[clang] [llvm] [RISC-V][RVY] Fix round-trip and order of arch strings with 'y' (PR #227865)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,c -- clang/test/Driver/print-supported-extensions-riscv.c llvm/lib/Support/RISCVISAUtils.cpp llvm/lib/TargetParser/RISCVISAInfo.cpp llvm/unittests/TargetParser/RISCVISAInfoTest.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp b/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
index 1ac95e241..6f4d171f2 100644
--- a/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
+++ b/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
@@ -214,9 +214,9 @@ TEST(ParseArchString, RejectsInvalidBaseISA) {
 TEST(ParseArchString, RejectsInvalidYPosition) {
   // 'y' is only allowed as a singular base ISA ('rv32y'/'rv64y') or immediately
   // after 'i' or 'e' ('rv32iy'/'rv32ey'). Anything else should be rejected.
-  for (StringRef Input : {"rv32gy0p910", "rv64gy0p910", "rv32imy0p910",
-                          "rv64imy0p910", "rv32i_m_y0p910", "rv64y0p910_y0p910",
-                          "rv64iy0p910_y0p910"}) {
+  for (StringRef Input :
+       {"rv32gy0p910", "rv64gy0p910", "rv32imy0p910", "rv64imy0p910",
+        "rv32i_m_y0p910", "rv64y0p910_y0p910", "rv64iy0p910_y0p910"}) {
     EXPECT_EQ(toString(RISCVISAInfo::parseArchString(Input, true).takeError()),
               "invalid standard user-level extension 'y'");
   }
@@ -251,7 +251,8 @@ TEST(ParseArchString, AcceptsRVYBaseISA) {
     const auto &ExtsRV32EY = InfoRV32EY.getExtensions();
     EXPECT_EQ(ExtsRV32EY.size(), 2UL); // e, y
     EXPECT_TRUE(ExtsRV32EY.at("e") == (RISCVISAUtils::ExtensionVersion{2, 0}));
-    EXPECT_TRUE(ExtsRV32EY.at("y") == (RISCVISAUtils::ExtensionVersion{0, 910}));
+    EXPECT_TRUE(ExtsRV32EY.at("y") ==
+                (RISCVISAUtils::ExtensionVersion{0, 910}));
     EXPECT_EQ(InfoRV32EY.getXLen(), 32U);
     EXPECT_EQ(InfoRV32EY.toString(), "rv32e2p0_y0p910");
   }

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https://github.com/llvm/llvm-project/pull/227865