[llvm-commits] [llvm] r52985 - /llvm/trunk/lib/CodeGen/BranchFolding.cpp

[Dale Johannesen]

Author: johannes
Date: Tue Jul  1 16:50:14 2008
New Revision: 52985

URL: http://llvm.org/viewvc/llvm-project?rev=52985&view=rev
Log:
Fix longstanding thinko:  don't exclude
predessors of exit blocks from tail merging
consideration.


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

Modified: llvm/trunk/lib/CodeGen/BranchFolding.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/BranchFolding.cpp?rev=52985&r1=52984&r2=52985&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/BranchFolding.cpp (original)
+++ llvm/trunk/lib/CodeGen/BranchFolding.cpp Tue Jul  1 16:50:14 2008
@@ -697,8 +697,7 @@
   // transformations.)
 
   for (MachineFunction::iterator I = MF.begin(), E = MF.end(); I != E; ++I) {
-    if (!I->succ_empty() && I->pred_size() >= 2 && 
-         I->pred_size() < TailMergeThreshold) {
+    if (I->pred_size() >= 2 && I->pred_size() < TailMergeThreshold) {
       MachineBasicBlock *IBB = I;
       MachineBasicBlock *PredBB = prior(I);
       MergePotentials.clear();