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Re-do tracing initialization and tests around calls

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Make `tracing` either `undefined` or the same namespace as before.
Switching all calls to `tracing?.___` means that there is no cost for
a call or the arguments when tracing is not used.  Comparing two runs
without tracing (27 runs, drop 5+5, avg rest) I get:

    master:
      42.59s user 1.00s system 165% cpu 26.372 total
    changed:
      42.01s user 0.982 system 165% cpu 26.039 total

(Makes it all private, so no api changes.)
This commit is contained in:
Eli Barzilay
2021-01-13 16:01:53 -05:00
parent 7de5d0b83a
commit f462576ac2
12 changed files with 107 additions and 114 deletions
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4
src/compiler/binder.ts
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@@ -174,14 +174,14 @@ namespace ts {
const binder = createBinder();
export function bindSourceFile(file: SourceFile, options: CompilerOptions) {
tracing.push(tracing.Phase.Bind, "bindSourceFile", { path: file.path }, /*separateBeginAndEnd*/ true);
tracing?.push(tracing.Phase.Bind, "bindSourceFile", { path: file.path }, /*separateBeginAndEnd*/ true);
performance.mark("beforeBind");
perfLogger.logStartBindFile("" + file.fileName);
binder(file, options);
perfLogger.logStopBindFile();
performance.mark("afterBind");
performance.measure("Bind", "beforeBind", "afterBind");
tracing.pop();
tracing?.pop();
}
function createBinder(): (file: SourceFile, options: CompilerOptions) => void {