[clang] [RISCV][NFC] Remove unneeded defining name of `vundefined` (PR #101643)

[Brandon Wu via cfe-commits]

https://github.com/4vtomat created https://github.com/llvm/llvm-project/pull/101643

`vundefined` doesn't have corresponding named IR, instead it generates
`poison` value, we already define the `Name` for C intrinsics, so we
don't need the defining name at all.


>From df6b40a85ca89259751583b66429d59e92f4fe6d Mon Sep 17 00:00:00 2001
From: Brandon Wu <brandon.wu at sifive.com>
Date: Fri, 2 Aug 2024 02:15:33 -0700
Subject: [PATCH] [RISCV][NFC] Remove unneeded defining name of `vundefined`

`vundefined` doesn't have corresponding named IR, instead it generates
`poison` value, we already define the `Name` for C intrinsics, so we
don't need the defining name at all.
---
 clang/include/clang/Basic/riscv_vector.td | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/clang/include/clang/Basic/riscv_vector.td b/clang/include/clang/Basic/riscv_vector.td
index a0820e2093bc2..13d2efb4e6109 100644
--- a/clang/include/clang/Basic/riscv_vector.td
+++ b/clang/include/clang/Basic/riscv_vector.td
@@ -2407,10 +2407,10 @@ let HasMasked = false, HasVL = false, IRName = "" in {
       ManualCodegen = [{
         return llvm::PoisonValue::get(ResultType);
       }] in {
-    def vundefined : RVVBuiltin<"v", "v", "csilxfd">;
+    def : RVVBuiltin<"v", "v", "csilxfd">;
     let RequiredFeatures = ["Zvfbfmin"] in
-      def vundefined_bf16 : RVVBuiltin<"v", "v", "y">;
-    def vundefined_u : RVVBuiltin<"Uv", "Uv", "csil">;
+      def : RVVBuiltin<"v", "v", "y">;
+    def : RVVBuiltin<"Uv", "Uv", "csil">;
 
     foreach nf = NFList in {
       let NF = nf in {