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pan/bit: Interpret CMP

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4789>
This commit is contained in:
Alyssa Rosenzweig
2020-04-27 14:16:26 -04:00
committed by Marge Bot
parent 71501972e9
commit 778e27b5ac
1 changed files with 41 additions and 1 deletions
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src/panfrost/bifrost/test/bi_interpret.c
+41 -1
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@@ -251,6 +251,20 @@ bit_eval_cond(enum bi_cond cond, bit_t l, bit_t r, nir_alu_type T, unsigned cl,
}
}
static unsigned
bit_cmp(enum bi_cond cond, bit_t l, bit_t r, nir_alu_type T, unsigned cl, unsigned cr, bool d3d)
{
bool v = bit_eval_cond(cond, l, r, T, cl, cr);
/* Fill for D3D but only up to 32-bit... 64-bit is only partial
* (although we probably need a cleverer representation for 64-bit) */
unsigned sz = MIN2(nir_alu_type_get_type_size(T), 32);
unsigned max = (sz == 32) ? (~0) : ((1 << sz) - 1);
return v ? (d3d ? max : 1) : 0;
}
static float
biti_special(float Q, enum bi_special_op op)
{
@@ -396,7 +410,33 @@ bit_step(struct bit_state *s, bi_instruction *ins, bool FMA)
bpoly(add);
case BI_BRANCH:
case BI_CMP:
unreachable("Unsupported op");
case BI_CMP: {
nir_alu_type T = ins->src_types[0];
unsigned sz = nir_alu_type_get_type_size(T);
if (sz == 32 || sz == 64) {
dest.u32 = bit_cmp(ins->cond, srcs[0], srcs[1], T, 0, 0, false);
} else if (sz == 16) {
for (unsigned c = 0; c < 2; ++c) {
dest.u16[c] = bit_cmp(ins->cond, srcs[0], srcs[1],
T, ins->swizzle[0][c], ins->swizzle[1][c],
false);
}
} else if (sz == 8) {
for (unsigned c = 0; c < 4; ++c) {
dest.u8[c] = bit_cmp(ins->cond, srcs[0], srcs[1],
T, ins->swizzle[0][c], ins->swizzle[1][c],
false);
}
} else {
unreachable("Invalid");
}
break;
}
case BI_BITWISE:
unreachable("Unsupported op");