[llvm] [amdgpu] Add HasBufferInv AMDGPUSubtargetFeature (PR #226254)

[Matt Arsenault via llvm-commits]

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@@ -2875,6 +2875,18 @@ TEST(TargetParserTest, testAMDGPUgetFeatureBitset) {
   EXPECT_TRUE(Empty.empty());
 }
 
+TEST(TargetParserTest, testAMDGPUBufferInvInstFeature) {
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arsenm wrote:

Don't really need this test 

https://github.com/llvm/llvm-project/pull/226254