#include "target.h"
#include "target-def.h"
#include "langhooks.h"
+#include "tree-gimple.h"
+
/* Enumeration for all of the relational tests, so that we can build
arrays indexed by the test type, and not worry about the order
static bool xtensa_rtx_costs (rtx, int, int, int *);
static tree xtensa_build_builtin_va_list (void);
static bool xtensa_return_in_memory (tree, tree);
+static tree xtensa_gimplify_va_arg_expr (tree, tree, tree *, tree *);
static const int reg_nonleaf_alloc_order[FIRST_PSEUDO_REGISTER] =
REG_ALLOC_ORDER;
#undef TARGET_EXPAND_BUILTIN_SAVEREGS
#define TARGET_EXPAND_BUILTIN_SAVEREGS xtensa_builtin_saveregs
+#undef TARGET_GIMPLIFY_VA_ARG_EXPR
+#define TARGET_GIMPLIFY_VA_ARG_EXPR xtensa_gimplify_va_arg_expr
#undef TARGET_RETURN_IN_MSB
#define TARGET_RETURN_IN_MSB xtensa_return_in_msb
/* Implement `va_arg'. */
-rtx
-xtensa_va_arg (tree valist, tree type)
+static tree
+xtensa_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p,
+ tree *post_p ATTRIBUTE_UNUSED)
{
tree f_stk, stk;
tree f_reg, reg;
tree f_ndx, ndx;
- tree tmp, addr_tree, type_size;
- rtx array, orig_ndx, r, addr, size, va_size;
- rtx lab_false, lab_over, lab_false2;
+ tree type_size, array, orig_ndx, addr, size, va_size, t;
+ tree lab_false, lab_over, lab_false2;
/* Handle complex values as separate real and imaginary parts. */
if (TREE_CODE (type) == COMPLEX_TYPE)
{
- rtx real_part, imag_part, concat_val, local_copy;
+ tree real_part, imag_part;
- real_part = xtensa_va_arg (valist, TREE_TYPE (type));
- imag_part = xtensa_va_arg (valist, TREE_TYPE (type));
+ real_part = xtensa_gimplify_va_arg_expr (valist, TREE_TYPE (type),
+ pre_p, NULL);
+ real_part = get_initialized_tmp_var (real_part, pre_p, NULL);
- /* Make a copy of the value in case the parts are not contiguous. */
- real_part = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (type)), real_part);
- imag_part = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (type)), imag_part);
- concat_val = gen_rtx_CONCAT (TYPE_MODE (type), real_part, imag_part);
+ imag_part = xtensa_gimplify_va_arg_expr (valist, TREE_TYPE (type),
+ pre_p, NULL);
+ imag_part = get_initialized_tmp_var (imag_part, pre_p, NULL);
- local_copy = assign_temp (type, 0, 1, 0);
- emit_move_insn (local_copy, concat_val);
-
- return XEXP (local_copy, 0);
+ return build (COMPLEX_EXPR, type, real_part, imag_part);
}
f_stk = TYPE_FIELDS (va_list_type_node);
reg = build (COMPONENT_REF, TREE_TYPE (f_reg), valist, f_reg, NULL_TREE);
ndx = build (COMPONENT_REF, TREE_TYPE (f_ndx), valist, f_ndx, NULL_TREE);
- type_size = TYPE_SIZE_UNIT (TYPE_MAIN_VARIANT (type));
-
- va_size = gen_reg_rtx (SImode);
- tmp = fold (build (MULT_EXPR, sizetype,
- fold (build (TRUNC_DIV_EXPR, sizetype,
- fold (build (PLUS_EXPR, sizetype,
- type_size,
- size_int (UNITS_PER_WORD - 1))),
- size_int (UNITS_PER_WORD))),
- size_int (UNITS_PER_WORD)));
- r = expand_expr (tmp, va_size, SImode, EXPAND_NORMAL);
- if (r != va_size)
- emit_move_insn (va_size, r);
+ type_size = size_in_bytes (type);
+ va_size = round_up (type_size, UNITS_PER_WORD);
+ gimplify_expr (&va_size, pre_p, NULL, is_gimple_val, fb_rvalue);
/* First align __va_ndx if necessary for this arg:
+ orig_ndx = (AP).__va_ndx;
if (__alignof__ (TYPE) > 4 )
- (AP).__va_ndx = (((AP).__va_ndx + __alignof__ (TYPE) - 1)
+ orig_ndx = ((orig_ndx + __alignof__ (TYPE) - 1)
& -__alignof__ (TYPE)); */
+ orig_ndx = get_initialized_tmp_var (ndx, pre_p, NULL);
+
if (TYPE_ALIGN (type) > BITS_PER_WORD)
{
int align = TYPE_ALIGN (type) / BITS_PER_UNIT;
- tmp = build (PLUS_EXPR, integer_type_node, ndx,
- build_int_2 (align - 1, 0));
- tmp = build (BIT_AND_EXPR, integer_type_node, tmp,
- build_int_2 (-align, -1));
- tmp = build (MODIFY_EXPR, integer_type_node, ndx, tmp);
- TREE_SIDE_EFFECTS (tmp) = 1;
- expand_expr (tmp, const0_rtx, VOIDmode, EXPAND_NORMAL);
+
+ t = build (PLUS_EXPR, integer_type_node, orig_ndx,
+ build_int_2 (align - 1, 0));
+ t = build (BIT_AND_EXPR, integer_type_node, t,
+ build_int_2 (-align, -1));
+ t = build (MODIFY_EXPR, integer_type_node, orig_ndx, t);
+ gimplify_and_add (t, pre_p);
}
/* Increment __va_ndx to point past the argument:
- orig_ndx = (AP).__va_ndx;
- (AP).__va_ndx += __va_size (TYPE); */
-
- orig_ndx = gen_reg_rtx (SImode);
- r = expand_expr (ndx, orig_ndx, SImode, EXPAND_NORMAL);
- if (r != orig_ndx)
- emit_move_insn (orig_ndx, r);
+ (AP).__va_ndx = orig_ndx + __va_size (TYPE); */
- tmp = build (PLUS_EXPR, integer_type_node, ndx,
- make_tree (intSI_type_node, va_size));
- tmp = build (MODIFY_EXPR, integer_type_node, ndx, tmp);
- TREE_SIDE_EFFECTS (tmp) = 1;
- expand_expr (tmp, const0_rtx, VOIDmode, EXPAND_NORMAL);
+ t = fold_convert (integer_type_node, va_size);
+ t = build (PLUS_EXPR, integer_type_node, orig_ndx, t);
+ t = build (MODIFY_EXPR, integer_type_node, ndx, t);
+ gimplify_and_add (t, pre_p);
/* Check if the argument is in registers:
&& !MUST_PASS_IN_STACK (type))
__array = (AP).__va_reg; */
- array = gen_reg_rtx (Pmode);
+ array = create_tmp_var (ptr_type_node, NULL);
- lab_over = NULL_RTX;
+ lab_over = NULL;
if (!MUST_PASS_IN_STACK (VOIDmode, type))
{
- lab_false = gen_label_rtx ();
- lab_over = gen_label_rtx ();
-
- emit_cmp_and_jump_insns (expand_expr (ndx, NULL_RTX, SImode,
- EXPAND_NORMAL),
- GEN_INT (MAX_ARGS_IN_REGISTERS
- * UNITS_PER_WORD),
- GT, const1_rtx, SImode, 0, lab_false);
-
- r = expand_expr (reg, array, Pmode, EXPAND_NORMAL);
- if (r != array)
- emit_move_insn (array, r);
-
- emit_jump_insn (gen_jump (lab_over));
- emit_barrier ();
- emit_label (lab_false);
+ lab_false = create_artificial_label ();
+ lab_over = create_artificial_label ();
+
+ t = build_int_2 (MAX_ARGS_IN_REGISTERS * UNITS_PER_WORD, 0);
+ t = build (GT_EXPR, boolean_type_node, ndx, t);
+ t = build (COND_EXPR, void_type_node, t,
+ build (GOTO_EXPR, void_type_node, lab_false),
+ NULL);
+ gimplify_and_add (t, pre_p);
+
+ t = build (MODIFY_EXPR, void_type_node, array, reg);
+ gimplify_and_add (t, pre_p);
+
+ t = build (GOTO_EXPR, void_type_node, lab_over);
+ gimplify_and_add (t, pre_p);
+
+ t = build (LABEL_EXPR, void_type_node, lab_false);
+ gimplify_and_add (t, pre_p);
}
+
/* ...otherwise, the argument is on the stack (never split between
registers and the stack -- change __va_ndx if necessary):
__array = (AP).__va_stk;
} */
- lab_false2 = gen_label_rtx ();
- emit_cmp_and_jump_insns (orig_ndx,
- GEN_INT (MAX_ARGS_IN_REGISTERS * UNITS_PER_WORD),
- GT, const1_rtx, SImode, 0, lab_false2);
+ lab_false2 = create_artificial_label ();
- tmp = build (PLUS_EXPR, sizetype, make_tree (intSI_type_node, va_size),
- build_int_2 (32, 0));
- tmp = build (MODIFY_EXPR, integer_type_node, ndx, tmp);
- TREE_SIDE_EFFECTS (tmp) = 1;
- expand_expr (tmp, const0_rtx, VOIDmode, EXPAND_NORMAL);
+ t = build_int_2 (MAX_ARGS_IN_REGISTERS * UNITS_PER_WORD, 0);
+ t = build (GT_EXPR, boolean_type_node, orig_ndx, t);
+ t = build (COND_EXPR, void_type_node, t,
+ build (GOTO_EXPR, void_type_node, lab_false2),
+ NULL);
+ gimplify_and_add (t, pre_p);
- emit_label (lab_false2);
+ t = size_binop (PLUS_EXPR, va_size, size_int (32));
+ t = fold_convert (integer_type_node, t);
+ t = build (MODIFY_EXPR, integer_type_node, ndx, t);
+ gimplify_and_add (t, pre_p);
- r = expand_expr (stk, array, Pmode, EXPAND_NORMAL);
- if (r != array)
- emit_move_insn (array, r);
+ t = build (LABEL_EXPR, void_type_node, lab_false2);
+ gimplify_and_add (t, pre_p);
- if (lab_over != NULL_RTX)
- emit_label (lab_over);
+ t = build (MODIFY_EXPR, void_type_node, array, stk);
+ gimplify_and_add (t, pre_p);
+
+ if (lab_over)
+ {
+ t = build (LABEL_EXPR, void_type_node, lab_over);
+ gimplify_and_add (t, pre_p);
+ }
/* Given the base array pointer (__array) and index to the subsequent
The results are endian-dependent because values smaller than one word
are aligned differently. */
- size = gen_reg_rtx (SImode);
- emit_move_insn (size, va_size);
if (BYTES_BIG_ENDIAN)
{
- rtx lab_use_va_size = gen_label_rtx ();
-
- emit_cmp_and_jump_insns (expand_expr (type_size, NULL_RTX, SImode,
- EXPAND_NORMAL),
- GEN_INT (PARM_BOUNDARY / BITS_PER_UNIT),
- GE, const1_rtx, SImode, 0, lab_use_va_size);
-
- r = expand_expr (type_size, size, SImode, EXPAND_NORMAL);
- if (r != size)
- emit_move_insn (size, r);
-
- emit_label (lab_use_va_size);
+ t = size_int (PARM_BOUNDARY / BITS_PER_UNIT);
+ t = fold (build (GE_EXPR, boolean_type_node, type_size, t));
+ t = fold (build (COND_EXPR, sizetype, t, type_size, va_size));
+ size = t;
}
+ else
+ size = va_size;
+
+ t = fold_convert (ptr_type_node, ndx);
+ addr = build (PLUS_EXPR, ptr_type_node, array, t);
+ t = fold_convert (ptr_type_node, size);
+ addr = build (MINUS_EXPR, ptr_type_node, addr, t);
- addr_tree = build (PLUS_EXPR, ptr_type_node,
- make_tree (ptr_type_node, array),
- ndx);
- addr_tree = build (MINUS_EXPR, ptr_type_node, addr_tree,
- make_tree (intSI_type_node, size));
- addr = expand_expr (addr_tree, NULL_RTX, Pmode, EXPAND_NORMAL);
- addr = copy_to_reg (addr);
- return addr;
+ addr = fold_convert (build_pointer_type (type), addr);
+ return build_fold_indirect_ref (addr);
}
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