/* Definitions for code generation pass of GNU compiler.
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
This file is part of GCC.
For example, add_optab applies to addition.
- The insn_code slot is the enum insn_code that says how to
- generate an insn for this operation on a particular machine mode.
- It is CODE_FOR_nothing if there is no such insn on the target machine.
-
The `lib_call' slot is the name of the library function that
can be used to perform the operation.
- A few optabs, such as move_optab and cmp_optab, are used
- by special code. */
+ A few optabs, such as move_optab, are used by special code. */
struct optab_handlers
{
- enum insn_code insn_code;
+ /* I - CODE_FOR_nothing, where I is either the insn code of the
+ associated insn generator or CODE_FOR_nothing if there is no such
+ insn on the target machine. */
+ int insn_code;
};
-struct optab
+struct optab_d
{
enum rtx_code code;
- const char *libcall_basename;
char libcall_suffix;
- void (*libcall_gen)(struct optab *, const char *name, char suffix, enum machine_mode);
+ const char *libcall_basename;
+ void (*libcall_gen)(struct optab_d *, const char *name, char suffix,
+ enum machine_mode);
struct optab_handlers handlers[NUM_MACHINE_MODES];
};
-typedef struct optab * optab;
+typedef struct optab_d * optab;
/* A convert_optab is for some sort of conversion operation between
modes. The first array index is the destination mode, the second
is the source mode. */
-struct convert_optab
+struct convert_optab_d
{
enum rtx_code code;
const char *libcall_basename;
- void (*libcall_gen)(struct convert_optab *, const char *name,
+ void (*libcall_gen)(struct convert_optab_d *, const char *name,
enum machine_mode,
enum machine_mode);
struct optab_handlers handlers[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
};
-typedef struct convert_optab *convert_optab;
+typedef struct convert_optab_d *convert_optab;
/* Given an enum insn_code, access the function to construct
the body of that kind of insn. */
wider than the multiplicand and multiplier.
All involved operations are saturating. */
OTI_ssmadd_widen,
- /* Unigned multiply and add with the result and addend one machine mode
+ /* Unsigned multiply and add with the result and addend one machine mode
wider than the multiplicand and multiplier.
All involved operations are saturating. */
OTI_usmadd_widen,
wider than the multiplicand and multiplier.
All involved operations are saturating. */
OTI_ssmsub_widen,
- /* Unigned multiply and subtract the result and minuend one machine mode
+ /* Unsigned multiply and subtract the result and minuend one machine mode
wider than the multiplicand and multiplier.
All involved operations are saturating. */
OTI_usmsub_widen,
OTI_pow,
/* Arc tangent of y/x */
OTI_atan2,
+ /* Floating multiply/add */
+ OTI_fma,
+ OTI_fms,
+ OTI_fnma,
+ OTI_fnms,
/* Move instruction. */
OTI_mov,
OTI_ldexp,
/* Multiply floating-point number by integral power of radix */
OTI_scalb,
+ /* Mantissa of a floating-point number */
+ OTI_significand,
/* Radix-independent exponent */
OTI_logb,
OTI_ilogb,
/* Test for infinite value */
OTI_isinf,
- /* Compare insn; two operands. */
+ /* Compare insn; two operands. Used only for libcalls. */
OTI_cmp,
- /* Used only for libcalls for unsigned comparisons. */
OTI_ucmp,
- /* tst insn; compare one operand against 0 */
- OTI_tst,
/* Floating point comparison optabs - used primarily for libfuncs */
OTI_eq,
/* String length */
OTI_strlen,
- /* Combined compare & jump/store flags/move operations. */
+ /* Combined compare & jump/move/store flags/trap operations. */
OTI_cbranch,
OTI_cmov,
OTI_cstore,
+ OTI_ctrap,
/* Push instruction. */
OTI_push,
OTI_vec_shr,
/* Extract specified elements from vectors, for vector load. */
OTI_vec_realign_load,
- /* Widening multiplication.
+ /* Widening multiplication.
The high/low part of the resulting vector of products is returned. */
OTI_vec_widen_umult_hi,
OTI_vec_widen_umult_lo,
OTI_MAX
};
-extern struct optab optab_table[OTI_MAX];
-
#define ssadd_optab (&optab_table[OTI_ssadd])
#define usadd_optab (&optab_table[OTI_usadd])
#define sssub_optab (&optab_table[OTI_sssub])
#define umax_optab (&optab_table[OTI_umax])
#define pow_optab (&optab_table[OTI_pow])
#define atan2_optab (&optab_table[OTI_atan2])
+#define fma_optab (&optab_table[OTI_fma])
+#define fms_optab (&optab_table[OTI_fms])
+#define fnma_optab (&optab_table[OTI_fnma])
+#define fnms_optab (&optab_table[OTI_fnms])
#define mov_optab (&optab_table[OTI_mov])
#define movstrict_optab (&optab_table[OTI_movstrict])
#define expm1_optab (&optab_table[OTI_expm1])
#define ldexp_optab (&optab_table[OTI_ldexp])
#define scalb_optab (&optab_table[OTI_scalb])
+#define significand_optab (&optab_table[OTI_significand])
#define logb_optab (&optab_table[OTI_logb])
#define ilogb_optab (&optab_table[OTI_ilogb])
#define log_optab (&optab_table[OTI_log])
#define cmp_optab (&optab_table[OTI_cmp])
#define ucmp_optab (&optab_table[OTI_ucmp])
-#define tst_optab (&optab_table[OTI_tst])
#define eq_optab (&optab_table[OTI_eq])
#define ne_optab (&optab_table[OTI_ne])
#define cbranch_optab (&optab_table[OTI_cbranch])
#define cmov_optab (&optab_table[OTI_cmov])
#define cstore_optab (&optab_table[OTI_cstore])
+#define ctrap_optab (&optab_table[OTI_ctrap])
+
#define push_optab (&optab_table[OTI_push])
#define addcc_optab (&optab_table[OTI_addcc])
COI_MAX
};
-extern struct convert_optab convert_optab_table[COI_MAX];
-
#define sext_optab (&convert_optab_table[COI_sext])
#define zext_optab (&convert_optab_table[COI_zext])
#define trunc_optab (&convert_optab_table[COI_trunc])
#define satfract_optab (&convert_optab_table[COI_satfract])
#define satfractuns_optab (&convert_optab_table[COI_satfractuns])
-/* These arrays record the insn_code of insns that may be needed to
- perform input and output reloads of special objects. They provide a
- place to pass a scratch register. */
-extern enum insn_code reload_in_optab[NUM_MACHINE_MODES];
-extern enum insn_code reload_out_optab[NUM_MACHINE_MODES];
-
/* Contains the optab used for each rtx code. */
extern optab code_to_optab[NUM_RTX_CODE + 1];
\f
typedef rtx (*rtxfun) (rtx);
-/* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
- gives the gen_function to make a branch to test that condition. */
-
-extern rtxfun bcc_gen_fctn[NUM_RTX_CODE];
+/* Enumerates operations that have a named .md pattern associated
+ with them, but which are not implemented as library functions. */
+enum direct_optab_index
+{
+#ifdef HAVE_conditional_move
+ /* Conditional move operations. */
+ DOI_movcc,
+#endif
-/* Indexed by the rtx-code for a conditional (e.g. EQ, LT,...)
- gives the insn code to make a store-condition insn
- to test that condition. */
+ /* Operations that use a scratch register to perform input and output
+ reloads of special objects. */
+ DOI_reload_in,
+ DOI_reload_out,
+
+ /* Vector conditional operations. */
+ DOI_vcond,
+ DOI_vcondu,
+
+ /* Block move operation. */
+ DOI_movmem,
+
+ /* Block set operation. */
+ DOI_setmem,
+
+ /* Various types of block compare operation. */
+ DOI_cmpstr,
+ DOI_cmpstrn,
+ DOI_cmpmem,
+
+ /* Synchronization primitives. This first set is atomic operation for
+ which we don't care about the resulting value. */
+ DOI_sync_add,
+ DOI_sync_sub,
+ DOI_sync_ior,
+ DOI_sync_and,
+ DOI_sync_xor,
+ DOI_sync_nand,
+
+ /* This second set is atomic operations in which we return the value
+ that existed in memory before the operation. */
+ DOI_sync_old_add,
+ DOI_sync_old_sub,
+ DOI_sync_old_ior,
+ DOI_sync_old_and,
+ DOI_sync_old_xor,
+ DOI_sync_old_nand,
+
+ /* This third set is atomic operations in which we return the value
+ that resulted after performing the operation. */
+ DOI_sync_new_add,
+ DOI_sync_new_sub,
+ DOI_sync_new_ior,
+ DOI_sync_new_and,
+ DOI_sync_new_xor,
+ DOI_sync_new_nand,
+
+ /* Atomic compare and swap. */
+ DOI_sync_compare_and_swap,
+
+ /* Atomic exchange with acquire semantics. */
+ DOI_sync_lock_test_and_set,
+
+ /* Atomic clear with release semantics. */
+ DOI_sync_lock_release,
+
+ DOI_MAX
+};
-extern enum insn_code setcc_gen_code[NUM_RTX_CODE];
+/* A structure that says which insn should be used to perform an operation
+ in a particular mode. */
+struct direct_optab_d
+{
+ struct optab_handlers handlers[NUM_MACHINE_MODES];
+};
+typedef struct direct_optab_d *direct_optab;
#ifdef HAVE_conditional_move
-/* Indexed by the machine mode, gives the insn code to make a conditional
- move insn. */
-
-extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
+#define movcc_optab (&direct_optab_table[(int) DOI_movcc])
#endif
+#define reload_in_optab (&direct_optab_table[(int) DOI_reload_in])
+#define reload_out_optab (&direct_optab_table[(int) DOI_reload_out])
+#define vcond_optab (&direct_optab_table[(int) DOI_vcond])
+#define vcondu_optab (&direct_optab_table[(int) DOI_vcondu])
+#define movmem_optab (&direct_optab_table[(int) DOI_movmem])
+#define setmem_optab (&direct_optab_table[(int) DOI_setmem])
+#define cmpstr_optab (&direct_optab_table[(int) DOI_cmpstr])
+#define cmpstrn_optab (&direct_optab_table[(int) DOI_cmpstrn])
+#define cmpmem_optab (&direct_optab_table[(int) DOI_cmpmem])
+#define sync_add_optab (&direct_optab_table[(int) DOI_sync_add])
+#define sync_sub_optab (&direct_optab_table[(int) DOI_sync_sub])
+#define sync_ior_optab (&direct_optab_table[(int) DOI_sync_ior])
+#define sync_and_optab (&direct_optab_table[(int) DOI_sync_and])
+#define sync_xor_optab (&direct_optab_table[(int) DOI_sync_xor])
+#define sync_nand_optab (&direct_optab_table[(int) DOI_sync_nand])
+#define sync_old_add_optab (&direct_optab_table[(int) DOI_sync_old_add])
+#define sync_old_sub_optab (&direct_optab_table[(int) DOI_sync_old_sub])
+#define sync_old_ior_optab (&direct_optab_table[(int) DOI_sync_old_ior])
+#define sync_old_and_optab (&direct_optab_table[(int) DOI_sync_old_and])
+#define sync_old_xor_optab (&direct_optab_table[(int) DOI_sync_old_xor])
+#define sync_old_nand_optab (&direct_optab_table[(int) DOI_sync_old_nand])
+#define sync_new_add_optab (&direct_optab_table[(int) DOI_sync_new_add])
+#define sync_new_sub_optab (&direct_optab_table[(int) DOI_sync_new_sub])
+#define sync_new_ior_optab (&direct_optab_table[(int) DOI_sync_new_ior])
+#define sync_new_and_optab (&direct_optab_table[(int) DOI_sync_new_and])
+#define sync_new_xor_optab (&direct_optab_table[(int) DOI_sync_new_xor])
+#define sync_new_nand_optab (&direct_optab_table[(int) DOI_sync_new_nand])
+#define sync_compare_and_swap_optab \
+ (&direct_optab_table[(int) DOI_sync_compare_and_swap])
+#define sync_lock_test_and_set_optab \
+ (&direct_optab_table[(int) DOI_sync_lock_test_and_set])
+#define sync_lock_release_optab \
+ (&direct_optab_table[(int) DOI_sync_lock_release])
+\f
+/* Target-dependent globals. */
+struct target_optabs {
+ /* Tables of patterns that may have an associated libcall. */
+ struct optab_d x_optab_table[(int) OTI_MAX];
+
+ /* Tables of patterns for converting one mode to another. */
+ struct convert_optab_d x_convert_optab_table[(int) COI_MAX];
-/* Indexed by the machine mode, gives the insn code for vector conditional
- operation. */
-
-extern enum insn_code vcond_gen_code[NUM_MACHINE_MODES];
-extern enum insn_code vcondu_gen_code[NUM_MACHINE_MODES];
-
-/* This array records the insn_code of insns to perform block moves. */
-extern enum insn_code movmem_optab[NUM_MACHINE_MODES];
-
-/* This array records the insn_code of insns to perform block sets. */
-extern enum insn_code setmem_optab[NUM_MACHINE_MODES];
-
-/* These arrays record the insn_code of two different kinds of insns
- to perform block compares. */
-extern enum insn_code cmpstr_optab[NUM_MACHINE_MODES];
-extern enum insn_code cmpstrn_optab[NUM_MACHINE_MODES];
-extern enum insn_code cmpmem_optab[NUM_MACHINE_MODES];
-
-/* Synchronization primitives. This first set is atomic operation for
- which we don't care about the resulting value. */
-extern enum insn_code sync_add_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_sub_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_ior_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_and_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_xor_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_nand_optab[NUM_MACHINE_MODES];
-
-/* This second set is atomic operations in which we return the value
- that existed in memory before the operation. */
-extern enum insn_code sync_old_add_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_old_sub_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_old_ior_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_old_and_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_old_xor_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_old_nand_optab[NUM_MACHINE_MODES];
-
-/* This third set is atomic operations in which we return the value
- that resulted after performing the operation. */
-extern enum insn_code sync_new_add_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_new_sub_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_new_ior_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_new_and_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_new_xor_optab[NUM_MACHINE_MODES];
-extern enum insn_code sync_new_nand_optab[NUM_MACHINE_MODES];
-
-/* Atomic compare and swap. */
-extern enum insn_code sync_compare_and_swap[NUM_MACHINE_MODES];
-extern enum insn_code sync_compare_and_swap_cc[NUM_MACHINE_MODES];
-
-/* Atomic exchange with acquire semantics. */
-extern enum insn_code sync_lock_test_and_set[NUM_MACHINE_MODES];
-
-/* Atomic clear with release semantics. */
-extern enum insn_code sync_lock_release[NUM_MACHINE_MODES];
+ /* Tables of patterns for direct optabs (i.e. those which cannot be
+ implemented using a libcall). */
+ struct direct_optab_d x_direct_optab_table[(int) DOI_MAX];
+};
+
+extern struct target_optabs default_target_optabs;
+#if SWITCHABLE_TARGET
+extern struct target_optabs *this_target_optabs;
+#else
+#define this_target_optabs (&default_target_optabs)
+#endif
+#define optab_table \
+ (this_target_optabs->x_optab_table)
+#define convert_optab_table \
+ (this_target_optabs->x_convert_optab_table)
+#define direct_optab_table \
+ (this_target_optabs->x_direct_optab_table)
+\f
/* Define functions given in optabs.c. */
-extern rtx expand_widen_pattern_expr (tree exp, rtx op0, rtx op1, rtx wide_op,
+extern rtx expand_widen_pattern_expr (sepops ops, rtx op0, rtx op1, rtx wide_op,
rtx target, int unsignedp);
extern rtx expand_ternary_op (enum machine_mode mode, optab ternary_optab,
extern rtx expand_abs_nojump (enum machine_mode, rtx, rtx, int);
extern rtx expand_abs (enum machine_mode, rtx, rtx, int, int);
+/* Expand the one's complement absolute value operation. */
+extern rtx expand_one_cmpl_abs_nojump (enum machine_mode, rtx, rtx);
+
/* Expand the copysign operation. */
extern rtx expand_copysign (rtx, rtx, rtx);
/* Generate an instruction with a given INSN_CODE with an output and
an input. */
extern void emit_unop_insn (int, rtx, rtx, enum rtx_code);
-
-/* Emit one rtl insn to compare two rtx's. */
-extern void emit_cmp_insn (rtx, rtx, enum rtx_code, rtx, enum machine_mode,
- int);
+extern bool maybe_emit_unop_insn (int, rtx, rtx, enum rtx_code);
/* An extra flag to control optab_for_tree_code's behavior. This is needed to
distinguish between machines with a vector shift that takes a scalar for the
/* Generate code for float to integral conversion. */
extern bool expand_sfix_optab (rtx, rtx, convert_optab);
+/* Generate code for a widening multiply. */
+extern rtx expand_widening_mult (enum machine_mode, rtx, rtx, rtx, int, optab);
+
/* Return tree if target supports vector operations for COND_EXPR. */
bool expand_vec_cond_expr_p (tree, enum machine_mode);
/* Generate code for VEC_COND_EXPR. */
-extern rtx expand_vec_cond_expr (tree, rtx);
-
+extern rtx expand_vec_cond_expr (tree, tree, tree, tree, rtx);
/* Generate code for VEC_LSHIFT_EXPR and VEC_RSHIFT_EXPR. */
-extern rtx expand_vec_shift_expr (tree, rtx);
+extern rtx expand_vec_shift_expr (sepops, rtx);
-#define optab_handler(optab,mode) (&(optab)->handlers[(int) (mode)])
-#define convert_optab_handler(optab,mode,mode2) \
- (&(optab)->handlers[(int) (mode)][(int) (mode2)])
+/* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
+ if the target does not have such an insn. */
+
+static inline enum insn_code
+optab_handler (optab op, enum machine_mode mode)
+{
+ return (enum insn_code) (op->handlers[(int) mode].insn_code
+ + (int) CODE_FOR_nothing);
+}
+
+/* Record that insn CODE should be used to implement mode MODE of OP. */
+
+static inline void
+set_optab_handler (optab op, enum machine_mode mode, enum insn_code code)
+{
+ op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
+}
+
+/* Return the insn used to perform conversion OP from mode FROM_MODE
+ to mode TO_MODE; return CODE_FOR_nothing if the target does not have
+ such an insn. */
+
+static inline enum insn_code
+convert_optab_handler (convert_optab op, enum machine_mode to_mode,
+ enum machine_mode from_mode)
+{
+ return ((enum insn_code)
+ (op->handlers[(int) to_mode][(int) from_mode].insn_code
+ + (int) CODE_FOR_nothing));
+}
+
+/* Record that insn CODE should be used to perform conversion OP
+ from mode FROM_MODE to mode TO_MODE. */
+
+static inline void
+set_convert_optab_handler (convert_optab op, enum machine_mode to_mode,
+ enum machine_mode from_mode, enum insn_code code)
+{
+ op->handlers[(int) to_mode][(int) from_mode].insn_code
+ = (int) code - (int) CODE_FOR_nothing;
+}
+
+/* Return the insn used to implement mode MODE of OP, or CODE_FOR_nothing
+ if the target does not have such an insn. */
+
+static inline enum insn_code
+direct_optab_handler (direct_optab op, enum machine_mode mode)
+{
+ return (enum insn_code) (op->handlers[(int) mode].insn_code
+ + (int) CODE_FOR_nothing);
+}
+
+/* Record that insn CODE should be used to implement mode MODE of OP. */
+
+static inline void
+set_direct_optab_handler (direct_optab op, enum machine_mode mode,
+ enum insn_code code)
+{
+ op->handlers[(int) mode].insn_code = (int) code - (int) CODE_FOR_nothing;
+}
-extern rtx optab_libfunc (optab optab, enum machine_mode mode);
extern rtx optab_libfunc (optab optab, enum machine_mode mode);
extern rtx convert_optab_libfunc (convert_optab optab, enum machine_mode mode1,
enum machine_mode mode2);
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