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Turn off speculative devirtualization by default. (#29359)

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Turn off speculative devirtualization by default. Add a flag to support enabling the pass.
Fixes rdar://58778959 and rdar://58429282
This commit is contained in:
Meghana Gupta
2020-01-24 10:23:06 -08:00
committed by GitHub
parent 5669985665
commit 5285bf7200
17 changed files with 40 additions and 24 deletions
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lib/Frontend/CompilerInvocation.cpp
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@@ -959,6 +959,7 @@ static bool ParseSILArgs(SILOptions &Opts, ArgList &Args,
Opts.EnableARCOptimizations &= !Args.hasArg(OPT_disable_arc_opts);
Opts.EnableOSSAOptimizations &= !Args.hasArg(OPT_disable_ossa_opts);
Opts.EnableSpeculativeDevirtualization |= Args.hasArg(OPT_enable_spec_devirt);
Opts.DisableSILPerfOptimizations |= Args.hasArg(OPT_disable_sil_perf_optzns);
Opts.CrossModuleOptimization |= Args.hasArg(OPT_CrossModuleOptimization);
Opts.VerifyAll |= Args.hasArg(OPT_sil_verify_all);