[llvm-commits] [llvm] r82313 - /llvm/trunk/include/llvm/Target/TargetLowering.h

[Evan Cheng]

Author: evancheng
Date: Sat Sep 19 05:08:51 2009
New Revision: 82313

URL: http://llvm.org/viewvc/llvm-project?rev=82313&view=rev
Log:
Update comments.

Modified:
    llvm/trunk/include/llvm/Target/TargetLowering.h

Modified: llvm/trunk/include/llvm/Target/TargetLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetLowering.h?rev=82313&r1=82312&r2=82313&view=diff

==============================================================================
--- llvm/trunk/include/llvm/Target/TargetLowering.h (original)
+++ llvm/trunk/include/llvm/Target/TargetLowering.h Sat Sep 19 05:08:51 2009
@@ -1440,6 +1440,9 @@
   // instructions are special in various ways, which require special support to
   // insert.  The specified MachineInstr is created but not inserted into any
   // basic blocks, and the scheduler passes ownership of it to this method.
+  // When new basic blocks are inserted and the edges from MBB to its successors
+  // are modified, the method should insert pairs of <OldSucc, NewSucc> into the
+  // DenseMap.
   virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
                                                          MachineBasicBlock *MBB,
                     DenseMap<MachineBasicBlock*, MachineBasicBlock*> *EM) const;