Make bugpoint *much* more powerful, giving it the capability to delete instructions

out of a large function to reduce it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5408 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/tools/bugpoint/BugDriver.h b/tools/bugpoint/BugDriver.h
index 6398366d8c..3dbb84dab6 100644
--- a/tools/bugpoint/BugDriver.h
+++ b/tools/bugpoint/BugDriver.h
@@ -15,6 +15,7 @@ class PassInfo;
 class Module;
 class Function;
 class AbstractInterpreter;
+class Instruction;
 
 class BugDriver {
   const std::string ToolName;  // Name of bugpoint
@@ -117,6 +118,13 @@ private:
   ///
   Module *extractFunctionFromModule(Function *F) const;
 
+  /// deleteInstructionFromProgram - This method clones the current Program and
+  /// deletes the specified instruction from the cloned module.  It then runs a
+  /// series of cleanup passes (ADCE and SimplifyCFG) to eliminate any code
+  /// which depends on the value.  The modified module is then returned.
+  ///
+  Module *deleteInstructionFromProgram(Instruction *I, unsigned Simp) const;
+
   /// initializeExecutionEnvironment - This method is used to set up the
   /// environment for executing LLVM programs.
   ///