static RegisterPass<Hello> X("hello", "Hello World Pass", false, false);
Now that it's all together, compile the file with a simple "``gmake``" command
-in the local directory and you should get a new file
-"``Debug+Asserts/lib/Hello.so``" under the top level directory of the LLVM
-source tree (not in the local directory). Note that everything in this file is
+from the top level of your build directory and you should get a new file
+"``Debug+Asserts/lib/Hello.so``". Note that everything in this file is
contained in an anonymous namespace --- this reflects the fact that passes
are self contained units that do not need external interfaces (although they
can have them) to be useful.
.. code-block:: console
- $ opt -load ../../../Debug+Asserts/lib/Hello.so -hello < hello.bc > /dev/null
+ $ opt -load ../../Debug+Asserts/lib/Hello.so -hello < hello.bc > /dev/null
Hello: __main
Hello: puts
Hello: main
.. code-block:: console
- $ opt -load ../../../Debug+Asserts/lib/Hello.so -help
+ $ opt -load ../../Debug+Asserts/lib/Hello.so -help
OVERVIEW: llvm .bc -> .bc modular optimizer
USAGE: opt [options] <input bitcode>
.. code-block:: console
- $ opt -load ../../../Debug+Asserts/lib/Hello.so -hello -time-passes < hello.bc > /dev/null
+ $ opt -load ../../Debug+Asserts/lib/Hello.so -hello -time-passes < hello.bc > /dev/null
Hello: __main
Hello: puts
Hello: main
.. code-block:: console
- $ opt -load ../../../Debug+Asserts/lib/Hello.so -gcse -licm --debug-pass=Structure < hello.bc > /dev/null
+ $ opt -load ../../Debug+Asserts/lib/Hello.so -gcse -licm --debug-pass=Structure < hello.bc > /dev/null
Module Pass Manager
Function Pass Manager
Dominator Set Construction
.. code-block:: console
- $ opt -load ../../../Debug+Asserts/lib/Hello.so -gcse -hello -licm --debug-pass=Structure < hello.bc > /dev/null
+ $ opt -load ../../Debug+Asserts/lib/Hello.so -gcse -hello -licm --debug-pass=Structure < hello.bc > /dev/null
Module Pass Manager
Function Pass Manager
Dominator Set Construction
.. code-block:: console
- $ opt -load ../../../Debug+Asserts/lib/Hello.so -gcse -hello -licm --debug-pass=Structure < hello.bc > /dev/null
+ $ opt -load ../../Debug+Asserts/lib/Hello.so -gcse -hello -licm --debug-pass=Structure < hello.bc > /dev/null
Pass Arguments: -gcse -hello -licm
Module Pass Manager
Function Pass Manager