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i386.c (function_arg): Always treat 8- and 16-byte wide vectors the same, even if MMX/SSE are disabled. 

* config/i386/i386.c (function_arg): Always treat 8-
        and 16-byte wide vectors the same, even if MMX/SSE
        are disabled.
        (contains_128bit_aligned_vector_p): Add comment.

From-SVN: r85207
This commit is contained in:
Paolo Bonzini 2004-07-26 21:45:57 +00:00 committed by Richard Henderson
parent 9c18fb8852
commit 90d5887b53
2 changed files with 30 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2004-07-22 Paolo Bonzini <bonzini@gnu.org>
* config/i386/i386.c (function_arg): Always treat 8-
and 16-byte wide vectors the same, even if MMX/SSE
are disabled.
(contains_128bit_aligned_vector_p): Add comment.
2004-07-26 J"orn Rennecke <joern.rennecke@superh.com>
* ra.h (enum node_type): Rename to:

24
gcc/config/i386/i386.c
View File

@ -2672,6 +2672,28 @@ function_arg (CUMULATIVE_ARGS *cum, /* current arg information */
int words = (bytes + UNITS_PER_WORD - 1) / UNITS_PER_WORD;
static bool warnedsse, warnedmmx;
/* To simplify the code below, represent vector types with a vector mode
even if MMX/SSE are not active. */
if (type
&& TREE_CODE (type) == VECTOR_TYPE
&& (bytes == 8 || bytes == 16)
&& GET_MODE_CLASS (TYPE_MODE (type)) != MODE_VECTOR_INT
&& GET_MODE_CLASS (TYPE_MODE (type)) != MODE_VECTOR_FLOAT)
{
enum machine_mode innermode = TYPE_MODE (TREE_TYPE (type));
mode = TREE_CODE (TREE_TYPE (type)) == REAL_TYPE
? MIN_MODE_VECTOR_FLOAT : MIN_MODE_VECTOR_INT;
/* Get the mode which has this inner mode and number of units. */
while (GET_MODE_NUNITS (mode) != TYPE_VECTOR_SUBPARTS (type)
|| GET_MODE_INNER (mode) != innermode)
{
mode = GET_MODE_WIDER_MODE (mode);
if (mode == VOIDmode)
abort ();
}
}
/* Handle a hidden AL argument containing number of registers for varargs
x86-64 functions. For i386 ABI just return constm1_rtx to avoid
any AL settings. */
@ -2802,7 +2824,7 @@ ix86_pass_by_reference (CUMULATIVE_ARGS *cum ATTRIBUTE_UNUSED,
}
/* Return true when TYPE should be 128bit aligned for 32bit argument passing
ABI */
ABI. Only called if TARGET_SSE. */
static bool
contains_128bit_aligned_vector_p (tree type)
{