This makefile specifies that all of the .cpp files in the current directory are to be compiled and linked together into a -Debug/lib/Hello.so shared object that can be dynamically loaded by +Debug+Asserts/lib/Hello.so shared object that can be dynamically loaded by the opt or bugpoint tools via their -load options. If your operating system uses a suffix other than .so (such as windows or Mac OS/X), the appropriate extension will be used.
@@ -332,7 +332,7 @@ is supplied as fourth argument.Now that it's all together, compile the file with a simple "gmake" command in the local directory and you should get a new -"Debug/lib/Hello.so file. Note that everything in this file is +"Debug+Asserts/lib/Hello.so file. 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.
@@ -358,7 +358,7 @@ through our transformation like this (or course, any bitcode file will work):-$ opt -load ../../../Debug/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 @@ -375,7 +375,7 @@ interesting way, we just throw away the result of opt (sending it to opt with the -help option:-$ opt -load ../../../Debug/lib/Hello.so -help +$ opt -load ../../../Debug+Asserts/lib/Hello.so -help OVERVIEW: llvm .bc -> .bc modular optimizer USAGE: opt [options] <input bitcode> @@ -403,7 +403,7 @@ the execution time of your pass along with the other passes you queue up. For example:-$ opt -load ../../../Debug/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 @@ -1418,7 +1418,7 @@ how our Hello World pass interacts with other passes. Lets try it out with the gcse and licm passes:-$ opt -load ../../../Debug/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 @@ -1455,7 +1455,7 @@ passes. World pass in between the two passes:-$ opt -load ../../../Debug/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 @@ -1496,7 +1496,7 @@ href="#getAnalysisUsage">getAnalysisUsage method to our pass:Now when we run our pass, we get this output:
-$ opt -load ../../../Debug/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 @@ -1737,8 +1737,8 @@ want:(gdb) break llvm::PassManager::run Breakpoint 1 at 0x2413bc: file Pass.cpp, line 70. -(gdb) run test.bc -load $(LLVMTOP)/llvm/Debug/lib/[libname].so -[passoption] -Starting program: opt test.bc -load $(LLVMTOP)/llvm/Debug/lib/[libname].so -[passoption] +(gdb) run test.bc -load $(LLVMTOP)/llvm/Debug+Asserts/lib/[libname].so -[passoption] +Starting program: opt test.bc -load $(LLVMTOP)/llvm/Debug+Asserts/lib/[libname].so -[passoption] Breakpoint 1, PassManager::run (this=0xffbef174, M=@0x70b298) at Pass.cpp:70 70 bool PassManager::run(Module &M) { return PM->run(M); } (gdb)