[clang] [RISCV] Prevent checkRVVTypeSupport from issuing more than 1 diagnostic. (PR #74950)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff 02e02b9a8f0e22ffc0d6c070b132a88e94f02861 45b1acc66d1c3cfd87d8031be4aaa8a2870efc9a -- clang/lib/Sema/SemaChecking.cpp clang/test/Sema/riscv-vector-zve32x-check.c clang/test/Sema/riscv-vector-zve64x-check.c
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 44c3cf01a6..498bb04d74 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -6119,17 +6119,17 @@ void Sema::checkRVVTypeSupport(QualType Ty, SourceLocation Loc, Decl *D) {
       !TI.hasFeature("zve64x"))
     Diag(Loc, diag::err_riscv_type_requires_extension, D) << Ty << "zve64x";
   else if (Info.ElementType->isFloat16Type() && !TI.hasFeature("zvfh") &&
-      !TI.hasFeature("zvfhmin"))
+           !TI.hasFeature("zvfhmin"))
     Diag(Loc, diag::err_riscv_type_requires_extension, D)
         << Ty << "zvfh or zvfhmin";
   else if (Info.ElementType->isBFloat16Type() &&
-      !TI.hasFeature("experimental-zvfbfmin"))
+           !TI.hasFeature("experimental-zvfbfmin"))
     Diag(Loc, diag::err_riscv_type_requires_extension, D) << Ty << "zvfbfmin";
   else if (Info.ElementType->isSpecificBuiltinType(BuiltinType::Float) &&
-      !TI.hasFeature("zve32f"))
+           !TI.hasFeature("zve32f"))
     Diag(Loc, diag::err_riscv_type_requires_extension, D) << Ty << "zve32f";
   else if (Info.ElementType->isSpecificBuiltinType(BuiltinType::Double) &&
-      !TI.hasFeature("zve64d"))
+           !TI.hasFeature("zve64d"))
     Diag(Loc, diag::err_riscv_type_requires_extension, D) << Ty << "zve64d";
   // Given that caller already checked isRVVType() before calling this function,
   // if we don't have at least zve32x supported, then we need to emit error.

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https://github.com/llvm/llvm-project/pull/74950