/* Convert function calls to rtl insns, for GNU C compiler.
Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
- Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+ 2011 Free Software Foundation, Inc.
This file is part of GCC.
#include "libfuncs.h"
#include "function.h"
#include "regs.h"
-#include "toplev.h"
+#include "diagnostic-core.h"
#include "output.h"
#include "tm_p.h"
#include "timevar.h"
rtx stack;
/* Location on the stack of the start of this argument slot. This can
differ from STACK if this arg pads downward. This location is known
- to be aligned to FUNCTION_ARG_BOUNDARY. */
+ to be aligned to TARGET_FUNCTION_ARG_BOUNDARY. */
rtx stack_slot;
/* Place that this stack area has been saved, if needed. */
rtx save_area;
static void emit_call_1 (rtx, tree, tree, tree, HOST_WIDE_INT, HOST_WIDE_INT,
HOST_WIDE_INT, rtx, rtx, int, rtx, int,
- CUMULATIVE_ARGS *);
+ cumulative_args_t);
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 void initialize_argument_information (int, struct arg_data *,
struct args_size *, int,
tree, tree,
- tree, tree, CUMULATIVE_ARGS *, int,
+ tree, tree, cumulative_args_t, int,
rtx *, int *, int *, int *,
bool *, bool);
static void compute_argument_addresses (struct arg_data *, rtx, int);
CALL_INSN_FUNCTION_USAGE information. */
rtx
-prepare_call_address (rtx funexp, rtx static_chain_value,
+prepare_call_address (tree fndecl, rtx funexp, rtx static_chain_value,
rtx *call_fusage, int reg_parm_seen, int sibcallp)
{
/* Make a valid memory address and copy constants through pseudo-regs,
if (GET_CODE (funexp) != SYMBOL_REF)
/* If we are using registers for parameters, force the
function address into a register now. */
- funexp = ((SMALL_REGISTER_CLASSES && reg_parm_seen)
+ funexp = ((reg_parm_seen
+ && targetm.small_register_classes_for_mode_p (FUNCTION_MODE))
? force_not_mem (memory_address (FUNCTION_MODE, funexp))
: memory_address (FUNCTION_MODE, funexp));
else if (! sibcallp)
if (static_chain_value != 0)
{
+ rtx chain;
+
+ gcc_assert (fndecl);
+ chain = targetm.calls.static_chain (fndecl, false);
static_chain_value = convert_memory_address (Pmode, static_chain_value);
- emit_move_insn (static_chain_rtx, static_chain_value);
- if (REG_P (static_chain_rtx))
- use_reg (call_fusage, static_chain_rtx);
+ emit_move_insn (chain, static_chain_value);
+ if (REG_P (chain))
+ use_reg (call_fusage, chain);
}
return funexp;
The CALL_INSN is the first insn generated.
FNDECL is the declaration node of the function. This is given to the
- macro RETURN_POPS_ARGS to determine whether this function pops its own args.
+ hook TARGET_RETURN_POPS_ARGS to determine whether this function pops
+ its own args.
- FUNTYPE is the data type of the function. This is given to the macro
- RETURN_POPS_ARGS to determine whether this function pops its own args.
- We used to allow an identifier for library functions, but that doesn't
- work when the return type is an aggregate type and the calling convention
- says that the pointer to this aggregate is to be popped by the callee.
+ FUNTYPE is the data type of the function. This is given to the hook
+ TARGET_RETURN_POPS_ARGS to determine whether this function pops its
+ own args. We used to allow an identifier for library functions, but
+ that doesn't work when the return type is an aggregate type and the
+ calling convention says that the pointer to this aggregate is to be
+ popped by the callee.
STACK_SIZE is the number of bytes of arguments on the stack,
ROUNDED_STACK_SIZE is that number rounded up to
It is zero if this call doesn't want a structure value.
NEXT_ARG_REG is the rtx that results from executing
- FUNCTION_ARG (args_so_far, VOIDmode, void_type_node, 1)
+ targetm.calls.function_arg (&args_so_far, VOIDmode, void_type_node, true)
just after all the args have had their registers assigned.
This could be whatever you like, but normally it is the first
arg-register beyond those used for args in this call,
denote registers used by the called function. */
static void
-emit_call_1 (rtx funexp, tree fntree, tree fndecl ATTRIBUTE_UNUSED,
+emit_call_1 (rtx funexp, tree fntree ATTRIBUTE_UNUSED, 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)
+ cumulative_args_t args_so_far ATTRIBUTE_UNUSED)
{
rtx rounded_stack_size_rtx = GEN_INT (rounded_stack_size);
- rtx call_insn;
+ rtx call_insn, call, funmem;
int already_popped = 0;
- HOST_WIDE_INT n_popped = RETURN_POPS_ARGS (fndecl, funtype, stack_size);
-#if defined (HAVE_call) && defined (HAVE_call_value)
- rtx struct_value_size_rtx;
- struct_value_size_rtx = GEN_INT (struct_value_size);
-#endif
+ HOST_WIDE_INT n_popped
+ = targetm.calls.return_pops_args (fndecl, funtype, stack_size);
#ifdef CALL_POPS_ARGS
- n_popped += CALL_POPS_ARGS (* args_so_far);
+ n_popped += CALL_POPS_ARGS (*get_cumulative_args (args_so_far));
#endif
/* Ensure address is valid. SYMBOL_REF is already valid, so no need,
if (GET_CODE (funexp) != SYMBOL_REF)
funexp = memory_address (FUNCTION_MODE, funexp);
+ funmem = gen_rtx_MEM (FUNCTION_MODE, funexp);
+ if (fndecl && TREE_CODE (fndecl) == FUNCTION_DECL)
+ {
+ tree t = fndecl;
+ /* Although a built-in FUNCTION_DECL and its non-__builtin
+ counterpart compare equal and get a shared mem_attrs, they
+ produce different dump output in compare-debug compilations,
+ if an entry gets garbage collected in one compilation, then
+ adds a different (but equivalent) entry, while the other
+ doesn't run the garbage collector at the same spot and then
+ shares the mem_attr with the equivalent entry. */
+ if (DECL_BUILT_IN_CLASS (t) == BUILT_IN_NORMAL
+ && built_in_decls[DECL_FUNCTION_CODE (t)])
+ t = built_in_decls[DECL_FUNCTION_CODE (t)];
+ set_mem_expr (funmem, t);
+ }
+ else if (fntree)
+ set_mem_expr (funmem, build_simple_mem_ref (CALL_EXPR_FN (fntree)));
+
#if defined (HAVE_sibcall_pop) && defined (HAVE_sibcall_value_pop)
if ((ecf_flags & ECF_SIBCALL)
&& HAVE_sibcall_pop && HAVE_sibcall_value_pop
if possible, for the sake of frame pointer elimination. */
if (valreg)
- pat = GEN_SIBCALL_VALUE_POP (valreg,
- gen_rtx_MEM (FUNCTION_MODE, funexp),
- rounded_stack_size_rtx, next_arg_reg,
- n_pop);
+ pat = GEN_SIBCALL_VALUE_POP (valreg, funmem, rounded_stack_size_rtx,
+ next_arg_reg, n_pop);
else
- pat = GEN_SIBCALL_POP (gen_rtx_MEM (FUNCTION_MODE, funexp),
- rounded_stack_size_rtx, next_arg_reg, n_pop);
+ pat = GEN_SIBCALL_POP (funmem, rounded_stack_size_rtx, next_arg_reg,
+ n_pop);
emit_call_insn (pat);
already_popped = 1;
if possible, for the sake of frame pointer elimination. */
if (valreg)
- pat = GEN_CALL_VALUE_POP (valreg,
- gen_rtx_MEM (FUNCTION_MODE, funexp),
- rounded_stack_size_rtx, next_arg_reg, n_pop);
+ pat = GEN_CALL_VALUE_POP (valreg, funmem, rounded_stack_size_rtx,
+ next_arg_reg, n_pop);
else
- pat = GEN_CALL_POP (gen_rtx_MEM (FUNCTION_MODE, funexp),
- rounded_stack_size_rtx, next_arg_reg, n_pop);
+ pat = GEN_CALL_POP (funmem, rounded_stack_size_rtx, next_arg_reg,
+ n_pop);
emit_call_insn (pat);
already_popped = 1;
&& HAVE_sibcall && HAVE_sibcall_value)
{
if (valreg)
- emit_call_insn (GEN_SIBCALL_VALUE (valreg,
- gen_rtx_MEM (FUNCTION_MODE, funexp),
+ emit_call_insn (GEN_SIBCALL_VALUE (valreg, funmem,
rounded_stack_size_rtx,
next_arg_reg, NULL_RTX));
else
- emit_call_insn (GEN_SIBCALL (gen_rtx_MEM (FUNCTION_MODE, funexp),
- rounded_stack_size_rtx, next_arg_reg,
- struct_value_size_rtx));
+ emit_call_insn (GEN_SIBCALL (funmem, rounded_stack_size_rtx,
+ next_arg_reg,
+ GEN_INT (struct_value_size)));
}
else
#endif
if (HAVE_call && HAVE_call_value)
{
if (valreg)
- emit_call_insn (GEN_CALL_VALUE (valreg,
- gen_rtx_MEM (FUNCTION_MODE, funexp),
- rounded_stack_size_rtx, next_arg_reg,
- NULL_RTX));
+ emit_call_insn (GEN_CALL_VALUE (valreg, funmem, rounded_stack_size_rtx,
+ next_arg_reg, NULL_RTX));
else
- emit_call_insn (GEN_CALL (gen_rtx_MEM (FUNCTION_MODE, funexp),
- rounded_stack_size_rtx, next_arg_reg,
- struct_value_size_rtx));
+ emit_call_insn (GEN_CALL (funmem, rounded_stack_size_rtx, next_arg_reg,
+ GEN_INT (struct_value_size)));
}
else
#endif
/* Find the call we just emitted. */
call_insn = last_call_insn ();
+ /* Some target create a fresh MEM instead of reusing the one provided
+ above. Set its MEM_EXPR. */
+ call = PATTERN (call_insn);
+ if (GET_CODE (call) == PARALLEL)
+ call = XVECEXP (call, 0, 0);
+ if (GET_CODE (call) == SET)
+ call = SET_SRC (call);
+ if (GET_CODE (call) == CALL
+ && MEM_P (XEXP (call, 0))
+ && MEM_EXPR (XEXP (call, 0)) == NULL_TREE
+ && MEM_EXPR (funmem) != NULL_TREE)
+ set_mem_expr (XEXP (call, 0), MEM_EXPR (funmem));
+
/* Put the register usage information there. */
add_function_usage_to (call_insn, call_fusage);
if (ecf_flags & ECF_LOOPING_CONST_OR_PURE)
RTL_LOOPING_CONST_OR_PURE_CALL_P (call_insn) = 1;
- /* If this call can't throw, attach a REG_EH_REGION reg note to that
- effect. */
- if (ecf_flags & ECF_NOTHROW)
- add_reg_note (call_insn, REG_EH_REGION, const0_rtx);
- else
- {
- int rn = lookup_expr_eh_region (fntree);
-
- /* If rn < 0, then either (1) tree-ssa not used or (2) doesn't
- throw, which we already took care of. */
- if (rn > 0)
- add_reg_note (call_insn, REG_EH_REGION, GEN_INT (rn));
- }
+ /* Create a nothrow REG_EH_REGION note, if needed. */
+ make_reg_eh_region_note (call_insn, ecf_flags, 0);
if (ecf_flags & ECF_NORETURN)
add_reg_note (call_insn, REG_NORETURN, const0_rtx);
int
setjmp_call_p (const_tree fndecl)
{
+ if (DECL_IS_RETURNS_TWICE (fndecl))
+ return ECF_RETURNS_TWICE;
return special_function_p (fndecl, 0) & ECF_RETURNS_TWICE;
}
flags_from_decl_or_type (const_tree exp)
{
int flags = 0;
- const_tree type = exp;
if (DECL_P (exp))
{
- type = TREE_TYPE (exp);
-
/* The function exp may have the `malloc' attribute. */
if (DECL_IS_MALLOC (exp))
flags |= ECF_MALLOC;
flags |= ECF_RETURNS_TWICE;
/* Process the pure and const attributes. */
- if (TREE_READONLY (exp) && ! TREE_THIS_VOLATILE (exp))
+ if (TREE_READONLY (exp))
flags |= ECF_CONST;
if (DECL_PURE_P (exp))
flags |= ECF_PURE;
if (DECL_IS_NOVOPS (exp))
flags |= ECF_NOVOPS;
+ if (lookup_attribute ("leaf", DECL_ATTRIBUTES (exp)))
+ flags |= ECF_LEAF;
if (TREE_NOTHROW (exp))
flags |= ECF_NOTHROW;
flags = special_function_p (exp, flags);
}
- else if (TYPE_P (exp) && TYPE_READONLY (exp) && ! TREE_THIS_VOLATILE (exp))
+ else if (TYPE_P (exp) && TYPE_READONLY (exp))
flags |= ECF_CONST;
if (TREE_THIS_VOLATILE (exp))
- flags |= ECF_NORETURN;
+ {
+ flags |= ECF_NORETURN;
+ if (flags & (ECF_CONST|ECF_PURE))
+ flags |= ECF_LOOPING_CONST_OR_PURE;
+ }
return flags;
}
pop_temp_slots ();
}
- /* If the value is a non-legitimate constant, force it into a
- pseudo now. TLS symbols sometimes need a call to resolve. */
- if (CONSTANT_P (args[i].value)
- && !LEGITIMATE_CONSTANT_P (args[i].value))
- args[i].value = force_reg (args[i].mode, args[i].value);
-
/* If we are to promote the function arg to a wider mode,
do it now. */
TYPE_MODE (TREE_TYPE (args[i].tree_value)),
args[i].value, args[i].unsignedp);
+ /* If the value is a non-legitimate constant, force it into a
+ pseudo now. TLS symbols sometimes need a call to resolve. */
+ if (CONSTANT_P (args[i].value)
+ && !targetm.legitimate_constant_p (args[i].mode, args[i].value))
+ args[i].value = force_reg (args[i].mode, args[i].value);
+
/* If we're going to have to load the value by parts, pull the
parts into pseudos. The part extraction process can involve
non-trivial computation. */
&& args[i].mode != BLKmode
&& rtx_cost (args[i].value, SET, optimize_insn_for_speed_p ())
> COSTS_N_INSNS (1)
- && ((SMALL_REGISTER_CLASSES && *reg_parm_seen)
+ && ((*reg_parm_seen
+ && targetm.small_register_classes_for_mode_p (args[i].mode))
|| optimize))
args[i].value = copy_to_mode_reg (args[i].mode, args[i].value);
}
int bitsize = MIN (bytes * BITS_PER_UNIT, BITS_PER_WORD);
args[i].aligned_regs[j] = reg;
- word = extract_bit_field (word, bitsize, 0, 1, NULL_RTX,
+ word = extract_bit_field (word, bitsize, 0, 1, false, NULL_RTX,
word_mode, word_mode);
/* There is no need to restrict this code to loading items
}
/* Fill in ARGS_SIZE and ARGS array based on the parameters found in
- CALL_EXPR EXP.
+ CALL_EXPR EXP.
NUM_ACTUALS is the total number of parameters.
int n_named_args ATTRIBUTE_UNUSED,
tree exp, tree struct_value_addr_value,
tree fndecl, tree fntype,
- CUMULATIVE_ARGS *args_so_far,
+ cumulative_args_t args_so_far,
int reg_parm_stack_space,
rtx *old_stack_level, int *old_pending_adj,
int *must_preallocate, int *ecf_flags,
bool *may_tailcall, bool call_from_thunk_p)
{
+ CUMULATIVE_ARGS *args_so_far_pnt = get_cumulative_args (args_so_far);
location_t loc = EXPR_LOCATION (exp);
/* 1 if scanning parms front to back, -1 if scanning back to front. */
int inc;
if (type == error_mark_node || !COMPLETE_TYPE_P (type))
args[i].tree_value = integer_zero_node, type = integer_type_node;
- /* If TYPE is a transparent union, pass things the way we would
- pass the first field of the union. We have already verified that
- the modes are the same. */
- if (TREE_CODE (type) == UNION_TYPE && TYPE_TRANSPARENT_UNION (type))
- type = TREE_TYPE (TYPE_FIELDS (type));
+ /* If TYPE is a transparent union or record, pass things the way
+ we would pass the first field of the union or record. We have
+ already verified that the modes are the same. */
+ if ((TREE_CODE (type) == UNION_TYPE || TREE_CODE (type) == RECORD_TYPE)
+ && TYPE_TRANSPARENT_AGGR (type))
+ type = TREE_TYPE (first_field (type));
/* Decide where to pass this arg.
with those made by function.c. */
/* See if this argument should be passed by invisible reference. */
- if (pass_by_reference (args_so_far, TYPE_MODE (type),
+ if (pass_by_reference (args_so_far_pnt, TYPE_MODE (type),
type, argpos < n_named_args))
{
bool callee_copies;
tree base;
callee_copies
- = reference_callee_copied (args_so_far, TYPE_MODE (type),
+ = reference_callee_copied (args_so_far_pnt, TYPE_MODE (type),
type, argpos < n_named_args);
/* If we're compiling a thunk, pass through invisible references
&& TREE_CODE (base) != SSA_NAME
&& (!DECL_P (base) || MEM_P (DECL_RTL (base)))))
{
+ mark_addressable (args[i].tree_value);
+
/* We can't use sibcalls if a callee-copied argument is
stored in the current function's frame. */
if (!call_from_thunk_p && DECL_P (base) && !TREE_STATIC (base))
if (*old_stack_level == 0)
{
- emit_stack_save (SAVE_BLOCK, old_stack_level, NULL_RTX);
+ emit_stack_save (SAVE_BLOCK, old_stack_level);
*old_pending_adj = pending_stack_adjust;
pending_stack_adjust = 0;
}
- copy = gen_rtx_MEM (BLKmode,
- allocate_dynamic_stack_space
- (size_rtx, NULL_RTX, TYPE_ALIGN (type)));
+ /* We can pass TRUE as the 4th argument because we just
+ saved the stack pointer and will restore it right after
+ the call. */
+ copy = allocate_dynamic_stack_space (size_rtx,
+ TYPE_ALIGN (type),
+ TYPE_ALIGN (type),
+ true);
+ copy = gen_rtx_MEM (BLKmode, copy);
set_mem_attributes (copy, type, 1);
}
else
args[i].unsignedp = unsignedp;
args[i].mode = mode;
- args[i].reg = FUNCTION_ARG (*args_so_far, mode, type,
- argpos < n_named_args);
-#ifdef FUNCTION_INCOMING_ARG
+ args[i].reg = targetm.calls.function_arg (args_so_far, mode, type,
+ argpos < n_named_args);
+
/* If this is a sibling call and the machine has register windows, the
register window has to be unwinded before calling the routine, so
arguments have to go into the incoming registers. */
- args[i].tail_call_reg = FUNCTION_INCOMING_ARG (*args_so_far, mode, type,
- argpos < n_named_args);
-#else
- args[i].tail_call_reg = args[i].reg;
-#endif
+ if (targetm.calls.function_incoming_arg != targetm.calls.function_arg)
+ args[i].tail_call_reg
+ = targetm.calls.function_incoming_arg (args_so_far, mode, type,
+ argpos < n_named_args);
+ else
+ args[i].tail_call_reg = args[i].reg;
if (args[i].reg)
args[i].partial
/* Increment ARGS_SO_FAR, which has info about which arg-registers
have been used, etc. */
- FUNCTION_ARG_ADVANCE (*args_so_far, TYPE_MODE (type), type,
- argpos < n_named_args);
+ targetm.calls.function_arg_advance (args_so_far, TYPE_MODE (type),
+ type, argpos < n_named_args);
}
}
compute and return the final value for MUST_PREALLOCATE. */
static int
-finalize_must_preallocate (int must_preallocate, int num_actuals,
+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.
&& (XEXP (addr, 0) == crtl->args.internal_arg_pointer
|| XEXP (addr, 1) == crtl->args.internal_arg_pointer))
return true;
+ /* If the address comes in a register, we have no idea of its origin so
+ give up and conservatively return true. */
+ else if (REG_P(addr))
+ return true;
else
return false;
call only uses SIZE bytes at the msb end, but it doesn't
seem worth generating rtl to say that. */
reg = gen_rtx_REG (word_mode, REGNO (reg));
- x = expand_shift (LSHIFT_EXPR, word_mode, reg,
- build_int_cst (NULL_TREE, shift),
- reg, 1);
+ x = expand_shift (LSHIFT_EXPR, word_mode, reg, shift, reg, 1);
if (x != reg)
emit_move_insn (reg, x);
}
{
rtx mem = validize_mem (args[i].value);
- /* Check for overlap with already clobbered argument area. */
+ /* Check for overlap with already clobbered argument area,
+ providing that this has non-zero size. */
if (is_sibcall
- && mem_overlaps_already_clobbered_arg_p (XEXP (args[i].value, 0),
- size))
+ && (size == 0
+ || mem_overlaps_already_clobbered_arg_p
+ (XEXP (args[i].value, 0), size)))
*sibcall_failure = 1;
/* Handle a BLKmode that needs shifting. */
: LSHIFT_EXPR;
emit_move_insn (x, tem);
- x = expand_shift (dir, word_mode, x,
- build_int_cst (NULL_TREE, shift),
- ri, 1);
+ x = expand_shift (dir, word_mode, x, shift, ri, 1);
if (x != ri)
emit_move_insn (ri, x);
}
code = GET_CODE (x);
+ /* We need not check the operands of the CALL expression itself. */
+ if (code == CALL)
+ return 0;
+
if (code == MEM)
return mem_overlaps_already_clobbered_arg_p (XEXP (x, 0),
GET_MODE_SIZE (GET_MODE (x)));
if (REG_P (x)
&& HARD_REGISTER_P (x)
- && CLASS_LIKELY_SPILLED_P (REGNO_REG_CLASS (REGNO (x))))
+ && targetm.class_likely_spilled_p (REGNO_REG_CLASS (REGNO (x))))
{
/* Make sure that we generate a REG rather than a CONCAT.
Moves into CONCATs can need nontrivial instructions,
/* Data type of the function. */
tree funtype;
tree type_arg_types;
+ tree rettype;
/* Declaration of the function being called,
or 0 if the function is computed (not known by name). */
tree fndecl = 0;
/* Size of arguments before any adjustments (such as rounding). */
int unadjusted_args_size;
/* Data on reg parms scanned so far. */
- CUMULATIVE_ARGS args_so_far;
+ CUMULATIVE_ARGS args_so_far_v;
+ cumulative_args_t args_so_far;
/* Nonzero if a reg parm has been scanned. */
int reg_parm_seen;
/* Nonzero if this is an indirect function call. */
int old_stack_pointer_delta = 0;
rtx call_fusage;
- tree p = CALL_EXPR_FN (exp);
tree addr = CALL_EXPR_FN (exp);
int i;
/* The alignment of the stack, in bits. */
}
else
{
- fntype = TREE_TYPE (TREE_TYPE (p));
+ fntype = TREE_TYPE (TREE_TYPE (addr));
flags |= flags_from_decl_or_type (fntype);
}
+ rettype = TREE_TYPE (exp);
struct_value = targetm.calls.struct_value_rtx (fntype, 0);
/* Warn if this value is an aggregate type,
regardless of which calling convention we are using for it. */
- if (AGGREGATE_TYPE_P (TREE_TYPE (exp)))
+ if (AGGREGATE_TYPE_P (rettype))
warning (OPT_Waggregate_return, "function call has aggregate value");
/* If the result of a non looping pure or const function call is
if ((flags & (ECF_CONST | ECF_PURE))
&& (!(flags & ECF_LOOPING_CONST_OR_PURE))
&& (ignore || target == const0_rtx
- || TYPE_MODE (TREE_TYPE (exp)) == VOIDmode))
+ || TYPE_MODE (rettype) == VOIDmode))
{
bool volatilep = false;
tree arg;
/* Set up a place to return a structure. */
/* Cater to broken compilers. */
- if (aggregate_value_p (exp, (!fndecl ? fntype : fndecl)))
+ if (aggregate_value_p (exp, fntype))
{
/* This call returns a big structure. */
flags &= ~(ECF_CONST | ECF_PURE | ECF_LOOPING_CONST_OR_PURE);
}
#else /* not PCC_STATIC_STRUCT_RETURN */
{
- struct_value_size = int_size_in_bytes (TREE_TYPE (exp));
+ struct_value_size = int_size_in_bytes (rettype);
if (target && MEM_P (target) && CALL_EXPR_RETURN_SLOT_OPT (exp))
structure_value_addr = XEXP (target, 0);
/* For variable-sized objects, we must be called with a target
specified. If we were to allocate space on the stack here,
we would have no way of knowing when to free it. */
- rtx d = assign_temp (TREE_TYPE (exp), 0, 1, 1);
+ rtx d = assign_temp (rettype, 0, 1, 1);
mark_temp_addr_taken (d);
structure_value_addr = XEXP (d, 0);
calling convention than normal calls. The fourth argument in
INIT_CUMULATIVE_ARGS tells the backend if this is an indirect call
or not. */
- INIT_CUMULATIVE_ARGS (args_so_far, funtype, NULL_RTX, fndecl, n_named_args);
+ INIT_CUMULATIVE_ARGS (args_so_far_v, funtype, NULL_RTX, fndecl, n_named_args);
+ args_so_far = pack_cumulative_args (&args_so_far_v);
/* Now possibly adjust the number of named args.
Normally, don't include the last named arg if anonymous args follow.
registers, so we must force them into memory. */
if (type_arg_types != 0
- && targetm.calls.strict_argument_naming (&args_so_far))
+ && targetm.calls.strict_argument_naming (args_so_far))
;
else if (type_arg_types != 0
- && ! targetm.calls.pretend_outgoing_varargs_named (&args_so_far))
+ && ! targetm.calls.pretend_outgoing_varargs_named (args_so_far))
/* Don't include the last named arg. */
--n_named_args;
else
initialize_argument_information (num_actuals, args, &args_size,
n_named_args, exp,
structure_value_addr_value, fndecl, fntype,
- &args_so_far, reg_parm_stack_space,
+ args_so_far, reg_parm_stack_space,
&old_stack_level, &old_pending_adj,
&must_preallocate, &flags,
&try_tail_call, CALL_FROM_THUNK_P (exp));
if (currently_expanding_call++ != 0
|| !flag_optimize_sibling_calls
|| args_size.var
- || lookup_expr_eh_region (exp) >= 0
|| dbg_cnt (tail_call) == false)
try_tail_call = 0;
- crtl->args.pretend_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),
- crtl->args.size))
+ || (targetm.calls.return_pops_args (fndecl, funtype, args_size.constant)
+ != targetm.calls.return_pops_args (current_function_decl,
+ TREE_TYPE (current_function_decl),
+ crtl->args.size))
|| !lang_hooks.decls.ok_for_sibcall (fndecl))
try_tail_call = 0;
&caller_unsignedp,
TREE_TYPE (current_function_decl), 1);
callee_promoted_mode
- = promote_function_mode (TREE_TYPE (caller_res), callee_mode,
+ = promote_function_mode (TREE_TYPE (funtype), callee_mode,
&callee_unsignedp,
- TREE_TYPE (funtype), 1);
+ funtype, 1);
if (caller_mode != VOIDmode
&& (caller_promoted_mode != callee_promoted_mode
|| ((caller_mode != caller_promoted_mode
{
if (old_stack_level == 0)
{
- emit_stack_save (SAVE_BLOCK, &old_stack_level, NULL_RTX);
+ emit_stack_save (SAVE_BLOCK, &old_stack_level);
old_stack_pointer_delta = stack_pointer_delta;
old_pending_adj = pending_stack_adjust;
pending_stack_adjust = 0;
stack_arg_under_construction = 0;
}
argblock = push_block (ARGS_SIZE_RTX (adjusted_args_size), 0, 0);
+ if (flag_stack_usage_info)
+ current_function_has_unbounded_dynamic_stack_size = 1;
}
else
{
highest_outgoing_arg_in_use = MAX (initial_highest_arg_in_use,
needed);
#endif
- if (stack_usage_map_buf)
- free (stack_usage_map_buf);
+ free (stack_usage_map_buf);
stack_usage_map_buf = XNEWVEC (char, highest_outgoing_arg_in_use);
stack_usage_map = stack_usage_map_buf;
: reg_parm_stack_space));
if (old_stack_level == 0)
{
- emit_stack_save (SAVE_BLOCK, &old_stack_level,
- NULL_RTX);
+ emit_stack_save (SAVE_BLOCK, &old_stack_level);
old_stack_pointer_delta = stack_pointer_delta;
old_pending_adj = pending_stack_adjust;
pending_stack_adjust = 0;
= stack_arg_under_construction;
stack_arg_under_construction = 0;
/* Make a new map for the new argument list. */
- if (stack_usage_map_buf)
- free (stack_usage_map_buf);
+ free (stack_usage_map_buf);
stack_usage_map_buf = XCNEWVEC (char, highest_outgoing_arg_in_use);
stack_usage_map = stack_usage_map_buf;
highest_outgoing_arg_in_use = 0;
}
- allocate_dynamic_stack_space (push_size, NULL_RTX,
- BITS_PER_UNIT);
+ /* We can pass TRUE as the 4th argument because we just
+ saved the stack pointer and will restore it right after
+ the call. */
+ allocate_dynamic_stack_space (push_size, 0,
+ BIGGEST_ALIGNMENT, true);
}
/* If argument evaluation might modify the stack pointer,
be deferred during the evaluation of the arguments. */
NO_DEFER_POP;
+ /* Record the maximum pushed stack space size. We need to delay
+ doing it this far to take into account the optimization done
+ by combine_pending_stack_adjustment_and_call. */
+ if (flag_stack_usage_info
+ && !ACCUMULATE_OUTGOING_ARGS
+ && pass
+ && adjusted_args_size.var == 0)
+ {
+ int pushed = adjusted_args_size.constant + pending_stack_adjust;
+ if (pushed > current_function_pushed_stack_size)
+ current_function_pushed_stack_size = pushed;
+ }
+
funexp = rtx_for_function_call (fndecl, addr);
/* Figure out the register where the value, if any, will come back. */
valreg = 0;
- if (TYPE_MODE (TREE_TYPE (exp)) != VOIDmode
+ if (TYPE_MODE (rettype) != VOIDmode
&& ! structure_value_addr)
{
if (pcc_struct_value)
- valreg = hard_function_value (build_pointer_type (TREE_TYPE (exp)),
+ valreg = hard_function_value (build_pointer_type (rettype),
fndecl, NULL, (pass == 0));
else
- valreg = hard_function_value (TREE_TYPE (exp), fndecl, fntype,
+ valreg = hard_function_value (rettype, fndecl, fntype,
(pass == 0));
/* If VALREG is a PARALLEL whose first member has a zero
sibcall_failure = 1;
}
- if (((flags & ECF_CONST)
- || ((flags & ECF_PURE) && ACCUMULATE_OUTGOING_ARGS))
- && args[i].stack)
+ if (args[i].stack)
call_fusage = gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_USE (VOIDmode,
args[i].stack),
}
after_args = get_last_insn ();
- funexp = prepare_call_address (funexp, static_chain_value,
+ funexp = prepare_call_address (fndecl, funexp, static_chain_value,
&call_fusage, reg_parm_seen, pass == 0);
load_register_parameters (args, num_actuals, &call_fusage, flags,
/* Set up next argument register. For sibling calls on machines
with register windows this should be the incoming register. */
-#ifdef FUNCTION_INCOMING_ARG
if (pass == 0)
- next_arg_reg = FUNCTION_INCOMING_ARG (args_so_far, VOIDmode,
- void_type_node, 1);
+ next_arg_reg = targetm.calls.function_incoming_arg (args_so_far,
+ VOIDmode,
+ void_type_node,
+ true);
else
-#endif
- next_arg_reg = FUNCTION_ARG (args_so_far, VOIDmode,
- void_type_node, 1);
+ next_arg_reg = targetm.calls.function_arg (args_so_far,
+ VOIDmode, void_type_node,
+ true);
/* All arguments and registers used for the call must be set up by
now! */
emit_call_1 (funexp, exp, fndecl, funtype, unadjusted_args_size,
adjusted_args_size.constant, struct_value_size,
next_arg_reg, valreg, old_inhibit_defer_pop, call_fusage,
- flags, & args_so_far);
+ flags, args_so_far);
/* If the call setup or the call itself overlaps with anything
of the argument setup we probably clobbered our call address.
group load/store machinery below. */
if (!structure_value_addr
&& !pcc_struct_value
- && TYPE_MODE (TREE_TYPE (exp)) != BLKmode
- && targetm.calls.return_in_msb (TREE_TYPE (exp)))
+ && TYPE_MODE (rettype) != BLKmode
+ && targetm.calls.return_in_msb (rettype))
{
- if (shift_return_value (TYPE_MODE (TREE_TYPE (exp)), false, valreg))
+ if (shift_return_value (TYPE_MODE (rettype), false, valreg))
sibcall_failure = 1;
- valreg = gen_rtx_REG (TYPE_MODE (TREE_TYPE (exp)), REGNO (valreg));
+ valreg = gen_rtx_REG (TYPE_MODE (rettype), REGNO (valreg));
}
if (pass && (flags & ECF_MALLOC))
rtx last, insns;
/* The return value from a malloc-like function is a pointer. */
- if (TREE_CODE (TREE_TYPE (exp)) == POINTER_TYPE)
+ if (TREE_CODE (rettype) == POINTER_TYPE)
mark_reg_pointer (temp, BIGGEST_ALIGNMENT);
emit_move_insn (temp, valreg);
/* If value type not void, return an rtx for the value. */
- if (TYPE_MODE (TREE_TYPE (exp)) == VOIDmode
+ if (TYPE_MODE (rettype) == VOIDmode
|| ignore)
target = const0_rtx;
else if (structure_value_addr)
if (target == 0 || !MEM_P (target))
{
target
- = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (exp)),
- memory_address (TYPE_MODE (TREE_TYPE (exp)),
+ = gen_rtx_MEM (TYPE_MODE (rettype),
+ memory_address (TYPE_MODE (rettype),
structure_value_addr));
- set_mem_attributes (target, exp, 1);
+ set_mem_attributes (target, rettype, 1);
}
}
else if (pcc_struct_value)
/* This is the special C++ case where we need to
know what the true target was. We take care to
never use this value more than once in one expression. */
- target = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (exp)),
+ target = gen_rtx_MEM (TYPE_MODE (rettype),
copy_to_reg (valreg));
- set_mem_attributes (target, exp, 1);
+ set_mem_attributes (target, rettype, 1);
}
/* Handle calls that return values in multiple non-contiguous locations.
The Irix 6 ABI has examples of this. */
if (target == 0)
{
/* This will only be assigned once, so it can be readonly. */
- tree nt = build_qualified_type (TREE_TYPE (exp),
- (TYPE_QUALS (TREE_TYPE (exp))
+ tree nt = build_qualified_type (rettype,
+ (TYPE_QUALS (rettype)
| TYPE_QUAL_CONST));
target = assign_temp (nt, 0, 1, 1);
}
if (! rtx_equal_p (target, valreg))
- emit_group_store (target, valreg, TREE_TYPE (exp),
- int_size_in_bytes (TREE_TYPE (exp)));
+ emit_group_store (target, valreg, rettype,
+ int_size_in_bytes (rettype));
/* We can not support sibling calls for this case. */
sibcall_failure = 1;
}
else if (target
- && GET_MODE (target) == TYPE_MODE (TREE_TYPE (exp))
+ && GET_MODE (target) == TYPE_MODE (rettype)
&& GET_MODE (target) == GET_MODE (valreg))
{
bool may_overlap = false;
sibcall_failure = 1;
}
}
- else if (TYPE_MODE (TREE_TYPE (exp)) == BLKmode)
+ else if (TYPE_MODE (rettype) == BLKmode)
{
- target = copy_blkmode_from_reg (target, valreg, TREE_TYPE (exp));
+ rtx val = valreg;
+ if (GET_MODE (val) != BLKmode)
+ val = avoid_likely_spilled_reg (val);
+ target = copy_blkmode_from_reg (target, val, rettype);
/* We can not support sibling calls for this case. */
sibcall_failure = 1;
/* If we promoted this return value, make the proper SUBREG.
TARGET might be const0_rtx here, so be careful. */
if (REG_P (target)
- && TYPE_MODE (TREE_TYPE (exp)) != BLKmode
- && GET_MODE (target) != TYPE_MODE (TREE_TYPE (exp)))
+ && TYPE_MODE (rettype) != BLKmode
+ && GET_MODE (target) != TYPE_MODE (rettype))
{
- tree type = TREE_TYPE (exp);
+ tree type = rettype;
int unsignedp = TYPE_UNSIGNED (type);
int offset = 0;
enum machine_mode pmode;
if (old_stack_level)
{
- emit_stack_restore (SAVE_BLOCK, old_stack_level, NULL_RTX);
+ emit_stack_restore (SAVE_BLOCK, old_stack_level);
stack_pointer_delta = old_stack_pointer_delta;
pending_stack_adjust = old_pending_adj;
old_stack_allocated = stack_pointer_delta - pending_stack_adjust;
/* Free up storage we no longer need. */
for (i = 0; i < num_actuals; ++i)
- if (args[i].aligned_regs)
- free (args[i].aligned_regs);
+ free (args[i].aligned_regs);
insns = get_insns ();
end_sequence ();
currently_expanding_call--;
- if (stack_usage_map_buf)
- free (stack_usage_map_buf);
+ free (stack_usage_map_buf);
return target;
}
int inc;
int count;
rtx argblock = 0;
- CUMULATIVE_ARGS args_so_far;
+ CUMULATIVE_ARGS args_so_far_v;
+ cumulative_args_t args_so_far;
struct arg
{
rtx value;
memset (argvec, 0, (nargs + 1) * sizeof (struct arg));
#ifdef INIT_CUMULATIVE_LIBCALL_ARGS
- INIT_CUMULATIVE_LIBCALL_ARGS (args_so_far, outmode, fun);
+ INIT_CUMULATIVE_LIBCALL_ARGS (args_so_far_v, outmode, fun);
#else
- INIT_CUMULATIVE_ARGS (args_so_far, NULL_TREE, fun, 0, nargs);
+ INIT_CUMULATIVE_ARGS (args_so_far_v, NULL_TREE, fun, 0, nargs);
#endif
+ args_so_far = pack_cumulative_args (&args_so_far_v);
args_size.constant = 0;
args_size.var = 0;
/* Make sure it is a reasonable operand for a move or push insn. */
if (!REG_P (addr) && !MEM_P (addr)
- && ! (CONSTANT_P (addr) && LEGITIMATE_CONSTANT_P (addr)))
+ && !(CONSTANT_P (addr)
+ && targetm.legitimate_constant_p (Pmode, addr)))
addr = force_operand (addr, NULL_RTX);
argvec[count].value = addr;
argvec[count].mode = Pmode;
argvec[count].partial = 0;
- argvec[count].reg = FUNCTION_ARG (args_so_far, Pmode, NULL_TREE, 1);
- gcc_assert (targetm.calls.arg_partial_bytes (&args_so_far, Pmode,
+ argvec[count].reg = targetm.calls.function_arg (args_so_far,
+ Pmode, NULL_TREE, true);
+ gcc_assert (targetm.calls.arg_partial_bytes (args_so_far, Pmode,
NULL_TREE, 1) == 0);
locate_and_pad_parm (Pmode, NULL_TREE,
|| reg_parm_stack_space > 0)
args_size.constant += argvec[count].locate.size.constant;
- FUNCTION_ARG_ADVANCE (args_so_far, Pmode, (tree) 0, 1);
+ targetm.calls.function_arg_advance (args_so_far, Pmode, (tree) 0, true);
count++;
}
{
rtx val = va_arg (p, rtx);
enum machine_mode mode = (enum machine_mode) va_arg (p, int);
+ int unsigned_p = 0;
/* We cannot convert the arg value to the mode the library wants here;
must do it earlier where we know the signedness of the arg. */
/* Make sure it is a reasonable operand for a move or push insn. */
if (!REG_P (val) && !MEM_P (val)
- && ! (CONSTANT_P (val) && LEGITIMATE_CONSTANT_P (val)))
+ && !(CONSTANT_P (val) && targetm.legitimate_constant_p (mode, val)))
val = force_operand (val, NULL_RTX);
- if (pass_by_reference (&args_so_far, mode, NULL_TREE, 1))
+ if (pass_by_reference (&args_so_far_v, mode, NULL_TREE, 1))
{
rtx slot;
int must_copy
- = !reference_callee_copied (&args_so_far, mode, NULL_TREE, 1);
+ = !reference_callee_copied (&args_so_far_v, mode, NULL_TREE, 1);
/* If this was a CONST function, it is now PURE since it now
reads memory. */
}
if (MEM_P (val) && !must_copy)
- slot = val;
+ {
+ tree val_expr = MEM_EXPR (val);
+ if (val_expr)
+ mark_addressable (val_expr);
+ slot = val;
+ }
else
{
slot = assign_temp (lang_hooks.types.type_for_mode (mode, 0),
val = force_operand (XEXP (slot, 0), NULL_RTX);
}
- argvec[count].value = val;
+ mode = promote_function_mode (NULL_TREE, mode, &unsigned_p, NULL_TREE, 0);
argvec[count].mode = mode;
-
- argvec[count].reg = FUNCTION_ARG (args_so_far, mode, NULL_TREE, 1);
+ argvec[count].value = convert_modes (mode, GET_MODE (val), val, unsigned_p);
+ argvec[count].reg = targetm.calls.function_arg (args_so_far, mode,
+ NULL_TREE, true);
argvec[count].partial
- = targetm.calls.arg_partial_bytes (&args_so_far, mode, NULL_TREE, 1);
+ = targetm.calls.arg_partial_bytes (args_so_far, mode, NULL_TREE, 1);
locate_and_pad_parm (mode, NULL_TREE,
#ifdef STACK_PARMS_IN_REG_PARM_AREA
|| reg_parm_stack_space > 0)
args_size.constant += argvec[count].locate.size.constant;
- FUNCTION_ARG_ADVANCE (args_so_far, mode, (tree) 0, 1);
+ targetm.calls.function_arg_advance (args_so_far, mode, (tree) 0, true);
}
/* If this machine requires an external definition for library
if (args_size.constant > crtl->outgoing_args_size)
crtl->outgoing_args_size = args_size.constant;
+ if (flag_stack_usage_info && !ACCUMULATE_OUTGOING_ARGS)
+ {
+ int pushed = args_size.constant + pending_stack_adjust;
+ if (pushed > current_function_pushed_stack_size)
+ current_function_pushed_stack_size = pushed;
+ }
+
if (ACCUMULATE_OUTGOING_ARGS)
{
/* Since the stack pointer will never be pushed, it is possible for
if (! (reg != 0 && partial == 0))
{
+ rtx use;
+
if (ACCUMULATE_OUTGOING_ARGS)
{
/* If this is being stored into a pre-allocated, fixed-size,
NO_DEFER_POP;
- if ((flags & ECF_CONST)
- || ((flags & ECF_PURE) && ACCUMULATE_OUTGOING_ARGS))
- {
- rtx use;
-
- /* Indicate argument access so that alias.c knows that these
- values are live. */
- if (argblock)
- use = plus_constant (argblock,
- argvec[argnum].locate.offset.constant);
- else
- /* When arguments are pushed, trying to tell alias.c where
- exactly this argument is won't work, because the
- auto-increment causes confusion. So we merely indicate
- that we access something with a known mode somewhere on
- the stack. */
- use = gen_rtx_PLUS (Pmode, virtual_outgoing_args_rtx,
- gen_rtx_SCRATCH (Pmode));
- use = gen_rtx_MEM (argvec[argnum].mode, use);
- use = gen_rtx_USE (VOIDmode, use);
- call_fusage = gen_rtx_EXPR_LIST (VOIDmode, use, call_fusage);
- }
+ /* Indicate argument access so that alias.c knows that these
+ values are live. */
+ if (argblock)
+ use = plus_constant (argblock,
+ argvec[argnum].locate.offset.constant);
+ else
+ /* When arguments are pushed, trying to tell alias.c where
+ exactly this argument is won't work, because the
+ auto-increment causes confusion. So we merely indicate
+ that we access something with a known mode somewhere on
+ the stack. */
+ use = gen_rtx_PLUS (Pmode, virtual_outgoing_args_rtx,
+ gen_rtx_SCRATCH (Pmode));
+ use = gen_rtx_MEM (argvec[argnum].mode, use);
+ use = gen_rtx_USE (VOIDmode, use);
+ call_fusage = gen_rtx_EXPR_LIST (VOIDmode, use, call_fusage);
}
}
else
argnum = 0;
- fun = prepare_call_address (fun, NULL, &call_fusage, 0, 0);
+ fun = prepare_call_address (NULL, fun, NULL, &call_fusage, 0, 0);
/* Now load any reg parms into their regs. */
cse'ing of library calls could delete a call and leave the pop. */
NO_DEFER_POP;
valreg = (mem_value == 0 && outmode != VOIDmode
- ? hard_libcall_value (outmode) : NULL_RTX);
+ ? hard_libcall_value (outmode, orgfun) : NULL_RTX);
/* Stack must be properly aligned now. */
gcc_assert (!(stack_pointer_delta
build_function_type (tfom, NULL_TREE),
original_args_size.constant, args_size.constant,
struct_value_size,
- FUNCTION_ARG (args_so_far, VOIDmode, void_type_node, 1),
+ targetm.calls.function_arg (args_so_far,
+ VOIDmode, void_type_node, true),
valreg,
- old_inhibit_defer_pop + 1, call_fusage, flags, & args_so_far);
+ old_inhibit_defer_pop + 1, call_fusage, flags, args_so_far);
/* For calls to `setjmp', etc., inform function.c:setjmp_warnings
that it should complain if nonvolatile values are live. For
stack_usage_map = initial_stack_usage_map;
}
- if (stack_usage_map_buf)
- free (stack_usage_map_buf);
+ free (stack_usage_map_buf);
return value;
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