angstrom-layers: meta-openembedded: replace poky gcc 4.5 sources with OE ones

This needs further investigation, but for now we can get the tested sources into the poky gcc harness

Signed-off-by: Koen Kooi <k-kooi@ti.com>

1 files changed, 603 insertions, 0 deletions

diff --git a/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99408.patch b/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99408.patch
new file mode 100644
index 0000000000..1d873ba653
--- /dev/null
+++ b/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99408.patch
@@ -0,0 +1,603 @@
+2010-10-01  Julian Brown  <julian@codesourcery.com>
+
+        Revert:
+
+        Backport from FSF:
+
+        2010-08-07  Marcus Shawcroft  <marcus.shawcroft@arm.com>
+
+        gcc/
+        * config/arm/linux-atomic.c (SUBWORD_VAL_CAS): Instantiate with
+        'unsigned short' and 'unsigned char' instead of 'short' and
+        'char'. (SUBWORD_BOOL_CAS): Likewise.
+        (SUBWORD_SYNC_OP): Likewise.
+        (SUBWORD_TEST_AND_SET): Likewise.
+        (FETCH_AND_OP_WORD): Parenthesise INF_OP
+        (SUBWORD_SYNC_OP): Likewise.
+        (OP_AND_FETCH_WORD): Likewise.
+
+        gcc/testsuite/
+        * lib/target-supports.exp: (check_effective_target_sync_int_long):
+        Add arm*-*-linux-gnueabi.
+        (check_effective_target_sync_char_short): Likewise.
+
+=== modified file 'gcc/config/arm/arm-protos.h'
+Index: gcc-4.5/gcc/config/arm/arm-protos.h
+===================================================================
+--- gcc-4.5.orig/gcc/config/arm/arm-protos.h
++++ gcc-4.5/gcc/config/arm/arm-protos.h
+@@ -151,11 +151,6 @@ extern const char *vfp_output_fstmd (rtx
+ extern void arm_set_return_address (rtx, rtx);
+ extern int arm_eliminable_register (rtx);
+ extern const char *arm_output_shift(rtx *, int);
+-extern void arm_expand_sync (enum machine_mode, struct arm_sync_generator *,
+-                            rtx, rtx, rtx, rtx);
+-extern const char *arm_output_memory_barrier (rtx *);
+-extern const char *arm_output_sync_insn (rtx, rtx *);
+-extern unsigned int arm_sync_loop_insns (rtx , rtx *);
+ 
+ extern bool arm_output_addr_const_extra (FILE *, rtx);
+ 
+Index: gcc-4.5/gcc/config/arm/arm.c
+===================================================================
+--- gcc-4.5.orig/gcc/config/arm/arm.c
++++ gcc-4.5/gcc/config/arm/arm.c
+@@ -605,7 +605,6 @@ static int thumb_call_reg_needed;
+ #define FL_NEON       (1 << 20)       /* Neon instructions.  */
+ #define FL_ARCH7EM    (1 << 21)              /* Instructions present in the ARMv7E-M
+                                         architecture.  */
+-#define FL_ARCH7      (1 << 22)       /* Architecture 7.  */
+ 
+ #define FL_IWMMXT     (1 << 29)              /* XScale v2 or "Intel Wireless MMX technology".  */
+ 
+@@ -626,7 +625,7 @@ static int thumb_call_reg_needed;
+ #define FL_FOR_ARCH6ZK FL_FOR_ARCH6K
+ #define FL_FOR_ARCH6T2 (FL_FOR_ARCH6 | FL_THUMB2)
+ #define FL_FOR_ARCH6M  (FL_FOR_ARCH6 & ~FL_NOTM)
+-#define FL_FOR_ARCH7   ((FL_FOR_ARCH6T2 & ~FL_NOTM) | FL_ARCH7)
++#define FL_FOR_ARCH7   (FL_FOR_ARCH6T2 &~ FL_NOTM)
+ #define FL_FOR_ARCH7A  (FL_FOR_ARCH7 | FL_NOTM | FL_ARCH6K)
+ #define FL_FOR_ARCH7R  (FL_FOR_ARCH7A | FL_DIV)
+ #define FL_FOR_ARCH7M  (FL_FOR_ARCH7 | FL_DIV)
+@@ -664,9 +663,6 @@ int arm_arch6 = 0;
+ /* Nonzero if this chip supports the ARM 6K extensions.  */
+ int arm_arch6k = 0;
+ 
+-/* Nonzero if this chip supports the ARM 7 extensions.  */
+-int arm_arch7 = 0;
+-
+ /* Nonzero if instructions not present in the 'M' profile can be used.  */
+ int arm_arch_notm = 0;
+ 
+@@ -1638,7 +1634,6 @@ arm_override_options (void)
+   arm_arch6 = (insn_flags & FL_ARCH6) != 0;
+   arm_arch6k = (insn_flags & FL_ARCH6K) != 0;
+   arm_arch_notm = (insn_flags & FL_NOTM) != 0;
+-  arm_arch7 = (insn_flags & FL_ARCH7) != 0;
+   arm_arch7em = (insn_flags & FL_ARCH7EM) != 0;
+   arm_arch_thumb2 = (insn_flags & FL_THUMB2) != 0;
+   arm_arch_xscale = (insn_flags & FL_XSCALE) != 0;
+@@ -16595,17 +16590,6 @@ arm_print_operand (FILE *stream, rtx x, 
+       }
+       return;
+ 
+-    case 'C':
+-      {
+-       rtx addr;
+-
+-       gcc_assert (GET_CODE (x) == MEM);
+-       addr = XEXP (x, 0);
+-       gcc_assert (GET_CODE (addr) == REG);
+-       asm_fprintf (stream, "[%r]", REGNO (addr));
+-      }
+-      return;
+-
+     /* Translate an S register number into a D register number and element index.  */
+     case 'y':
+       {
+@@ -22840,372 +22824,4 @@ arm_builtin_support_vector_misalignment 
+                                                      is_packed);
+ }
+ 
+-/* Legitimize a memory reference for sync primitive implemented using
+-   ldrex / strex.  We currently force the form of the reference to be
+-   indirect without offset.  We do not yet support the indirect offset
+-   addressing supported by some ARM targets for these
+-   instructions.  */
+-static rtx
+-arm_legitimize_sync_memory (rtx memory)
+-{
+-  rtx addr = force_reg (Pmode, XEXP (memory, 0));
+-  rtx legitimate_memory = gen_rtx_MEM (GET_MODE (memory), addr);
+-
+-  set_mem_alias_set (legitimate_memory, ALIAS_SET_MEMORY_BARRIER);
+-  MEM_VOLATILE_P (legitimate_memory) = MEM_VOLATILE_P (memory);
+-  return legitimate_memory;
+-}
+-
+-/* An instruction emitter. */
+-typedef void (* emit_f) (int label, const char *, rtx *);
+-
+-/* An instruction emitter that emits via the conventional
+-   output_asm_insn.  */
+-static void
+-arm_emit (int label ATTRIBUTE_UNUSED, const char *pattern, rtx *operands)
+-{
+-  output_asm_insn (pattern, operands);
+-}
+-
+-/* Count the number of emitted synchronization instructions.  */
+-static unsigned arm_insn_count;
+-
+-/* An emitter that counts emitted instructions but does not actually
+-   emit instruction into the the instruction stream.  */
+-static void
+-arm_count (int label,
+-          const char *pattern ATTRIBUTE_UNUSED,
+-          rtx *operands ATTRIBUTE_UNUSED)
+-{
+-  if (! label)
+-    ++ arm_insn_count;
+-}
+-
+-/* Construct a pattern using conventional output formatting and feed
+-   it to output_asm_insn.  Provides a mechanism to construct the
+-   output pattern on the fly.  Note the hard limit on the pattern
+-   buffer size.  */
+-static void
+-arm_output_asm_insn (emit_f emit, int label, rtx *operands,
+-                    const char *pattern, ...)
+-{
+-  va_list ap;
+-  char buffer[256];
+-
+-  va_start (ap, pattern);
+-  vsprintf (buffer, pattern, ap);
+-  va_end (ap);
+-  emit (label, buffer, operands);
+-}
+-
+-/* Emit the memory barrier instruction, if any, provided by this
+-   target to a specified emitter.  */
+-static void
+-arm_process_output_memory_barrier (emit_f emit, rtx *operands)
+-{
+-  if (TARGET_HAVE_DMB)
+-    {
+-      /* Note we issue a system level barrier. We should consider
+-         issuing a inner shareabilty zone barrier here instead, ie.
+-         "DMB ISH".  */
+-      emit (0, "dmb\tsy", operands);
+-      return;
+-    }
+-
+-  if (TARGET_HAVE_DMB_MCR)
+-    {
+-      emit (0, "mcr\tp15, 0, r0, c7, c10, 5", operands);
+-      return;
+-    }
+-
+-  gcc_unreachable ();
+-}
+-
+-/* Emit the memory barrier instruction, if any, provided by this
+-   target.  */
+-const char *
+-arm_output_memory_barrier (rtx *operands)
+-{
+-  arm_process_output_memory_barrier (arm_emit, operands);
+-  return "";
+-}
+-
+-/* Helper to figure out the instruction suffix required on ldrex/strex
+-   for operations on an object of the specified mode.  */
+-static const char *
+-arm_ldrex_suffix (enum machine_mode mode)
+-{
+-  switch (mode)
+-    {
+-    case QImode: return "b";
+-    case HImode: return "h";
+-    case SImode: return "";
+-    case DImode: return "d";
+-    default:
+-      gcc_unreachable ();
+-    }
+-  return "";
+-}
+-
+-/* Emit an ldrex{b,h,d, } instruction appropriate for the specified
+-   mode.  */
+-static void
+-arm_output_ldrex (emit_f emit,
+-                 enum machine_mode mode,
+-                 rtx target,
+-                 rtx memory)
+-{
+-  const char *suffix = arm_ldrex_suffix (mode);
+-  rtx operands[2];
+-
+-  operands[0] = target;
+-  operands[1] = memory;
+-  arm_output_asm_insn (emit, 0, operands, "ldrex%s\t%%0, %%C1", suffix);
+-}
+-
+-/* Emit a strex{b,h,d, } instruction appropriate for the specified
+-   mode.  */
+-static void
+-arm_output_strex (emit_f emit,
+-                 enum machine_mode mode,
+-                 const char *cc,
+-                 rtx result,
+-                 rtx value,
+-                 rtx memory)
+-{
+-  const char *suffix = arm_ldrex_suffix (mode);
+-  rtx operands[3];
+-
+-  operands[0] = result;
+-  operands[1] = value;
+-  operands[2] = memory;
+-  arm_output_asm_insn (emit, 0, operands, "strex%s%s\t%%0, %%1, %%C2", suffix,
+-                      cc);
+-}
+-
+-/* Helper to emit a two operand instruction.  */
+-static void
+-arm_output_op2 (emit_f emit, const char *mnemonic, rtx d, rtx s)
+-{
+-  rtx operands[2];
+-
+-  operands[0] = d;
+-  operands[1] = s;
+-  arm_output_asm_insn (emit, 0, operands, "%s\t%%0, %%1", mnemonic);
+-}
+-
+-/* Helper to emit a three operand instruction.  */
+-static void
+-arm_output_op3 (emit_f emit, const char *mnemonic, rtx d, rtx a, rtx b)
+-{
+-  rtx operands[3];
+-
+-  operands[0] = d;
+-  operands[1] = a;
+-  operands[2] = b;
+-  arm_output_asm_insn (emit, 0, operands, "%s\t%%0, %%1, %%2", mnemonic);
+-}
+-
+-/* Emit a load store exclusive synchronization loop.
+-
+-   do
+-     old_value = [mem]
+-     if old_value != required_value
+-       break;
+-     t1 = sync_op (old_value, new_value)
+-     [mem] = t1, t2 = [0|1]
+-   while ! t2
+-
+-   Note:
+-     t1 == t2 is not permitted
+-     t1 == old_value is permitted
+-
+-   required_value:
+-
+-   RTX register or const_int representing the required old_value for
+-   the modify to continue, if NULL no comparsion is performed.  */
+-static void
+-arm_output_sync_loop (emit_f emit,
+-                     enum machine_mode mode,
+-                     rtx old_value,
+-                     rtx memory,
+-                     rtx required_value,
+-                     rtx new_value,
+-                     rtx t1,
+-                     rtx t2,
+-                     enum attr_sync_op sync_op,
+-                     int early_barrier_required)
+-{
+-  rtx operands[1];
+-
+-  gcc_assert (t1 != t2);
+-
+-  if (early_barrier_required)
+-    arm_process_output_memory_barrier (emit, NULL);
+-
+-  arm_output_asm_insn (emit, 1, operands, "%sLSYT%%=:", LOCAL_LABEL_PREFIX);
+-
+-  arm_output_ldrex (emit, mode, old_value, memory);
+-
+-  if (required_value)
+-    {
+-      rtx operands[2];
+-
+-      operands[0] = old_value;
+-      operands[1] = required_value;
+-      arm_output_asm_insn (emit, 0, operands, "cmp\t%%0, %%1");
+-      arm_output_asm_insn (emit, 0, operands, "bne\t%sLSYB%%=", LOCAL_LABEL_PREFIX);
+-    }
+-
+-  switch (sync_op)
+-    {
+-    case SYNC_OP_ADD:
+-      arm_output_op3 (emit, "add", t1, old_value, new_value);
+-      break;
+-
+-    case SYNC_OP_SUB:
+-      arm_output_op3 (emit, "sub", t1, old_value, new_value);
+-      break;
+-
+-    case SYNC_OP_IOR:
+-      arm_output_op3 (emit, "orr", t1, old_value, new_value);
+-      break;
+-
+-    case SYNC_OP_XOR:
+-      arm_output_op3 (emit, "eor", t1, old_value, new_value);
+-      break;
+-
+-    case SYNC_OP_AND:
+-      arm_output_op3 (emit,"and", t1, old_value, new_value);
+-      break;
+-
+-    case SYNC_OP_NAND:
+-      arm_output_op3 (emit, "and", t1, old_value, new_value);
+-      arm_output_op2 (emit, "mvn", t1, t1);
+-      break;
+-
+-    case SYNC_OP_NONE:
+-      t1 = new_value;
+-      break;
+-    }
+-
+-  arm_output_strex (emit, mode, "", t2, t1, memory);
+-  operands[0] = t2;
+-  arm_output_asm_insn (emit, 0, operands, "teq\t%%0, #0");
+-  arm_output_asm_insn (emit, 0, operands, "bne\t%sLSYT%%=", LOCAL_LABEL_PREFIX);
+-
+-  arm_process_output_memory_barrier (emit, NULL);
+-  arm_output_asm_insn (emit, 1, operands, "%sLSYB%%=:", LOCAL_LABEL_PREFIX);
+-}
+-
+-static rtx
+-arm_get_sync_operand (rtx *operands, int index, rtx default_value)
+-{
+-  if (index > 0)
+-    default_value = operands[index - 1];
+-
+-  return default_value;
+-}
+-
+-#define FETCH_SYNC_OPERAND(NAME, DEFAULT) \
+-  arm_get_sync_operand (operands, (int) get_attr_sync_##NAME (insn), DEFAULT);
+-
+-/* Extract the operands for a synchroniztion instruction from the
+-   instructions attributes and emit the instruction.  */
+-static void
+-arm_process_output_sync_insn (emit_f emit, rtx insn, rtx *operands)
+-{
+-  rtx result, memory, required_value, new_value, t1, t2;
+-  int early_barrier;
+-  enum machine_mode mode;
+-  enum attr_sync_op sync_op;
+-
+-  result = FETCH_SYNC_OPERAND(result, 0);
+-  memory = FETCH_SYNC_OPERAND(memory, 0);
+-  required_value = FETCH_SYNC_OPERAND(required_value, 0);
+-  new_value = FETCH_SYNC_OPERAND(new_value, 0);
+-  t1 = FETCH_SYNC_OPERAND(t1, 0);
+-  t2 = FETCH_SYNC_OPERAND(t2, 0);
+-  early_barrier =
+-    get_attr_sync_release_barrier (insn) == SYNC_RELEASE_BARRIER_YES;
+-  sync_op = get_attr_sync_op (insn);
+-  mode = GET_MODE (memory);
+-
+-  arm_output_sync_loop (emit, mode, result, memory, required_value,
+-                       new_value, t1, t2, sync_op, early_barrier);
+-}
+-
+-/* Emit a synchronization instruction loop.  */
+-const char *
+-arm_output_sync_insn (rtx insn, rtx *operands)
+-{
+-  arm_process_output_sync_insn (arm_emit, insn, operands);
+-  return "";
+-}
+-
+-/* Count the number of machine instruction that will be emitted for a
+-   synchronization instruction.  Note that the emitter used does not
+-   emit instructions, it just counts instructions being carefull not
+-   to count labels.  */
+-unsigned int
+-arm_sync_loop_insns (rtx insn, rtx *operands)
+-{
+-  arm_insn_count = 0;
+-  arm_process_output_sync_insn (arm_count, insn, operands);
+-  return arm_insn_count;
+-}
+-
+-/* Helper to call a target sync instruction generator, dealing with
+-   the variation in operands required by the different generators.  */
+-static rtx
+-arm_call_generator (struct arm_sync_generator *generator, rtx old_value,
+-                   rtx memory, rtx required_value, rtx new_value)
+-{
+-  switch (generator->op)
+-    {
+-    case arm_sync_generator_omn:
+-      gcc_assert (! required_value);
+-      return generator->u.omn (old_value, memory, new_value);
+-
+-    case arm_sync_generator_omrn:
+-      gcc_assert (required_value);
+-      return generator->u.omrn (old_value, memory, required_value, new_value);
+-    }
+-
+-  return NULL;
+-}
+-
+-/* Expand a synchronization loop. The synchronization loop is expanded
+-   as an opaque block of instructions in order to ensure that we do
+-   not subsequently get extraneous memory accesses inserted within the
+-   critical region. The exclusive access property of ldrex/strex is
+-   only guaranteed in there are no intervening memory accesses. */
+-void
+-arm_expand_sync (enum machine_mode mode,
+-                struct arm_sync_generator *generator,
+-                rtx target, rtx memory, rtx required_value, rtx new_value)
+-{
+-  if (target == NULL)
+-    target = gen_reg_rtx (mode);
+-
+-  memory = arm_legitimize_sync_memory (memory);
+-  if (mode != SImode)
+-    {
+-      rtx load_temp = gen_reg_rtx (SImode);
+-
+-      if (required_value)
+-       required_value = convert_modes (SImode, mode, required_value, true);
+-
+-      new_value = convert_modes (SImode, mode, new_value, true);
+-      emit_insn (arm_call_generator (generator, load_temp, memory,
+-                                    required_value, new_value));
+-      emit_move_insn (target, gen_lowpart (mode, load_temp));
+-    }
+-  else
+-    {
+-      emit_insn (arm_call_generator (generator, target, memory, required_value,
+-                                    new_value));
+-    }
+-}
+-
+ #include "gt-arm.h"
+Index: gcc-4.5/gcc/config/arm/arm.h
+===================================================================
+--- gcc-4.5.orig/gcc/config/arm/arm.h
++++ gcc-4.5/gcc/config/arm/arm.h
+@@ -128,24 +128,6 @@ enum target_cpus
+ /* The processor for which instructions should be scheduled.  */
+ extern enum processor_type arm_tune;
+ 
+-enum arm_sync_generator_tag
+-  {
+-    arm_sync_generator_omn,
+-    arm_sync_generator_omrn
+-  };
+-
+-/* Wrapper to pass around a polymorphic pointer to a sync instruction
+-   generator and.  */
+-struct arm_sync_generator
+-{
+-  enum arm_sync_generator_tag op;
+-  union
+-  {
+-    rtx (* omn) (rtx, rtx, rtx);
+-    rtx (* omrn) (rtx, rtx, rtx, rtx);
+-  } u;
+-};
+-
+ typedef enum arm_cond_code
+ {
+   ARM_EQ = 0, ARM_NE, ARM_CS, ARM_CC, ARM_MI, ARM_PL, ARM_VS, ARM_VC,
+@@ -290,20 +272,6 @@ extern void (*arm_lang_output_object_att
+    for Thumb-2.  */
+ #define TARGET_UNIFIED_ASM TARGET_THUMB2
+ 
+-/* Nonzero if this chip provides the DMB instruction.  */
+-#define TARGET_HAVE_DMB                (arm_arch7)
+-
+-/* Nonzero if this chip implements a memory barrier via CP15.  */
+-#define TARGET_HAVE_DMB_MCR    (arm_arch6k && ! TARGET_HAVE_DMB)
+-
+-/* Nonzero if this chip implements a memory barrier instruction.  */
+-#define TARGET_HAVE_MEMORY_BARRIER (TARGET_HAVE_DMB || TARGET_HAVE_DMB_MCR)
+-
+-/* Nonzero if this chip supports ldrex and strex */
+-#define TARGET_HAVE_LDREX      ((arm_arch6 && TARGET_ARM) || arm_arch7)
+-
+-/* Nonzero if this chip supports ldrex{bhd} and strex{bhd}.  */
+-#define TARGET_HAVE_LDREXBHD   ((arm_arch6k && TARGET_ARM) || arm_arch7)
+ 
+ /* True iff the full BPABI is being used.  If TARGET_BPABI is true,
+    then TARGET_AAPCS_BASED must be true -- but the converse does not
+@@ -437,12 +405,6 @@ extern int arm_arch5e;
+ /* Nonzero if this chip supports the ARM Architecture 6 extensions.  */
+ extern int arm_arch6;
+ 
+-/* Nonzero if this chip supports the ARM Architecture 6k extensions.  */
+-extern int arm_arch6k;
+-
+-/* Nonzero if this chip supports the ARM Architecture 7 extensions.  */
+-extern int arm_arch7;
+-
+ /* Nonzero if instructions not present in the 'M' profile can be used.  */
+ extern int arm_arch_notm;
+ 
+Index: gcc-4.5/gcc/config/arm/arm.md
+===================================================================
+--- gcc-4.5.orig/gcc/config/arm/arm.md
++++ gcc-4.5/gcc/config/arm/arm.md
+@@ -103,7 +103,6 @@
+    (UNSPEC_RBIT 26)       ; rbit operation.
+    (UNSPEC_SYMBOL_OFFSET 27) ; The offset of the start of the symbol from
+                              ; another symbolic address.
+-   (UNSPEC_MEMORY_BARRIER 28) ; Represent a memory barrier.
+   ]
+ )
+ 
+@@ -140,11 +139,6 @@
+    (VUNSPEC_ALIGN32  16) ; Used to force 32-byte alignment.
+    (VUNSPEC_EH_RETURN 20); Use to override the return address for exception
+                         ; handling.
+-   (VUNSPEC_SYNC_COMPARE_AND_SWAP 21)  ; Represent an atomic compare swap.
+-   (VUNSPEC_SYNC_LOCK             22)  ; Represent a sync_lock_test_and_set.
+-   (VUNSPEC_SYNC_OP               23)  ; Represent a sync_<op>
+-   (VUNSPEC_SYNC_NEW_OP           24)  ; Represent a sync_new_<op>
+-   (VUNSPEC_SYNC_OLD_OP           25)  ; Represent a sync_old_<op>
+   ]
+ )
+ 
+@@ -169,21 +163,8 @@
+ (define_attr "fpu" "none,fpa,fpe2,fpe3,maverick,vfp"
+   (const (symbol_ref "arm_fpu_attr")))
+ 
+-(define_attr "sync_result"          "none,0,1,2,3,4,5" (const_string "none"))
+-(define_attr "sync_memory"          "none,0,1,2,3,4,5" (const_string "none"))
+-(define_attr "sync_required_value"  "none,0,1,2,3,4,5" (const_string "none"))
+-(define_attr "sync_new_value"       "none,0,1,2,3,4,5" (const_string "none"))
+-(define_attr "sync_t1"              "none,0,1,2,3,4,5" (const_string "none"))
+-(define_attr "sync_t2"              "none,0,1,2,3,4,5" (const_string "none"))
+-(define_attr "sync_release_barrier" "yes,no"           (const_string "yes"))
+-(define_attr "sync_op"              "none,add,sub,ior,xor,and,nand"
+-                                    (const_string "none"))
+-
+ ; LENGTH of an instruction (in bytes)
+-(define_attr "length" ""
+-  (cond [(not (eq_attr "sync_memory" "none"))
+-          (symbol_ref "arm_sync_loop_insns (insn, operands) * 4")
+-       ] (const_int 4)))
++(define_attr "length" "" (const_int 4))
+ 
+ ; POOL_RANGE is how far away from a constant pool entry that this insn
+ ; can be placed.  If the distance is zero, then this insn will never
+@@ -11568,5 +11549,4 @@
+ (include "thumb2.md")
+ ;; Neon patterns
+ (include "neon.md")
+-;; Synchronization Primitives
+-(include "sync.md")
++
+Index: gcc-4.5/gcc/config/arm/predicates.md
+===================================================================
+--- gcc-4.5.orig/gcc/config/arm/predicates.md
++++ gcc-4.5/gcc/config/arm/predicates.md
+@@ -573,11 +573,6 @@
+                (and (match_test "TARGET_32BIT")
+                     (match_operand 0 "arm_di_operand"))))
+ 
+-;; True if the operand is memory reference suitable for a ldrex/strex.
+-(define_predicate "arm_sync_memory_operand"
+-  (and (match_operand 0 "memory_operand")
+-       (match_code "reg" "0")))
+-
+ ;; Predicates for parallel expanders based on mode.
+ (define_special_predicate "vect_par_constant_high" 
+   (match_code "parallel")