From: notaz <notasas@gmail.com>
Date: Wed, 12 Oct 2011 23:27:43 +0000 (+0300)
Subject: drc: implement literal dupe merging
X-Git-Tag: r11~47
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=777506907b6d2283e9a7fb51cdcad497b8989e24;p=pcsx_rearmed.git

drc: implement literal dupe merging

doesn't seem to make much difference, but theoretically should help.
---

diff --git a/libpcsxcore/new_dynarec/assem_arm.c b/libpcsxcore/new_dynarec/assem_arm.c
index c0e41162..29ad13f6 100644
--- a/libpcsxcore/new_dynarec/assem_arm.c
+++ b/libpcsxcore/new_dynarec/assem_arm.c
@@ -2637,12 +2637,24 @@ void literal_pool(int n)
   int i;
   for(i=0;i<literalcount;i++)
   {
+    u_int l_addr=(u_int)out;
+    int j;
+    for(j=0;j<i;j++) {
+      if(literals[j][1]==literals[i][1]) {
+        //printf("dup %08x\n",literals[i][1]);
+        l_addr=literals[j][0];
+        break;
+      }
+    }
     ptr=(u_int *)literals[i][0];
-    u_int offset=(u_int)out-(u_int)ptr-8;
+    u_int offset=l_addr-(u_int)ptr-8;
     assert(offset<4096);
     assert(!(offset&3));
     *ptr|=offset;
-    output_w32(literals[i][1]);
+    if(l_addr==(u_int)out) {
+      literals[i][0]=l_addr; // remember for dupes
+      output_w32(literals[i][1]);
+    }
   }
   literalcount=0;
 }