m68hc11.c (m6812_cost): Make cost of add higher than a shift to avoid adding a regist...

[gcc.git] / gcc / ChangeLog

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+2002-03-15  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
+
+       * config/m68hc11/m68hc11.c (m6812_cost): Make cost of add higher
+       than a shift to avoid adding a register with itself.
+       (m68hc11_memory_move_cost): Take into account NO_REGS.
+       (m68hc11_register_move_cost): Update and use memory move cost
+       for soft registers.
+       (m68hc11_address_cost): Make cost of valid offset not 0 so that
+       it gives more opportunities to cse to optimize.
+       * config/m68hc11/m68hc11.h (REGISTER_MOVE_COST): Pass the mode.
+       * config/m68hc11/m68hc11-protos.h (m68hc11_register_move_cost): Update.
+
 2002-03-15  Mark Mitchell  <mark@codesourcery.com>
 
        * c-common.c (statement_code_p): Handle CLEANUP_STMT.