intel/fs: Add support for a new load_reloc_const intrinsic

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6244>

src/compiler/nir/nir_builder.h

@@ -1386,6 +1386,18 @@ nir_load_param(nir_builder *build, uint32_t param_idx)
    return &load->dest.ssa;
 }
 
+static inline nir_ssa_def *
+nir_load_reloc_const_intel(nir_builder *b, uint32_t id)
+{
+   nir_intrinsic_instr *load =
+      nir_intrinsic_instr_create(b->shader,
+                                 nir_intrinsic_load_reloc_const_intel);
+   nir_intrinsic_set_param_idx(load, id);
+   nir_ssa_dest_init(&load->instr, &load->dest, 1, 32, NULL);
+   nir_builder_instr_insert(b, &load->instr);
+   return &load->dest.ssa;
+}
+
 #include "nir_builder_opcodes.h"
 
 static inline nir_ssa_def *

src/compiler/nir/nir_intrinsics.py

@@ -942,3 +942,7 @@ image("store_raw_intel", src_comp=[1, 0])
 
 # Number of data items being operated on for a SIMD program.
 system_value("simd_width_intel", 1)
+
+# Load a relocatable 32-bit value
+intrinsic("load_reloc_const_intel", dest_comp=1, bit_sizes=[32],
+          indices=[PARAM_IDX], flags=[CAN_ELIMINATE, CAN_REORDER])