diff options
Diffstat (limited to 'lib/CodeGen/BranchFolding.cpp')
| -rw-r--r-- | lib/CodeGen/BranchFolding.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp index 1a2117b912..9ed805174b 100644 --- a/lib/CodeGen/BranchFolding.cpp +++ b/lib/CodeGen/BranchFolding.cpp @@ -1230,8 +1230,8 @@ ReoptimizeBlock: // If the previous block unconditionally falls through to this block and // this block has no other predecessors, move the contents of this block // into the prior block. This doesn't usually happen when SimplifyCFG - // has been used, but it can happen if tail duplication eliminates all the - // non-branch predecessors of a block leaving only the fall-through edge. + // has been used, but it can happen if tail merging splits a fall-through + // predecessor of a block. // This has to check PrevBB->succ_size() because EH edges are ignored by // AnalyzeBranch. if (PriorCond.empty() && !PriorTBB && MBB->pred_size() == 1 && |