[llvm] 07ba457 - [SLP][NFC]Add dump of combined entries, where applicable

[Alexey Bataev via llvm-commits]

Author: Alexey Bataev
Date: 2024-12-27T07:56:10-08:00
New Revision: 07ba4575250b692b28d0fd5105e028b9f4c8e07f

URL: https://github.com/llvm/llvm-project/commit/07ba4575250b692b28d0fd5105e028b9f4c8e07f
DIFF: https://github.com/llvm/llvm-project/commit/07ba4575250b692b28d0fd5105e028b9f4c8e07f.diff

LOG: [SLP][NFC]Add dump of combined entries, where applicable

Added: 
    

Modified: 
    llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
index e9fc89fa242a7a..7f4c3d44b0ec4f 100644
--- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -3311,7 +3311,7 @@ class BoUpSLP {
 
     /// For gather/buildvector/alt opcode (TODO) nodes, which are combined from
     /// other nodes as a series of insertvector instructions.
-    SmallVector<std::pair<unsigned, unsigned>, 0> CombinedEntriesWithIndices;
+    SmallVector<std::pair<unsigned, unsigned>, 2> CombinedEntriesWithIndices;
 
   private:
     /// The operands of each instruction in each lane Operands[op_index][lane].
@@ -3545,6 +3545,13 @@ class BoUpSLP {
       for (const auto &EInfo : UserTreeIndices)
         dbgs() << EInfo << ", ";
       dbgs() << "\n";
+      if (!CombinedEntriesWithIndices.empty()) {
+        dbgs() << "Combined entries: ";
+        interleaveComma(CombinedEntriesWithIndices, dbgs(), [&](const auto &P) {
+          dbgs() << "Entry index " << P.first << " with offset " << P.second;
+        });
+        dbgs() << "\n";
+      }
     }
 #endif
   };