[llvm] e953679 - Add comment for SelectionDAGBuilder::SL field.

[James Y Knight via llvm-commits]

Author: James Y Knight
Date: 2020-05-12T10:46:08-04:00
New Revision: e9536795a350c6eef9c70d6a302e8b5875252b2e

URL: https://github.com/llvm/llvm-project/commit/e9536795a350c6eef9c70d6a302e8b5875252b2e
DIFF: https://github.com/llvm/llvm-project/commit/e9536795a350c6eef9c70d6a302e8b5875252b2e.diff

LOG: Add comment for SelectionDAGBuilder::SL field.

Added: 
    

Modified: 
    llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
index fa6a6baee708..0924939cc310 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
@@ -406,6 +406,8 @@ class SelectionDAGBuilder {
     SelectionDAGBuilder *SDB;
   };
 
+  // Data related to deferred switch lowerings. Used to construct additional
+  // Basic Blocks in SelectionDAGISel::FinishBasicBlock.
   std::unique_ptr<SDAGSwitchLowering> SL;
 
   /// A StackProtectorDescriptor structure used to communicate stack protector