reload1.c (choose_reload_regs): When inheriting from the frame pointer, don't clobber it.

	* reload1.c (choose_reload_regs): When inheriting from the frame
	pointer, don't clobber it.

From-SVN: r25669

gcc/ChangeLog

+Wed Mar 10 18:56:31 1999  J"orn Rennecke <amylaar@cygnus.co.uk>
+
+	* reload1.c (choose_reload_regs): When inheriting from the frame
+	pointer, don't clobber it.
+
 Wed Mar 10 08:01:52 1999  Bruce Korb <korb@datadesign.com>
 
 	* fixinc/fixinc.*: Resync-ed with the files in this

gcc/reload1.c

@@ -5930,6 +5930,9 @@ choose_reload_regs (chain)
 			      || (TEST_HARD_REG_BIT (reg_used_in_insn, i)
 				  && reload_out[r]
 				  && ! TEST_HARD_REG_BIT (reg_reloaded_dead, i))
+			      /* Don't clobber the frame pointer.  */
+			      || (i == HARD_FRAME_POINTER_REGNUM
+				  && reload_out[r])
 			      /* Don't really use the inherited spill reg
 				 if we need it wider than we've got it.  */
 			      || (GET_MODE_SIZE (reload_mode[r])