From 91f4ce12c5ff67da628138f9157d13c7e9e8ab2c Mon Sep 17 00:00:00 2001
From: Elad <18193363+elad335@users.noreply.github.com>
Date: Thu, 19 Mar 2026 10:49:55 +0200
Subject: [PATCH] SPU Analyzer: Add pure opcode tag

---
 rpcs3/Emu/Cell/SPUAnalyser.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/rpcs3/Emu/Cell/SPUAnalyser.h b/rpcs3/Emu/Cell/SPUAnalyser.h
index a6c788faad..1598551c7d 100644
--- a/rpcs3/Emu/Cell/SPUAnalyser.h
+++ b/rpcs3/Emu/Cell/SPUAnalyser.h
@@ -13,6 +13,7 @@ struct spu_itype
 	static constexpr struct quadrop_tag{} _quadrop{}; // 4-op Instructions
 	static constexpr struct xfloat_tag{} xfloat{}; // Instructions producing xfloat values
 	static constexpr struct zregmod_tag{} zregmod{}; // Instructions not modifying any GPR
+	static constexpr struct pure_tag{} pure{}; // Instructions that always produce the same values as long as arguments are equal
 
 	enum class type : unsigned char
 	{
@@ -301,6 +302,12 @@ struct spu_itype
 	{
 		return (value >= HEQ && value <= STQR) || (value >= BR && value <= BIHNZ);
 	}
+
+	// Test for instructions which always produce the same values as long as arguments and immediate values are equal
+	friend constexpr bool operator &(type value, pure_tag)
+	{
+		return (value >= ILH && value <= CLGTI);
+	}
 };
 
 using spu_itype_t = spu_itype::type;