From 904a64a45e6b4286f84c438876f77352ebfcf016 Mon Sep 17 00:00:00 2001
From: bogwi <bogwi@rakumail.jp>
Date: Tue, 6 May 2025 14:21:18 +0900
Subject: [PATCH] Add support for SoaPointer nil comparison in
 lb_emit_comp_against_nil

---
 src/llvm_backend_expr.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/llvm_backend_expr.cpp b/src/llvm_backend_expr.cpp
index d313d65a3..da0de10c4 100644
--- a/src/llvm_backend_expr.cpp
+++ b/src/llvm_backend_expr.cpp
@@ -3146,6 +3146,18 @@ gb_internal lbValue lb_emit_comp_against_nil(lbProcedure *p, TokenKind op_kind,
 			}
 		}
 		break;
+	
+	case Type_SoaPointer:
+		{
+			// NOTE(bill): An SoaPointer is essentially just a pointer for nil comparison
+			lbValue ptr = lb_emit_struct_ev(p, x, 0); // Extract the base pointer component (field 0)
+			if (op_kind == Token_CmpEq) {
+				res.value = LLVMBuildIsNull(p->builder, ptr.value, "");
+			} else if (op_kind == Token_NotEq) {
+				res.value = LLVMBuildIsNotNull(p->builder, ptr.value, "");
+			}
+			return res;
+		}
 
 	case Type_Union:
 		{