diff options
Diffstat (limited to 'src/tools/optimization-options.h')
| -rw-r--r-- | src/tools/optimization-options.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/tools/optimization-options.h b/src/tools/optimization-options.h index 9fbba88cb..abe3bcd6d 100644 --- a/src/tools/optimization-options.h +++ b/src/tools/optimization-options.h @@ -42,27 +42,34 @@ struct OptimizationOptions : public Options { passOptions.optimizeLevel = 0; passOptions.shrinkLevel = 0; }) - .add("", "-O1", "execute -O1 optimization passes", + .add("", "-O1", "execute -O1 optimization passes (quick&useful opts, useful for iteration builds)", Options::Arguments::Zero, [this](Options*, const std::string&) { passOptions.optimizeLevel = 1; passOptions.shrinkLevel = 0; passes.push_back(DEFAULT_OPT_PASSES); }) - .add("", "-O2", "execute -O2 optimization passes", + .add("", "-O2", "execute -O2 optimization passes (most opts, generally gets most perf)", Options::Arguments::Zero, [this](Options*, const std::string&) { passOptions.optimizeLevel = 2; passOptions.shrinkLevel = 0; passes.push_back(DEFAULT_OPT_PASSES); }) - .add("", "-O3", "execute -O3 optimization passes", + .add("", "-O3", "execute -O3 optimization passes (spends potentially a lot of time optimizing)", Options::Arguments::Zero, [this](Options*, const std::string&) { passOptions.optimizeLevel = 3; passOptions.shrinkLevel = 0; passes.push_back(DEFAULT_OPT_PASSES); }) + .add("", "-O4", "execute -O4 optimization passes (also flatten the IR, which can take a lot more time and memory, but is useful on more nested / complex / less-optimized input)", + Options::Arguments::Zero, + [this](Options*, const std::string&) { + passOptions.optimizeLevel = 4; + passOptions.shrinkLevel = 0; + passes.push_back(DEFAULT_OPT_PASSES); + }) .add("", "-Os", "execute default optimization passes, focusing on code size", Options::Arguments::Zero, [this](Options*, const std::string&) { |