[llvm-commits] CVS: llvm/lib/Transforms/Scalar/LoopUnswitch.cpp

[Chris Lattner]

Changes in directory llvm/lib/Transforms/Scalar:

LoopUnswitch.cpp updated: 1.35 -> 1.36
---
Log message:

add the actual cost to the debug info


---
Diffs of the changes:  (+4 -2)

 LoopUnswitch.cpp |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)


Index: llvm/lib/Transforms/Scalar/LoopUnswitch.cpp
diff -u llvm/lib/Transforms/Scalar/LoopUnswitch.cpp:1.35 llvm/lib/Transforms/Scalar/LoopUnswitch.cpp:1.36
--- llvm/lib/Transforms/Scalar/LoopUnswitch.cpp:1.35	Wed Feb 22 17:55:00 2006
+++ llvm/lib/Transforms/Scalar/LoopUnswitch.cpp	Fri Mar 24 01:14:00 2006
@@ -375,7 +375,8 @@
 /// unswitch the loop, reprocess the pieces, then return true.
 bool LoopUnswitch::UnswitchIfProfitable(Value *LoopCond, Constant *Val,Loop *L){
   // Check to see if it would be profitable to unswitch this loop.
-  if (getLoopUnswitchCost(L, LoopCond) > Threshold) {
+  unsigned Cost = getLoopUnswitchCost(L, LoopCond);
+  if (Cost > Threshold) {
     // FIXME: this should estimate growth by the amount of code shared by the
     // resultant unswitched loops.
     //
@@ -390,7 +391,8 @@
   // these values.
   if (LoopValuesUsedOutsideLoop(L)) {
     DEBUG(std::cerr << "NOT unswitching loop %" << L->getHeader()->getName()
-                    << ", a loop value is used outside loop!\n");
+                    << ", a loop value is used outside loop!  Cost: "
+                    << Cost << "\n");
     return false;
   }