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authorBrian Paul <[email protected]>2008-09-11 17:07:30 -0600
committerBrian Paul <[email protected]>2008-09-11 17:10:32 -0600
commit178bbaff80d079606a1135bd65f1a85bac9774c4 (patch)
tree0a2a4ec1e191485d76b3fbf93e3ad27ac0c901c0 /src/gallium/auxiliary/rtasm
parentbe925ab6e8ecf6758adb2c6f2c423af31c5f86ca (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.c45
-rw-r--r--src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h4
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);