From: Vladimir Makarov <vmakarov@redhat.com>
Date: Fri, 11 Jul 2014 17:19:53 +0000 (+0000)
Subject: lra-constraints.c (remove_inheritance_pseudos): Process destination pseudo too.
X-Git-Tag: releases/gcc-5.1.0~6393
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=12b308fa865bb6ac7f30671e332ec17926556da4;p=thirdparty%2Fgcc.git

lra-constraints.c (remove_inheritance_pseudos): Process destination pseudo too.

2014-07-11  Vladimir Makarov  <vmakarov@redhat.com>

	* lra-constraints.c (remove_inheritance_pseudos): Process
	destination pseudo too.

From-SVN: r212464
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 45b862bad6e0..c7f0fd47f9a8 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-07-11  Vladimir Makarov  <vmakarov@redhat.com>
+
+	* lra-constraints.c (remove_inheritance_pseudos): Process
+	destination pseudo too.
+
 2014-07-11  Rong Xu  <xur@google.com>
 
 	* gcov-tool.c (gcov_output_files): Fix build error introduced in
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c
index baed7e7d57c2..a43f8dc42088 100644
--- a/gcc/lra-constraints.c
+++ b/gcc/lra-constraints.c
@@ -5697,6 +5697,20 @@ remove_inheritance_pseudos (bitmap remove_pseudos)
 			SUBREG_REG (SET_SRC (set)) = SET_SRC (prev_set);
 		      else
 			SET_SRC (set) = SET_SRC (prev_set);
+		      /* As we are finishing with processing the insn
+			 here, check the destination too as it might
+			 inheritance pseudo for another pseudo.  */
+		      if (bitmap_bit_p (remove_pseudos, dregno)
+			  && bitmap_bit_p (&lra_inheritance_pseudos, dregno)
+			  && (restore_regno
+			      = lra_reg_info[dregno].restore_regno) >= 0)
+			{
+			  if (GET_CODE (SET_DEST (set)) == SUBREG)
+			    SUBREG_REG (SET_DEST (set))
+			      = regno_reg_rtx[restore_regno];
+			  else
+			    SET_DEST (set) = regno_reg_rtx[restore_regno];
+			}
 		      lra_push_insn_and_update_insn_regno_info (curr_insn);
 		      lra_set_used_insn_alternative_by_uid
 			(INSN_UID (curr_insn), -1);