Factor some code out of SimplifyCFG, forming a new

DeleteBlockIfDead method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60463 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 0 deletions

diff --git a/include/llvm/Transforms/Utils/BasicBlockUtils.h b/include/llvm/Transforms/Utils/BasicBlockUtils.h
index 0de82433be..881bcffc12 100644
--- a/include/llvm/Transforms/Utils/BasicBlockUtils.h
+++ b/include/llvm/Transforms/Utils/BasicBlockUtils.h
@@ -26,6 +26,11 @@ class Instruction;
 class Pass;
 class AliasAnalysis;
 
+/// DeleteBlockIfDead - If the specified basic block is trivially dead (has no
+/// predecessors and not the entry block), delete it and return true.  Otherwise
+/// return false.
+bool DeleteBlockIfDead(BasicBlock *BB);
+  
 /// MergeBlockIntoPredecessor - Attempts to merge a block into its predecessor,
 /// if possible.  The return value indicates success or failure.
 bool MergeBlockIntoPredecessor(BasicBlock* BB, Pass* P = 0);