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Add a -verify option to verify the results of gccld passes.

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Add a -disable-opt option to turn off gccld optimization passes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10040 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Brian Gaeke 2003-11-16 23:07:28 +00:00
parent 2282ae1ebd
commit 1ab90d4e38
1 changed files with 66 additions and 46 deletions
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112
tools/gccld/GenerateCode.cpp
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@ -17,6 +17,7 @@
#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"
@ -30,10 +31,25 @@ 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.
///
/// Inputs:
@ -53,60 +69,64 @@ GenerateBytecode (Module *M, bool Strip, bool Internalize, std::ostream *Out) {
// a little bit. Do this now.
PassManager Passes;
if (Verify) Passes.add(createVerifierPass());
// Add an appropriate TargetData instance for this module...
Passes.add(new TargetData("gccld", M));
addPass (Passes, new TargetData("gccld", M));
// Linking modules together can lead to duplicated global constants, only keep
// one copy of each constant...
Passes.add(createConstantMergePass());
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)
Passes.add(createSymbolStrippingPass());
// 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());
// 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());
// 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.
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 (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());
// Remove unused arguments from functions...
addPass (Passes, createDeadArgEliminationPass());
if (!DisableInline)
addPass (Passes, 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.
addPass (Passes, createLICMPass()); // Hoist loop invariants
addPass (Passes, createLoadValueNumberingPass()); // GVN for load instrs
addPass (Passes, createGCSEPass()); // Remove common subexprs
// The FuncResolve pass may leave cruft around if functions were prototyped
// differently than they were defined. Remove this cruft.
addPass (Passes, createInstructionCombiningPass());
// 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());
}
// Propagate constants at call sites into the functions they call.
Passes.add(createIPConstantPropagationPass());
// Remove unused arguments from functions...
Passes.add(createDeadArgEliminationPass());
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.
Passes.add(createLICMPass()); // Hoist loop invariants
Passes.add(createLoadValueNumberingPass()); // GVN for load instructions
Passes.add(createGCSEPass()); // Remove common subexprs
// The FuncResolve pass may leave cruft around if functions were prototyped
// differently than they were defined. Remove this cruft.
Passes.add(createInstructionCombiningPass());
// Delete basic blocks, which optimization passes may have killed...
Passes.add(createCFGSimplificationPass());
// Now that we have optimized the program, discard unreachable functions...
Passes.add(createGlobalDCEPass());
// 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);