[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))));
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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