From 22ec74897c7eb14f9b7930a037676d1fa2ac4033 Mon Sep 17 00:00:00 2001
From: Oleg Endo <olegendo@gcc.gnu.org>
Date: Fri, 12 Jan 2018 12:12:38 +0000
Subject: [PATCH] backport: re PR target/81819 ([RX] internal compiler error:
 in rx_is_restricted_memory_address, at config/rx/rx.c:311)

gcc/
	Backport from mainline
	2018-01-12  Oleg Endo  <olegendo@gcc.gnu.org>

	PR target/81819
	* config/rx/rx.c (rx_is_restricted_memory_address):
	Handle SUBREG case.

From-SVN: r256579
---
 gcc/ChangeLog      | 9 +++++++++
 gcc/config/rx/rx.c | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3e8e313fbfe..965223201f1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2018-01-12  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	Backport from mainline
+	2018-01-12  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	PR target/81819
+	* config/rx/rx.c (rx_is_restricted_memory_address):
+	Handle SUBREG case.
+
 2018-01-12  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR rtl-optimization/83565
diff --git a/gcc/config/rx/rx.c b/gcc/config/rx/rx.c
index 1e74f380bdb..414c64b2b5b 100644
--- a/gcc/config/rx/rx.c
+++ b/gcc/config/rx/rx.c
@@ -284,6 +284,9 @@ rx_is_restricted_memory_address (rtx mem, machine_mode mode)
       /* Simple memory addresses are OK.  */
       return true;
 
+    case SUBREG:
+      return RX_REG_P (SUBREG_REG (mem));
+
     case PRE_DEC:
     case POST_INC:
       return false;