Some flamegraphs are truncated due to the 2M log size limit. The `dfx`/`ic-wasm` optimizer is disabled for the garbage collection test cases due to how the optimizer affects function names, making profiling trickier.  
 
   - default. Compile with the default GC option. With the current GC scheduler, `generate` will trigger the copying GC. The rest of the methods will not trigger GC.
   - copying. Compile with `--force-gc --copying-gc`.

pub-sub/Makefile

@@ -7,12 +7,16 @@ motoko:
 	cd motoko; \
 	dfx canister create --all; \
 	dfx build; \
+	echo "Optimize with ic-wasm level 3"; \
+	for f in .dfx/local/canisters/*/*.wasm; do ic-wasm -o $$f $$f shrink --optimize O3 --keep-name-section; done; \
 	cd ..
 
 rust:
 	cd rust; \
 	dfx canister create --all; \
 	dfx build; \
+	echo "Optimize with ic-wasm level 3"; \
+	for f in .dfx/local/canisters/*/*.wasm; do ic-wasm -o $$f $$f shrink --optimize O3 --keep-name-section; done; \
 	cd ..
 
 build: motoko rust