* target.def (target_option.optimization): New hook.

	* doc/tm.texi.in (OPTIMIZATION_OPTIONS): Change to
	TARGET_OPTION_OPTIMIZATION hook.
	* doc/tm.texi: Regenerate.
	* hooks.c (hook_void_int_int): New.
	* hooks.h (hook_void_int_int): Declare.
	* opts.c: Don't include tm_p.h.
	(decode_options): Use targetm.target_option.optimization instead
	of OPTIMIZATION_OPTIONS.
	* system.h (OPTIMIZATION_OPTIONS): Poison.
	* config/arm/arm-protos.h (arm_optimization_options): Remove.
	* config/arm/arm.c (TARGET_OPTION_OPTIMIZATION): Define.
	(arm_optimization_options): Rename to arm_option_optimization.
	Make static.
	* config/arm/arm.h (OPTIMIZATION_OPTIONS): Remove.
	* config/cris/cris.c (TARGET_OPTION_OPTIMIZATION): Define.
	(cris_option_optimization): New.
	* config/cris/cris.h (OPTIMIZATION_OPTIONS): Remove.
	* config/crx/crx.c (TARGET_OPTION_OPTIMIZATION): Define.
	(crx_option_optimization): New.
	* config/crx/crx.h (OPTIMIZATION_OPTIONS): Remove.
	* config/frv/frv-protos.h (frv_optimization_options): Remove.
	* config/frv/frv.c (TARGET_OPTION_OPTIMIZATION): Define.
	(frv_optimization_options): Rename to frv_option_optimization.
	Make static.
	* config/frv/frv.h (OPTIMIZATION_OPTIONS): Remove.
	* config/h8300/h8300.c (h8300_option_optimization): New.
	(TARGET_OPTION_OPTIMIZATION): Define.
	* config/h8300/h8300.h (OPTIMIZATION_OPTIONS): Remove.
	* config/i386/i386-protos.h (optimization_options): Remove.
	* config/i386/i386.c (optimization_options): Rename to
	ix86_option_optimization.  Make static.
	(TARGET_OPTION_OPTIMIZATION): Define.
	* config/i386/i386.h (OPTIMIZATION_OPTIONS): Remove.
	* config/ia64/ia64-protos.h (ia64_optimization_options): Remove.
	* config/ia64/ia64.c (TARGET_OPTION_OPTIMIZATION): Define.
	(ia64_optimization_options): Rename to ia64_option_optimization.
	Make static.  Call SUBTARGET_OPTIMIZATION_OPTIONS.
	* config/ia64/ia64.h (OPTIMIZATION_OPTIONS): Remove.  Remove
	commented-out definition.
	* config/ia64/vms.h (SUBTARGET_OPTIMIZATION_OPTIONS): Define
	instead of OPTIMIZATION_OPTIONS.
	* config/m32r/m32r.c (TARGET_OPTION_OPTIMIZATION): Define.
	(m32r_option_optimization): New.
	* config/m32r/m32r.h (OPTIMIZATION_OPTIONS): Remove.
	* config/m68hc11/m68hc11-protos.h (m68hc11_optimization_options):
	Remove.
	* config/mcore/mcore.c (TARGET_OPTION_OPTIMIZATION): Define.
	(mcore_option_optimization): New.
	* config/mcore/mcore.h (OPTIMIZATION_OPTIONS): Remove.
	* config/mep/mep-protos.h (mep_optimization_options): Remove.
	* config/mep/mep.c (TARGET_OPTION_OPTIMIZATION): Define.
	(mep_optimization_options): Rename to mep_option_optimization.
	Make static.  Take unused level and size parameters.
	* config/mep/mep.h (OPTIMIZATION_OPTIONS): Remove.
	* config/mmix/mmix.c (TARGET_OPTION_OPTIMIZATION): Define.
	(mmix_option_optimization): New.
	* config/mmix/mmix.h (OPTIMIZATION_OPTIONS): Remove.
	* config/pdp11/pdp11.c (TARGET_OPTION_OPTIMIZATION): Define.
	(pdp11_option_optimization): New.
	* config/pdp11/pdp11.h (OPTIMIZATION_OPTIONS): Remove.
	* config/rs6000/rs6000-protos.h (optimization_options): Remove.
	* config/rs6000/rs6000.c (TARGET_OPTION_OPTIMIZATION): Define.
	(optimization_options): Rename to rs6000_option_optimization.
	Make static.
	* config/rs6000/rs6000.h (OPTIMIZATION_OPTIONS): Remove.
	* config/rx/rx-protos.h (rx_set_optimization_options): Remove.
	* config/rx/rx.c (rx_set_optimization_options): Rename to
	rx_option_optimization.  Make static.  Take unused level and size
	parameters.
	(TARGET_OPTION_OPTIMIZATION): Define.
	* config/rx/rx.h (OPTIMIZATION_OPTIONS): Remove.
	* config/s390/s390-protos.h (optimization_options): Remove.
	* config/s390/s390.c (optimization_options): Rename to
	s390_option_optimization.  Make static.  Don't mark size parameter
	unused.
	(TARGET_OPTION_OPTIMIZATION): Define.
	* config/s390/s390.h (OPTIMIZATION_OPTIONS): Remove.
	* config/sh/sh-protos.h (sh_optimization_options): Remove.
	* config/sh/sh.c (TARGET_OPTION_OPTIMIZATION): Define.
	(sh_optimization_options): Rename to sh_option_optimization.  Make
	static.  Don't mark parameters unused.
	* config/sh/sh.h (OPTIMIZATION_OPTIONS): Remove.
	* config/spu/spu-protos.h (spu_optimization_options): Remove.
	* config/spu/spu.c (TARGET_OPTION_OPTIMIZATION): Define.
	(spu_optimization_options): Rename to spu_option_optimization.
	Make static.
	* config/spu/spu.h (OPTIMIZATION_OPTIONS): Remove.
	* config/v850/v850.c (TARGET_OPTION_OPTIMIZATION): Define.
	(v850_option_optimization): New.
	* config/v850/v850.h (OPTIMIZATION_OPTIONS): Remove.
	* config/xtensa/xtensa.c (TARGET_OPTION_OPTIMIZATION): Define.
	(xtensa_option_optimization): New.
	* config/xtensa/xtensa.h (OPTIMIZATION_OPTIONS): Remove.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@164335 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 16 insertions, 0 deletions

diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
index 0820ab72a46..7b261e3f3f2 100644
--- a/gcc/config/xtensa/xtensa.c
+++ b/gcc/config/xtensa/xtensa.c
@@ -119,6 +119,7 @@ const enum reg_class xtensa_regno_to_class[FIRST_PSEUDO_REGISTER] =
 };
 
 static void xtensa_option_override (void);
+static void xtensa_option_optimization (int, int);
 static enum internal_test map_test_to_internal_test (enum rtx_code);
 static rtx gen_int_relational (enum rtx_code, rtx, rtx, int *);
 static rtx gen_float_relational (enum rtx_code, rtx, rtx);
@@ -254,6 +255,8 @@ static const int reg_nonleaf_alloc_order[FIRST_PSEUDO_REGISTER] =
 
 #undef TARGET_OPTION_OVERRIDE
 #define TARGET_OPTION_OVERRIDE xtensa_option_override
+#undef TARGET_OPTION_OPTIMIZATION
+#define TARGET_OPTION_OPTIMIZATION xtensa_option_optimization
 
 struct gcc_target targetm = TARGET_INITIALIZER;
 
@@ -2168,6 +2171,19 @@ xtensa_option_override (void)
     }
 }
 
+/* Implement TARGET_OPTION_OPTIMIZATION.  */
+
+static void
+xtensa_option_optimization (int level ATTRIBUTE_UNUSED,
+			    int size ATTRIBUTE_UNUSED)
+{
+  /* Reordering blocks for Xtensa is not a good idea unless the
+     compiler understands the range of conditional branches.
+     Currently all branch relaxation for Xtensa is handled in the
+     assembler, so GCC cannot do a good job of reordering blocks.  Do
+     not enable reordering unless it is explicitly requested.  */
+  flag_reorder_blocks = 0;
+}
 
 /* A C compound statement to output to stdio stream STREAM the
    assembler syntax for an instruction operand X.  X is an RTL