From: Ilya Enkovich <ilya.enkovich@intel.com>
Date: Fri, 3 Oct 2014 08:43:21 +0000 (+0000)
Subject: lra-constraints.c (inherit_in_ebb): Handle calls with multiple return values.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=54bddf1d58d0ff4c2625a0310b8ff7853d73b871;p=gcc.git

lra-constraints.c (inherit_in_ebb): Handle calls with multiple return values.


gcc/
	* lra-constraints.c (inherit_in_ebb): Handle calls with
	multiple return values.
	* caller-save.c (save_call_clobbered_regs): Likewise.

From-SVN: r215839
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4a7366d4e90..884495f4ab2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2014-10-03  Ilya Enkovich  <ilya.enkovich@intel.com>
+
+	* lra-constraints.c (inherit_in_ebb): Handle calls with
+	multiple return values.
+	* caller-save.c (save_call_clobbered_regs): Likewise.
+
 2014-10-03  Jakub Jelinek  <jakub@redhat.com>
 
 	* tree-vect-data-refs.c (vect_permute_load_chain,
diff --git a/gcc/caller-save.c b/gcc/caller-save.c
index 11df2ecc171..e28facba7be 100644
--- a/gcc/caller-save.c
+++ b/gcc/caller-save.c
@@ -879,8 +879,13 @@ save_call_clobbered_regs (void)
 		  if (GET_CODE (pat) == PARALLEL)
 		    pat = XVECEXP (pat, 0, 0);
 		  dest = SET_DEST (pat);
-		  newpat = gen_rtx_SET (VOIDmode, cheap, copy_rtx (dest));
-		  chain = insert_one_insn (chain, 0, -1, newpat);
+		  /* For multiple return values dest is PARALLEL.
+		     Currently we handle only single return value case.  */
+		  if (REG_P (dest))
+		    {
+		      newpat = gen_rtx_SET (VOIDmode, cheap, copy_rtx (dest));
+		      chain = insert_one_insn (chain, 0, -1, newpat);
+		    }
 		}
 	    }
           last = chain;
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c
index 5f6839968d6..f1642f3b390 100644
--- a/gcc/lra-constraints.c
+++ b/gcc/lra-constraints.c
@@ -5348,16 +5348,21 @@ inherit_in_ebb (rtx_insn *head, rtx_insn *tail)
 		  if (GET_CODE (pat) == PARALLEL)
 		    pat = XVECEXP (pat, 0, 0);
 		  dest = SET_DEST (pat);
-		  start_sequence ();
-		  emit_move_insn (cheap, copy_rtx (dest));
-		  restore = get_insns ();
-		  end_sequence ();
-		  lra_process_new_insns (curr_insn, NULL, restore,
-					 "Inserting call parameter restore");
-		  /* We don't need to save/restore of the pseudo from
-		     this call.	 */
-		  usage_insns[regno].calls_num = calls_num;
-		  bitmap_set_bit (&check_only_regs, regno);
+		  /* For multiple return values dest is PARALLEL.
+		     Currently we handle only single return value case.  */
+		  if (REG_P (dest))
+		    {
+		      start_sequence ();
+		      emit_move_insn (cheap, copy_rtx (dest));
+		      restore = get_insns ();
+		      end_sequence ();
+		      lra_process_new_insns (curr_insn, NULL, restore,
+					     "Inserting call parameter restore");
+		      /* We don't need to save/restore of the pseudo from
+			 this call.	 */
+		      usage_insns[regno].calls_num = calls_num;
+		      bitmap_set_bit (&check_only_regs, regno);
+		    }
 		}
 	    }
 	  to_inherit_num = 0;