drc: fix $ra evicting on JAL

[pcsx_rearmed.git] / libpcsxcore / new_dynarec / new_dynarec.c

diff --git a/libpcsxcore/new_dynarec/new_dynarec.c b/libpcsxcore/new_dynarec/new_dynarec.c
index 893f258..573d0cd 100644 (file)
--- a/libpcsxcore/new_dynarec/new_dynarec.c
+++ b/libpcsxcore/new_dynarec/new_dynarec.c
@@ -690,6 +690,10 @@ void lsn(u_char hsn[], int i, int *preferred_reg)
     hsn[RHASH]=1;
     hsn[RHTBL]=1;
   }
+  // due to the way JAL is currently done we need DS not to evict $ra
+  if(i>0&&itype[i-1]==UJUMP&&rt1[i-1]==31) {
+    hsn[31]=0;
+  }
   // Coprocessor load/store needs FTEMP, even if not declared
   if(itype[i]==C1LS||itype[i]==C2LS) {
     hsn[FTEMP]=0;
@@ -8881,8 +8885,6 @@ int new_recompile_block(int addr)
           clear_const(&current,rt1[i]);
           alloc_cc(&current,i);
           dirty_reg(&current,CCREG);
-          ooo[i]=1;
-          delayslot_alloc(&current,i+1);
           if (rt1[i]==31) {
             alloc_reg(&current,i,31);
             dirty_reg(&current,31);
@@ -8893,6 +8895,8 @@ int new_recompile_block(int addr)
             #endif
             //current.is32|=1LL<<rt1[i];
           }
+          ooo[i]=1;
+          delayslot_alloc(&current,i+1);
           //current.isconst=0; // DEBUG
           ds=1;
           //printf("i=%d, isconst=%x\n",i,current.isconst);