Add possibility to set memory limit for binaries run via libSystem. This

is especially needed for bugpoint. This partly implements PR688


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34349 91177308-0d34-0410-b5e6-96231b3b80d8

tools/bugpoint/BugDriver.cpp

@@ -64,10 +64,10 @@ std::string llvm::getPassesString(const std::vector<const PassInfo*> &Passes) {
 }
 
 BugDriver::BugDriver(const char *toolname, bool as_child, bool find_bugs,
-                     unsigned timeout)
+                     unsigned timeout, unsigned memlimit)
   : ToolName(toolname), ReferenceOutputFile(OutputFile),
     Program(0), Interpreter(0), cbe(0), gcc(0), run_as_child(as_child),
-    run_find_bugs(find_bugs), Timeout(timeout) {}
+    run_find_bugs(find_bugs), Timeout(timeout), MemoryLimit(memlimit) {}
 
 
 /// ParseInputFile - Given a bytecode or assembly input filename, parse and