[llvm-commits] CVS: llvm/lib/CodeGen/RegAllocLinearScan.cpp

[Chris Lattner]

Changes in directory llvm/lib/CodeGen:

RegAllocLinearScan.cpp updated: 1.119 -> 1.120
---
Log message:

Add some comments.


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Diffs of the changes:  (+4 -0)

 RegAllocLinearScan.cpp |    4 ++++
 1 files changed, 4 insertions(+)


Index: llvm/lib/CodeGen/RegAllocLinearScan.cpp
diff -u llvm/lib/CodeGen/RegAllocLinearScan.cpp:1.119 llvm/lib/CodeGen/RegAllocLinearScan.cpp:1.120
--- llvm/lib/CodeGen/RegAllocLinearScan.cpp:1.119	Thu Feb 23 00:44:17 2006
+++ llvm/lib/CodeGen/RegAllocLinearScan.cpp	Sat Mar 25 17:00:56 2006
@@ -539,6 +539,7 @@
  
   DEBUG(std::cerr << "\tassigning stack slot at interval "<< *cur << ":\n");
 
+  // Find a register to spill.
   float minWeight = float(HUGE_VAL);
   unsigned minReg = 0;
   for (TargetRegisterClass::iterator i = RC->allocation_order_begin(*mf_),
@@ -549,6 +550,9 @@
       minReg = reg;
     }
   }
+  
+  // If we didn't find a register that is spillable, try aliases?
+  
 // FIXME:  assert(minReg && "Didn't find any reg!");
   DEBUG(std::cerr << "\t\tregister with min weight: "
         << mri_->getName(minReg) << " (" << minWeight << ")\n");