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mmix-protos.h (mmix_expand_builtin_va_arg): Remove.
* config/mmix/mmix-protos.h (mmix_expand_builtin_va_arg): Remove.
* config/mmix/mmix.c (TARGET_GIMPLIFY_VA_ARG_EXPR): New.
(mmix_gimplify_va_arg_expr): Rewrite from mmix_expand_builtin_va_arg.
* config/mmix/mmix.h (EXPAND_BUILTIN_VA_ARG): Remove.
(FRAME_POINTER_REQUIRED): Use current_function_has_nonlocal_label.
From-SVN: r84336
This commit is contained in:
Richard Henderson
Richard Henderson
parent
4e15608a31
commit
9d6bb56678
@ -1,5 +1,11 @@
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2004-07-08 Richard Henderson <rth@redhat.com>
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* config/mmix/mmix-protos.h (mmix_expand_builtin_va_arg): Remove.
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* config/mmix/mmix.c (TARGET_GIMPLIFY_VA_ARG_EXPR): New.
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(mmix_gimplify_va_arg_expr): Rewrite from mmix_expand_builtin_va_arg.
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* config/mmix/mmix.h (EXPAND_BUILTIN_VA_ARG): Remove.
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(FRAME_POINTER_REQUIRED): Use current_function_has_nonlocal_label.
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* config/m32r/m32r-protos.h (m32r_va_arg): Remove.
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* config/m32r/m32r.c (TARGET_GIMPLIFY_VA_ARG_EXPR): New.
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(m32r_gimplify_va_arg_expr): Rewrite from m32r_va_arg.
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@ -67,7 +67,6 @@ extern void mmix_asm_declare_register_global
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(FILE *, tree, int, const char *);
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extern rtx mmix_function_arg
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(const CUMULATIVE_ARGS *, enum machine_mode, tree, int, int);
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extern rtx mmix_expand_builtin_va_arg (tree, tree);
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extern void mmix_asm_output_addr_diff_elt (FILE *, rtx, int, int);
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extern void mmix_asm_output_addr_vec_elt (FILE *, int);
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extern enum reg_class mmix_preferred_reload_class (rtx, enum reg_class);
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@ -139,6 +139,7 @@ static void mmix_file_start (void);
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static void mmix_file_end (void);
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static bool mmix_rtx_costs (rtx, int, int, int *);
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static rtx mmix_struct_value_rtx (tree, int);
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static tree mmix_gimplify_va_arg_expr (tree, tree, tree *, tree *);
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/* Target structure macros. Listed by node. See `Using and Porting GCC'
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@ -204,6 +205,8 @@ static rtx mmix_struct_value_rtx (tree, int);
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#undef TARGET_SETUP_INCOMING_VARARGS
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#define TARGET_SETUP_INCOMING_VARARGS mmix_setup_incoming_varargs
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#undef TARGET_GIMPLIFY_VA_ARG_EXPR
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#define TARGET_GIMPLIFY_VA_ARG_EXPR mmix_gimplify_va_arg_expr
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struct gcc_target targetm = TARGET_INITIALIZER;
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@ -843,109 +846,19 @@ mmix_setup_incoming_varargs (CUMULATIVE_ARGS *args_so_farp,
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internal_error ("MMIX Internal: Last named vararg would not fit in a register");
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}
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/* EXPAND_BUILTIN_VA_ARG. */
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/* Gimplify VA_ARG_EXPR. All we need to do is figure out if TYPE is
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pass-by-reference and hand off to standard routines. */
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/* This is modified from the "standard" implementation of va_arg: read the
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value from the current (padded) address and increment by the (padded)
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size. The difference for MMIX is that if the type is
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pass-by-reference, then perform an indirection. */
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rtx
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mmix_expand_builtin_va_arg (tree valist, tree type)
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static tree
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mmix_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p, tree *post_p)
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{
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tree ptr_size = size_int (BITS_PER_WORD / BITS_PER_UNIT);
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tree addr_tree, type_size = NULL;
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tree align, alignm1;
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tree rounded_size;
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rtx addr;
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CUMULATIVE_ARGS cum;
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cum.lib = 0;
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/* Compute the rounded size of the type. */
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/* Get AP. */
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addr_tree = valist;
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align = size_int (PARM_BOUNDARY / BITS_PER_UNIT);
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alignm1 = size_int (PARM_BOUNDARY / BITS_PER_UNIT - 1);
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if (type == error_mark_node
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|| (type_size = TYPE_SIZE_UNIT (TYPE_MAIN_VARIANT (type))) == NULL
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|| TREE_OVERFLOW (type_size))
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/* Presumably an error; the size isn't computable. A message has
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supposedly been emitted elsewhere. */
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rounded_size = size_zero_node;
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if (mmix_function_arg_pass_by_reference (&cum, TYPE_MODE (type), type, 0))
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return ind_gimplify_va_arg_expr (valist, type, pre_p, post_p);
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else
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rounded_size = fold (build (MULT_EXPR, sizetype,
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fold (build (TRUNC_DIV_EXPR, sizetype,
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fold (build (PLUS_EXPR, sizetype,
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type_size, alignm1)),
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align)),
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align));
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if (AGGREGATE_TYPE_P (type)
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&& GET_MODE_UNIT_SIZE (TYPE_MODE (type)) < 8
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&& GET_MODE_UNIT_SIZE (TYPE_MODE (type)) != 0)
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{
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/* Adjust for big-endian the location of aggregates passed in a
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register, but where the aggregate is accessed in a shorter mode
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than the natural register mode (i.e. it is accessed as SFmode(?),
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SImode, HImode or QImode rather than DImode or DFmode(?)). FIXME:
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Or should we adjust the mode in which the aggregate is read, to be
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a register size mode? (Hum, nah, a small offset is generally
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cheaper than a wider memory access on MMIX.) */
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addr_tree
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= build (PLUS_EXPR, TREE_TYPE (addr_tree), addr_tree,
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size_int ((BITS_PER_WORD / BITS_PER_UNIT)
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- GET_MODE_UNIT_SIZE (TYPE_MODE (type))));
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}
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else if (!integer_zerop (rounded_size))
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{
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if (!really_constant_p (type_size))
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/* Varying-size types come in by reference. */
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addr_tree
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= build1 (INDIRECT_REF, build_pointer_type (type), addr_tree);
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else
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{
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/* If the size is less than a register, then we need to pad the
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address by adding the difference. */
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tree addend
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= fold (build (COND_EXPR, sizetype,
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fold (build (GT_EXPR, sizetype,
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rounded_size,
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align)),
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size_zero_node,
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fold (build (MINUS_EXPR, sizetype,
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rounded_size,
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type_size))));
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tree addr_tree1
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= fold (build (PLUS_EXPR, TREE_TYPE (addr_tree), addr_tree,
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addend));
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/* If this type is larger than what fits in a register, then it
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is passed by reference. */
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addr_tree
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= fold (build (COND_EXPR, TREE_TYPE (addr_tree1),
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fold (build (GT_EXPR, sizetype,
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rounded_size,
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ptr_size)),
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build1 (INDIRECT_REF, build_pointer_type (type),
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addr_tree1),
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addr_tree1));
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}
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}
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addr = expand_expr (addr_tree, NULL_RTX, Pmode, EXPAND_NORMAL);
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addr = copy_to_reg (addr);
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if (!integer_zerop (rounded_size))
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{
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/* Compute new value for AP. For MMIX, it is always advanced by the
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size of a register. */
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tree t = build (MODIFY_EXPR, TREE_TYPE (valist), valist,
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build (PLUS_EXPR, TREE_TYPE (valist), valist,
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ptr_size));
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TREE_SIDE_EFFECTS (t) = 1;
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expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
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}
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return addr;
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return std_gimplify_va_arg_expr (valist, type, pre_p, post_p);
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}
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/* TRAMPOLINE_SIZE. */
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@ -687,7 +687,7 @@ enum reg_class
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/* Node: Elimination */
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/* FIXME: Is this requirement built-in? Anyway, we should try to get rid
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of it; we can deduce the value. */
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#define FRAME_POINTER_REQUIRED (nonlocal_goto_stack_level != NULL_RTX)
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#define FRAME_POINTER_REQUIRED current_function_has_nonlocal_label
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/* The frame-pointer is stored in a location that either counts to the
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offset of incoming parameters, or that counts to the offset of the
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@ -789,13 +789,6 @@ typedef struct { int regs; int lib; } CUMULATIVE_ARGS;
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#define FUNCTION_PROFILER(FILE, LABELNO) \
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mmix_function_profiler (FILE, LABELNO)
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/* Node: Varargs */
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/* FIXME: This and other EXPAND_BUILTIN_VA_... target macros are not
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documented, although used by several targets. */
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#define EXPAND_BUILTIN_VA_ARG(VALIST, TYPE) \
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mmix_expand_builtin_va_arg (VALIST, TYPE)
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/* Node: Trampolines */
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#define TRAMPOLINE_TEMPLATE(FILE) \
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