[llvm-commits] [llvm] r51154 - /llvm/trunk/lib/Transforms/Scalar/TailDuplication.cpp

[Devang Patel]

Author: dpatel
Date: Thu May 15 13:04:29 2008
New Revision: 51154

URL: http://llvm.org/viewvc/llvm-project?rev=51154&view=rev
Log:
Remove useless check.
Patch by Matthijs Kooijman.

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

Modified: llvm/trunk/lib/Transforms/Scalar/TailDuplication.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/TailDuplication.cpp?rev=51154&r1=51153&r2=51154&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/TailDuplication.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/TailDuplication.cpp Thu May 15 13:04:29 2008
@@ -109,13 +109,9 @@
   if (!DTI->use_empty())
     return false;
 
-  // Do not bother working on dead blocks...
-  pred_iterator PI = pred_begin(Dest), PE = pred_end(Dest);
-  if (PI == PE && Dest != Dest->getParent()->begin())
-    return false;   // It's just a dead block, ignore it...
-
-  // Also, do not bother with blocks with only a single predecessor: simplify
+  // Do not bother with blocks with only a single predecessor: simplify
   // CFG will fold these two blocks together!
+  pred_iterator PI = pred_begin(Dest), PE = pred_end(Dest);
   ++PI;
   if (PI == PE) return false;  // Exactly one predecessor!