diff options
| author | Alyssa Rosenzweig <[email protected]> | 2019-08-26 14:49:49 -0700 |
|---|---|---|
| committer | Alyssa Rosenzweig <[email protected]> | 2019-08-30 15:50:23 -0700 |
| commit | bbe29149670c06a5cb5bdbd17503aae1b1219788 (patch) | |
| tree | 5152376225eac06d97881f4688d84d76e7b75219 /src | |
| parent | 67909c8ff288483106bea63e893752e6989eb3e3 (diff) | |
pan/midgard: Factor out mir_is_scalar
This helper doesn't need to be in the giant loop.
Signed-off-by: Alyssa Rosenzweig <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/panfrost/midgard/midgard_schedule.c | 75 |
1 files changed, 42 insertions, 33 deletions
diff --git a/src/panfrost/midgard/midgard_schedule.c b/src/panfrost/midgard/midgard_schedule.c index 5c6878e9f6b..79b9b47b104 100644 --- a/src/panfrost/midgard/midgard_schedule.c +++ b/src/panfrost/midgard/midgard_schedule.c @@ -195,6 +195,47 @@ can_writeout_fragment(compiler_context *ctx, midgard_instruction **bundle, unsig return true; } +/* Helpers for scheudling */ + +static bool +mir_is_scalar(midgard_instruction *ains) +{ + /* Does the op support scalar units? */ + if (!(alu_opcode_props[ains->alu.op].props & UNITS_SCALAR)) + return false; + + /* Do we try to use it as a vector op? */ + if (!is_single_component_mask(ains->mask)) + return false; + + /* Otherwise, check mode hazards */ + bool could_scalar = true; + + /* Only 16/32-bit can run on a scalar unit */ + could_scalar &= ains->alu.reg_mode != midgard_reg_mode_8; + could_scalar &= ains->alu.reg_mode != midgard_reg_mode_64; + could_scalar &= ains->alu.dest_override == midgard_dest_override_none; + + if (ains->alu.reg_mode == midgard_reg_mode_16) { + /* If we're running in 16-bit mode, we + * can't have any 8-bit sources on the + * scalar unit (since the scalar unit + * doesn't understand 8-bit) */ + + midgard_vector_alu_src s1 = + vector_alu_from_unsigned(ains->alu.src1); + + could_scalar &= !s1.half; + + midgard_vector_alu_src s2 = + vector_alu_from_unsigned(ains->alu.src2); + + could_scalar &= !s2.half; + } + + return could_scalar; +} + /* Schedules, but does not emit, a single basic block. After scheduling, the * final tag and size of the block are known, which are necessary for branching * */ @@ -270,39 +311,7 @@ schedule_bundle(compiler_context *ctx, midgard_block *block, midgard_instruction if (!unit) { int op = ains->alu.op; int units = alu_opcode_props[op].props; - - bool scalarable = units & UNITS_SCALAR; - bool could_scalar = is_single_component_mask(ains->mask); - - /* Only 16/32-bit can run on a scalar unit */ - could_scalar &= ains->alu.reg_mode != midgard_reg_mode_8; - could_scalar &= ains->alu.reg_mode != midgard_reg_mode_64; - could_scalar &= ains->alu.dest_override == midgard_dest_override_none; - - if (ains->alu.reg_mode == midgard_reg_mode_16) { - /* If we're running in 16-bit mode, we - * can't have any 8-bit sources on the - * scalar unit (since the scalar unit - * doesn't understand 8-bit) */ - - midgard_vector_alu_src s1 = - vector_alu_from_unsigned(ains->alu.src1); - - could_scalar &= !s1.half; - - midgard_vector_alu_src s2 = - vector_alu_from_unsigned(ains->alu.src2); - - could_scalar &= !s2.half; - } - - bool scalar = could_scalar && scalarable; - - /* TODO: Check ahead-of-time for other scalar - * hazards that otherwise get aborted out */ - - if (scalar) - assert(units & UNITS_SCALAR); + bool scalar = mir_is_scalar(ains); if (!scalar) { if (last_unit >= UNIT_VADD) { |