[SFN] don't eliminate regs in markers

Eliminate regs in debug bind insns, but not in markers.

for  gcc/ChangeLog

	PR bootstrap/83396
	* reload1.c (eliminate_regs_in_insn): Skip debug markers.

From-SVN: r255612

gcc/ChangeLog

+2017-12-13  Alexandre Oliva <aoliva@redhat.com>
+
+	PR bootstrap/83396
+	* reload1.c (eliminate_regs_in_insn): Skip debug markers.
+
 2017-12-13  Jakub Jelinek  <jakub@redhat.com>
 
 	* tree-cfg.c (verify_gimple_in_cfg): Verify no non-label stmts

gcc/reload1.c

@@ -3202,7 +3202,7 @@ eliminate_regs_in_insn (rtx_insn *insn, int replace)
 		  || GET_CODE (PATTERN (insn)) == USE
 		  || GET_CODE (PATTERN (insn)) == CLOBBER
 		  || GET_CODE (PATTERN (insn)) == ASM_INPUT);
-      if (DEBUG_INSN_P (insn))
+      if (DEBUG_BIND_INSN_P (insn))
 	INSN_VAR_LOCATION_LOC (insn)
 	  = eliminate_regs (INSN_VAR_LOCATION_LOC (insn), VOIDmode, insn);
       return 0;