Added string benchmarks, and updated dependencies (#491)

Cargo.lock

@@ -211,12 +211,13 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-queue"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab6bffe714b6bb07e42f201352c34f51fefd355ace793f9e638ebd52d23f98d2"
+checksum = "774ba60a54c213d409d5353bda12d49cd68d14e45036a285234c8d6f91f92570"
 dependencies = [
  "cfg-if",
  "crossbeam-utils",
+ "maybe-uninit",
 ]
 
 [[package]]
@@ -307,9 +308,9 @@ dependencies = [
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.13"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91780f809e750b0a89f5544be56617ff6b1227ee485bcb06ebe10cdf89bd3b71"
+checksum = "b9586eedd4ce6b3c498bc3b4dd92fc9f11166aa908a914071953768066c67909"
 dependencies = [
  "libc",
 ]
@@ -434,9 +435,9 @@ dependencies = [
 
 [[package]]
 name = "num-bigint"
-version = "0.2.6"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "090c7f9998ee0ff65aa5b723e4009f7b217707f1fb5ea551329cc4d6231fb304"
+checksum = "b7f3fc75e3697059fb1bc465e3d8cca6cf92f56854f201158b3f9c77d5a3cfa0"
 dependencies = [
  "autocfg",
  "num-integer",
@@ -446,9 +447,9 @@ dependencies = [
 
 [[package]]
 name = "num-integer"
-version = "0.1.42"
+version = "0.1.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f6ea62e9d81a77cd3ee9a2a5b9b609447857f3d358704331e4ef39eb247fcba"
+checksum = "8d59457e662d541ba17869cf51cf177c0b5f0cbf476c66bdc90bf1edac4f875b"
 dependencies = [
  "autocfg",
  "num-traits",
@@ -456,9 +457,9 @@ dependencies = [
 
 [[package]]
 name = "num-traits"
-version = "0.2.11"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c62be47e61d1842b9170f0fdeec8eba98e60e90e5446449a0545e5152acd7096"
+checksum = "ac267bcc07f48ee5f8935ab0d24f316fb722d7a1292e2913f0cc196b29ffd611"
 dependencies = [
  "autocfg",
 ]
@@ -481,9 +482,9 @@ checksum = "0b631f7e854af39a1739f401cf34a8a013dfe09eac4fa4dba91e9768bd28168d"
 
 [[package]]
 name = "oorandom"
-version = "11.1.1"
+version = "11.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94af325bc33c7f60191be4e2c984d48aaa21e2854f473b85398344b60c9b6358"
+checksum = "a170cebd8021a008ea92e4db85a72f80b35df514ec664b296fdcbb654eac0b2c"
 
 [[package]]
 name = "parking_lot"

boa/Cargo.toml

@@ -14,14 +14,14 @@ edition = "2018"
 profiler = ["measureme", "once_cell"]
 
 [dependencies]
-gc = { version = "0.3.5", features = ["derive"] }
-serde_json = "1.0.53"
+gc = { version = "0.3.6", features = ["derive"] }
+serde_json = "1.0.55"
 rand = "0.7.3"
-num-traits = "0.2.11"
+num-traits = "0.2.12"
 regex = "1.3.9"
 rustc-hash = "1.1.0"
-num-bigint = { version = "0.2.6", features = ["serde"] }
-num-integer = "0.1.42"
+num-bigint = { version = "0.3.0", features = ["serde"] }
+num-integer = "0.1.43"
 bitflags = "1.2.1"
 
 # Optional Dependencies

boa/benches/exec.rs

@@ -381,6 +381,76 @@ fn array_pop(c: &mut Criterion) {
     });
 }
 
+static STRING_CONCAT: &str = r#"
+(function(){
+    var a = "hello";
+    var b = "world";
+
+    var c = a + b;
+})();
+"#;
+
+fn string_concat(c: &mut Criterion) {
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+
+    let mut lexer = Lexer::new(black_box(STRING_CONCAT));
+    lexer.lex().expect("failed to lex");
+
+    let nodes = Parser::new(&black_box(lexer.tokens)).parse_all().unwrap();
+
+    c.bench_function("String concatenation (Execution)", move |b| {
+        b.iter(|| black_box(&nodes).run(&mut engine).unwrap())
+    });
+}
+
+static STRING_COMPARE: &str = r#"
+(function(){
+    var a = "hello";
+    var b = "world";
+
+    var c = a == b;
+
+    var d = b;
+    var e = d == b;
+})();
+"#;
+
+fn string_compare(c: &mut Criterion) {
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+
+    let mut lexer = Lexer::new(black_box(STRING_COMPARE));
+    lexer.lex().expect("failed to lex");
+
+    let nodes = Parser::new(&black_box(lexer.tokens)).parse_all().unwrap();
+
+    c.bench_function("String comparison (Execution)", move |b| {
+        b.iter(|| black_box(&nodes).run(&mut engine).unwrap())
+    });
+}
+
+static STRING_COPY: &str = r#"
+(function(){
+    var a = "hello";
+    var b = a;
+})();
+"#;
+
+fn string_copy(c: &mut Criterion) {
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+
+    let mut lexer = Lexer::new(black_box(STRING_COPY));
+    lexer.lex().expect("failed to lex");
+
+    let nodes = Parser::new(&black_box(lexer.tokens)).parse_all().unwrap();
+
+    c.bench_function("String copy (Execution)", move |b| {
+        b.iter(|| black_box(&nodes).run(&mut engine).unwrap())
+    });
+}
+
 criterion_group!(
     execution,
     create_realm,
@@ -397,5 +467,8 @@ criterion_group!(
     regexp_creation,
     regexp_literal,
     regexp,
+    string_concat,
+    string_compare,
+    string_copy,
 );
 criterion_main!(execution);

boa_cli/Cargo.toml

@@ -13,7 +13,7 @@ edition = "2018"
 [dependencies]
 Boa = { path = "../boa", features = ["serde"] }
 structopt = "0.3.14"
-serde_json = "1.0.53"
+serde_json = "1.0.55"
 
 [target.x86_64-unknown-linux-gnu.dependencies]
 jemallocator = "0.3.2"