From: Samuel Iglesias Gonsálvez <sigles...@igalia.com>
Signed-off-by: Samuel Iglesias Gonsálvez <sigles...@igalia.com>
---
src/intel/compiler/brw_fs_nir.cpp | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/src/intel/compiler/brw_fs_nir.cpp
b/src/intel/compiler/brw_fs_nir.cpp
index 1ce89520bf1..dd8e5191f4e 100644
--- a/src/intel/compiler/brw_fs_nir.cpp
+++ b/src/intel/compiler/brw_fs_nir.cpp
@@ -762,6 +762,38 @@ fs_visitor::nir_emit_alu(const fs_builder &bld,
nir_alu_instr *instr)
case nir_op_f2f64:
case nir_op_f2i64:
case nir_op_f2u64:
+ /* BDW PRM, vol02, Command Reference Instructions, mov - MOVE:
+ *
+ * "There is no direct conversion from HF to DF or DF to HF.
+ * Use two instructions and F (Float) as an intermediate type.
+ *
+ * There is no direct conversion from HF to Q/UQ or Q/UQ to HF.
+ * Use two instructions and F (Float) or a word integer type
+ * or a DWord integer type as an intermediate type."
+ */
+ if (nir_src_bit_size(instr->src[0].src) == 16) {
+ brw_reg_type type;
+ switch (instr->op) {
+ case nir_op_f2f64:
+ type = BRW_REGISTER_TYPE_F;
+ break;
+ case nir_op_f2i64:
+ type = BRW_REGISTER_TYPE_D;
+ break;
+ case nir_op_f2u64:
+ type = BRW_REGISTER_TYPE_UD;
+ break;
+ default:
+ unreachable("Not supported");
+ }
+ fs_reg tmp = bld.vgrf(type, 1);
+ inst = bld.MOV(tmp, op[0]);
+ inst->saturate = instr->dest.saturate;
+ inst = bld.MOV(result, tmp);
+ inst->saturate = instr->dest.saturate;
+ break;
+ }
+ /* fallthrough */
case nir_op_i2f64:
case nir_op_i2i64:
case nir_op_u2f64:
--
2.14.1
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