#include "langhooks.h"
#include "target.h"
#include "cgraph.h"
-
-/* Decide whether a function's arguments should be processed
- from first to last or from last to first.
-
- They should if the stack and args grow in opposite directions, but
- only if we have push insns. */
-
-#ifdef PUSH_ROUNDING
-
-#ifndef PUSH_ARGS_REVERSED
-#if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
-#define PUSH_ARGS_REVERSED PUSH_ARGS
-#endif
-#endif
-
-#endif
-
-#ifndef PUSH_ARGS_REVERSED
-#define PUSH_ARGS_REVERSED 0
-#endif
+#include "except.h"
#ifndef STACK_POINTER_OFFSET
#define STACK_POINTER_OFFSET 0
even though pass_on_stack is zero, just because FUNCTION_ARG says so.
pass_on_stack identifies arguments that *cannot* go in registers. */
int pass_on_stack;
- /* Offset of this argument from beginning of stack-args. */
- struct args_size offset;
- /* Similar, but offset to the start of the stack slot. Different from
- OFFSET if this arg pads downward. */
- struct args_size slot_offset;
- /* Size of this argument on the stack, rounded up for any padding it gets,
- parts of the argument passed in registers do not count.
- If REG_PARM_STACK_SPACE is defined, then register parms
- are counted here as well. */
- struct args_size size;
+ /* Some fields packaged up for locate_and_pad_parm. */
+ struct locate_and_pad_arg_data locate;
/* Location on the stack at which parameter should be stored. The store
has already been done if STACK == VALUE. */
rtx stack;
word-sized pseudos we made. */
rtx *aligned_regs;
int n_aligned_regs;
- /* The amount that the stack pointer needs to be adjusted to
- force alignment for the next argument. */
- struct args_size alignment_pad;
};
/* A vector of one char per byte of stack space. A byte if nonzero if
argument list for the constructor call. */
int stack_arg_under_construction;
-static int calls_function PARAMS ((tree, int));
-static int calls_function_1 PARAMS ((tree, int));
-
-static void emit_call_1 PARAMS ((rtx, tree, tree, HOST_WIDE_INT,
- HOST_WIDE_INT, HOST_WIDE_INT, rtx,
- rtx, int, rtx, int,
- CUMULATIVE_ARGS *));
-static void precompute_register_parameters PARAMS ((int,
- struct arg_data *,
- int *));
-static int store_one_arg PARAMS ((struct arg_data *, rtx, int, int,
- int));
-static void store_unaligned_arguments_into_pseudos PARAMS ((struct arg_data *,
- int));
-static int finalize_must_preallocate PARAMS ((int, int,
- struct arg_data *,
- struct args_size *));
-static void precompute_arguments PARAMS ((int, int,
- struct arg_data *));
-static int compute_argument_block_size PARAMS ((int,
- struct args_size *,
- int));
-static void initialize_argument_information PARAMS ((int,
- struct arg_data *,
- struct args_size *,
- int, tree, tree,
- CUMULATIVE_ARGS *,
- int, rtx *, int *,
- int *, int *));
-static void compute_argument_addresses PARAMS ((struct arg_data *,
- rtx, int));
-static rtx rtx_for_function_call PARAMS ((tree, tree));
-static void load_register_parameters PARAMS ((struct arg_data *,
- int, rtx *, int,
- int, int *));
-static rtx emit_library_call_value_1 PARAMS ((int, rtx, rtx,
- enum libcall_type,
- enum machine_mode,
- int, va_list));
-static int special_function_p PARAMS ((tree, int));
-static rtx try_to_integrate PARAMS ((tree, tree, rtx,
- int, tree, rtx));
-static int check_sibcall_argument_overlap_1 PARAMS ((rtx));
-static int check_sibcall_argument_overlap PARAMS ((rtx, struct arg_data *,
- int));
-
-static int combine_pending_stack_adjustment_and_call
- PARAMS ((int, struct args_size *, int));
-static tree fix_unsafe_tree PARAMS ((tree));
+static int calls_function (tree, int);
+static int calls_function_1 (tree, int);
+
+static void emit_call_1 (rtx, tree, tree, HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT, rtx, rtx, int, rtx, int,
+ CUMULATIVE_ARGS *);
+static void precompute_register_parameters (int, struct arg_data *, int *);
+static int store_one_arg (struct arg_data *, rtx, int, int, int);
+static void store_unaligned_arguments_into_pseudos (struct arg_data *, int);
+static int finalize_must_preallocate (int, int, struct arg_data *,
+ struct args_size *);
+static void precompute_arguments (int, int, struct arg_data *);
+static int compute_argument_block_size (int, struct args_size *, int);
+static void initialize_argument_information (int, struct arg_data *,
+ struct args_size *, int, tree,
+ tree, CUMULATIVE_ARGS *, int,
+ rtx *, int *, int *, int *);
+static void compute_argument_addresses (struct arg_data *, rtx, int);
+static rtx rtx_for_function_call (tree, tree);
+static void load_register_parameters (struct arg_data *, int, rtx *, int,
+ int, int *);
+static rtx emit_library_call_value_1 (int, rtx, rtx, enum libcall_type,
+ enum machine_mode, int, va_list);
+static int special_function_p (tree, int);
+static rtx try_to_integrate (tree, tree, rtx, int, tree, rtx);
+static int check_sibcall_argument_overlap_1 (rtx);
+static int check_sibcall_argument_overlap (rtx, struct arg_data *, int);
+
+static int combine_pending_stack_adjustment_and_call (int, struct args_size *,
+ int);
+static tree fix_unsafe_tree (tree);
#ifdef REG_PARM_STACK_SPACE
-static rtx save_fixed_argument_area PARAMS ((int, rtx, int *, int *));
-static void restore_fixed_argument_area PARAMS ((rtx, rtx, int, int));
+static rtx save_fixed_argument_area (int, rtx, int *, int *);
+static void restore_fixed_argument_area (rtx, rtx, int, int);
#endif
\f
/* If WHICH is 1, return 1 if EXP contains a call to the built-in function
static tree calls_function_save_exprs;
static int
-calls_function (exp, which)
- tree exp;
- int which;
+calls_function (tree exp, int which)
{
int val;
/* Recursive function to do the work of above function. */
static int
-calls_function_1 (exp, which)
- tree exp;
- int which;
+calls_function_1 (tree exp, int which)
{
int i;
enum tree_code code = TREE_CODE (exp);
CALL_INSN_FUNCTION_USAGE information. */
rtx
-prepare_call_address (funexp, fndecl, call_fusage, reg_parm_seen, sibcallp)
- rtx funexp;
- tree fndecl;
- rtx *call_fusage;
- int reg_parm_seen;
- int sibcallp;
+prepare_call_address (rtx funexp, tree fndecl, rtx *call_fusage,
+ int reg_parm_seen, int sibcallp)
{
rtx static_chain_value = 0;
denote registers used by the called function. */
static void
-emit_call_1 (funexp, fndecl, funtype, stack_size, rounded_stack_size,
- struct_value_size, next_arg_reg, valreg, old_inhibit_defer_pop,
- call_fusage, ecf_flags, args_so_far)
- rtx funexp;
- tree fndecl ATTRIBUTE_UNUSED;
- tree funtype ATTRIBUTE_UNUSED;
- HOST_WIDE_INT stack_size ATTRIBUTE_UNUSED;
- HOST_WIDE_INT rounded_stack_size;
- HOST_WIDE_INT struct_value_size ATTRIBUTE_UNUSED;
- rtx next_arg_reg ATTRIBUTE_UNUSED;
- rtx valreg;
- int old_inhibit_defer_pop;
- rtx call_fusage;
- int ecf_flags;
- CUMULATIVE_ARGS *args_so_far ATTRIBUTE_UNUSED;
+emit_call_1 (rtx funexp, tree fndecl ATTRIBUTE_UNUSED, tree funtype ATTRIBUTE_UNUSED,
+ HOST_WIDE_INT stack_size ATTRIBUTE_UNUSED,
+ HOST_WIDE_INT rounded_stack_size,
+ HOST_WIDE_INT struct_value_size ATTRIBUTE_UNUSED,
+ rtx next_arg_reg ATTRIBUTE_UNUSED, rtx valreg,
+ int old_inhibit_defer_pop, rtx call_fusage, int ecf_flags,
+ CUMULATIVE_ARGS *args_so_far ATTRIBUTE_UNUSED)
{
rtx rounded_stack_size_rtx = GEN_INT (rounded_stack_size);
rtx call_insn;
#ifdef CALL_POPS_ARGS
n_popped += CALL_POPS_ARGS (* args_so_far);
#endif
-
+
/* Ensure address is valid. SYMBOL_REF is already valid, so no need,
and we don't want to load it into a register as an optimization,
because prepare_call_address already did it if it should be done. */
#endif
abort ();
- /* Find the CALL insn we just emitted. */
- for (call_insn = get_last_insn ();
- call_insn && GET_CODE (call_insn) != CALL_INSN;
- call_insn = PREV_INSN (call_insn))
- ;
-
- if (! call_insn)
- abort ();
+ /* Find the call we just emitted. */
+ call_insn = last_call_insn ();
/* Mark memory as used for "pure" function call. */
if (ecf_flags & ECF_PURE)
gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (VOIDmode))),
call_fusage);
- /* Put the register usage information on the CALL. If there is already
- some usage information, put ours at the end. */
- if (CALL_INSN_FUNCTION_USAGE (call_insn))
- {
- rtx link;
-
- for (link = CALL_INSN_FUNCTION_USAGE (call_insn); XEXP (link, 1) != 0;
- link = XEXP (link, 1))
- ;
-
- XEXP (link, 1) = call_fusage;
- }
- else
- CALL_INSN_FUNCTION_USAGE (call_insn) = call_fusage;
+ /* Put the register usage information there. */
+ add_function_usage_to (call_insn, call_fusage);
/* If this is a const call, then set the insn's unchanging bit. */
if (ecf_flags & (ECF_CONST | ECF_PURE))
if (ecf_flags & ECF_NOTHROW)
REG_NOTES (call_insn) = gen_rtx_EXPR_LIST (REG_EH_REGION, const0_rtx,
REG_NOTES (call_insn));
+ else
+ note_eh_region_may_contain_throw ();
if (ecf_flags & ECF_NORETURN)
REG_NOTES (call_insn) = gen_rtx_EXPR_LIST (REG_NORETURN, const0_rtx,
space from the stack such as alloca. */
static int
-special_function_p (fndecl, flags)
- tree fndecl;
- int flags;
+special_function_p (tree fndecl, int flags)
{
if (! (flags & ECF_MALLOC)
&& fndecl && DECL_NAME (fndecl)
/* Return nonzero when tree represent call to longjmp. */
int
-setjmp_call_p (fndecl)
- tree fndecl;
+setjmp_call_p (tree fndecl)
{
return special_function_p (fndecl, 0) & ECF_RETURNS_TWICE;
}
/* Return true when exp contains alloca call. */
bool
-alloca_call_p (exp)
- tree exp;
+alloca_call_p (tree exp)
{
if (TREE_CODE (exp) == CALL_EXPR
&& TREE_CODE (TREE_OPERAND (exp, 0)) == ADDR_EXPR
/* Detect flags (function attributes) from the function decl or type node. */
int
-flags_from_decl_or_type (exp)
- tree exp;
+flags_from_decl_or_type (tree exp)
{
int flags = 0;
tree type = exp;
Set REG_PARM_SEEN if we encounter a register parameter. */
static void
-precompute_register_parameters (num_actuals, args, reg_parm_seen)
- int num_actuals;
- struct arg_data *args;
- int *reg_parm_seen;
+precompute_register_parameters (int num_actuals, struct arg_data *args, int *reg_parm_seen)
{
int i;
parameters, we must save and restore it. */
static rtx
-save_fixed_argument_area (reg_parm_stack_space, argblock,
- low_to_save, high_to_save)
- int reg_parm_stack_space;
- rtx argblock;
- int *low_to_save;
- int *high_to_save;
+save_fixed_argument_area (int reg_parm_stack_space, rtx argblock, int *low_to_save, int *high_to_save)
{
int low;
int high;
}
static void
-restore_fixed_argument_area (save_area, argblock, high_to_save, low_to_save)
- rtx save_area;
- rtx argblock;
- int high_to_save;
- int low_to_save;
+restore_fixed_argument_area (rtx save_area, rtx argblock, int high_to_save, int low_to_save)
{
enum machine_mode save_mode = GET_MODE (save_area);
int delta;
the aligned_regs array if it is nonzero. */
static void
-store_unaligned_arguments_into_pseudos (args, num_actuals)
- struct arg_data *args;
- int num_actuals;
+store_unaligned_arguments_into_pseudos (struct arg_data *args, int num_actuals)
{
int i, j;
flags which may may be modified by this routine. */
static void
-initialize_argument_information (num_actuals, args, args_size, n_named_args,
- actparms, fndecl, args_so_far,
- reg_parm_stack_space, old_stack_level,
- old_pending_adj, must_preallocate,
- ecf_flags)
- int num_actuals ATTRIBUTE_UNUSED;
- struct arg_data *args;
- struct args_size *args_size;
- int n_named_args ATTRIBUTE_UNUSED;
- tree actparms;
- tree fndecl;
- CUMULATIVE_ARGS *args_so_far;
- int reg_parm_stack_space;
- rtx *old_stack_level;
- int *old_pending_adj;
- int *must_preallocate;
- int *ecf_flags;
+initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED,
+ struct arg_data *args,
+ struct args_size *args_size,
+ int n_named_args ATTRIBUTE_UNUSED,
+ tree actparms, tree fndecl,
+ CUMULATIVE_ARGS *args_so_far,
+ int reg_parm_stack_space,
+ rtx *old_stack_level, int *old_pending_adj,
+ int *must_preallocate, int *ecf_flags)
{
/* 1 if scanning parms front to back, -1 if scanning back to front. */
int inc;
/* Count arg position in order args appear. */
int argpos;
- struct args_size alignment_pad;
int i;
tree p;
with those made by function.c. */
/* See if this argument should be passed by invisible reference. */
- if ((TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST
- && contains_placeholder_p (TYPE_SIZE (type)))
+ if (CONTAINS_PLACEHOLDER_P (TYPE_SIZE (type))
|| TREE_ADDRESSABLE (type)
#ifdef FUNCTION_ARG_PASS_BY_REFERENCE
|| FUNCTION_ARG_PASS_BY_REFERENCE (*args_so_far, TYPE_MODE (type),
#else
args[i].reg != 0,
#endif
- fndecl, args_size, &args[i].offset,
- &args[i].size, &alignment_pad);
-
-#ifndef ARGS_GROW_DOWNWARD
- args[i].slot_offset = *args_size;
-#endif
-
- args[i].alignment_pad = alignment_pad;
-
- /* If a part of the arg was put into registers,
- don't include that part in the amount pushed. */
- if (reg_parm_stack_space == 0 && ! args[i].pass_on_stack)
- args[i].size.constant -= ((args[i].partial * UNITS_PER_WORD)
- / (PARM_BOUNDARY / BITS_PER_UNIT)
- * (PARM_BOUNDARY / BITS_PER_UNIT));
+ args[i].pass_on_stack ? 0 : args[i].partial,
+ fndecl, args_size, &args[i].locate);
/* Update ARGS_SIZE, the total stack space for args so far. */
- args_size->constant += args[i].size.constant;
- if (args[i].size.var)
- {
- ADD_PARM_SIZE (*args_size, args[i].size.var);
- }
-
- /* Since the slot offset points to the bottom of the slot,
- we must record it after incrementing if the args grow down. */
-#ifdef ARGS_GROW_DOWNWARD
- args[i].slot_offset = *args_size;
-
- args[i].slot_offset.constant = -args_size->constant;
- if (args_size->var)
- SUB_PARM_SIZE (args[i].slot_offset, args_size->var);
-#endif
+ args_size->constant += args[i].locate.size.constant;
+ if (args[i].locate.size.var)
+ ADD_PARM_SIZE (*args_size, args[i].locate.size.var);
/* Increment ARGS_SO_FAR, which has info about which arg-registers
have been used, etc. */
for arguments passed in registers. */
static int
-compute_argument_block_size (reg_parm_stack_space, args_size,
- preferred_stack_boundary)
- int reg_parm_stack_space;
- struct args_size *args_size;
- int preferred_stack_boundary ATTRIBUTE_UNUSED;
+compute_argument_block_size (int reg_parm_stack_space,
+ struct args_size *args_size,
+ int preferred_stack_boundary ATTRIBUTE_UNUSED)
{
int unadjusted_args_size = args_size->constant;
precomputed argument. */
static void
-precompute_arguments (flags, num_actuals, args)
- int flags;
- int num_actuals;
- struct arg_data *args;
+precompute_arguments (int flags, int num_actuals, struct arg_data *args)
{
int i;
compute and return the final value for MUST_PREALLOCATE. */
static int
-finalize_must_preallocate (must_preallocate, num_actuals, args, args_size)
- int must_preallocate;
- int num_actuals;
- struct arg_data *args;
- struct args_size *args_size;
+finalize_must_preallocate (int must_preallocate, int num_actuals, struct arg_data *args, struct args_size *args_size)
{
/* See if we have or want to preallocate stack space.
ARGBLOCK is an rtx for the address of the outgoing arguments. */
static void
-compute_argument_addresses (args, argblock, num_actuals)
- struct arg_data *args;
- rtx argblock;
- int num_actuals;
+compute_argument_addresses (struct arg_data *args, rtx argblock, int num_actuals)
{
if (argblock)
{
for (i = 0; i < num_actuals; i++)
{
- rtx offset = ARGS_SIZE_RTX (args[i].offset);
- rtx slot_offset = ARGS_SIZE_RTX (args[i].slot_offset);
+ rtx offset = ARGS_SIZE_RTX (args[i].locate.offset);
+ rtx slot_offset = ARGS_SIZE_RTX (args[i].locate.slot_offset);
rtx addr;
/* Skip this parm if it will not be passed on the stack. */
ADDR is the operand 0 of CALL_EXPR for this call. */
static rtx
-rtx_for_function_call (fndecl, addr)
- tree fndecl;
- tree addr;
+rtx_for_function_call (tree fndecl, tree addr)
{
rtx funexp;
expressions were already evaluated.
Mark all register-parms as living through the call, putting these USE
- insns in the CALL_INSN_FUNCTION_USAGE field.
-
+ insns in the CALL_INSN_FUNCTION_USAGE field.
+
When IS_SIBCALL, perform the check_sibcall_overlap_argument_overlap
checking, setting *SIBCALL_FAILURE if appropriate. */
static void
-load_register_parameters (args, num_actuals, call_fusage, flags,
- is_sibcall, sibcall_failure)
- struct arg_data *args;
- int num_actuals;
- rtx *call_fusage;
- int flags;
- int is_sibcall;
- int *sibcall_failure;
+load_register_parameters (struct arg_data *args, int num_actuals,
+ rtx *call_fusage, int flags, int is_sibcall,
+ int *sibcall_failure)
{
int i, j;
about the parameters. */
static rtx
-try_to_integrate (fndecl, actparms, target, ignore, type, structure_value_addr)
- tree fndecl;
- tree actparms;
- rtx target;
- int ignore;
- tree type;
- rtx structure_value_addr;
+try_to_integrate (tree fndecl, tree actparms, rtx target, int ignore,
+ tree type, rtx structure_value_addr)
{
rtx temp;
rtx before_call;
be popped after the call. Returns the adjustment. */
static int
-combine_pending_stack_adjustment_and_call (unadjusted_args_size,
- args_size,
- preferred_unit_stack_boundary)
- int unadjusted_args_size;
- struct args_size *args_size;
- int preferred_unit_stack_boundary;
+combine_pending_stack_adjustment_and_call (int unadjusted_args_size,
+ struct args_size *args_size,
+ int preferred_unit_stack_boundary)
{
/* The number of bytes to pop so that the stack will be
under-aligned by UNADJUSTED_ARGS_SIZE bytes. */
zero otherwise. */
static int
-check_sibcall_argument_overlap_1 (x)
- rtx x;
+check_sibcall_argument_overlap_1 (rtx x)
{
RTX_CODE code;
int i, j;
slots, zero otherwise. */
static int
-check_sibcall_argument_overlap (insn, arg, mark_stored_args_map)
- rtx insn;
- struct arg_data *arg;
- int mark_stored_args_map;
+check_sibcall_argument_overlap (rtx insn, struct arg_data *arg, int mark_stored_args_map)
{
int low, high;
if (mark_stored_args_map)
{
#ifdef ARGS_GROW_DOWNWARD
- low = -arg->slot_offset.constant - arg->size.constant;
+ low = -arg->locate.slot_offset.constant - arg->locate.size.constant;
#else
- low = arg->slot_offset.constant;
+ low = arg->locate.slot_offset.constant;
#endif
- for (high = low + arg->size.constant; low < high; low++)
+ for (high = low + arg->locate.size.constant; low < high; low++)
SET_BIT (stored_args_map, low);
}
return insn != NULL_RTX;
}
static tree
-fix_unsafe_tree (t)
- tree t;
+fix_unsafe_tree (tree t)
{
switch (unsafe_for_reeval (t))
{
If IGNORE is nonzero, then we ignore the value of the function call. */
rtx
-expand_call (exp, target, ignore)
- tree exp;
- rtx target;
- int ignore;
+expand_call (tree exp, rtx target, int ignore)
{
/* Nonzero if we are currently expanding a call. */
static int currently_expanding_call = 0;
rtx tail_call_insns = NULL_RTX;
/* Data type of the function. */
tree funtype;
+ tree type_arg_types;
/* Declaration of the function being called,
or 0 if the function is computed (not known by name). */
tree fndecl = 0;
/* Some stack pointer alterations we make are performed via
allocate_dynamic_stack_space. This modifies the stack_pointer_delta,
which we then also need to save/restore along the way. */
- int old_stack_pointer_delta;
+ int old_stack_pointer_delta = 0;
rtx call_fusage;
tree p = TREE_OPERAND (exp, 0);
else
flags |= flags_from_decl_or_type (TREE_TYPE (TREE_TYPE (p)));
+ /* Warn if this value is an aggregate type,
+ regardless of which calling convention we are using for it. */
+ if (warn_aggregate_return && AGGREGATE_TYPE_P (TREE_TYPE (exp)))
+ warning ("function call has aggregate value");
+
+ /* If the result of a pure or const function call is ignored (or void),
+ and none of its arguments are volatile, we can avoid expanding the
+ call and just evaluate the arguments for side-effects. */
+ if ((flags & (ECF_CONST | ECF_PURE))
+ && (ignore || target == const0_rtx
+ || TYPE_MODE (TREE_TYPE (exp)) == VOIDmode))
+ {
+ bool volatilep = false;
+ tree arg;
+
+ for (arg = actparms; arg; arg = TREE_CHAIN (arg))
+ if (TREE_THIS_VOLATILE (TREE_VALUE (arg)))
+ {
+ volatilep = true;
+ break;
+ }
+
+ if (! volatilep)
+ {
+ for (arg = actparms; arg; arg = TREE_CHAIN (arg))
+ expand_expr (TREE_VALUE (arg), const0_rtx,
+ VOIDmode, EXPAND_NORMAL);
+ return const0_rtx;
+ }
+ }
+
#ifdef REG_PARM_STACK_SPACE
#ifdef MAYBE_REG_PARM_STACK_SPACE
reg_parm_stack_space = MAYBE_REG_PARM_STACK_SPACE;
must_preallocate = 1;
#endif
- /* Warn if this value is an aggregate type,
- regardless of which calling convention we are using for it. */
- if (warn_aggregate_return && AGGREGATE_TYPE_P (TREE_TYPE (exp)))
- warning ("function call has aggregate value");
-
/* Set up a place to return a structure. */
/* Cater to broken compilers. */
abort ();
funtype = TREE_TYPE (funtype);
+ /* Munge the tree to split complex arguments into their imaginary
+ and real parts. */
+ if (SPLIT_COMPLEX_ARGS)
+ {
+ type_arg_types = split_complex_types (TYPE_ARG_TYPES (funtype));
+ actparms = split_complex_values (actparms);
+ }
+ else
+ type_arg_types = TYPE_ARG_TYPES (funtype);
+
/* See if this is a call to a function that can return more than once
or a call to longjmp or malloc. */
flags |= special_function_p (fndecl, flags);
if ((STRICT_ARGUMENT_NAMING
|| ! PRETEND_OUTGOING_VARARGS_NAMED)
- && TYPE_ARG_TYPES (funtype) != 0)
+ && type_arg_types != 0)
n_named_args
- = (list_length (TYPE_ARG_TYPES (funtype))
+ = (list_length (type_arg_types)
/* Don't include the last named arg. */
- (STRICT_ARGUMENT_NAMING ? 0 : 1)
/* Count the struct value address, if it is passed as a parm. */
if (currently_expanding_call++ != 0
|| !flag_optimize_sibling_calls
|| !rtx_equal_function_value_matters
- || any_pending_cleanups (1)
+ || any_pending_cleanups ()
|| args_size.var)
try_tail_call = try_tail_recursion = 0;
optimized. */
|| (flags & (ECF_RETURNS_TWICE | ECF_LONGJMP | ECF_NORETURN))
|| TYPE_VOLATILE (TREE_TYPE (TREE_TYPE (addr)))
+ /* If the called function is nested in the current one, it might access
+ some of the caller's arguments, but could clobber them beforehand if
+ the argument areas are shared. */
+ || (fndecl && decl_function_context (fndecl) == current_function_decl)
/* If this function requires more stack slots than the current
function, we cannot change it into a sibling call. */
|| args_size.constant > current_function_args_size
/* If the callee pops its own arguments, then it must pop exactly
the same number of arguments as the current function. */
- || RETURN_POPS_ARGS (fndecl, funtype, args_size.constant)
- != RETURN_POPS_ARGS (current_function_decl,
- TREE_TYPE (current_function_decl),
- current_function_args_size))
+ || (RETURN_POPS_ARGS (fndecl, funtype, args_size.constant)
+ != RETURN_POPS_ARGS (current_function_decl,
+ TREE_TYPE (current_function_decl),
+ current_function_args_size))
+ || !(*lang_hooks.decls.ok_for_sibcall) (fndecl))
try_tail_call = 0;
if (try_tail_call || try_tail_recursion)
addr = fix_unsafe_tree (addr);
/* Expanding one of those dangerous arguments could have added
cleanups, but otherwise give it a whirl. */
- if (any_pending_cleanups (1))
+ if (any_pending_cleanups ())
try_tail_call = try_tail_recursion = 0;
}
expand_start_target_temps ();
if (optimize_tail_recursion (actparms, get_last_insn ()))
{
- if (any_pending_cleanups (1))
+ if (any_pending_cleanups ())
try_tail_call = try_tail_recursion = 0;
else
tail_recursion_insns = get_insns ();
if (needed == 0)
argblock = virtual_outgoing_args_rtx;
else
- argblock = push_block (GEN_INT (needed), 0, 0);
+ {
+ argblock = push_block (GEN_INT (needed), 0, 0);
+#ifdef ARGS_GROW_DOWNWARD
+ argblock = plus_constant (argblock, needed);
+#endif
+ }
/* We only really need to call `copy_to_reg' in the case
where push insns are going to be used to pass ARGBLOCK
break;
}
}
-
+
compute_argument_addresses (args, argblock, num_actuals);
/* If we push args individually in reverse order, perform stack alignment
structure value. */
if (pass != 0 && structure_value_addr && ! structure_value_addr_parm)
{
+#ifdef POINTERS_EXTEND_UNSIGNED
+ if (GET_MODE (structure_value_addr) != Pmode)
+ structure_value_addr = convert_memory_address
+ (Pmode, structure_value_addr);
+#endif
emit_move_insn (struct_value_rtx,
force_reg (Pmode,
force_operand (structure_value_addr,
if (flags & ECF_LONGJMP)
current_function_calls_longjmp = 1;
- /* If this function is returning into a memory location marked as
- readonly, it means it is initializing that location. But we normally
- treat functions as not clobbering such locations, so we need to
- specify that this one does. */
- if (target != 0 && GET_CODE (target) == MEM
- && structure_value_addr != 0 && RTX_UNCHANGING_P (target))
- emit_insn (gen_rtx_CLOBBER (VOIDmode, target));
-
/* If value type not void, return an rtx for the value. */
/* If there are cleanups to be called, don't use a hard reg as target.
We need to double check this and see if it matters anymore. */
- if (any_pending_cleanups (1))
+ if (any_pending_cleanups ())
{
if (target && REG_P (target)
&& REGNO (target) < FIRST_PSEUDO_REGISTER)
If they refer to the same register, this move will be a no-op,
except when function inlining is being done. */
emit_move_insn (target, valreg);
+
+ /* If we are setting a MEM, this code must be executed. Since it is
+ emitted after the call insn, sibcall optimization cannot be
+ performed in that case. */
+ if (GET_CODE (target) == MEM)
+ sibcall_failure = 1;
}
else if (TYPE_MODE (TREE_TYPE (exp)) == BLKmode)
{
emit_move_insn (stack_area, args[i].save_area);
else
emit_block_move (stack_area, args[i].save_area,
- GEN_INT (args[i].size.constant),
+ GEN_INT (args[i].locate.size.constant),
BLOCK_OP_CALL_PARM);
}
expand_end_target_temps ();
}
+ /* If this function is returning into a memory location marked as
+ readonly, it means it is initializing that location. We normally treat
+ functions as not clobbering such locations, so we need to specify that
+ this one does. We do this by adding the appropriate CLOBBER to the
+ CALL_INSN function usage list. This cannot be done by emitting a
+ standalone CLOBBER after the call because the latter would be ignored
+ by at least the delay slot scheduling pass. We do this now instead of
+ adding to call_fusage before the call to emit_call_1 because TARGET
+ may be modified in the meantime. */
+ if (structure_value_addr != 0 && target != 0
+ && GET_CODE (target) == MEM && RTX_UNCHANGING_P (target))
+ add_function_usage_to
+ (last_call_insn (),
+ gen_rtx_EXPR_LIST (VOIDmode, gen_rtx_CLOBBER (VOIDmode, target),
+ NULL_RTX));
+
insns = get_insns ();
end_sequence ();
return target;
}
+
+/* Traverse an argument list in VALUES and expand all complex
+ arguments into their components. */
+tree
+split_complex_values (tree values)
+{
+ tree p;
+
+ values = copy_list (values);
+
+ for (p = values; p; p = TREE_CHAIN (p))
+ {
+ tree complex_value = TREE_VALUE (p);
+ tree complex_type;
+
+ complex_type = TREE_TYPE (complex_value);
+ if (!complex_type)
+ continue;
+
+ if (TREE_CODE (complex_type) == COMPLEX_TYPE)
+ {
+ tree subtype;
+ tree real, imag, next;
+
+ subtype = TREE_TYPE (complex_type);
+ complex_value = save_expr (complex_value);
+ real = build1 (REALPART_EXPR, subtype, complex_value);
+ imag = build1 (IMAGPART_EXPR, subtype, complex_value);
+
+ TREE_VALUE (p) = real;
+ next = TREE_CHAIN (p);
+ imag = build_tree_list (NULL_TREE, imag);
+ TREE_CHAIN (p) = imag;
+ TREE_CHAIN (imag) = next;
+
+ /* Skip the newly created node. */
+ p = TREE_CHAIN (p);
+ }
+ }
+
+ return values;
+}
+
+/* Traverse a list of TYPES and expand all complex types into their
+ components. */
+tree
+split_complex_types (tree types)
+{
+ tree p;
+
+ types = copy_list (types);
+
+ for (p = types; p; p = TREE_CHAIN (p))
+ {
+ tree complex_type = TREE_VALUE (p);
+
+ if (TREE_CODE (complex_type) == COMPLEX_TYPE)
+ {
+ tree next, imag;
+
+ /* Rewrite complex type with component type. */
+ TREE_VALUE (p) = TREE_TYPE (complex_type);
+ next = TREE_CHAIN (p);
+
+ /* Add another component type for the imaginary part. */
+ imag = build_tree_list (NULL_TREE, TREE_VALUE (p));
+ TREE_CHAIN (p) = imag;
+ TREE_CHAIN (imag) = next;
+
+ /* Skip the newly created node. */
+ p = TREE_CHAIN (p);
+ }
+ }
+
+ return types;
+}
\f
/* Output a library call to function FUN (a SYMBOL_REF rtx).
The RETVAL parameter specifies whether return value needs to be saved, other
parameters are documented in the emit_library_call function below. */
static rtx
-emit_library_call_value_1 (retval, orgfun, value, fn_type, outmode, nargs, p)
- int retval;
- rtx orgfun;
- rtx value;
- enum libcall_type fn_type;
- enum machine_mode outmode;
- int nargs;
- va_list p;
+emit_library_call_value_1 (int retval, rtx orgfun, rtx value,
+ enum libcall_type fn_type,
+ enum machine_mode outmode, int nargs, va_list p)
{
/* Total size in bytes of all the stack-parms scanned so far. */
struct args_size args_size;
rtx fun;
int inc;
int count;
- struct args_size alignment_pad;
rtx argblock = 0;
CUMULATIVE_ARGS args_so_far;
struct arg
enum machine_mode mode;
rtx reg;
int partial;
- struct args_size offset;
- struct args_size size;
+ struct locate_and_pad_arg_data locate;
rtx save_area;
};
struct arg *argvec;
#else
argvec[count].reg != 0,
#endif
- NULL_TREE, &args_size, &argvec[count].offset,
- &argvec[count].size, &alignment_pad);
+ 0, NULL_TREE, &args_size, &argvec[count].locate);
if (argvec[count].reg == 0 || argvec[count].partial != 0
|| reg_parm_stack_space > 0)
- args_size.constant += argvec[count].size.constant;
+ args_size.constant += argvec[count].locate.size.constant;
FUNCTION_ARG_ADVANCE (args_so_far, Pmode, (tree) 0, 1);
{
rtx slot;
int must_copy = 1
-#ifdef FUNCTION_ARG_CALLEE_COPIES
+#ifdef FUNCTION_ARG_CALLEE_COPIES
&& ! FUNCTION_ARG_CALLEE_COPIES (args_so_far, mode,
NULL_TREE, 1)
#endif
#else
argvec[count].reg != 0,
#endif
- NULL_TREE, &args_size, &argvec[count].offset,
- &argvec[count].size, &alignment_pad);
+ argvec[count].partial,
+ NULL_TREE, &args_size, &argvec[count].locate);
- if (argvec[count].size.var)
+ if (argvec[count].locate.size.var)
abort ();
- if (reg_parm_stack_space == 0 && argvec[count].partial)
- argvec[count].size.constant -= argvec[count].partial * UNITS_PER_WORD;
-
if (argvec[count].reg == 0 || argvec[count].partial != 0
|| reg_parm_stack_space > 0)
- args_size.constant += argvec[count].size.constant;
+ args_size.constant += argvec[count].locate.size.constant;
FUNCTION_ARG_ADVANCE (args_so_far, mode, (tree) 0, 1);
}
#ifdef ARGS_GROW_DOWNWARD
/* stack_slot is negative, but we want to index stack_usage_map
with positive values. */
- upper_bound = -argvec[argnum].offset.constant + 1;
- lower_bound = upper_bound - argvec[argnum].size.constant;
+ upper_bound = -argvec[argnum].locate.offset.constant + 1;
+ lower_bound = upper_bound - argvec[argnum].locate.size.constant;
#else
- lower_bound = argvec[argnum].offset.constant;
- upper_bound = lower_bound + argvec[argnum].size.constant;
+ lower_bound = argvec[argnum].locate.offset.constant;
+ upper_bound = lower_bound + argvec[argnum].locate.size.constant;
#endif
i = lower_bound;
if (i < upper_bound)
{
- /* We need to make a save area. See what mode we can make
- it. */
+ /* We need to make a save area. */
+ unsigned int size
+ = argvec[argnum].locate.size.constant * BITS_PER_UNIT;
enum machine_mode save_mode
- = mode_for_size (argvec[argnum].size.constant
- * BITS_PER_UNIT,
- MODE_INT, 1);
+ = mode_for_size (size, MODE_INT, 1);
+ rtx adr
+ = plus_constant (argblock,
+ argvec[argnum].locate.offset.constant);
rtx stack_area
- = gen_rtx_MEM
- (save_mode,
- memory_address
- (save_mode,
- plus_constant (argblock,
- argvec[argnum].offset.constant)));
+ = gen_rtx_MEM (save_mode, memory_address (save_mode, adr));
argvec[argnum].save_area = gen_reg_rtx (save_mode);
emit_move_insn (argvec[argnum].save_area, stack_area);
emit_push_insn (val, mode, NULL_TREE, NULL_RTX, PARM_BOUNDARY,
partial, reg, 0, argblock,
- GEN_INT (argvec[argnum].offset.constant),
- reg_parm_stack_space, ARGS_SIZE_RTX (alignment_pad));
+ GEN_INT (argvec[argnum].locate.offset.constant),
+ reg_parm_stack_space,
+ ARGS_SIZE_RTX (argvec[argnum].locate.alignment_pad));
/* Now mark the segment we just used. */
if (ACCUMULATE_OUTGOING_ARGS)
if (argvec[count].save_area)
{
enum machine_mode save_mode = GET_MODE (argvec[count].save_area);
- rtx stack_area
- = gen_rtx_MEM (save_mode,
- memory_address
- (save_mode,
- plus_constant (argblock,
- argvec[count].offset.constant)));
+ rtx adr = plus_constant (argblock,
+ argvec[count].locate.offset.constant);
+ rtx stack_area = gen_rtx_MEM (save_mode,
+ memory_address (save_mode, adr));
emit_move_insn (stack_area, argvec[count].save_area);
}
or other LCT_ value for other types of library calls. */
void
-emit_library_call VPARAMS((rtx orgfun, enum libcall_type fn_type,
- enum machine_mode outmode, int nargs, ...))
+emit_library_call (rtx orgfun, enum libcall_type fn_type,
+ enum machine_mode outmode, int nargs, ...)
{
- VA_OPEN (p, nargs);
- VA_FIXEDARG (p, rtx, orgfun);
- VA_FIXEDARG (p, int, fn_type);
- VA_FIXEDARG (p, enum machine_mode, outmode);
- VA_FIXEDARG (p, int, nargs);
+ va_list p;
+ va_start (p, nargs);
emit_library_call_value_1 (0, orgfun, NULL_RTX, fn_type, outmode, nargs, p);
-
- VA_CLOSE (p);
+ va_end (p);
}
\f
/* Like emit_library_call except that an extra argument, VALUE,
If VALUE is nonzero, VALUE is returned. */
rtx
-emit_library_call_value VPARAMS((rtx orgfun, rtx value,
- enum libcall_type fn_type,
- enum machine_mode outmode, int nargs, ...))
+emit_library_call_value (rtx orgfun, rtx value,
+ enum libcall_type fn_type,
+ enum machine_mode outmode, int nargs, ...)
{
rtx result;
-
- VA_OPEN (p, nargs);
- VA_FIXEDARG (p, rtx, orgfun);
- VA_FIXEDARG (p, rtx, value);
- VA_FIXEDARG (p, int, fn_type);
- VA_FIXEDARG (p, enum machine_mode, outmode);
- VA_FIXEDARG (p, int, nargs);
+ va_list p;
+ va_start (p, nargs);
result = emit_library_call_value_1 (1, orgfun, value, fn_type, outmode,
nargs, p);
-
- VA_CLOSE (p);
+ va_end (p);
return result;
}
zero otherwise. */
static int
-store_one_arg (arg, argblock, flags, variable_size, reg_parm_stack_space)
- struct arg_data *arg;
- rtx argblock;
- int flags;
- int variable_size ATTRIBUTE_UNUSED;
- int reg_parm_stack_space;
+store_one_arg (struct arg_data *arg, rtx argblock, int flags,
+ int variable_size ATTRIBUTE_UNUSED, int reg_parm_stack_space)
{
tree pval = arg->tree_value;
rtx reg = 0;
else
upper_bound = 0;
- lower_bound = upper_bound - arg->size.constant;
+ lower_bound = upper_bound - arg->locate.size.constant;
#else
if (GET_CODE (XEXP (arg->stack_slot, 0)) == PLUS)
lower_bound = INTVAL (XEXP (XEXP (arg->stack_slot, 0), 1));
else
lower_bound = 0;
- upper_bound = lower_bound + arg->size.constant;
+ upper_bound = lower_bound + arg->locate.size.constant;
#endif
i = lower_bound;
if (i < upper_bound)
{
- /* We need to make a save area. See what mode we can make it. */
- enum machine_mode save_mode
- = mode_for_size (arg->size.constant * BITS_PER_UNIT, MODE_INT, 1);
- rtx stack_area
- = gen_rtx_MEM (save_mode,
- memory_address (save_mode,
- XEXP (arg->stack_slot, 0)));
+ /* We need to make a save area. */
+ unsigned int size = arg->locate.size.constant * BITS_PER_UNIT;
+ enum machine_mode save_mode = mode_for_size (size, MODE_INT, 1);
+ rtx adr = memory_address (save_mode, XEXP (arg->stack_slot, 0));
+ rtx stack_area = gen_rtx_MEM (save_mode, adr);
if (save_mode == BLKmode)
{
/* This isn't already where we want it on the stack, so put it there.
This can either be done with push or copy insns. */
- emit_push_insn (arg->value, arg->mode, TREE_TYPE (pval), NULL_RTX,
+ emit_push_insn (arg->value, arg->mode, TREE_TYPE (pval), NULL_RTX,
PARM_BOUNDARY, partial, reg, used - size, argblock,
- ARGS_SIZE_RTX (arg->offset), reg_parm_stack_space,
- ARGS_SIZE_RTX (arg->alignment_pad));
+ ARGS_SIZE_RTX (arg->locate.offset), reg_parm_stack_space,
+ ARGS_SIZE_RTX (arg->locate.alignment_pad));
/* Unless this is a partially-in-register argument, the argument is now
in the stack. */
/* Round its size up to a multiple
of the allocation unit for arguments. */
- if (arg->size.var != 0)
+ if (arg->locate.size.var != 0)
{
excess = 0;
- size_rtx = ARGS_SIZE_RTX (arg->size);
+ size_rtx = ARGS_SIZE_RTX (arg->locate.size);
}
else
{
/* PUSH_ROUNDING has no effect on us, because
emit_push_insn for BLKmode is careful to avoid it. */
- excess = (arg->size.constant - int_size_in_bytes (TREE_TYPE (pval))
+ excess = (arg->locate.size.constant
+ - int_size_in_bytes (TREE_TYPE (pval))
+ partial * UNITS_PER_WORD);
size_rtx = expand_expr (size_in_bytes (TREE_TYPE (pval)),
NULL_RTX, TYPE_MODE (sizetype), 0);
PARM_BOUNDARY, but the actual argument isn't. */
if (FUNCTION_ARG_PADDING (arg->mode, TREE_TYPE (pval)) == downward)
{
- if (arg->size.var)
+ if (arg->locate.size.var)
parm_align = BITS_PER_UNIT;
else if (excess)
{
if ((flags & ECF_SIBCALL) && GET_CODE (arg->value) == MEM)
{
/* emit_push_insn might not work properly if arg->value and
- argblock + arg->offset areas overlap. */
+ argblock + arg->locate.offset areas overlap. */
rtx x = arg->value;
int i = 0;
i = INTVAL (XEXP (XEXP (x, 0), 1));
/* expand_call should ensure this */
- if (arg->offset.var || GET_CODE (size_rtx) != CONST_INT)
+ if (arg->locate.offset.var || GET_CODE (size_rtx) != CONST_INT)
abort ();
- if (arg->offset.constant > i)
+ if (arg->locate.offset.constant > i)
{
- if (arg->offset.constant < i + INTVAL (size_rtx))
+ if (arg->locate.offset.constant < i + INTVAL (size_rtx))
sibcall_failure = 1;
}
- else if (arg->offset.constant < i)
+ else if (arg->locate.offset.constant < i)
{
- if (i < arg->offset.constant + INTVAL (size_rtx))
+ if (i < arg->locate.offset.constant + INTVAL (size_rtx))
sibcall_failure = 1;
}
}
emit_push_insn (arg->value, arg->mode, TREE_TYPE (pval), size_rtx,
parm_align, partial, reg, excess, argblock,
- ARGS_SIZE_RTX (arg->offset), reg_parm_stack_space,
- ARGS_SIZE_RTX (arg->alignment_pad));
+ ARGS_SIZE_RTX (arg->locate.offset), reg_parm_stack_space,
+ ARGS_SIZE_RTX (arg->locate.alignment_pad));
/* Unless this is a partially-in-register argument, the argument is now
in the stack.
For a little-endian machine, the reverse is true. */
bool
-default_must_pass_in_stack (mode, type)
- enum machine_mode mode;
- tree type;
+default_must_pass_in_stack (enum machine_mode mode, tree type)
{
if (!type)
return false;
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