[llvm] Add matchers m_ExtractSubvector and m_InsertSubvector (PR #120212)

[Simon Pilgrim via llvm-commits]

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@@ -182,15 +187,23 @@ TEST_F(SelectionDAGPatternMatchTest, matchTernaryOp) {
   EXPECT_TRUE(sd_match(ExtractELT, m_ExtractElt(m_Value(), m_Value())));
   EXPECT_TRUE(sd_match(ExtractELT, m_ExtractElt(m_Value(), m_ConstInt())));
   EXPECT_TRUE(sd_match(ExtractELT, m_ExtractElt(m_Value(), m_SpecificInt(1))));
+
+  EXPECT_TRUE(sd_match(InsertSubvector,
+                       m_InsertSubvector(m_Value(), m_Value(), m_Value())));
+  EXPECT_TRUE(sd_match(
+      InsertSubvector,
+      m_InsertSubvector(m_Specific(V2), m_Specific(V3), m_Specific(Idx0))));
 }
 
 TEST_F(SelectionDAGPatternMatchTest, matchBinaryOp) {
   SDLoc DL;
   auto Int32VT = EVT::getIntegerVT(Context, 32);
   auto Float32VT = EVT::getFloatingPointVT(32);
+  auto BigVInt32VT = EVT::getVectorVT(Context, Int32VT, 8);
   auto VInt32VT = EVT::getVectorVT(Context, Int32VT, 4);
 
   SDValue V1 = DAG->getCopyFromReg(DAG->getEntryNode(), DL, 6, VInt32VT);
+  auto Idx0 = DAG->getVectorIdxConstant(0, DL);
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RKSimon wrote:

Please can you add true/false tests with a m_SpecificInt() for the index as well

https://github.com/llvm/llvm-project/pull/120212