[llvm] [RISCV] Add ISAInfoTest tests for a few XQCI extensions (PR #120060)

[Sudharsan Veeravalli via llvm-commits]

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@@ -662,6 +662,21 @@ TEST(ParseArchString, RejectsConflictingExtensions) {
     EXPECT_EQ(toString(RISCVISAInfo::parseArchString(Input, true).takeError()),
               "'xqcia' is only supported for 'rv32'");
   }
+
+  for (StringRef Input : {"rv64i_xqcicsr0p2"}) {
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svs-quic wrote:

Thanks Sam. I wasn't aware of this.

https://github.com/llvm/llvm-project/pull/120060