diff options
author | Brian Paul <[email protected]> | 2008-09-11 17:07:30 -0600 |
---|---|---|
committer | Brian Paul <[email protected]> | 2008-09-11 17:10:32 -0600 |
commit | 178bbaff80d079606a1135bd65f1a85bac9774c4 (patch) | |
tree | 0a2a4ec1e191485d76b3fbf93e3ad27ac0c901c0 /src/gallium/auxiliary/rtasm | |
parent | be925ab6e8ecf6758adb2c6f2c423af31c5f86ca (diff) |
gallium: add special cases in spe_load_float(), spe_load_int(), added spe_splat()
Diffstat (limited to 'src/gallium/auxiliary/rtasm')
-rw-r--r-- | src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c | 45 | ||||
-rw-r--r-- | src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h | 4 |
2 files changed, 40 insertions, 9 deletions
diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c index 61010e43339..a04cc6c4ff7 100644 --- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c +++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c @@ -473,21 +473,48 @@ EMIT_R (spe_mtspr, 0x10c); void spe_load_float(struct spe_function *p, unsigned rT, float x) { - union { - float f; - unsigned u; - } bits; - bits.f = x; - spe_ilhu(p, rT, bits.u >> 16); - spe_iohl(p, rT, bits.u & 0xffff); + if (x == 0.0f) { + spe_il(p, rT, 0x0); + } + else if (x == 0.5f) { + spe_ilhu(p, rT, 0x3f00); + } + else if (x == 1.0f) { + spe_ilhu(p, rT, 0x3f80); + } + else if (x == -1.0f) { + spe_ilhu(p, rT, 0xbf80); + } + else { + union { + float f; + unsigned u; + } bits; + bits.f = x; + spe_ilhu(p, rT, bits.u >> 16); + spe_iohl(p, rT, bits.u & 0xffff); + } } void spe_load_int(struct spe_function *p, unsigned rT, int i) { - spe_ilhu(p, rT, i >> 16); - spe_iohl(p, rT, i & 0xffff); + if (-32768 <= i && i <= 32767) { + spe_il(p, rT, i); + } + else { + spe_ilhu(p, rT, i >> 16); + spe_iohl(p, rT, i & 0xffff); + } +} + + +void +spe_splat(struct spe_function *p, unsigned rT, unsigned rA) +{ + spe_ila(p, rT, 66051); + spe_shufb(p, rT, rA, rA, rT); } diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h index dee8c55c4a9..d95e5aace34 100644 --- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h +++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h @@ -292,6 +292,10 @@ spe_load_float(struct spe_function *p, unsigned rT, float x); extern void spe_load_int(struct spe_function *p, unsigned rT, int i); +/** Replicate word 0 of rA across rT. */ +extern void +spe_splat(struct spe_function *p, unsigned rT, unsigned rA); + /** Complement/invert all bits in rT. */ extern void spe_complement(struct spe_function *p, unsigned rT); |