https://github.com/albertbolt1 created 
https://github.com/llvm/llvm-project/pull/191655

#185382 

>From 9e883bc77477ec5d3e676d137273c7182b2ac733 Mon Sep 17 00:00:00 2001
From: albertbolt <[email protected]>
Date: Sat, 11 Apr 2026 23:04:13 +0530
Subject: [PATCH] added vector vector shl

---
 clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp 
b/clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp
index 75dd19d880444..7c0395b225fc8 100644
--- a/clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp
@@ -740,6 +740,12 @@ static mlir::Value emitCommonNeonBuiltinExpr(
                      std::string("unimplemented AArch64 builtin call: ") +
                          ctx.BuiltinInfo.getName(builtinID));
     return mlir::Value{};
+  case NEON::BI__builtin_neon_vshl_v:
+  case NEON::BI__builtin_neon_vshlq_v:
+    return cir::ShiftOp::create(cgf.getBuilder(), loc, vTy,
+                              cgf.getBuilder().createBitcast(ops[0], vTy), 
+                              cgf.getBuilder().createBitcast(ops[1], vTy),
+                              true);
   case NEON::BI__builtin_neon_vmul_v:
   case NEON::BI__builtin_neon_vmulq_v:
     return cgf.getBuilder().emitIntrinsicCallOp(loc, "aarch64.neon.pmul", vTy,

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