drc: fix a bug with loop reg allocation

diff --git a/libpcsxcore/new_dynarec/new_dynarec.c b/libpcsxcore/new_dynarec/new_dynarec.c
index f1a0def..680617a 100644 (file)
--- a/libpcsxcore/new_dynarec/new_dynarec.c
+++ b/libpcsxcore/new_dynarec/new_dynarec.c
@@ -9693,6 +9693,13 @@ int new_recompile_block(int addr)
             else f_regmap[hr]=-1;
           }
           else if(branch_regs[i].regmap[hr]>=0) f_regmap[hr]=branch_regs[i].regmap[hr];
+          // make sure mapping hasn't changed
+          int hr2;
+          for(hr2=0;hr2<HOST_REGS;hr2++)
+            if(hr2!=hr&&f_regmap[hr]==branch_regs[i].regmap[hr2]) {
+              f_regmap[hr]=-1;
+              break;
+            }
           if(itype[i+1]==STORE||itype[i+1]==STORELR||itype[i+1]==C1LS
           ||itype[i+1]==SHIFT||itype[i+1]==COP1||itype[i+1]==FLOAT
           ||itype[i+1]==FCOMP||itype[i+1]==FCONV