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divmovti4.c (union qword_UTItype): New data type.

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* config/spu/divmovti4.c (union qword_UTItype): New data type.
	(si_from_UTItype, si_to_UTItype): New functions.
	(__udivmodti4): Use them to implement type-punning.
	* config/spu/multi3.c (union qword_TItype): New data type.
	(si_from_TItype, si_to_TItype): New functions.
	(__multi3): Use them to implement type-punning.

From-SVN: r173029
This commit is contained in:
Ulrich Weigand 2011-04-27 13:10:17 +00:00 committed by Ulrich Weigand
parent c187d33c80
commit 526ed6c241
3 changed files with 60 additions and 7 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2011-04-27 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* config/spu/divmovti4.c (union qword_UTItype): New data type.
(si_from_UTItype, si_to_UTItype): New functions.
(__udivmodti4): Use them to implement type-punning.
* config/spu/multi3.c (union qword_TItype): New data type.
(si_from_TItype, si_to_TItype): New functions.
(__multi3): Use them to implement type-punning.
2011-04-27 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* config/spu/spu.c (spu_expand_epilogue): Do not emit barrier.

30
gcc/config/spu/divmodti4.c
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@ -29,6 +29,28 @@ UTItype __udivti3 (UTItype u, UTItype v);
UTItype __umodti3 (UTItype u, UTItype v);
UTItype __udivmodti4 (UTItype u, UTItype v, UTItype *w);
union qword_UTItype
{
qword q;
UTItype t;
};
inline static qword
si_from_UTItype (UTItype t)
{
union qword_UTItype u;
u.t = t;
return u.q;
}
inline static UTItype
si_to_UTItype (qword q)
{
union qword_UTItype u;
u.q = q;
return u.t;
}
inline static unsigned int
count_leading_zeros (UTItype x)
{
@ -67,8 +89,8 @@ __udivmodti4 (UTItype num, UTItype den, UTItype * rp)
{
qword shift =
si_from_uint (count_leading_zeros (den) - count_leading_zeros (num));
qword n0 = *(qword *) & num;
qword d0 = *(qword *) & den;
qword n0 = si_from_UTItype (num);
qword d0 = si_from_UTItype (den);
qword bit = si_andi (si_fsmbi (1), 1);
qword r0 = si_il (0);
qword m1 = si_fsmbi (0x000f);
@ -101,8 +123,8 @@ __udivmodti4 (UTItype num, UTItype den, UTItype * rp)
}
while (si_to_uint (si_orx (bit)));
if (rp)
*rp = *(UTItype *) & n0;
return *(UTItype *) & r0;
*rp = si_to_UTItype (n0);
return si_to_UTItype (r0);
}
UTItype

28
gcc/config/spu/multi3.c
View File

@ -23,6 +23,28 @@
typedef int TItype __attribute__ ((mode (TI)));
union qword_TItype
{
qword q;
TItype t;
};
inline static qword
si_from_TItype (TItype t)
{
union qword_TItype u;
u.t = t;
return u.q;
}
inline static TItype
si_to_TItype (qword q)
{
union qword_TItype u;
u.q = q;
return u.t;
}
/* A straight forward vectorization and unrolling of
* short l[8], r[8];
* TItype total = 0;
@ -33,8 +55,8 @@ typedef int TItype __attribute__ ((mode (TI)));
TItype
__multi3 (TItype l, TItype r)
{
qword u = *(qword *) & l;
qword v = *(qword *) & r;
qword u = si_from_TItype (l);
qword v = si_from_TItype (r);
qword splat0 = si_shufb (v, v, si_ilh (0x0001));
qword splat1 = si_shufb (v, v, si_ilh (0x0203));
qword splat2 = si_shufb (v, v, si_ilh (0x0405));
@ -93,5 +115,5 @@ __multi3 (TItype l, TItype r)
total = si_cgx (total10, carry, total);
total = si_shlqbyi (total, 4);
total = si_addx (total10, carry, total);
return *(TItype *) & total;
return si_to_TItype (total);
}