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builtins.c (std_expand_builtin_va_arg): Align operand when needed.

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* builtins.c (std_expand_builtin_va_arg): Align operand when needed.
	* i386.c (init_cumulative_args): Set warn_sse; fix handling of variadic
	functions accepting SSE arguments
	(function_arg): Warn only when asked to warn.
	* i386.h (ix86_args): Add warn_sse/warn_mmx fiels.

From-SVN: r75892
This commit is contained in:
Jan Hubicka 2004-01-15 00:07:04 +01:00 committed by Jan Hubicka
parent f560bf91ae
commit e1be55d0cb
4 changed files with 41 additions and 3 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2004-01-15 Jan Hubicka <jh@suse.cz>
* builtins.c (std_expand_builtin_va_arg): Align operand when needed.
* i386.c (init_cumulative_args): Set warn_sse; fix handling of variadic
functions accepting SSE arguments
(function_arg): Warn only when asked to warn.
* i386.h (ix86_args): Add warn_sse/warn_mmx fiels.
2004-01-14 Joseph S. Myers <jsm@polyomino.org.uk>
* c-parse.in (stmts_and_decls): Make label at end of compound

22
gcc/builtins.c
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@ -3990,10 +3990,32 @@ std_expand_builtin_va_arg (tree valist, tree type)
tree align, alignm1;
tree rounded_size;
rtx addr;
HOST_WIDE_INT boundary;
/* Compute the rounded size of the type. */
align = size_int (PARM_BOUNDARY / BITS_PER_UNIT);
alignm1 = size_int (PARM_BOUNDARY / BITS_PER_UNIT - 1);
boundary = FUNCTION_ARG_BOUNDARY (TYPE_MODE (type), type);
/* va_list pointer is aligned to PARM_BOUNDARY. If argument actually
requires greater alignment, we must perform dynamic alignment. */
if (boundary > PARM_BOUNDARY)
{
if (!PAD_VARARGS_DOWN)
{
t = build (MODIFY_EXPR, TREE_TYPE (valist), valist,
build (PLUS_EXPR, TREE_TYPE (valist), valist,
build_int_2 (boundary / BITS_PER_UNIT - 1, 0)));
TREE_SIDE_EFFECTS (t) = 1;
expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
}
t = build (MODIFY_EXPR, TREE_TYPE (valist), valist,
build (BIT_AND_EXPR, TREE_TYPE (valist), valist,
build_int_2 (~(boundary / BITS_PER_UNIT - 1), -1)));
TREE_SIDE_EFFECTS (t) = 1;
expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
}
if (type == error_mark_node
|| (type_size = TYPE_SIZE_UNIT (TYPE_MAIN_VARIANT (type))) == NULL
|| TREE_OVERFLOW (type_size))

12
gcc/config/i386/i386.c
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@ -1839,6 +1839,8 @@ init_cumulative_args (CUMULATIVE_ARGS *cum, /* Argument info to initialize */
cum->nregs = ix86_regparm;
cum->sse_nregs = SSE_REGPARM_MAX;
cum->mmx_nregs = MMX_REGPARM_MAX;
cum->warn_sse = true;
cum->warn_mmx = true;
cum->maybe_vaarg = false;
/* Use ecx and edx registers if function has fastcall attribute */
@ -1857,7 +1859,7 @@ init_cumulative_args (CUMULATIVE_ARGS *cum, /* Argument info to initialize */
are no variable arguments. If there are variable arguments, then
we won't pass anything in registers */
if (cum->nregs)
if (cum->nregs || !TARGET_MMX || !TARGET_SSE)
{
for (param = (fntype) ? TYPE_ARG_TYPES (fntype) : 0;
param != 0; param = next_param)
@ -1868,6 +1870,10 @@ init_cumulative_args (CUMULATIVE_ARGS *cum, /* Argument info to initialize */
if (!TARGET_64BIT)
{
cum->nregs = 0;
cum->sse_nregs = 0;
cum->mmx_nregs = 0;
cum->warn_sse = 0;
cum->warn_mmx = 0;
cum->fastcall = 0;
}
cum->maybe_vaarg = true;
@ -2581,7 +2587,7 @@ function_arg (CUMULATIVE_ARGS *cum, /* current arg information */
case V2DFmode:
if (!type || !AGGREGATE_TYPE_P (type))
{
if (!TARGET_SSE && !warnedmmx)
if (!TARGET_SSE && !warnedmmx && cum->warn_sse)
{
warnedsse = true;
warning ("SSE vector argument without SSE enabled "
@ -2597,7 +2603,7 @@ function_arg (CUMULATIVE_ARGS *cum, /* current arg information */
case V2SFmode:
if (!type || !AGGREGATE_TYPE_P (type))
{
if (!TARGET_MMX && !warnedmmx)
if (!TARGET_MMX && !warnedmmx && cum->warn_mmx)
{
warnedmmx = true;
warning ("MMX vector argument without MMX enabled "

2
gcc/config/i386/i386.h
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@ -1743,6 +1743,8 @@ typedef struct ix86_args {
int fastcall; /* fastcall calling convention is used */
int sse_words; /* # sse words passed so far */
int sse_nregs; /* # sse registers available for passing */
int warn_sse; /* True when we want to warn about SSE ABI. */
int warn_mmx; /* True when we want to warn about MMX ABI. */
int sse_regno; /* next available sse register number */
int mmx_words; /* # mmx words passed so far */
int mmx_nregs; /* # mmx registers available for passing */