From 97a238a64737245ec8977d0242059e90e0ac01fb Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Mon, 7 Mar 2011 16:38:15 +0200
Subject: [PATCH] drc: rm unneeded writebacks in stubs, as suggested by Ari64

also fix leftover moves, missed by last cleanup commit.
---
 libpcsxcore/new_dynarec/assem_arm.c   |  6 ++++++
 libpcsxcore/new_dynarec/new_dynarec.c | 18 ++++++++----------
 2 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/libpcsxcore/new_dynarec/assem_arm.c b/libpcsxcore/new_dynarec/assem_arm.c
index 95304103..bc9e5cd0 100644
--- a/libpcsxcore/new_dynarec/assem_arm.c
+++ b/libpcsxcore/new_dynarec/assem_arm.c
@@ -2646,12 +2646,14 @@ do_readstub(int n)
   emit_writeword(rs,(int)&address);
   //emit_pusha();
   save_regs(reglist);
+#ifndef PCSX
   ds=i_regs!=&regs[i];
   int real_rs=(itype[i]==LOADLR)?-1:get_reg(i_regmap,rs1[i]);
   u_int cmask=ds?-1:(0x100f|~i_regs->wasconst);
   if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&0x100f,i);
   wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&cmask&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
   if(!ds) wb_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&~0x100f,i);
+#endif
   emit_shrimm(rs,16,1);
   int cc=get_reg(i_regmap,CCREG);
   if(cc<0) {
@@ -2842,12 +2844,14 @@ do_writestub(int n)
   }
   //emit_pusha();
   save_regs(reglist);
+#ifndef PCSX
   ds=i_regs!=&regs[i];
   int real_rs=get_reg(i_regmap,rs1[i]);
   u_int cmask=ds?-1:(0x100f|~i_regs->wasconst);
   if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&0x100f,i);
   wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&cmask&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
   if(!ds) wb_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&~0x100f,i);
+#endif
   emit_shrimm(rs,16,1);
   int cc=get_reg(i_regmap,CCREG);
   if(cc<0) {
@@ -2979,12 +2983,14 @@ do_unalignedwritestub(int n)
   emit_writeword(temp2,(int)&address);
 
   save_regs(reglist);
+#ifndef PCSX
   ds=i_regs!=&regs[i];
   real_rs=get_reg(i_regmap,rs1[i]);
   u_int cmask=ds?-1:(0x100f|~i_regs->wasconst);
   if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&0x100f,i);
   wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&cmask&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
   if(!ds) wb_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&~0x100f,i);
+#endif
   emit_shrimm(addr,16,1);
   int cc=get_reg(i_regmap,CCREG);
   if(cc<0) {
diff --git a/libpcsxcore/new_dynarec/new_dynarec.c b/libpcsxcore/new_dynarec/new_dynarec.c
index 72af92d1..cfce0210 100644
--- a/libpcsxcore/new_dynarec/new_dynarec.c
+++ b/libpcsxcore/new_dynarec/new_dynarec.c
@@ -3129,38 +3129,36 @@ void store_assemble(int i,struct regstat *i_regs)
 
   if (opcode[i]==0x28) { // SB
     if(!c||memtarget) {
-      int x=0;
+      int x=0,a=temp;
 #ifdef BIG_ENDIAN_MIPS
       if(!c) emit_xorimm(addr,3,temp);
       else x=((constmap[i][s]+offset)^3)-(constmap[i][s]+offset);
 #else
-      if(c) x=(constmap[i][s]+offset)-(constmap[i][s]+offset);
-      else if (addr!=temp) emit_mov(addr,temp);
+      if(!c) a=addr;
 #endif
       //gen_tlb_addr_w(temp,map);
       //emit_writebyte_indexed(tl,(int)rdram-0x80000000,temp);
-      emit_writebyte_indexed_tlb(tl,x,temp,map,temp);
+      emit_writebyte_indexed_tlb(tl,x,a,map,a);
     }
     type=STOREB_STUB;
   }
   if (opcode[i]==0x29) { // SH
     if(!c||memtarget) {
-      int x=0;
+      int x=0,a=temp;
 #ifdef BIG_ENDIAN_MIPS
       if(!c) emit_xorimm(addr,2,temp);
       else x=((constmap[i][s]+offset)^2)-(constmap[i][s]+offset);
 #else
-      if(c) x=(constmap[i][s]+offset)-(constmap[i][s]+offset);
-      else if (addr!=temp) emit_mov(addr,temp);
+      if(!c) a=addr;
 #endif
       //#ifdef
       //emit_writehword_indexed_tlb(tl,x,temp,map,temp);
       //#else
       if(map>=0) {
-        gen_tlb_addr_w(temp,map);
-        emit_writehword_indexed(tl,x,temp);
+        gen_tlb_addr_w(a,map);
+        emit_writehword_indexed(tl,x,a);
       }else
-        emit_writehword_indexed(tl,(int)rdram-0x80000000+x,temp);
+        emit_writehword_indexed(tl,(int)rdram-0x80000000+x,a);
     }
     type=STOREH_STUB;
   }
-- 
2.39.5