[llvm] [Exegesis][RISCV] Add initial RVV support (PR #128767)

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git-clang-format --diff 3968ebd00da80a08de84f83a101ebb23710f6631 a0651b5b9b3af5beb0cce58e5d5c5d147521e918 --extensions h,cpp -- llvm/tools/llvm-exegesis/lib/RISCV/RISCVExegesisPasses.h llvm/tools/llvm-exegesis/lib/RISCV/RISCVExegesisPostprocessing.cpp llvm/tools/llvm-exegesis/lib/RISCV/RISCVExegesisPreprocessing.cpp llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h llvm/tools/llvm-exegesis/lib/MCInstrDescView.cpp llvm/tools/llvm-exegesis/lib/MCInstrDescView.h llvm/tools/llvm-exegesis/lib/RISCV/Target.cpp llvm/tools/llvm-exegesis/lib/SerialSnippetGenerator.cpp llvm/tools/llvm-exegesis/lib/Target.cpp llvm/tools/llvm-exegesis/lib/Target.h llvm/tools/llvm-exegesis/llvm-exegesis.cpp
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diff --git a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h
index 135aec0c81..275ee0c286 100644
--- a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h
+++ b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h
@@ -427,13 +427,7 @@ inline static bool isValidRoundingMode(unsigned Mode) {
 } // namespace RISCVFPRndMode
 
 namespace RISCVVXRndMode {
-enum RoundingMode {
-  RNU = 0,
-  RNE = 1,
-  RDN = 2,
-  ROD = 3,
-  Invalid
-};
+enum RoundingMode { RNU = 0, RNE = 1, RDN = 2, ROD = 3, Invalid };
 
 inline static StringRef roundingModeToString(RoundingMode RndMode) {
   switch (RndMode) {

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https://github.com/llvm/llvm-project/pull/128767