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intel/fs: Lower uniform pull constant load message to LSC dataport

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Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11600>
This commit is contained in:
Jason Ekstrand
2021-06-26 11:11:09 -05:00
committed by Marge Bot
parent 6362059b6b
commit f5876dfdb9
1 changed files with 52 additions and 2 deletions
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54
src/intel/compiler/brw_fs.cpp
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@@ -3856,14 +3856,64 @@ fs_visitor::lower_uniform_pull_constant_loads()
if (inst->opcode != FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD)
continue;
if (devinfo->ver >= 7) {
const fs_reg& surface = inst->src[0];
const fs_reg& offset_B = inst->src[1];
assert(offset_B.file == IMM);
if (devinfo->has_lsc) {
const fs_builder ubld =
fs_builder(this, block, inst).group(8, 0).exec_all();
const fs_reg payload = ubld.vgrf(BRW_REGISTER_TYPE_UD);
ubld.MOV(payload, offset_B);
inst->sfid = GFX12_SFID_UGM;
inst->desc = lsc_msg_desc(devinfo, LSC_OP_LOAD,
1 /* simd_size */,
LSC_ADDR_SURFTYPE_BTI,
LSC_ADDR_SIZE_A32,
1 /* num_coordinates */,
LSC_DATA_SIZE_D32,
inst->size_written / 4,
true /* transpose */,
LSC_CACHE_LOAD_L1STATE_L3MOCS,
true /* has_dest */);
fs_reg ex_desc;
if (surface.file == IMM) {
ex_desc = brw_imm_ud(lsc_bti_ex_desc(devinfo, surface.ud));
} else {
/* We only need the first component for the payload so we can use
* one of the other components for the extended descriptor
*/
ex_desc = component(payload, 1);
ubld.group(1, 0).SHL(ex_desc, surface, brw_imm_ud(24));
}
/* Update the original instruction. */
inst->opcode = SHADER_OPCODE_SEND;
inst->mlen = lsc_msg_desc_src0_len(devinfo, inst->desc);
inst->ex_mlen = 0;
inst->header_size = 0;
inst->send_has_side_effects = false;
inst->send_is_volatile = true;
inst->exec_size = 1;
/* Finally, the payload */
inst->resize_sources(3);
inst->src[0] = brw_imm_ud(0); /* desc */
inst->src[1] = ex_desc;
inst->src[2] = payload;
invalidate_analysis(DEPENDENCY_INSTRUCTIONS | DEPENDENCY_VARIABLES);
} else if (devinfo->ver >= 7) {
const fs_builder ubld = fs_builder(this, block, inst).exec_all();
const fs_reg payload = ubld.group(8, 0).vgrf(BRW_REGISTER_TYPE_UD);
ubld.group(8, 0).MOV(payload,
retype(brw_vec8_grf(0, 0), BRW_REGISTER_TYPE_UD));
ubld.group(1, 0).MOV(component(payload, 2),
brw_imm_ud(inst->src[1].ud / 16));
brw_imm_ud(offset_B.ud / 16));
inst->opcode = FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD_GFX7;
inst->src[1] = payload;