Find the fastest safe build for real C++ projects.

for (const auto& row : report) {
  out << row.symbol << "," << row.price << std::endl;
}

// Candidate to measure:
out << row.symbol << "," << row.price << '\n';

std::endl flushes the stream. TurboBuild flags it when it appears in likely hot paths.

bool has_prefix(const std::string& value,
                const std::string& prefix) {
  return value.rfind(prefix, 0) == 0;
}

// Candidate to measure:
bool has_prefix(std::string_view value,
                std::string_view prefix) {
  return value.starts_with(prefix);
}

TurboBuild highlights avoidable string copies and suggests a measured experiment, not an automatic rewrite.

struct Particle {
  float x, y, z;
  float vx, vy, vz;
};

std::vector<Particle> particles;

// Candidate for hot loops:
struct ParticlesSoA {
  std::vector<float> x, y, z;
  std::vector<float> vx, vy, vz;
};

Cache-sensitive layouts are reported as high-impact candidates when profiling points at tight loops.

Safe candidates:
  -O2
  -O3
  -Os
  -Oz
  -O2 -flto

Explicit opt-in only:
  -Ofast
  -ffast-math
  -march=native

Semantic-changing or portability-changing flags stay blocked unless the team opts in.