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pan/bi: Fill in some more conversions

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The trick is that downcasts are just swizzling out what you don't want,
so things like U32_TO_F16 can be synthesized as V2U16_TO_V2F16 with
src.h00

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10065>
This commit is contained in:
Alyssa Rosenzweig
2020-12-31 22:14:42 -05:00
committed by Marge Bot
parent 435800e750
commit be74b84e6f
1 changed files with 17 additions and 12 deletions
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29
src/panfrost/bifrost/bifrost_compile.c
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@@ -1798,16 +1798,20 @@ bi_emit_alu(bi_builder *b, nir_alu_instr *instr)
break;
case nir_op_f2u16:
if (src_sz == 32)
unreachable("should've been lowered");
else
if (src_sz == 32) {
bi_mkvec_v2i16_to(b, dst,
bi_f32_to_u32(b, s0, BI_ROUND_RTZ),
bi_imm_u16(0));
} else
bi_v2f16_to_v2u16_to(b, dst, s0, BI_ROUND_RTZ);
break;
case nir_op_f2i16:
if (src_sz == 32)
unreachable("should've been lowered");
else
if (src_sz == 32) {
bi_mkvec_v2i16_to(b, dst,
bi_f32_to_s32(b, s0, BI_ROUND_RTZ),
bi_imm_u16(0));
} else
bi_v2f16_to_v2s16_to(b, dst, s0, BI_ROUND_RTZ);
break;
@@ -1820,7 +1824,7 @@ bi_emit_alu(bi_builder *b, nir_alu_instr *instr)
case nir_op_u2f16:
if (src_sz == 32)
unreachable("should've been lowered");
bi_v2u16_to_v2f16_to(b, dst, bi_half(s0, false), BI_ROUND_RTZ);
else if (src_sz == 16)
bi_v2u16_to_v2f16_to(b, dst, s0, BI_ROUND_RTZ);
else if (src_sz == 8)
@@ -1838,9 +1842,11 @@ bi_emit_alu(bi_builder *b, nir_alu_instr *instr)
case nir_op_i2f16:
if (src_sz == 32)
unreachable("should've been lowered");
else
bi_v2s16_to_v2f16_to(b, dst, bi_half(s0, false), BI_ROUND_RTZ);
else if (src_sz == 16)
bi_v2s16_to_v2f16_to(b, dst, s0, BI_ROUND_RTZ);
else if (src_sz == 8)
bi_v2s8_to_v2f16_to(b, dst, s0);
break;
case nir_op_i2f32:
@@ -1864,14 +1870,13 @@ bi_emit_alu(bi_builder *b, nir_alu_instr *instr)
bi_u8_to_u32_to(b, dst, s0);
break;
/* todo optimize out downcasts */
case nir_op_i2i16:
assert(src_sz == 8 || src_sz == 32);
if (src_sz == 8)
bi_v2s8_to_v2s16_to(b, dst, s0);
else
bi_mkvec_v2i16_to(b, dst, bi_half(s0, false), bi_imm_u16(0));
bi_mov_i32_to(b, dst, s0);
break;
case nir_op_u2u16:
@@ -1880,7 +1885,7 @@ bi_emit_alu(bi_builder *b, nir_alu_instr *instr)
if (src_sz == 8)
bi_v2u8_to_v2u16_to(b, dst, s0);
else
bi_mkvec_v2i16_to(b, dst, bi_half(s0, false), bi_imm_u16(0));
bi_mov_i32_to(b, dst, s0);
break;
case nir_op_i2i8: