Index: gimple.h
===================================================================
--- gimple.h	(revision 160447)
+++ gimple.h	(working copy)
@@ -244,7 +244,9 @@ bb_seq (const_basic_block bb)
 static inline void
 set_bb_seq (basic_block bb, gimple_seq seq)
 {
+#ifdef ENABLE_CHECKING
   gcc_assert (!(bb->flags & BB_RTL));
+#endif
   bb->il.gimple->seq = seq;
 }
 
@@ -1326,7 +1328,9 @@ gimple_def_ops (const_gimple g)
 static inline void
 gimple_set_def_ops (gimple g, struct def_optype_d *def)
 {
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (gimple_has_ops (g));
+#endif
   g->gsops.opbase.def_ops = def;
 }
 
@@ -1347,7 +1351,9 @@ gimple_use_ops (const_gimple g)
 static inline void
 gimple_set_use_ops (gimple g, struct use_optype_d *use)
 {
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (gimple_has_ops (g));
+#endif
   g->gsops.opbase.use_ops = use;
 }
 
@@ -1428,7 +1434,9 @@ gimple_vdef_ptr (gimple g)
 static inline void
 gimple_set_vuse (gimple g, tree vuse)
 {
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (gimple_has_mem_ops (g));
+#endif
   g->gsmembase.vuse = vuse;
 }
 
@@ -1437,7 +1445,9 @@ gimple_set_vuse (gimple g, tree vuse)
 static inline void
 gimple_set_vdef (gimple g, tree vdef)
 {
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (gimple_has_mem_ops (g));
+#endif
   g->gsmembase.vdef = vdef;
 }
 
@@ -1528,8 +1538,10 @@ gimple_references_memory_p (gimple stmt)
 static inline unsigned
 gimple_omp_subcode (const_gimple s)
 {
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (gimple_code (s) >= GIMPLE_OMP_ATOMIC_LOAD
 	      && gimple_code (s) <= GIMPLE_OMP_SINGLE);
+#endif
   return s->gsbase.subcode;
 }
 
@@ -1540,7 +1552,9 @@ gimple_omp_set_subcode (gimple s, unsign
 {
   /* We only have 16 bits for the subcode.  Assert that we are not
      overflowing it.  */
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (subcode < (1 << 16));
+#ENDif
   s->gsbase.subcode = subcode;
 }
 
@@ -1640,7 +1654,9 @@ gimple_ops (gimple gs)
      of the structure.  Note that those structures that do not
      have an operand vector have a zero offset.  */
   off = gimple_ops_offset_[gimple_statement_structure (gs)];
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (off != 0);
+#endif
 
   return (tree *) ((char *) gs + off);
 }
@@ -1653,7 +1669,7 @@ gimple_op (const_gimple gs, unsigned i)
 {
   if (gimple_has_ops (gs))
     {
-#ifdef ENABLE_CHECKING
+#ifdef ENABLE_GIMPLE_CHECKING
       gcc_assert (i < gimple_num_ops (gs));
 #endif
       return gimple_ops (CONST_CAST_GIMPLE (gs))[i];
@@ -1669,7 +1685,7 @@ gimple_op_ptr (const_gimple gs, unsigned
 {
   if (gimple_has_ops (gs))
     {
-#ifdef ENABLE_CHECKING
+#ifdef ENABLE_GIMPLE_CHECKING
       gcc_assert (i < gimple_num_ops (gs));
 #endif
       return gimple_ops (CONST_CAST_GIMPLE (gs)) + i;
@@ -1683,7 +1699,9 @@ gimple_op_ptr (const_gimple gs, unsigned
 static inline void
 gimple_set_op (gimple gs, unsigned i, tree op)
 {
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (gimple_has_ops (gs) && i < gimple_num_ops (gs));
+#endif
 
   /* Note.  It may be tempting to assert that OP matches
      is_gimple_operand, but that would be wrong.  Different tuples
@@ -2626,7 +2644,9 @@ static inline void
 gimple_bind_set_block (gimple gs, tree block)
 {
   GIMPLE_CHECK (gs, GIMPLE_BIND);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (block == NULL_TREE || TREE_CODE (block) == BLOCK);
+#endif
   gs->gimple_bind.block = block;
 }
 
@@ -2675,7 +2695,9 @@ static inline tree
 gimple_asm_input_op (const_gimple gs, unsigned index)
 {
   GIMPLE_CHECK (gs, GIMPLE_ASM);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_asm.ni);
+#endif
   return gimple_op (gs, index);
 }
 
@@ -2685,7 +2707,9 @@ static inline tree *
 gimple_asm_input_op_ptr (const_gimple gs, unsigned index)
 {
   GIMPLE_CHECK (gs, GIMPLE_ASM);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_asm.ni);
+#endif
   return gimple_op_ptr (gs, index);
 }
 
@@ -2696,8 +2720,10 @@ static inline void
 gimple_asm_set_input_op (gimple gs, unsigned index, tree in_op)
 {
   GIMPLE_CHECK (gs, GIMPLE_ASM);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_asm.ni);
   gcc_assert (TREE_CODE (in_op) == TREE_LIST);
+#endif
   gimple_set_op (gs, index, in_op);
 }
 
@@ -2708,7 +2734,9 @@ static inline tree
 gimple_asm_output_op (const_gimple gs, unsigned index)
 {
   GIMPLE_CHECK (gs, GIMPLE_ASM);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_asm.no);
+#endif
   return gimple_op (gs, index + gs->gimple_asm.ni);
 }
 
@@ -2718,7 +2746,9 @@ static inline tree *
 gimple_asm_output_op_ptr (const_gimple gs, unsigned index)
 {
   GIMPLE_CHECK (gs, GIMPLE_ASM);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_asm.no);
+#endif
   return gimple_op_ptr (gs, index + gs->gimple_asm.ni);
 }
 
@@ -2729,8 +2759,10 @@ static inline void
 gimple_asm_set_output_op (gimple gs, unsigned index, tree out_op)
 {
   GIMPLE_CHECK (gs, GIMPLE_ASM);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_asm.no);
   gcc_assert (TREE_CODE (out_op) == TREE_LIST);
+#endif
   gimple_set_op (gs, index + gs->gimple_asm.ni, out_op);
 }
 
@@ -2741,7 +2773,9 @@ static inline tree
 gimple_asm_clobber_op (const_gimple gs, unsigned index)
 {
   GIMPLE_CHECK (gs, GIMPLE_ASM);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_asm.nc);
+#endif
   return gimple_op (gs, index + gs->gimple_asm.ni + gs->gimple_asm.no);
 }
 
@@ -2752,8 +2786,10 @@ static inline void
 gimple_asm_set_clobber_op (gimple gs, unsigned index, tree clobber_op)
 {
   GIMPLE_CHECK (gs, GIMPLE_ASM);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_asm.nc);
   gcc_assert (TREE_CODE (clobber_op) == TREE_LIST);
+#endif
   gimple_set_op (gs, index + gs->gimple_asm.ni + gs->gimple_asm.no, clobber_op);
 }
 
@@ -2763,7 +2799,9 @@ static inline tree
 gimple_asm_label_op (const_gimple gs, unsigned index)
 {
   GIMPLE_CHECK (gs, GIMPLE_ASM);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_asm.nl);
+#endif
   return gimple_op (gs, index + gs->gimple_asm.ni + gs->gimple_asm.nc);
 }
 
@@ -2773,8 +2811,10 @@ static inline void
 gimple_asm_set_label_op (gimple gs, unsigned index, tree label_op)
 {
   GIMPLE_CHECK (gs, GIMPLE_ASM);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_asm.nl);
   gcc_assert (TREE_CODE (label_op) == TREE_LIST);
+#endif
   gimple_set_op (gs, index + gs->gimple_asm.ni + gs->gimple_asm.nc, label_op);
 }
 
@@ -2987,7 +3027,9 @@ static inline void
 gimple_try_set_kind (gimple gs, enum gimple_try_flags kind)
 {
   GIMPLE_CHECK (gs, GIMPLE_TRY);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (kind == GIMPLE_TRY_CATCH || kind == GIMPLE_TRY_FINALLY);
+#endif
   if (gimple_try_kind (gs) != kind)
     gs->gsbase.subcode = (unsigned int) kind;
 }
@@ -2998,7 +3040,9 @@ gimple_try_set_kind (gimple gs, enum gim
 static inline bool
 gimple_try_catch_is_cleanup (const_gimple gs)
 {
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (gimple_try_kind (gs) == GIMPLE_TRY_CATCH);
+#endif
   return (gs->gsbase.subcode & GIMPLE_TRY_CATCH_IS_CLEANUP) != 0;
 }
 
@@ -3029,7 +3073,9 @@ gimple_try_cleanup (gimple gs)
 static inline void
 gimple_try_set_catch_is_cleanup (gimple g, bool catch_is_cleanup)
 {
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (gimple_try_kind (g) == GIMPLE_TRY_CATCH);
+#endif
   if (catch_is_cleanup)
     g->gsbase.subcode |= GIMPLE_TRY_CATCH_IS_CLEANUP;
   else
@@ -3156,7 +3202,9 @@ static inline struct phi_arg_d *
 gimple_phi_arg (gimple gs, unsigned index)
 {
   GIMPLE_CHECK (gs, GIMPLE_PHI);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_phi.capacity);
+#endif
   return &(gs->gimple_phi.args[index]);
 }
 
@@ -3167,8 +3215,10 @@ static inline void
 gimple_phi_set_arg (gimple gs, unsigned index, struct phi_arg_d * phiarg)
 {
   GIMPLE_CHECK (gs, GIMPLE_PHI);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (index <= gs->gimple_phi.nargs);
-  memcpy (gs->gimple_phi.args + index, phiarg, sizeof (struct phi_arg_d));
+#endif
+  gs->gimple_phi.args[index] = *phiarg;
 }
 
 /* Return the region number for GIMPLE_RESX GS.  */
@@ -3215,7 +3265,9 @@ gimple_switch_num_labels (const_gimple g
   unsigned num_ops;
   GIMPLE_CHECK (gs, GIMPLE_SWITCH);
   num_ops = gimple_num_ops (gs);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (num_ops > 1);
+#endif
   return num_ops - 1;
 }
 
@@ -3256,7 +3308,9 @@ static inline void
 gimple_switch_set_index (gimple gs, tree index)
 {
   GIMPLE_CHECK (gs, GIMPLE_SWITCH);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (SSA_VAR_P (index) || CONSTANT_CLASS_P (index));
+#endif
   gimple_set_op (gs, 0, index);
 }
 
@@ -3268,7 +3322,9 @@ static inline tree
 gimple_switch_label (const_gimple gs, unsigned index)
 {
   GIMPLE_CHECK (gs, GIMPLE_SWITCH);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (gimple_num_ops (gs) > index + 1);
+#endif
   return gimple_op (gs, index + 1);
 }
 
@@ -3278,8 +3334,10 @@ static inline void
 gimple_switch_set_label (gimple gs, unsigned index, tree label)
 {
   GIMPLE_CHECK (gs, GIMPLE_SWITCH);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (gimple_num_ops (gs) > index + 1);
   gcc_assert (label == NULL_TREE || TREE_CODE (label) == CASE_LABEL_EXPR);
+#endif
   gimple_set_op (gs, index + 1, label);
 }
 
@@ -3506,7 +3564,9 @@ static inline tree
 gimple_omp_for_index (const_gimple gs, size_t i)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   return gs->gimple_omp_for.iter[i].index;
 }
 
@@ -3517,7 +3577,9 @@ static inline tree *
 gimple_omp_for_index_ptr (gimple gs, size_t i)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   return &gs->gimple_omp_for.iter[i].index;
 }
 
@@ -3528,7 +3590,9 @@ static inline void
 gimple_omp_for_set_index (gimple gs, size_t i, tree index)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   gs->gimple_omp_for.iter[i].index = index;
 }
 
@@ -3539,7 +3603,9 @@ static inline tree
 gimple_omp_for_initial (const_gimple gs, size_t i)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   return gs->gimple_omp_for.iter[i].initial;
 }
 
@@ -3550,7 +3616,9 @@ static inline tree *
 gimple_omp_for_initial_ptr (gimple gs, size_t i)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   return &gs->gimple_omp_for.iter[i].initial;
 }
 
@@ -3561,7 +3629,9 @@ static inline void
 gimple_omp_for_set_initial (gimple gs, size_t i, tree initial)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   gs->gimple_omp_for.iter[i].initial = initial;
 }
 
@@ -3572,7 +3642,9 @@ static inline tree
 gimple_omp_for_final (const_gimple gs, size_t i)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   return gs->gimple_omp_for.iter[i].final;
 }
 
@@ -3583,7 +3655,9 @@ static inline tree *
 gimple_omp_for_final_ptr (gimple gs, size_t i)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   return &gs->gimple_omp_for.iter[i].final;
 }
 
@@ -3594,7 +3668,9 @@ static inline void
 gimple_omp_for_set_final (gimple gs, size_t i, tree final)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   gs->gimple_omp_for.iter[i].final = final;
 }
 
@@ -3605,7 +3681,9 @@ static inline tree
 gimple_omp_for_incr (const_gimple gs, size_t i)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   return gs->gimple_omp_for.iter[i].incr;
 }
 
@@ -3616,7 +3694,9 @@ static inline tree *
 gimple_omp_for_incr_ptr (gimple gs, size_t i)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   return &gs->gimple_omp_for.iter[i].incr;
 }
 
@@ -3627,7 +3707,9 @@ static inline void
 gimple_omp_for_set_incr (gimple gs, size_t i, tree incr)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   gs->gimple_omp_for.iter[i].incr = incr;
 }
 
@@ -4129,8 +4211,10 @@ static inline void
 gimple_omp_for_set_cond (gimple gs, size_t i, enum tree_code cond)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (TREE_CODE_CLASS (cond) == tcc_comparison);
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   gs->gimple_omp_for.iter[i].cond = cond;
 }
 
@@ -4141,7 +4225,9 @@ static inline enum tree_code
 gimple_omp_for_cond (const_gimple gs, size_t i)
 {
   GIMPLE_CHECK (gs, GIMPLE_OMP_FOR);
+#ifdef ENABLE_GIMPLE_CHECKING
   gcc_assert (i < gs->gimple_omp_for.collapse);
+#endif
   return gs->gimple_omp_for.iter[i].cond;
 }