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pan/bi: Implement vectorized f32_to_f16

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f2f16 needs special treatment since it can access multiple 32-bit words.
Corresponds to the two-op instruction V2F32_TO_V2F16.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10392>
This commit is contained in:
Alyssa Rosenzweig
2020-12-31 16:03:38 -05:00
committed by Marge Bot
parent 1fb681e51d
commit d43c0f35ff
1 changed files with 11 additions and 7 deletions
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src/panfrost/bifrost/bifrost_compile.c
+11 -7
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@@ -1522,9 +1522,9 @@ bi_emit_alu(bi_builder *b, nir_alu_instr *instr)
{
bi_index dst = bi_dest_index(&instr->dest.dest);
unsigned sz = nir_dest_bit_size(instr->dest.dest);
unsigned srcs = nir_op_infos[instr->op].num_inputs;
unsigned comps = nir_dest_num_components(instr->dest.dest);
unsigned src_sz = srcs > 0 ? nir_src_bit_size(instr->src[0].src) : 0;
if (!instr->dest.dest.is_ssa) {
for (unsigned i = 0; i < comps; ++i)
@@ -1598,6 +1598,16 @@ bi_emit_alu(bi_builder *b, nir_alu_instr *instr)
return;
}
case nir_op_f2f16:
assert(src_sz == 32);
bi_index idx = bi_src_index(&instr->src[0].src);
bi_index s0 = bi_word(idx, instr->src[0].swizzle[0]);
bi_index s1 = comps > 1 ?
bi_word(idx, instr->src[0].swizzle[1]) : s0;
bi_v2f32_to_v2f16_to(b, dst, s0, s1, BI_ROUND_NONE);
return;
default:
break;
}
@@ -1606,8 +1616,6 @@ bi_emit_alu(bi_builder *b, nir_alu_instr *instr)
bi_index s1 = srcs > 1 ? bi_alu_src_index(instr->src[1], comps) : bi_null();
bi_index s2 = srcs > 2 ? bi_alu_src_index(instr->src[2], comps) : bi_null();
unsigned src_sz = srcs > 0 ? nir_src_bit_size(instr->src[0].src) : 0;
switch (instr->op) {
case nir_op_ffma:
bi_fma_to(b, sz, dst, s0, s1, s2, BI_ROUND_NONE);
@@ -1783,10 +1791,6 @@ bi_emit_alu(bi_builder *b, nir_alu_instr *instr)
break;
}
case nir_op_f2f16:
bi_v2f32_to_v2f16_to(b, dst, s0, s0, BI_ROUND_NONE);
break;
case nir_op_f2f32:
bi_f16_to_f32_to(b, dst, s0);
break;