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author | Andrew Lenharth <alenhar2@cs.uiuc.edu> | 2008-03-07 19:51:57 +0000 |
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committer | Andrew Lenharth <alenhar2@cs.uiuc.edu> | 2008-03-07 19:51:57 +0000 |
commit | 38a176764521c0168e78213dace030c47a9b2124 (patch) | |
tree | 1d49db6fbc5fe289d07addb27ba8efbeb4883b50 /tools/llvm-extract | |
parent | e5c20e87ce195a1335eb5f80c699cf646f5679c4 (diff) | |
download | external_llvm-38a176764521c0168e78213dace030c47a9b2124.zip external_llvm-38a176764521c0168e78213dace030c47a9b2124.tar.gz external_llvm-38a176764521c0168e78213dace030c47a9b2124.tar.bz2 |
add a pass that can extract all kinds of global values, not just functions. Update llvm-extract to use it and optionally extract a global variable if you want it too
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48015 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/llvm-extract')
-rw-r--r-- | tools/llvm-extract/llvm-extract.cpp | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/tools/llvm-extract/llvm-extract.cpp b/tools/llvm-extract/llvm-extract.cpp index 67f686e..7a16acf 100644 --- a/tools/llvm-extract/llvm-extract.cpp +++ b/tools/llvm-extract/llvm-extract.cpp @@ -39,17 +39,22 @@ static cl::opt<bool> Force("f", cl::desc("Overwrite output files")); static cl::opt<bool> -DeleteFn("delete", cl::desc("Delete specified function from Module")); +DeleteFn("delete", cl::desc("Delete specified Globals from Module")); static cl::opt<bool> Relink("relink", cl::desc("Turn external linkage for callees of function to delete")); -// ExtractFunc - The function to extract from the module... defaults to main. +// ExtractFunc - The function to extract from the module... static cl::opt<std::string> -ExtractFunc("func", cl::desc("Specify function to extract"), cl::init("main"), +ExtractFunc("func", cl::desc("Specify function to extract"), cl::init(""), cl::value_desc("function")); +// ExtractGlobal - The global to extract from the module... +static cl::opt<std::string> +ExtractGlobal("glob", cl::desc("Specify global to extract"), cl::init(""), + cl::value_desc("global")); + int main(int argc, char **argv) { llvm_shutdown_obj X; // Call llvm_shutdown() on exit. cl::ParseCommandLineOptions(argc, argv, "llvm extractor\n"); @@ -72,10 +77,17 @@ int main(int argc, char **argv) { } // Figure out which function we should extract - Function *F = M.get()->getFunction(ExtractFunc); - if (F == 0) { + GlobalVariable *G = ExtractGlobal.size() ? + M.get()->getNamedGlobal(ExtractGlobal) : 0; + + // Figure out which function we should extract + Function *F = ExtractFunc.size() ? + M.get()->getFunction(ExtractFunc) : + M.get()->getFunction("main"); + + if (F == 0 && G == 0) { cerr << argv[0] << ": program doesn't contain function named '" - << ExtractFunc << "'!\n"; + << ExtractFunc << "' or a global named '" << ExtractGlobal << "'!\n"; return 1; } @@ -84,7 +96,11 @@ int main(int argc, char **argv) { PassManager Passes; Passes.add(new TargetData(M.get())); // Use correct TargetData // Either isolate the function or delete it from the Module - Passes.add(createFunctionExtractionPass(F, DeleteFn, Relink)); + std::vector<GlobalValue*> GVs; + if (F) GVs.push_back(F); + if (G) GVs.push_back(G); + + Passes.add(createGVExtractionPass(GVs, DeleteFn, Relink)); if (!DeleteFn) Passes.add(createGlobalDCEPass()); // Delete unreachable globals Passes.add(createDeadTypeEliminationPass()); // Remove dead types... |