[llvm-commits] [llvm] r44543 - /llvm/trunk/lib/Transforms/Scalar/SimplifyCFG.cpp

[Chris Lattner]

Author: lattner
Date: Mon Dec  3 13:43:18 2007
New Revision: 44543

URL: http://llvm.org/viewvc/llvm-project?rev=44543&view=rev
Log:
update file comment.

Modified:
    llvm/trunk/lib/Transforms/Scalar/SimplifyCFG.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/SimplifyCFG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/SimplifyCFG.cpp?rev=44543&r1=44542&r2=44543&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/SimplifyCFG.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/SimplifyCFG.cpp Mon Dec  3 13:43:18 2007
@@ -7,14 +7,17 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// This file implements dead code elimination and basic block merging.
-// Specifically:
+// This file implements dead code elimination and basic block merging, along
+// with a collection of other peephole control flow optimizations.  For example:
 //
 //   * Removes basic blocks with no predecessors.
 //   * Merges a basic block into its predecessor if there is only one and the
 //     predecessor only has one successor.
 //   * Eliminates PHI nodes for basic blocks with a single predecessor.
 //   * Eliminates a basic block that only contains an unconditional branch.
+//   * Changes invoke instructions to nounwind functions to be calls.
+//   * Change things like "if (x) if (y)" into "if (x&y)".
+//   * etc..
 //
 //===----------------------------------------------------------------------===//