[clang] [CIR] Extract CIR_VAOp base class for VAStartOp and VAEndOp (PR #185258)

[Henrich Lauko via cfe-commits]

https://github.com/xlauko created https://github.com/llvm/llvm-project/pull/185258

Both ops share identical arguments and assembly format. Extract a common
base class to eliminate the duplication.

>From a729e0ae25f39ade3970b28f34fb94e68becde77 Mon Sep 17 00:00:00 2001
From: xlauko <xlauko at mail.muni.cz>
Date: Sun, 8 Mar 2026 08:41:34 +0100
Subject: [PATCH] [CIR] Extract CIR_VAOp base class for VAStartOp and VAEndOp

Both ops share identical arguments and assembly format. Extract a common
base class to eliminate the duplication.
---
 clang/include/clang/CIR/Dialect/IR/CIROps.td | 23 +++++++++-----------
 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/clang/include/clang/CIR/Dialect/IR/CIROps.td b/clang/include/clang/CIR/Dialect/IR/CIROps.td
index 79eef71229192..44c8d69cd53ca 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIROps.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIROps.td
@@ -6246,7 +6246,15 @@ def CIR_ATan2Op : CIR_BinaryFPToFPBuiltinOp<"atan2", "ATan2Op"> {
 // Variadic Operations
 //===----------------------------------------------------------------------===//
 
-def CIR_VAStartOp : CIR_Op<"va_start"> {
+class CIR_VAOp<string mnemonic> : CIR_Op<mnemonic> {
+  let arguments = (ins CIR_PointerType:$arg_list);
+
+  let assemblyFormat = [{
+    $arg_list attr-dict `:` type(operands)
+  }];
+}
+
+def CIR_VAStartOp : CIR_VAOp<"va_start"> {
   let summary = "Starts a variable argument list";
   let description = [{
     The cir.va_start operation models the C/C++ va_start macro by
@@ -6275,14 +6283,9 @@ def CIR_VAStartOp : CIR_Op<"va_start"> {
     cir.va_start %p : !cir.ptr<!rec___va_list_tag>
     ```
   }];
-  let arguments = (ins CIR_PointerType:$arg_list);
-
-  let assemblyFormat = [{
-    $arg_list attr-dict `:` type(operands)
-  }];
 }
 
-def CIR_VAEndOp : CIR_Op<"va_end"> {
+def CIR_VAEndOp : CIR_VAOp<"va_end"> {
   let summary = "Ends a variable argument list";
   let description = [{
     The `cir.va_end` operation models the C/C++ va_end macro by finalizing
@@ -6310,12 +6313,6 @@ def CIR_VAEndOp : CIR_Op<"va_end"> {
     cir.va_end %p : !cir.ptr<!rec___va_list_tag>
     ```
   }];
-
-  let arguments = (ins CIR_PointerType:$arg_list);
-
-  let assemblyFormat = [{
-    $arg_list attr-dict `:` type(operands)
-  }];
 }
 
 def CIR_VACopyOp : CIR_Op<"va_copy"> {