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author | Shuxin Yang <shuxin.llvm@gmail.com> | 2013-07-22 18:40:34 +0000 |
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committer | Shuxin Yang <shuxin.llvm@gmail.com> | 2013-07-22 18:40:34 +0000 |
commit | 8945f753edf14b998fe57fd0a8b675b61aeb0164 (patch) | |
tree | 18394c0af2a615cac9130461818210d6709d205e /tools/lto | |
parent | f01742d03fb034e50f2a7717fb1325644e02ca72 (diff) | |
download | external_llvm-8945f753edf14b998fe57fd0a8b675b61aeb0164.zip external_llvm-8945f753edf14b998fe57fd0a8b675b61aeb0164.tar.gz external_llvm-8945f753edf14b998fe57fd0a8b675b61aeb0164.tar.bz2 |
Initialize/Register LTO passes to enable flags like -print-after=<lto-pass>
There already have two "dead" functions, initialize{IPO|IPA}, defined for
similar purpose. I decide not to call these two functions for two reasons:
o. they don't cover all LTO passes (which will soon be separated into IPO
and post-IPO passes)
o. We have not yet figured out the right passes and the ordering for IPO
and post-IPO stages, meaning this change is only for the time being.
Since LTO passes are registered, we are now able to print IR before and
after particular point.
For OSX users:
--------------
"...-Wl,-mllvm -Wl,-print-after=<pass-name>" will print IR after the
specified pass.
For Other UNIX with GNU gold linker:
------------------------------------
"-Wl,-plugin-opt=-print-after=<pass-name>" should work.
(NOTE: no need for "-Wl,-mllvm")
Strip "-Wl," if flags are fed directly to linker instead of clang/clang++.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186853 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/lto')
-rw-r--r-- | tools/lto/LTOCodeGenerator.cpp | 32 | ||||
-rw-r--r-- | tools/lto/LTOCodeGenerator.h | 2 |
2 files changed, 34 insertions, 0 deletions
diff --git a/tools/lto/LTOCodeGenerator.cpp b/tools/lto/LTOCodeGenerator.cpp index c7d14af..6db4f31 100644 --- a/tools/lto/LTOCodeGenerator.cpp +++ b/tools/lto/LTOCodeGenerator.cpp @@ -24,6 +24,7 @@ #include "llvm/IR/DerivedTypes.h" #include "llvm/IR/LLVMContext.h" #include "llvm/IR/Module.h" +#include "llvm/InitializePasses.h" #include "llvm/Linker.h" #include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCContext.h" @@ -77,6 +78,7 @@ LTOCodeGenerator::LTOCodeGenerator() InitializeAllTargets(); InitializeAllTargetMCs(); InitializeAllAsmPrinters(); + initializeLTOPasses(); } LTOCodeGenerator::~LTOCodeGenerator() { @@ -89,6 +91,36 @@ LTOCodeGenerator::~LTOCodeGenerator() { free(*I); } +// Initialize LTO passes. Please keep this funciton in sync with +// PassManagerBuilder::populateLTOPassManager(), and make sure all LTO +// passes are initialized. +// +void LTOCodeGenerator::initializeLTOPasses() { + PassRegistry &R = *PassRegistry::getPassRegistry(); + + initializeInternalizePassPass(R); + initializeIPSCCPPass(R); + initializeGlobalOptPass(R); + initializeConstantMergePass(R); + initializeDAHPass(R); + initializeInstCombinerPass(R); + initializeSimpleInlinerPass(R); + initializePruneEHPass(R); + initializeGlobalDCEPass(R); + initializeArgPromotionPass(R); + initializeJumpThreadingPass(R); + initializeSROAPass(R); + initializeSROA_DTPass(R); + initializeSROA_SSAUpPass(R); + initializeFunctionAttrsPass(R); + initializeGlobalsModRefPass(R); + initializeLICMPass(R); + initializeGVNPass(R); + initializeMemCpyOptPass(R); + initializeDCEPass(R); + initializeCFGSimplifyPassPass(R); +} + bool LTOCodeGenerator::addModule(LTOModule* mod, std::string& errMsg) { bool ret = _linker.linkInModule(mod->getLLVVMModule(), &errMsg); diff --git a/tools/lto/LTOCodeGenerator.h b/tools/lto/LTOCodeGenerator.h index a4ade9f..bbe3239 100644 --- a/tools/lto/LTOCodeGenerator.h +++ b/tools/lto/LTOCodeGenerator.h @@ -56,6 +56,8 @@ struct LTOCodeGenerator { void setCodeGenDebugOptions(const char *opts); private: + void initializeLTOPasses(); + bool generateObjectFile(llvm::raw_ostream &out, std::string &errMsg); void applyScopeRestrictions(); void applyRestriction(llvm::GlobalValue &GV, |