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Add frontend flags for developers to easily control copy propagation:

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-enable-copy-propagation: enables whatever form of copy propagation
 the current pipeline runs (mandatory-copy-propagation at -Onone,
 regular copy-propation at -O).

-disable-copy-propagation: similarly disables any form of copy
 propagation in the current pipelien.
This commit is contained in:
Andrew Trick
2021-03-02 20:31:59 -08:00
parent b689b1dabe
commit a77ced8423
5 changed files with 38 additions and 11 deletions
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2
lib/Frontend/CompilerInvocation.cpp
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@@ -1185,6 +1185,8 @@ static bool ParseSILArgs(SILOptions &Opts, ArgList &Args,
// -Ounchecked might also set removal of runtime asserts (cond_fail).
Opts.RemoveRuntimeAsserts |= Args.hasArg(OPT_RemoveRuntimeAsserts);
Opts.EnableCopyPropagation |= Args.hasArg(OPT_enable_copy_propagation);
Opts.DisableCopyPropagation |= Args.hasArg(OPT_disable_copy_propagation);
Opts.EnableARCOptimizations &= !Args.hasArg(OPT_disable_arc_opts);
Opts.EnableOSSAModules |= Args.hasArg(OPT_enable_ossa_modules);
Opts.EnableOSSAOptimizations &= !Args.hasArg(OPT_disable_ossa_opts);