re PR rtl-optimization/87727 (gcc.target/sparc/overflow-2.c FAILs)

	PR rtl-optimization/87727
	* combine.c (cant_combine_insn_p): On a LEAF_REGISTERS target, combine
	again moves from leaf hard registers.

	* final.c (final_scan_insn_1) <NOTE_INSN_INLINE_ENTRY>: Minor tweak.

From-SVN: r267328

gcc/ChangeLog

+2018-12-21  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR rtl-optimization/87727
+	* combine.c (cant_combine_insn_p): On a LEAF_REGISTERS target, combine
+	again moves from leaf hard registers.
+
+	* final.c (final_scan_insn_1) <NOTE_INSN_INLINE_ENTRY>: Minor tweak.
+
 2018-12-21  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/88522

gcc/combine.c

@@ -2353,7 +2353,12 @@ cant_combine_insn_p (rtx_insn *insn)
     dest = SUBREG_REG (dest);
   if (REG_P (src) && REG_P (dest)
       && ((HARD_REGISTER_P (src)
-	   && ! TEST_HARD_REG_BIT (fixed_reg_set, REGNO (src)))
+	   && ! TEST_HARD_REG_BIT (fixed_reg_set, REGNO (src))
+#ifdef LEAF_REGISTERS
+	   && ! LEAF_REGISTERS [REGNO (src)])
+#else
+	   )
+#endif
 	  || (HARD_REGISTER_P (dest)
 	      && ! TEST_HARD_REG_BIT (fixed_reg_set, REGNO (dest))
 	      && targetm.class_likely_spilled_p (REGNO_REG_CLASS (REGNO (dest))))))

gcc/final.c

@@ -2430,10 +2430,9 @@ final_scan_insn_1 (rtx_insn *insn, FILE *file, int optimize_p ATTRIBUTE_UNUSED,
 
 	case NOTE_INSN_INLINE_ENTRY:
 	  gcc_checking_assert (cfun->debug_nonbind_markers);
-	  if (!DECL_IGNORED_P (current_function_decl))
+	  if (!DECL_IGNORED_P (current_function_decl)
+	      && notice_source_line (insn, NULL))
 	    {
-	      if (!notice_source_line (insn, NULL))
-		break;
 	      (*debug_hooks->inline_entry) (LOCATION_BLOCK
 					    (NOTE_MARKER_LOCATION (insn)));
 	      goto output_source_line;