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Diffstat (limited to 'docs/tutorial/LangImpl4.html')
| -rw-r--r-- | docs/tutorial/LangImpl4.html | 49 |
1 files changed, 20 insertions, 29 deletions
diff --git a/docs/tutorial/LangImpl4.html b/docs/tutorial/LangImpl4.html index 728d518..85e48c5 100644 --- a/docs/tutorial/LangImpl4.html +++ b/docs/tutorial/LangImpl4.html @@ -171,10 +171,7 @@ add a set of optimizations to run. The code looks like this:</p> <div class="doc_code"> <pre> - ExistingModuleProvider *OurModuleProvider = - new ExistingModuleProvider(TheModule); - - FunctionPassManager OurFPM(OurModuleProvider); + FunctionPassManager OurFPM(TheModule); // Set up the optimizer pipeline. Start with registering info about how the // target lays out data structures. @@ -198,19 +195,13 @@ add a set of optimizations to run. The code looks like this:</p> </pre> </div> -<p>This code defines two objects, an <tt>ExistingModuleProvider</tt> and a -<tt>FunctionPassManager</tt>. The former is basically a wrapper around our -<tt>Module</tt> that the PassManager requires. It provides certain flexibility -that we're not going to take advantage of here, so I won't dive into any details -about it.</p> - -<p>The meat of the matter here, is the definition of "<tt>OurFPM</tt>". It -requires a pointer to the <tt>Module</tt> (through the <tt>ModuleProvider</tt>) -to construct itself. Once it is set up, we use a series of "add" calls to add -a bunch of LLVM passes. The first pass is basically boilerplate, it adds a pass -so that later optimizations know how the data structures in the program are -laid out. The "<tt>TheExecutionEngine</tt>" variable is related to the JIT, -which we will get to in the next section.</p> +<p>This code defines a <tt>FunctionPassManager</tt>, "<tt>OurFPM</tt>". It +requires a pointer to the <tt>Module</tt> to construct itself. Once it is set +up, we use a series of "add" calls to add a bunch of LLVM passes. The first +pass is basically boilerplate, it adds a pass so that later optimizations know +how the data structures in the program are laid out. The +"<tt>TheExecutionEngine</tt>" variable is related to the JIT, which we will get +to in the next section.</p> <p>In this case, we choose to add 4 optimization passes. The passes we chose here are a pretty standard set of "cleanup" optimizations that are useful for @@ -302,8 +293,8 @@ by adding a global variable and a call in <tt>main</tt>:</p> ... int main() { .. - <b>// Create the JIT. This takes ownership of the module and module provider. - TheExecutionEngine = EngineBuilder(OurModuleProvider).create();</b> + <b>// Create the JIT. This takes ownership of the module. + TheExecutionEngine = EngineBuilder(TheModule).create();</b> .. } </pre> @@ -494,7 +485,7 @@ LLVM JIT and optimizer. To build this example, use: <div class="doc_code"> <pre> # Compile - g++ -g toy.cpp `llvm-config --cppflags --ldflags --libs core jit interpreter native` -O3 -o toy + g++ -g toy.cpp `llvm-config --cppflags --ldflags --libs core jit native` -O3 -o toy # Run ./toy </pre> @@ -511,11 +502,9 @@ at runtime.</p> <pre> #include "llvm/DerivedTypes.h" #include "llvm/ExecutionEngine/ExecutionEngine.h" -#include "llvm/ExecutionEngine/Interpreter.h" #include "llvm/ExecutionEngine/JIT.h" #include "llvm/LLVMContext.h" #include "llvm/Module.h" -#include "llvm/ModuleProvider.h" #include "llvm/PassManager.h" #include "llvm/Analysis/Verifier.h" #include "llvm/Target/TargetData.h" @@ -1084,13 +1073,15 @@ int main() { // Make the module, which holds all the code. TheModule = new Module("my cool jit", Context); - ExistingModuleProvider *OurModuleProvider = - new ExistingModuleProvider(TheModule); - - // Create the JIT. This takes ownership of the module and module provider. - TheExecutionEngine = EngineBuilder(OurModuleProvider).create(); + // Create the JIT. This takes ownership of the module. + std::string ErrStr; + TheExecutionEngine = EngineBuilder(TheModule).setErrorStr(&ErrStr).create(); + if (!TheExecutionEngine) { + fprintf(stderr, "Could not create ExecutionEngine: %s\n", ErrStr.c_str()); + exit(1); + } - FunctionPassManager OurFPM(OurModuleProvider); + FunctionPassManager OurFPM(TheModule); // Set up the optimizer pipeline. Start with registering info about how the // target lays out data structures. @@ -1135,7 +1126,7 @@ int main() { <a href="mailto:sabre@nondot.org">Chris Lattner</a><br> <a href="http://llvm.org">The LLVM Compiler Infrastructure</a><br> - Last modified: $Date: 2007-10-17 11:05:13 -0700 (Wed, 17 Oct 2007) $ + Last modified: $Date: 2010-02-11 20:15:20 +0100 (Thu, 11 Feb 2010) $ </address> </body> </html> |
