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Cling -O2 with minimal inlining #465

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Cling -O2 with minimal inlining #465

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7a7c9b1
Use default inliner but keep inlining to a minimum.
Axel-Naumann Mar 27, 2017
306f5de
Turn optimizations on! (Except for full inlining...)
Axel-Naumann Mar 27, 2017
e9a0246
Style.
Axel-Naumann Mar 27, 2017
22fda7a
Keep track of immediately emitted deferred decls.
Axel-Naumann Mar 28, 2017
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Turn optimizations on! (Except for full inlining...)
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@Axel-Naumann
Axel-Naumann committed Mar 27, 2017
commit 306f5de3b5953224f382c43cd12a46e29d73f41f
6 changes: 2 additions & 4 deletions interpreter/cling/lib/Interpreter/BackendPasses.cpp
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Expand Up @@ -42,7 +42,8 @@ void BackendPasses::CreatePasses(llvm::Module& M)
// DON'T: we will not find our symbols...
//CGOpts_.CXXCtorDtorAliases = 1;

// Default clang -O2 on Linux 64bit also has:
// Default clang -O2 on Linux 64bit also has the following, but see
// CIFactory.cpp.
#if 0
CGOpts_.DisableFPElim = 0;
CGOpts_.DiscardValueNames = 1;
Expand Down Expand Up @@ -71,9 +72,6 @@ void BackendPasses::CreatePasses(llvm::Module& M)
// Inlining = CGOpts.NoInlining;
}

OptLevel = 0; // we need to keep even "unused" values - until we
// feed incremental modules into the JIT.

llvm::PassManagerBuilder PMBuilder;
PMBuilder.OptLevel = OptLevel;
PMBuilder.SizeLevel = m_CGOpts.OptimizeSize;
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9 changes: 9 additions & 0 deletions interpreter/cling/lib/Interpreter/CIFactory.cpp
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Expand Up @@ -934,6 +934,15 @@ static void stringifyPreprocSetting(PreprocessorOptions& PPOpts,
CI->getCodeGenOpts().EmitCodeView = 1;
CI->getCodeGenOpts().CXXCtorDtorAliases = 1;
#endif
// Reduce amount of emitted symbols by optimizing more.
CI->getCodeGenOpts().OptimizationLevel = 2;
// Taken from a -O2 run of clang:
CI->getCodeGenOpts().DiscardValueNames = 1;
CI->getCodeGenOpts().OmitLeafFramePointer = 1;
CI->getCodeGenOpts().UnrollLoops = 1;
CI->getCodeGenOpts().VectorizeLoop = 1;
CI->getCodeGenOpts().VectorizeSLP = 1;

//CI->getCodeGenOpts().setDebugInfo(clang::CodeGenOptions::FullDebugInfo);
// CI->getCodeGenOpts().EmitDeclMetadata = 1; // For unloading, for later
CI->getCodeGenOpts().CXXCtorDtorAliases = 0; // aliasing the complete
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