[llvm] [DAG] narrowExtractedVectorLoad - reuse existing SDLoc. NFC (PR #136870)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-selectiondag

Author: Simon Pilgrim (RKSimon)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/136870.diff


1 Files Affected:

- (modified) llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp (+3-4) 


``````````diff
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index cb5943eca82f5..fc673d7642fd0 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -25243,7 +25243,8 @@ static SDValue narrowExtractedVectorBinOp(SDNode *Extract, SelectionDAG &DAG,
 /// If we are extracting a subvector from a wide vector load, convert to a
 /// narrow load to eliminate the extraction:
 /// (extract_subvector (load wide vector)) --> (load narrow vector)
-static SDValue narrowExtractedVectorLoad(SDNode *Extract, SelectionDAG &DAG) {
+static SDValue narrowExtractedVectorLoad(SDNode *Extract, const SDLoc &DL,
+                                         SelectionDAG &DAG) {
   // TODO: Add support for big-endian. The offset calculation must be adjusted.
   if (DAG.getDataLayout().isBigEndian())
     return SDValue();
@@ -25283,8 +25284,6 @@ static SDValue narrowExtractedVectorLoad(SDNode *Extract, SelectionDAG &DAG) {
 
   // The narrow load will be offset from the base address of the old load if
   // we are extracting from something besides index 0 (little-endian).
-  SDLoc DL(Extract);
-
   // TODO: Use "BaseIndexOffset" to make this more effective.
   SDValue NewAddr = DAG.getMemBasePlusOffset(Ld->getBasePtr(), Offset, DL);
 
@@ -25468,7 +25467,7 @@ SDValue DAGCombiner::visitEXTRACT_SUBVECTOR(SDNode *N) {
     return DAG.getUNDEF(NVT);
 
   if (TLI.isOperationLegalOrCustomOrPromote(ISD::LOAD, NVT))
-    if (SDValue NarrowLoad = narrowExtractedVectorLoad(N, DAG))
+    if (SDValue NarrowLoad = narrowExtractedVectorLoad(N, DL, DAG))
       return NarrowLoad;
 
   // Combine an extract of an extract into a single extract_subvector.

``````````

</details>


https://github.com/llvm/llvm-project/pull/136870