i965: Update the live interval when coalescing regs.

2010-10-13 22:39:06 -07:00
parent 0c6752026c
commit b8613d70da
1 changed files with 4 additions and 0 deletions
@@ -2563,6 +2563,10 @@ fs_visitor::register_coalesce()
 	 continue;
      }

+      /* Update live interval so we don't have to recalculate. */
+      this->virtual_grf_use[inst->src[0].reg] = MAX2(virtual_grf_use[inst->src[0].reg],
+						     virtual_grf_use[inst->dst.reg]);
+
      /* Rewrite the later usage to point at the source of the move to
       * be removed.
       */