[llvm-commits] CVS: llvm/lib/Reoptimizer/LightWtProfiling/Trigger/Initialization.cpp

[Brian Gaeke]

Changes in directory llvm/lib/Reoptimizer/LightWtProfiling/Trigger:

Initialization.cpp added (r1.1)

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Log message:

New file intended to contain all the Reoptimizer's initialization code.


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Diffs of the changes:

Index: llvm/lib/Reoptimizer/LightWtProfiling/Trigger/Initialization.cpp
diff -c /dev/null llvm/lib/Reoptimizer/LightWtProfiling/Trigger/Initialization.cpp:1.1
*** /dev/null	Tue Aug 12 22:07:55 2003
--- llvm/lib/Reoptimizer/LightWtProfiling/Trigger/Initialization.cpp	Tue Aug 12 22:06:45 2003
***************
*** 0 ****
--- 1,59 ----
+ //===-- LightWtProfiling/Trigger/Initialization.cpp --------------*- C++ -*--=//
+ //
+ // Initialization functions called either from the main() of an
+ // instrumented program, or later when we determine that further
+ // instrumentation will be necessary. 
+ //
+ //===----------------------------------------------------------------------===//
+ 
+ #include "GetTimer.h"
+ #include "Globals.h"
+ #include "llvm/Bytecode/Reader.h"
+ 
+ // Function used as space for the second-level instrumentation trace cache.
+ extern "C" void dummyFunction2 ();
+ 
+ // Definitions of globals declared extern in Globals.h
+ int reopt_threshold;
+ long THRESHOLD_LEVEL_2;
+ long LEVEL_TWO_EXITS; 
+ TraceCache *tr;
+ TraceCache *tr2;
+ VirtualMem *vm;
+ Module *M;
+ 
+ /// Initialization method for the reoptimizer. A call to this function
+ /// from main() is inserted by the opt -instloops pass
+ /// (Transforms/Instrumentation/ProfilePaths/InstLoops.cpp).
+ ///
+ extern "C" void reoptimizerInitialize(){
+   vm = new VirtualMem();
+   tr = new TraceCache(30000, vm);
+   tr2 = new TraceCache(dummyFunction2, 30000, vm);
+  
+   if(getenv("THRESHOLD_LEVEL_2")!=NULL)
+     THRESHOLD_LEVEL_2 = atoi(getenv("THRESHOLD_LEVEL_2"));
+   else
+     THRESHOLD_LEVEL_2= DEFAULT_THRESHOLD_LEVEL_2;
+ 
+   LEVEL_TWO_EXITS = THRESHOLD_LEVEL_2/3;
+ 
+   if(getenv("THRESHOLD_LEVEL_1")!=NULL)
+     reopt_threshold = atoi(getenv("THRESHOLD_LEVEL_1"));
+   else
+     reopt_threshold = DEFAULT_THRESHOLD_LEVEL_1;
+ 
+   // FIXME: When do we need to call this?
+   //initialize_timer();
+ }
+ 
+ /// Initialization method for the reoptimizer that parses the bytecode
+ /// which was stored in the executable image. This is not supposed to
+ /// be called until 2nd-level instrumentation, probably because parsing
+ /// bytecode incurs some overhead.
+ ///
+ void initModules () {
+   std::string err;
+   M = ParseBytecodeBuffer(LLVMBytecode, llvm_length, "NOFILENAME", &err);
+   assert(M && "Module parsing failed!");
+ }