197   ///   Water   - Potential places where an island could be formed.
250     /// entry, but if it later moves out of range, the search for new water
402     bool isWaterInRange(unsigned UserOffset, MachineBasicBlock *Water,
475   // sizes of each block, the location of all the water, and finding all of the  in runOnMachineFunction()
498     // appear as "new water" for the next iteration of constant pool placement.  in runOnMachineFunction()
629 /// information about the sizes of each block, the location of all the water,
649     // 'water' that a constant pool island could be placed.  in initializeFunctionInfo()
831   // available water after it.  in updateForInsertedWaterBlock()
871   // the Water goes after OrigBB, not NewBB.  in splitBlockBeforeInstr()
879   // available water after it (but not if it's already there, which happens  in splitBlockBeforeInstr()
925 /// Water (a basic block) will be in range for the specific MI.
927 /// Compute how much the function will grow by inserting a CPE after Water.
929                                         MachineBasicBlock* Water, CPUser &U,  in isWaterInRange()  argument
931   unsigned CPEOffset = BBInfo[Water->getNumber()].postOffset();  in isWaterInRange()
934   MachineFunction::const_iterator NextBlock = ++Water->getIterator();  in isWaterInRange()
936     NextBlockOffset = BBInfo[Water->getNumber()].postOffset();  in isWaterInRange()
1161 /// prefer the first water that is in range.
1171     // Check if water is in range and is either at a lower address than the  in findAvailableWater()
1172     // current "high water mark" or a new water block that was created since  in findAvailableWater()
1174     // latter case, we want to allow resetting the high water mark back to  in findAvailableWater()
1175     // this new water since we haven't seen it before.  Inserting branches  in findAvailableWater()
1186       LLVM_DEBUG(dbgs() << "Found water after " << printMBBReference(*WaterBB)  in findAvailableWater()
1216   // end of the block is within range, make new water there.  in createNewWater()
1262   // pool entries following this block; only the last one is in the water list.  in createNewWater()
1318   // Look for water where we can place this CPE.  in handleConstantPoolUser()
1323     LLVM_DEBUG(dbgs() << "Found water in range\n");  in handleConstantPoolUser()
1326     // If the original WaterList entry was "new water" on this iteration,  in handleConstantPoolUser()
1335     // No water found.  in handleConstantPoolUser()
1342     LLVM_DEBUG(dbgs() << "No water found\n");  in handleConstantPoolUser()
1346     // called while handling branches so that the water will be seen on the  in handleConstantPoolUser()
1355     // We are adding new water.  Update NewWaterList.  in handleConstantPoolUser()