flow.c: Update comment.

[gcc.git] / gcc / ChangeLog

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+Sun Oct 11 16:49:15 EDT 1998  John Wehle  (john@feith.com)
+
+       * flow.c: Update comment.
+       (notice_stack_pointer_modification): New static function.
+       (record_volatile_insns): Use it.
+       (mark_regs_live_at_end): Mark the stack pointer as alive
+       at the end of the function if current_function_sp_is_unchanging
+       is set.
+       (life_analysis_1): Set current_function_sp_is_unchanging.
+       * function.c: Define it.
+       (init_function_start): Initialize it.
+       * output.h: Declare it.
+       * reorg.c (fill_simple_delay_slots, dbr_schedule): Mark
+       the stack pointer as alive at the end of the function if
+       current_function_sp_is_unchanging is set.
+       * i386.c (ix86_epilogue): Optimize the restoring
+       of the stack pointer.
+
 Mon Oct 12 02:03:25 1998  Jason Merrill  <jason@yorick.cygnus.com>
 
        * i386/t-cygwin32 (TARGET_LIBGCC2_CFLAGS): Define.