jay: annotate pure sends

for scheduling, CSE, etc

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41688>

src/intel/compiler/jay/jay_builder.h

@@ -453,6 +453,7 @@ struct jayb_send_params {
    bool check_tdr;
    bool uniform;
    bool bindless;
+   bool pure;
 };
 
 static inline jay_inst *
@@ -572,6 +573,7 @@ _jay_SEND(jay_builder *b, const struct jayb_send_params p)
    info->check_tdr = p.check_tdr;
    info->uniform = p.uniform;
    info->bindless = p.bindless;
+   info->pure = p.pure;
    info->ex_desc_imm = p.ex_desc_imm;
    info->ex_mlen = lens[2];
    I->src[0] = jay_imm(((uint32_t) p.msg_desc) |

src/intel/compiler/jay/jay_from_nir.c

@@ -1092,6 +1092,7 @@ jay_emit_mem_access(struct nir_to_jay_state *nj, nir_intrinsic_instr *intr)
    jay_SEND(b, .sfid = sfid, .msg_desc = desc, .srcs = srcs,
             .nr_srcs = jay_is_null(data) ? 1 : 2, .dst = tmp, .type = data_type,
             .src_type = { offset_type, data_type }, .uniform = uniform,
+            .pure = nir_intrinsic_can_reorder(intr),
             .bindless = surf_type == LSC_ADDR_SURFTYPE_BSS, .ex_desc = ex_desc,
             .ex_desc_imm = ex_desc_imm);
 
@@ -2025,7 +2026,7 @@ jay_emit_texture(struct nir_to_jay_state *nj, nir_tex_instr *tex)
             .ex_desc = desc_ex_src, .header = header, .srcs = payload,
             .nr_srcs = n_sources, .type = JAY_TYPE_U32,
             .src_type = { src_type }, .dst = tmp, .uniform = payload_uniform,
-            .bindless = surface_bindless);
+            .bindless = surface_bindless, .pure = true);
 
    /* If we sampled into a temporary, copy out to the final */
    if (residency) {

src/intel/compiler/jay/jay_opcodes.py

@@ -143,9 +143,11 @@ op('send', 4, None, Props.SIDE_EFFECTS, [
     'bool check_tdr',
     'bool uniform',
     'bool bindless',
+    'bool pure',
     'enum jay_type type_0',
     'enum jay_type type_1',
     'uint8_t ex_mlen',
+    'bool pad[3]',
     'uint32_t ex_desc_imm',
 ])