[llvm-branch-commits] [llvm] 993c488 - [DAG] visitVECTOR_SHUFFLE - use all_of to check for all-undef shuffle mask. NFCI.

[Simon Pilgrim via llvm-branch-commits]

Author: Simon Pilgrim
Date: 2021-01-13T17:19:41Z
New Revision: 993c488ed2b347011d9d71990af38a82aaf5bdf5

URL: https://github.com/llvm/llvm-project/commit/993c488ed2b347011d9d71990af38a82aaf5bdf5
DIFF: https://github.com/llvm/llvm-project/commit/993c488ed2b347011d9d71990af38a82aaf5bdf5.diff

LOG: [DAG] visitVECTOR_SHUFFLE - use all_of to check for all-undef shuffle mask. NFCI.

Added: 
    

Modified: 
    llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 5d9bb4e4a98b..7e4ee3beeeed 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -20901,11 +20901,7 @@ SDValue DAGCombiner::visitVECTOR_SHUFFLE(SDNode *N) {
     }
 
     // Check if all indices in Mask are Undef. In case, propagate Undef.
-    bool isUndefMask = true;
-    for (unsigned i = 0; i != NumElts && isUndefMask; ++i)
-      isUndefMask &= Mask[i] < 0;
-
-    if (isUndefMask)
+    if (llvm::all_of(Mask, [](int M) { return M < 0; }))
       return DAG.getUNDEF(VT);
 
     if (!SV0.getNode())