perf(compile): code cache (#26528)

Adds a lazily created code cache to `deno compile` by default.

The code cache is created on first run to a single file in the temp
directory and is only written once. After it's been written, the code
cache becomes read only on subsequent runs. Only the modules loaded
during startup are cached (dynamic imports are not code cached).

The code cache can be disabled by compiling with `--no-code-cache`.

7 files changed, 63 insertions, 0 deletions

diff --git a/tests/specs/compile/code_cache/__test__.jsonc b/tests/specs/compile/code_cache/__test__.jsonc
new file mode 100644
index 000000000..72353e27d
--- /dev/null
+++ b/tests/specs/compile/code_cache/__test__.jsonc
@@ -0,0 +1,32 @@
+{
+  "tempDir": true,
+  "steps": [{
+    "if": "unix",
+    "args": "compile --output using_code_cache --log-level=debug main.ts",
+    "output": "[WILDCARD]"
+  }, {
+    "if": "unix",
+    "commandName": "./using_code_cache",
+    "args": [],
+    "output": "first_run.out"
+  }, {
+    "if": "unix",
+    "commandName": "./using_code_cache",
+    "args": [],
+    "output": "second_run.out"
+  }, {
+    "if": "windows",
+    "args": "compile --output using_code_cache.exe --log-level=debug main.ts",
+    "output": "[WILDCARD]"
+  }, {
+    "if": "windows",
+    "commandName": "./using_code_cache.exe",
+    "args": [],
+    "output": "first_run.out"
+  }, {
+    "if": "windows",
+    "commandName": "./using_code_cache.exe",
+    "args": [],
+    "output": "second_run.out"
+  }]
+}
diff --git a/tests/specs/compile/code_cache/first_run.out b/tests/specs/compile/code_cache/first_run.out
new file mode 100644
index 000000000..ca13e088f
--- /dev/null
+++ b/tests/specs/compile/code_cache/first_run.out
@@ -0,0 +1 @@
+[WILDCARD]Serialized 9 code cache entries[WILDCARD]
\ No newline at end of file
diff --git a/tests/specs/compile/code_cache/main.ts b/tests/specs/compile/code_cache/main.ts
new file mode 100644
index 000000000..b1d552d30
--- /dev/null
+++ b/tests/specs/compile/code_cache/main.ts
@@ -0,0 +1,3 @@
+import { join } from "jsr:@std/url@0.220/join";
+
+console.log(join);
diff --git a/tests/specs/compile/code_cache/second_run.out b/tests/specs/compile/code_cache/second_run.out
new file mode 100644
index 000000000..5f6afcf7e
--- /dev/null
+++ b/tests/specs/compile/code_cache/second_run.out
@@ -0,0 +1 @@
+[WILDCARD]Loaded 9 code cache entries[WILDCARD][Function: join][WILDCARD]
\ No newline at end of file
diff --git a/tests/specs/compile/no_code_cache/__test__.jsonc b/tests/specs/compile/no_code_cache/__test__.jsonc
new file mode 100644
index 000000000..2589054ec
--- /dev/null
+++ b/tests/specs/compile/no_code_cache/__test__.jsonc
@@ -0,0 +1,22 @@
+{
+  "tempDir": true,
+  "steps": [{
+    "if": "unix",
+    "args": "compile --output no_code_cache --no-code-cache --log-level=debug main.ts",
+    "output": "[WILDCARD]"
+  }, {
+    "if": "unix",
+    "commandName": "./no_code_cache",
+    "args": [],
+    "output": "main.out"
+  }, {
+    "if": "windows",
+    "args": "compile --output no_code_cache.exe --no-code-cache --log-level=debug main.ts",
+    "output": "[WILDCARD]"
+  }, {
+    "if": "windows",
+    "commandName": "./no_code_cache.exe",
+    "args": [],
+    "output": "main.out"
+  }]
+}
diff --git a/tests/specs/compile/no_code_cache/main.out b/tests/specs/compile/no_code_cache/main.out
new file mode 100644
index 000000000..e91f13282
--- /dev/null
+++ b/tests/specs/compile/no_code_cache/main.out
@@ -0,0 +1 @@
+[WILDCARD]Code cache disabled.[WILDCARD]
\ No newline at end of file
diff --git a/tests/specs/compile/no_code_cache/main.ts b/tests/specs/compile/no_code_cache/main.ts
new file mode 100644
index 000000000..b1d552d30
--- /dev/null
+++ b/tests/specs/compile/no_code_cache/main.ts
@@ -0,0 +1,3 @@
+import { join } from "jsr:@std/url@0.220/join";
+
+console.log(join);