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[PATCH, AArch64, v3 6/6] Enable -matomic-ool by default

From: Richard Henderson <richard dot henderson at linaro dot org>
To: gcc-patches at gcc dot gnu dot org
Cc: ramana dot radhakrishnan at arm dot com, agraf at suse dot de, marcus dot shawcroft at arm dot com, james dot greenhalgh at arm dot com
Date: Thu, 1 Nov 2018 21:46:48 +0000
Subject: [PATCH, AArch64, v3 6/6] Enable -matomic-ool by default
References: <20181101214648.29432-1-richard.henderson@linaro.org>

Do Not Merge Upstream.
This is for agraf and his testing within SLES.
---
 gcc/common/config/aarch64/aarch64-common.c | 6 ++++--
 gcc/config/aarch64/aarch64.c               | 6 ++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/gcc/common/config/aarch64/aarch64-common.c b/gcc/common/config/aarch64/aarch64-common.c
index dd7d4267340..a916df3bcbe 100644
--- a/gcc/common/config/aarch64/aarch64-common.c
+++ b/gcc/common/config/aarch64/aarch64-common.c
@@ -32,9 +32,11 @@
 #include "diagnostic.h"
 #include "params.h"
 
-#ifdef  TARGET_BIG_ENDIAN_DEFAULT
 #undef  TARGET_DEFAULT_TARGET_FLAGS
-#define TARGET_DEFAULT_TARGET_FLAGS (MASK_BIG_END)
+#ifdef  TARGET_BIG_ENDIAN_DEFAULT
+#define TARGET_DEFAULT_TARGET_FLAGS (MASK_BIG_END | MASK_ATOMIC_OOL)
+#else
+#define TARGET_DEFAULT_TARGET_FLAGS (MASK_ATOMIC_OOL)
 #endif
 
 #undef  TARGET_HANDLE_OPTION
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 9ab8b95c344..b60f364799d 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -18043,9 +18043,11 @@ aarch64_run_selftests (void)
 #undef TARGET_C_MODE_FOR_SUFFIX
 #define TARGET_C_MODE_FOR_SUFFIX aarch64_c_mode_for_suffix
 
-#ifdef TARGET_BIG_ENDIAN_DEFAULT
 #undef  TARGET_DEFAULT_TARGET_FLAGS
-#define TARGET_DEFAULT_TARGET_FLAGS (MASK_BIG_END)
+#ifdef  TARGET_BIG_ENDIAN_DEFAULT
+#define TARGET_DEFAULT_TARGET_FLAGS (MASK_BIG_END | MASK_ATOMIC_OOL)
+#else
+#define TARGET_DEFAULT_TARGET_FLAGS (MASK_ATOMIC_OOL)
 #endif
 
 #undef TARGET_CLASS_MAX_NREGS
-- 
2.17.2

References:
- [PATCH, AArch64, v3 0/6] LSE atomics out-of-line
  - From: Richard Henderson

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