[NDS32] Remove -mgp-direct/-mno-gp-direct options.

gcc/
	* common/config/nds32/nds32-common.c (TARGET_DEFAULT_TARGET_FLAGS):
	Remove MASK_GP_DIRECT flag.
	* config/nds32/nds32.h (MULTILIB_DEFAULTS): Have -mcmodel=medium as
	one of the multilib default options.
	* config/nds32/nds32.opt (mgp-direct): Remove.
	* config/nds32/t-mlibs (MULTILIB_OPTIONS): Use -mcmodel instead of
	-mgp-direct.  We also remove unnecessary -mlittle-endian/-mbig-endian.

From-SVN: r219510

gcc/ChangeLog

 2015-01-13  Chung-Ju Wu  <jasonwucj@gmail.com>
 
+	* common/config/nds32/nds32-common.c (TARGET_DEFAULT_TARGET_FLAGS):
+	Remove MASK_GP_DIRECT flag.
+	* config/nds32/nds32.h (MULTILIB_DEFAULTS): Have -mcmodel=medium as
+	one of the multilib default options.
+	* config/nds32/nds32.opt (mgp-direct): Remove.
+	* config/nds32/t-mlibs (MULTILIB_OPTIONS): Use -mcmodel instead of
+	-mgp-direct.  We also remove unnecessary -mlittle-endian/-mbig-endian.
+
+2015-01-13  Chung-Ju Wu  <jasonwucj@gmail.com>
+
 	* config/nds32/nds32.opt (mcmodel): Add new option.
 	* config/nds32/nds32-opts.h (nds32_cmodel_type): Add new enum type
 	to describe code model.

gcc/common/config/nds32/nds32-common.c

@@ -95,14 +95,12 @@ static const struct default_options nds32_option_optimization_table[] =
 
    Other MASK_XXX flags are set individually.
    By default we enable
-     TARGET_GP_DIRECT: Generate gp-imply instruction.
      TARGET_16_BIT   : Generate 16/32 bit mixed length instruction.
      TARGET_PERF_EXT : Generate performance extention instrcution.
      TARGET_CMOV     : Generate conditional move instruction.  */
 #undef TARGET_DEFAULT_TARGET_FLAGS
 #define TARGET_DEFAULT_TARGET_FLAGS		\
   (TARGET_CPU_DEFAULT				\
-   | MASK_GP_DIRECT				\
    | MASK_16_BIT				\
    | MASK_PERF_EXT				\
    | MASK_CMOV)

gcc/config/nds32/nds32.h

@@ -391,17 +391,22 @@ enum nds32_builtins
 #define ENDFILE_SPEC \
   " %{!mno-ctor-dtor:crtend1.o%s}"
 
-/* The TARGET_BIG_ENDIAN_DEFAULT is defined if we configure gcc
-   with --target=nds32be-* setting.
-   Check gcc/config.gcc for more information.
-   In addition, currently we only have elf toolchain,
-   where mgp-direct is always the default.  */
+/* The TARGET_BIG_ENDIAN_DEFAULT is defined if we
+   configure gcc with --target=nds32be-* setting.
+   Check gcc/config.gcc for more information.  */
 #ifdef TARGET_BIG_ENDIAN_DEFAULT
-#define MULTILIB_DEFAULTS { "mbig-endian", "mgp-direct" }
+#  define NDS32_ENDIAN_DEFAULT "mbig-endian"
 #else
-#define MULTILIB_DEFAULTS { "mlittle-endian", "mgp-direct" }
+#  define NDS32_ENDIAN_DEFAULT "mlittle-endian"
 #endif
 
+/* Currently we only have elf toolchain,
+   where -mcmodel=medium is always the default.  */
+#define NDS32_CMODEL_DEFAULT "mcmodel=medium"
+
+#define MULTILIB_DEFAULTS \
+  { NDS32_ENDIAN_DEFAULT, NDS32_CMODEL_DEFAULT }
+
 
 /* Run-time Target Specification.  */
 

gcc/config/nds32/nds32.opt

@@ -53,10 +53,6 @@ m16-bit
 Target Report Mask(16_BIT)
 Generate 16-bit instructions.
 
-mgp-direct
-Target Report Mask(GP_DIRECT)
-Generate GP base instructions directly.
-
 misr-vector-size=
 Target RejectNegative Joined UInteger Var(nds32_isr_vector_size) Init(NDS32_DEFAULT_ISR_VECTOR_SIZE)
 Specify the size of each interrupt vector, which must be 4 or 16.

gcc/config/nds32/t-mlibs

@@ -18,21 +18,9 @@
 # along with GCC; see the file COPYING3.  If not see
 # <http://www.gnu.org/licenses/>.
 
-# We need to build following multilibs combinations:
-#
-#   1. <None multilibs>
-#   2. -mlittle-endian
-#   3. -mbig-endian
-#   4. -mgp-direct
-#   5. -mno-gp-direct
-#   6. -mlittle-endian -mgp-direct
-#   7. -mlittle-endian -mno-gp-direct
-#   8. -mbig-endian -mgp-direct
-#   9. -mbig-endian -mno-gp-direct
-#
 # We also define a macro MULTILIB_DEFAULTS in nds32.h that tells the
 # driver program which options are defaults for this target and thus
 # do not need to be handled specially.
-MULTILIB_OPTIONS = mlittle-endian/mbig-endian mgp-direct/mno-gp-direct
+MULTILIB_OPTIONS = mcmodel=small/mcmodel=medium/mcmodel=large
 
 # ------------------------------------------------------------------------