[llvm-commits] [llvm] r121893 - /llvm/trunk/include/llvm/CodeGen/SlotIndexes.h

[Jakob Stoklund Olesen]

Author: stoklund
Date: Wed Dec 15 14:40:22 2010
New Revision: 121893

URL: http://llvm.org/viewvc/llvm-project?rev=121893&view=rev
Log:
Add SlotIndexes::getMBBRange() to get the range of a basic block in a single
lookup.

Modified:
    llvm/trunk/include/llvm/CodeGen/SlotIndexes.h

Modified: llvm/trunk/include/llvm/CodeGen/SlotIndexes.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/SlotIndexes.h?rev=121893&r1=121892&r2=121893&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/SlotIndexes.h (original)
+++ llvm/trunk/include/llvm/CodeGen/SlotIndexes.h Wed Dec 15 14:40:22 2010
@@ -545,18 +545,22 @@
       return nextNonNull;
     }
 
-    /// Returns the first index in the given basic block.
-    SlotIndex getMBBStartIdx(const MachineBasicBlock *mbb) const {
+    /// Return the (start,end) range of the given basic block.
+    const std::pair<SlotIndex, SlotIndex> &
+    getMBBRange(const MachineBasicBlock *mbb) const {
       MBB2IdxMap::const_iterator itr = mbb2IdxMap.find(mbb);
       assert(itr != mbb2IdxMap.end() && "MBB not found in maps.");
-      return itr->second.first;
+      return itr->second;
+    }
+
+    /// Returns the first index in the given basic block.
+    SlotIndex getMBBStartIdx(const MachineBasicBlock *mbb) const {
+      return getMBBRange(mbb).first;
     }
 
     /// Returns the last index in the given basic block.
     SlotIndex getMBBEndIdx(const MachineBasicBlock *mbb) const {
-      MBB2IdxMap::const_iterator itr = mbb2IdxMap.find(mbb);
-      assert(itr != mbb2IdxMap.end() && "MBB not found in maps.");
-      return itr->second.second;
+      return getMBBRange(mbb).second;
     }
 
     /// Returns the basic block which the given index falls in.