From 9888fcf2133f253b890c9fbd586dbafa0a273044 Mon Sep 17 00:00:00 2001
From: kobalicek <kobalicek.petr@gmail.com>
Date: Thu, 13 Nov 2025 21:50:54 +0100
Subject: [PATCH] [bug] Fixed a bug in Vec::half() that halved to ZMM instead
 of XMM

---
 asmjit/x86/x86operand.cpp | 4 ++++
 asmjit/x86/x86operand.h   | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/asmjit/x86/x86operand.cpp b/asmjit/x86/x86operand.cpp
index 8477dcf..9a29406 100644
--- a/asmjit/x86/x86operand.cpp
+++ b/asmjit/x86/x86operand.cpp
@@ -141,6 +141,10 @@ UNIT(x86_operand) {
   EXPECT_EQ(zmm7.ymm(), ymm7);
   EXPECT_EQ(zmm7.zmm(), zmm7);
 
+  EXPECT_EQ(xmm4.half(), xmm4);
+  EXPECT_EQ(ymm4.half(), xmm4);
+  EXPECT_EQ(zmm4.half(), ymm4);
+
   INFO("Checking x86::Mm register properties");
   EXPECT_TRUE(Mm().is_reg());
   EXPECT_TRUE(mm2.is_reg());
diff --git a/asmjit/x86/x86operand.h b/asmjit/x86/x86operand.h
index 2f5357f..8725d8b 100644
--- a/asmjit/x86/x86operand.h
+++ b/asmjit/x86/x86operand.h
@@ -237,7 +237,7 @@ class Vec : public UniVec {
   //! was ZMM, or XMM for whatever else input.
   [[nodiscard]]
   ASMJIT_INLINE_CONSTEXPR Vec half() const noexcept {
-    return Vec(is_vec512() ? signature_of_t<RegType::kVec256>() : signature_of_t<RegType::kVec512>(), id());
+    return Vec(is_vec512() ? signature_of_t<RegType::kVec256>() : signature_of_t<RegType::kVec128>(), id());
   }
 
   //! \}