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ia64.c (ia64_function_arg_pass_by_reference): New. 

* config/ia64/ia64.c (ia64_function_arg_pass_by_reference): New.
        (ia64_va_arg): Expect variable sized types by reference.
        * config/ia64/ia64-protos.h: Update.
        * config/ia64/ia64.h (FUNCTION_ARG_PASS_BY_REFERENCE): Use
        ia64_function_arg_pass_by_reference.

From-SVN: r52494
This commit is contained in:
Richard Henderson 2002-04-18 13:28:39 -07:00 committed by Richard Henderson
parent a48632153d
commit 51dcde6f95
4 changed files with 33 additions and 1 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2002-04-18 Richard Henderson <rth@redhat.com>
* config/ia64/ia64.c (ia64_function_arg_pass_by_reference): New.
(ia64_va_arg): Expect variable sized types by reference.
* config/ia64/ia64-protos.h: Update.
* config/ia64/ia64.h (FUNCTION_ARG_PASS_BY_REFERENCE): Use
ia64_function_arg_pass_by_reference.
2002-04-18 Richard Henderson <rth@redhat.com>
* ifcvt.c: Include except.h.

3
gcc/config/ia64/ia64-protos.h
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@ -114,6 +114,9 @@ extern int ia64_function_arg_partial_nregs PARAMS((CUMULATIVE_ARGS *,
extern void ia64_function_arg_advance PARAMS((CUMULATIVE_ARGS *,
enum machine_mode,
tree, int));
extern int ia64_function_arg_pass_by_reference PARAMS((CUMULATIVE_ARGS *,
enum machine_mode,
tree, int));
extern int ia64_return_in_memory PARAMS((tree));
extern void ia64_asm_output_external PARAMS((FILE *, tree, const char *));

20
gcc/config/ia64/ia64.c
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@ -3200,6 +3200,19 @@ ia64_function_arg_advance (cum, mode, type, named)
cum->int_regs = cum->words;
}
}
/* Variable sized types are passed by reference. */
/* ??? At present this is a GCC extension to the IA-64 ABI. */
int
ia64_function_arg_pass_by_reference (cum, mode, type, named)
CUMULATIVE_ARGS *cum ATTRIBUTE_UNUSED;
enum machine_mode mode ATTRIBUTE_UNUSED;
tree type;
int named ATTRIBUTE_UNUSED;
{
return TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST;
}
/* Implement va_start. */
@ -3231,6 +3244,13 @@ ia64_va_arg (valist, type)
{
tree t;
/* Variable sized types are passed by reference. */
if (TREE_CODE (TYPE_SIZE (type)) != INTEGER_CST)
{
rtx addr = std_expand_builtin_va_arg (valist, build_pointer_type (type));
return gen_rtx_MEM (ptr_mode, force_reg (Pmode, addr));
}
/* Arguments with alignment larger than 8 bytes start at the next even
boundary. */
if (TYPE_ALIGN (type) > 8 * BITS_PER_UNIT)

3
gcc/config/ia64/ia64.h
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@ -1268,7 +1268,8 @@ enum reg_class
pointer is passed in whatever way is appropriate for passing a pointer to
that type. */
#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) 0
#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
ia64_function_arg_pass_by_reference (&CUM, MODE, TYPE, NAMED)
/* A C type for declaring a variable that is used as the first argument of
`FUNCTION_ARG' and other related values. For some target machines, the type