From: Alan Modra <amodra@gmail.com>
Date: Wed, 26 Feb 2014 21:57:40 +0000 (+1030)
Subject: re PR target/57935 (ICE in rs6000_secondary_reload_inner:15181, type = load)
X-Git-Tag: releases/gcc-4.9.0~648
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3157b8795f728659e6c5e55e474a12d101049829;p=thirdparty%2Fgcc.git

re PR target/57935 (ICE in rs6000_secondary_reload_inner:15181, type = load)

	PR target/57935
	* reload1.c (emit_input_reload_insns): When reload_override_in,
	set old to rl->in_reg when rl->in_reg is a subreg.

From-SVN: r208186
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 89778888c4e2..cdc06fb210c5 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2014-02-27  Alan Modra  <amodra@gmail.com>
+
+	PR target/57935
+	* reload1.c (emit_input_reload_insns): When reload_override_in,
+	set old to rl->in_reg when rl->in_reg is a subreg.
+
 2014-02-26  Richard Biener  <rguenther@suse.de>
 
 	PR bootstrap/60343
diff --git a/gcc/reload1.c b/gcc/reload1.c
index b789ee8f19f3..3d735eeeec97 100644
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -7238,9 +7238,12 @@ emit_input_reload_insns (struct insn_chain *chain, struct reload *rl,
   /* delete_output_reload is only invoked properly if old contains
      the original pseudo register.  Since this is replaced with a
      hard reg when RELOAD_OVERRIDE_IN is set, see if we can
-     find the pseudo in RELOAD_IN_REG.  */
+     find the pseudo in RELOAD_IN_REG.  This is also used to
+     determine whether a secondary reload is needed.  */
   if (reload_override_in[j]
-      && REG_P (rl->in_reg))
+      && (REG_P (rl->in_reg)
+	  || (GET_CODE (rl->in_reg) == SUBREG
+	      && REG_P (SUBREG_REG (rl->in_reg)))))
     {
       oldequiv = old;
       old = rl->in_reg;