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gallium: added spe_splat_word()

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This commit is contained in:
Brian Paul
2008-09-12 21:08:01 -06:00
parent 5f3ec82338
commit 31a112cad4
2 changed files with 29 additions and 0 deletions
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src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
+25
View File
@@ -540,4 +540,29 @@ spe_zero(struct spe_function *p, unsigned rT)
}
void
spe_splat_word(struct spe_function *p, unsigned rT, unsigned rA, int word)
{
assert(word >= 0);
assert(word <= 3);
if (word == 0) {
int tmp1 = rT;
spe_ila(p, tmp1, 66051);
spe_shufb(p, rT, rA, rA, tmp1);
}
else {
/* XXX review this, we may not need the rotqbyi instruction */
int tmp1 = rT;
int tmp2 = spe_allocate_available_register(p);
spe_ila(p, tmp1, 66051);
spe_rotqbyi(p, tmp2, rA, 4 * word);
spe_shufb(p, rT, tmp2, tmp2, tmp1);
spe_release_register(p, tmp2);
}
}
#endif /* GALLIUM_CELL */
src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h
+4
View File
@@ -308,6 +308,10 @@ spe_move(struct spe_function *p, unsigned rT, unsigned rA);
extern void
spe_zero(struct spe_function *p, unsigned rT);
/** rT = splat(rA, word) */
extern void
spe_splat_word(struct spe_function *p, unsigned rT, unsigned rA, int word);
/* Floating-point instructions
*/