From 6dca58837033b7850cd5747643390070e931d89c Mon Sep 17 00:00:00 2001
From: Nekotekina <nekotekina@gmail.com>
Date: Thu, 13 May 2021 23:14:27 +0300
Subject: [PATCH] SPU LLVM: improve MPYH instruction

Rewritten to use 16-bit multiplication, as in SPU ASMJIT.
---
 rpcs3/Emu/Cell/SPURecompiler.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/rpcs3/Emu/Cell/SPURecompiler.cpp b/rpcs3/Emu/Cell/SPURecompiler.cpp
index 355ae0eb6f..8e9400e02d 100644
--- a/rpcs3/Emu/Cell/SPURecompiler.cpp
+++ b/rpcs3/Emu/Cell/SPURecompiler.cpp
@@ -6255,19 +6255,19 @@ public:
 	}
 
 	template <typename TA, typename TB>
-	static auto mpyh(TA&& a, TB&& b)
+	auto mpyh(TA&& a, TB&& b)
 	{
-		return (std::forward<TA>(a) >> 16) * (std::forward<TB>(b) << 16);
+		return bitcast<u32[4]>(bitcast<u16[8]>((std::forward<TA>(a) >> 16)) * bitcast<u16[8]>(std::forward<TB>(b))) << 16;
 	}
 
 	template <typename TA, typename TB>
-	static auto mpyu(TA&& a, TB&& b)
+	auto mpyu(TA&& a, TB&& b)
 	{
 		return (std::forward<TA>(a) << 16 >> 16) * (std::forward<TB>(b) << 16 >> 16);
 	}
 
 	template <typename TA, typename TB>
-	static auto fm(TA&& a, TB&& b)
+	auto fm(TA&& a, TB&& b)
 	{
 		return (std::forward<TA>(a)) * (std::forward<TB>(b));
 	}