[llvm-commits] [llvm] r169880 - /llvm/trunk/lib/CodeGen/PeepholeOptimizer.cpp

[Joel Jones]

Author: joel_k_jones
Date: Tue Dec 11 10:10:25 2012
New Revision: 169880

URL: http://llvm.org/viewvc/llvm-project?rev=169880&view=rev
Log:
Add comment for load folding

Modified:
    llvm/trunk/lib/CodeGen/PeepholeOptimizer.cpp

Modified: llvm/trunk/lib/CodeGen/PeepholeOptimizer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/PeepholeOptimizer.cpp?rev=169880&r1=169879&r2=169880&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/PeepholeOptimizer.cpp (original)
+++ llvm/trunk/lib/CodeGen/PeepholeOptimizer.cpp Tue Dec 11 10:10:25 2012
@@ -49,6 +49,11 @@
 //     v1 = bitcast v0
 //        = v0
 //
+// - Optimize Loads:
+//
+//     Loads that can be folded into a later instruction. A load is foldable
+//     if it loads to virtual registers and the virtual register defined has 
+//     a single use.
 //===----------------------------------------------------------------------===//
 
 #define DEBUG_TYPE "peephole-opt"