#include "gccld.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
+#include "llvm/Analysis/LoadValueNumbering.h"
+#include "llvm/Analysis/Verifier.h"
#include "llvm/Bytecode/WriteBytecodePass.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Transforms/IPO.h"
#include "Support/SystemUtils.h"
#include "Support/CommandLine.h"
+using namespace llvm;
+
namespace {
cl::opt<bool>
DisableInline("disable-inlining", cl::desc("Do not run the inliner pass"));
+
+ cl::opt<bool>
+ Verify("verify", cl::desc("Verify intermediate results of all passes"));
+
+ cl::opt<bool>
+ DisableOptimizations("disable-opt",
+ cl::desc("Do not run any optimization passes"));
}
+namespace llvm {
+
+static inline void addPass(PassManager &PM, Pass *P) {
+ // Add the pass to the pass manager...
+ PM.add(P);
+
+ // If we are verifying all of the intermediate steps, add the verifier...
+ if (Verify) PM.add(createVerifierPass());
+}
/// GenerateBytecode - generates a bytecode file from the specified module.
///
// a little bit. Do this now.
PassManager Passes;
- // Add an appropriate TargetData instance for this module...
- Passes.add(new TargetData("gccld", M));
-
- // Linking modules together can lead to duplicated global constants, only keep
- // one copy of each constant...
- Passes.add(createConstantMergePass());
+ if (Verify) Passes.add(createVerifierPass());
- // If the -s command line option was specified, strip the symbols out of the
- // resulting program to make it smaller. -s is a GCC option that we are
- // supporting.
- if (Strip)
- Passes.add(createSymbolStrippingPass());
+ // Add an appropriate TargetData instance for this module...
+ addPass(Passes, new TargetData("gccld", M));
// Often if the programmer does not specify proper prototypes for the
// functions they are calling, they end up calling a vararg version of the
// function that does not get a body filled in (the real function has typed
// arguments). This pass merges the two functions.
- Passes.add(createFunctionResolvingPass());
+ addPass(Passes, createFunctionResolvingPass());
- if (Internalize) {
- // Now that composite has been compiled, scan through the module, looking
- // for a main function. If main is defined, mark all other functions
- // internal.
- Passes.add(createInternalizePass());
- }
+ if (!DisableOptimizations) {
+ // Linking modules together can lead to duplicated global constants, only
+ // keep one copy of each constant...
+ addPass(Passes, createConstantMergePass());
+
+ // If the -s command line option was specified, strip the symbols out of the
+ // resulting program to make it smaller. -s is a GCC option that we are
+ // supporting.
+ if (Strip)
+ addPass(Passes, createSymbolStrippingPass());
+
+ if (Internalize) {
+ // Now that composite has been compiled, scan through the module, looking
+ // for a main function. If main is defined, mark all other functions
+ // internal.
+ addPass(Passes, createInternalizePass());
+ }
+
+ // Propagate constants at call sites into the functions they call.
+ addPass(Passes, createIPConstantPropagationPass());
- // Propagate constants at call sites into the functions they call.
- Passes.add(createIPConstantPropagationPass());
+ // Remove unused arguments from functions...
+ addPass(Passes, createDeadArgEliminationPass());
- // Remove unused arguments from functions...
- Passes.add(createDeadArgEliminationPass());
+ if (!DisableInline)
+ addPass(Passes, createFunctionInliningPass()); // Inline small functions
- if (!DisableInline)
- Passes.add(createFunctionInliningPass()); // Inline small functions
+ // Run a few AA driven optimizations here and now, to cleanup the code.
+ // Eventually we should put an IP AA in place here.
- // The FuncResolve pass may leave cruft around if functions were prototyped
- // differently than they were defined. Remove this cruft.
- Passes.add(createInstructionCombiningPass());
+ addPass(Passes, createLICMPass()); // Hoist loop invariants
+ addPass(Passes, createLoadValueNumberingPass()); // GVN for load instrs
+ addPass(Passes, createGCSEPass()); // Remove common subexprs
- // Delete basic blocks, which optimization passes may have killed...
- Passes.add(createCFGSimplificationPass());
+ // The FuncResolve pass may leave cruft around if functions were prototyped
+ // differently than they were defined. Remove this cruft.
+ addPass(Passes, createInstructionCombiningPass());
- // Now that we have optimized the program, discard unreachable functions...
- Passes.add(createGlobalDCEPass());
+ // Delete basic blocks, which optimization passes may have killed...
+ addPass(Passes, createCFGSimplificationPass());
+
+ // Now that we have optimized the program, discard unreachable functions...
+ addPass(Passes, createGlobalDCEPass());
+ }
+
+ // Make sure everything is still good.
+ Passes.add(createVerifierPass());
// Add the pass that writes bytecode to the output file...
- Passes.add(new WriteBytecodePass(Out));
+ addPass(Passes, new WriteBytecodePass(Out));
// Run our queue of passes all at once now, efficiently.
Passes.run(*M);
// Add in the libraries to link.
std::vector<std::string> Libs(Libraries);
for (unsigned index = 0; index < Libs.size(); index++) {
- Libs[index] = "-l" + Libs[index];
- cmd.push_back(Libs[index].c_str());
+ if (Libs[index] != "crtend") {
+ Libs[index] = "-l" + Libs[index];
+ cmd.push_back(Libs[index].c_str());
+ }
}
cmd.push_back(NULL);
// Run the compiler to assembly and link together the program.
return ExecWait(&(cmd[0]), clean_env);
}
+
+} // End llvm namespace
projects / oota-llvm.git / blobdiff