From cea889bde5b61e62df351bf74262aae4b17b0508 Mon Sep 17 00:00:00 2001
From: joevt <joevt@shaw.ca>
Date: Sat, 7 Dec 2024 04:24:47 -0800
Subject: [PATCH] ppcopcodes: Cleanup lzu lzux lhau lhaux.

---
 cpu/ppc/ppcopcodes.cpp | 20 ++++----------------
 1 file changed, 4 insertions(+), 16 deletions(-)

diff --git a/cpu/ppc/ppcopcodes.cpp b/cpu/ppc/ppcopcodes.cpp
index e4512af..6602f5a 100644
--- a/cpu/ppc/ppcopcodes.cpp
+++ b/cpu/ppc/ppcopcodes.cpp
@@ -1659,10 +1659,8 @@ void dppc_interpreter::ppc_lzu(uint32_t opcode) {
         ea += ppc_result_a;
         uint32_t ppc_result_d = mmu_read_vmem<T>(opcode, ea);
         ppc_store_iresult_reg(reg_d, ppc_result_d);
-        if (!(is_601 && (reg_a == 0))) {
-            uint32_t ppc_result_a = ea;
-            ppc_store_iresult_reg(reg_a, ppc_result_a);
-        }
+        uint32_t ppc_result_a = ea;
+        ppc_store_iresult_reg(reg_a, ppc_result_a);
     } else {
         ppc_exception_handler(Except_Type::EXC_PROGRAM, Exc_Cause::ILLEGAL_OP);
     }
@@ -1697,10 +1695,8 @@ void dppc_interpreter::ppc_lzux(uint32_t opcode) {
         uint32_t ea = ppc_result_a + ppc_result_b;
         uint32_t ppc_result_d = mmu_read_vmem<T>(opcode, ea);
         ppc_store_iresult_reg(reg_d, ppc_result_d);
-        if (!(is_601 && (reg_a == 0))) {
-            uint32_t ppc_result_a = ea;
-            ppc_store_iresult_reg(reg_a, ppc_result_a);
-        }
+        ppc_result_a = ea;
+        ppc_store_iresult_reg(reg_a, ppc_result_a);
     } else {
         ppc_exception_handler(Except_Type::EXC_PROGRAM, Exc_Cause::ILLEGAL_OP);
     }
@@ -1733,10 +1729,6 @@ void dppc_interpreter::ppc_lhau(uint32_t opcode) {
         ppc_store_iresult_reg(reg_d, int32_t(val));
         uint32_t ppc_result_a = ea;
         ppc_store_iresult_reg(reg_a, ppc_result_a);
-        if (!(is_601 && (reg_a == 0))) {
-            uint32_t ppc_result_a = ea;
-            ppc_store_iresult_reg(reg_a, ppc_result_a);
-        }
     } else {
         ppc_exception_handler(Except_Type::EXC_PROGRAM, Exc_Cause::ILLEGAL_OP);
     }
@@ -1753,10 +1745,6 @@ void dppc_interpreter::ppc_lhaux(uint32_t opcode) {
         ppc_store_iresult_reg(reg_d, int32_t(val));
         uint32_t ppc_result_a = ea;
         ppc_store_iresult_reg(reg_a, ppc_result_a);
-        if (!(is_601 && (reg_a == 0))) {
-            uint32_t ppc_result_a = ea;
-            ppc_store_iresult_reg(reg_a, ppc_result_a);
-        }
     }
     else {
         ppc_exception_handler(Except_Type::EXC_PROGRAM, Exc_Cause::ILLEGAL_OP);