[PATCH 5/7] [ARC] Enable indexed loads for elf targers.

[Claudiu Zissulescu <Claudiu.Zissulescu@synopsys.com>]

gcc/
2017-02-28  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.opt (mindexed-loads): Use initial value
	TARGET_INDEXED_LOADS_DEFAULT.
	(mauto-modify-reg): Use initial value
	TARGET_AUTO_MODIFY_REG_DEFAULT.
	* config/arc/elf.h (TARGET_INDEXED_LOADS_DEFAULT): Define.
	(TARGET_AUTO_MODIFY_REG_DEFAULT): Likewise.
	* config/arc/linux.h (TARGET_INDEXED_LOADS_DEFAULT): Define.
	(TARGET_AUTO_MODIFY_REG_DEFAULT): Likewise.
---
 gcc/config/arc/arc.opt | 4 ++--
 gcc/config/arc/elf.h   | 8 ++++++++
 gcc/config/arc/linux.h | 8 ++++++++
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/gcc/config/arc/arc.opt b/gcc/config/arc/arc.opt
index f01a2ff..ed2b827 100644
--- a/gcc/config/arc/arc.opt
+++ b/gcc/config/arc/arc.opt
@@ -270,11 +270,11 @@ Target RejectNegative Var(arc_tune, TUNE_ARC700_4_2_XMAC)
 Tune for ARC700 R4.2 Cpu with XMAC block.
 
 mindexed-loads
-Target Var(TARGET_INDEXED_LOADS)
+Target Var(TARGET_INDEXED_LOADS) Init(TARGET_INDEXED_LOADS_DEFAULT)
 Enable the use of indexed loads.
 
 mauto-modify-reg
-Target Var(TARGET_AUTO_MODIFY_REG)
+Target Var(TARGET_AUTO_MODIFY_REG) Init(TARGET_AUTO_MODIFY_REG_DEFAULT)
 Enable the use of pre/post modify with register displacement.
 
 mmul32x16
diff --git a/gcc/config/arc/elf.h b/gcc/config/arc/elf.h
index c5794f8..43f3408 100644
--- a/gcc/config/arc/elf.h
+++ b/gcc/config/arc/elf.h
@@ -58,3 +58,11 @@ along with GCC; see the file COPYING3.  If not see
 /* Bare-metal toolchains do not need a thread pointer register.  */
 #undef TARGET_ARC_TP_REGNO_DEFAULT
 #define TARGET_ARC_TP_REGNO_DEFAULT -1
+
+/* Indexed loads are default.  */
+#undef TARGET_INDEXED_LOADS_DEFAULT
+#define TARGET_INDEXED_LOADS_DEFAULT 1
+
+/* Pre/post modify with register displacement are default.  */
+#undef TARGET_AUTO_MODIFY_REG_DEFAULT
+#define TARGET_AUTO_MODIFY_REG_DEFAULT 1
diff --git a/gcc/config/arc/linux.h b/gcc/config/arc/linux.h
index 83e5a1d..d8e0063 100644
--- a/gcc/config/arc/linux.h
+++ b/gcc/config/arc/linux.h
@@ -83,3 +83,11 @@ along with GCC; see the file COPYING3.  If not see
 #define SUBTARGET_CPP_SPEC "\
    %{pthread:-D_REENTRANT} \
 "
+
+/* Indexed loads are default off.  */
+#undef TARGET_INDEXED_LOADS_DEFAULT
+#define TARGET_INDEXED_LOADS_DEFAULT 0
+
+/* Pre/post modify with register displacement are default off.  */
+#undef TARGET_AUTO_MODIFY_REG_DEFAULT
+#define TARGET_AUTO_MODIFY_REG_DEFAULT 0
-- 
1.9.1