LLVM-Examples

LLVM Examples and Code samples. LLVM Passes.

Examples & Implementations :

• llvm::LoopInfo in the runOnModule

References & Links :

• LLVM Get Started

• LLVM-12 Book

• Legacy Pass Example : See folder.

  • https://llvm.org/docs/WritingAnLLVMPass.html#introduction-what-is-a-pass

• New LLVM Pass Manager :

  • https://llvm.org/docs/NewPassManager.html
  • https://llvm.org/docs/WritingAnLLVMNewPMPass.html

• For function paraments as operands, you can get it get it via Function Argumentslist()

  • Reference : https://llvm.org/doxygen/group__LLVMCCoreValueFunctionParameters.html
  • Value reference : http://llvm.org/doxygen/classllvm_1_1Value.html
  • User class : for getnumoperands, getoperands etc. https://llvm.org/doxygen/classllvm_1_1User.html

• Some other differences are listed here. Even C++ one is quadratic probed.

  • https://llvm.org/docs/ProgrammersManual.html#llvm-adt-densemap-h

• Where is "emit-llvm"? ASMWritter AsmWritter.cpp.

  • https://github.com/llvm-mirror/llvm/blob/master/tools/gold/gold-plugin.cpp#L232
  • https://www.cs.cornell.edu/~asampson/blog/llvm.html

• LLVM Data Structures :

  • https://llvm.org/docs/ProgrammersManual.html#picking-the-right-data-structure-for-a-task

• LLVM RTTI :

  • https://llvm.org/docs/HowToSetUpLLVMStyleRTTI.html#id1

• Inspection & Traversal over CFG in IR :

  • https://llvm.org/docs/ProgrammersManual.html#basic-inspection-and-traversal-routines
  • https://llvm.org/docs/ProgrammersManual.html#making-simple-changes