[llvm] 592e89e - [DAG] Constify SelectionDAG::isSplatValue()

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2021-12-21T11:19:23Z
New Revision: 592e89e636d8da4e003ff6ea2c8483fa921b90dc

URL: https://github.com/llvm/llvm-project/commit/592e89e636d8da4e003ff6ea2c8483fa921b90dc
DIFF: https://github.com/llvm/llvm-project/commit/592e89e636d8da4e003ff6ea2c8483fa921b90dc.diff

LOG: [DAG] Constify SelectionDAG::isSplatValue()

This doesn't generate any nodes so should be usable by methods with const SelectionDAG &.

Added: 
    

Modified: 
    llvm/include/llvm/CodeGen/SelectionDAG.h
    llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

Removed: 
    


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diff  --git a/llvm/include/llvm/CodeGen/SelectionDAG.h b/llvm/include/llvm/CodeGen/SelectionDAG.h
index 5a3f4e9a23fff..d21844555f5bf 100644
--- a/llvm/include/llvm/CodeGen/SelectionDAG.h
+++ b/llvm/include/llvm/CodeGen/SelectionDAG.h
@@ -1912,10 +1912,10 @@ class SelectionDAG {
   ///
   /// NOTE: The function will return true for a demanded splat of UNDEF values.
   bool isSplatValue(SDValue V, const APInt &DemandedElts, APInt &UndefElts,
-                    unsigned Depth = 0);
+                    unsigned Depth = 0) const;
 
   /// Test whether \p V has a splatted value.
-  bool isSplatValue(SDValue V, bool AllowUndefs = false);
+  bool isSplatValue(SDValue V, bool AllowUndefs = false) const;
 
   /// If V is a splatted value, return the source vector and its splat index.
   SDValue getSplatSourceVector(SDValue V, int &SplatIndex);

diff  --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index ad8304e023f5b..0e2fe8bf54eb1 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2499,7 +2499,7 @@ bool SelectionDAG::MaskedValueIsAllOnes(SDValue V, const APInt &Mask,
 /// sense to specify which elements are demanded or undefined, therefore
 /// they are simply ignored.
 bool SelectionDAG::isSplatValue(SDValue V, const APInt &DemandedElts,
-                                APInt &UndefElts, unsigned Depth) {
+                                APInt &UndefElts, unsigned Depth) const {
   EVT VT = V.getValueType();
   assert(VT.isVector() && "Vector type expected");
 
@@ -2623,7 +2623,7 @@ bool SelectionDAG::isSplatValue(SDValue V, const APInt &DemandedElts,
 }
 
 /// Helper wrapper to main isSplatValue function.
-bool SelectionDAG::isSplatValue(SDValue V, bool AllowUndefs) {
+bool SelectionDAG::isSplatValue(SDValue V, bool AllowUndefs) const {
   EVT VT = V.getValueType();
   assert(VT.isVector() && "Vector type expected");