[llvm] [InstCombine] Resolve FIXME: Use commutative matchers (PR #81060)

[Craig Topper via llvm-commits]

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@@ -2542,8 +2539,8 @@ Instruction *InstCombinerImpl::visitAnd(BinaryOperator &I) {
     }
   }
 
-  if (match(&I, m_And(m_OneUse(m_Shl(m_ZExt(m_Value(X)), m_Value(Y))),
-                      m_SignMask())) &&
+  if (match(&I, m_c_And(m_OneUse(m_Shl(m_ZExt(m_Value(X)), m_Value(Y))),
+                        m_SignMask())) &&
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topperc wrote:

m_SignMask is a constant so it should be canonicalized to the right hand side

https://github.com/llvm/llvm-project/pull/81060