From: davem <davem@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 16 Sep 2015 17:46:21 +0000 (+0000)
Subject: Fix endianness assumption in LRA.
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=48a08d24aeaa92b032d91f74b8b2ed0ee5b1c561;p=thirdparty%2Fgcc.git

Fix endianness assumption in LRA.

gcc/
	* lra-constraints.c (simplify_operand_subreg): Do not assume that
	lowpart of a SUBREG has offset zero.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@227833 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 49b84380490b..1fad63688e73 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-09-16  David S. Miller  <davem@davemloft.net>
+
+	* lra-constraints.c (simplify_operand_subreg): Do not assume that
+	lowpart of a SUBREG has offset zero.
+
 2015-09-16  Jeff Law  <law@redhat.com>
 
 	PR tree-optimization/47679
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c
index cdb2695acfa8..fc8e43d66d98 100644
--- a/gcc/lra-constraints.c
+++ b/gcc/lra-constraints.c
@@ -1545,7 +1545,7 @@ simplify_operand_subreg (int nop, machine_mode reg_mode)
 	  bool insert_before, insert_after;
 
 	  PUT_MODE (new_reg, mode);
-          subreg = simplify_gen_subreg (innermode, new_reg, mode, 0);
+          subreg = gen_lowpart_SUBREG (innermode, new_reg);
 	  bitmap_set_bit (&lra_subreg_reload_pseudos, REGNO (new_reg));
 
 	  insert_before = (type != OP_OUT);