diff options
| -rw-r--r-- | tools/llc/llc.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp index 4d4a74c009..41ec815719 100644 --- a/tools/llc/llc.cpp +++ b/tools/llc/llc.cpp @@ -51,6 +51,11 @@ InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-")); static cl::opt<std::string> OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename")); +static cl::opt<unsigned> +TimeCompilations("time-compilations", cl::Hidden, cl::init(1u), + cl::value_desc("N"), + cl::desc("Repeat compilation N times for timing")); + // Determine optimization level. static cl::opt<char> OptLevel("O", @@ -71,6 +76,8 @@ DisableSimplifyLibCalls("disable-simplify-libcalls", cl::desc("Disable simplify-libcalls"), cl::init(false)); +static int compileModule(char**, LLVMContext&); + // GetFileNameRoot - Helper function to get the basename of a filename. static inline std::string GetFileNameRoot(const std::string &InputFilename) { @@ -181,6 +188,15 @@ int main(int argc, char **argv) { cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n"); + // Compile the module TimeCompilations times to give better compile time + // metrics. + for (unsigned I = TimeCompilations; I; --I) + if (int RetVal = compileModule(argv, Context)) + return RetVal; + return 0; +} + +static int compileModule(char **argv, LLVMContext &Context) { // Load the module to be compiled... SMDiagnostic Err; std::auto_ptr<Module> M; |