[code-simplifier] refactor: standardize benchmark warm-up comments and add missing warm-up (#22464 follow-up)

[github-actions]

Follow-up cleanup to #22464, which added warm-up phases to benchmarks.

Files Simplified

• pkg/workflow/compiler_performance_benchmark_test.go — consistent warm-up patterns across all 7 benchmarks

Improvements Made

1. Unified warm-up comment phrasing

Three different comment styles existed after #22464:

• "Warm up: run once before timing to prime one-time caches (schema compilation, etc.)" (×3)
• "Warm up: run once before timing to initialize one-time caches\n// (schema compilation, regex caches) so they don't skew per-op metrics." (×1)
• "Warm up: prime the schema compilation cache before timed measurement." (×2)

All 7 benchmarks now use the same phrasing.

2. Added missing warm-up to BenchmarkYAMLGeneration

BenchmarkYAMLGeneration was the only benchmark without a warm-up phase or b.ResetTimer() call, even though it runs compiler.CompileWorkflow (which involves schema compilation). Added warm-up + b.ResetTimer() for measurement accuracy consistent with all other benchmarks.

3. Removed redundant inline comment

// Track memory allocations before the benchmark loop in BenchmarkCompileMemoryUsage was redundant — b.ReportAllocs() already conveys this intent.

Changes Based On

• #22464 — perf: fix BenchmarkCompileMemoryUsage regression (+81.9%)

Testing

• ✅ Benchmarks execute successfully (go test -bench BenchmarkCompileSimpleWorkflow|BenchmarkYAMLGeneration -benchtime=1x)
• ✅ Unit tests pass (go test -run TestCompile ./pkg/workflow/)
• ✅ Build succeeds (go build ./pkg/workflow/)
• ✅ No functional changes — benchmark behavior is identical

Generated by Code Simplifier · ◷

• expires on Mar 24, 2026, 7:00 PM UTC

[Copilot]

Pull request overview

Follow-up cleanup to standardize benchmark warm-up comments and ensure BenchmarkYAMLGeneration includes a warm-up + b.ResetTimer() for more accurate measurements.

Changes:

• Standardized warm-up comment phrasing across benchmarks in compiler_performance_benchmark_test.go.
• Added a warm-up compile + b.ResetTimer() to BenchmarkYAMLGeneration.
• Removed a redundant “Track memory allocations” inline comment (since b.ReportAllocs() already conveys this).

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[Copilot]

The warm-up compile ignores the returned error. If compilation starts failing, the benchmark will silently measure the error path (and still report results), which can be misleading. Consider checking the error in the warm-up call (and/or the timed loop) and calling b.Fatal on failure so the benchmark fails fast.

Suggested change

	_ = compiler.CompileWorkflow(testFile)
	b.ResetTimer()
	b.ReportAllocs()
	for b.Loop() {
	_ = compiler.CompileWorkflow(testFile)
	if err := compiler.CompileWorkflow(testFile); err != nil {
	b.Fatalf("warm-up compilation failed: %v", err)
	}
	b.ResetTimer()
	b.ReportAllocs()
	for b.Loop() {
	if err := compiler.CompileWorkflow(testFile); err != nil {
	b.Fatalf("benchmark compilation failed: %v", err)
	}