Tutorial 2 Introduction to LLVM ii

Handout: [Overleaf]

TL'DR

• User-Use-Value Relationship
• LLVM Pass Manager: Require & Preserve

Examples

1. Transform_Pass_Example shows you how to traverse through the users and operands of an instruction, and also how to insert new instructions into the module.

   /Example1-Transform_Pass_Example$ mkdir build && cd build
   /Example1-Transform_Pass_Example/build$ cmake -DCMAKE_BUILD_TYPE=Release ..
   /Example1-Transform_Pass_Example/build$ make
   /Example1-Transform_Pass_Example/build$ ctest -V
2. Pass_Manager shows you how to require and preserve/abandon other analysis passes.

   /Example2-Pass_Manager$ mkdir build && cd build
   /Example2-Pass_Manager/build$ cmake -DCMAKE_BUILD_TYPE=Release ..
   /Example2-Pass_Manager/build$ make
   /Example2-Pass_Manager/build$ ctest -V