diff --git a/src/compiler/nir/nir_divergence_analysis.c b/src/compiler/nir/nir_divergence_analysis.c
index f584f595af4..c4340584fd4 100644
--- a/src/compiler/nir/nir_divergence_analysis.c
+++ b/src/compiler/nir/nir_divergence_analysis.c
@@ -351,6 +351,9 @@ visit_intrinsic(nir_intrinsic_instr *instr, struct divergence_state *state)
    case nir_intrinsic_load_constant_base_ptr:
    case nir_intrinsic_load_const_buf_base_addr_lvp:
    case nir_intrinsic_load_max_polygon_intel:
+   case nir_intrinsic_load_fs_start_intel:
+   case nir_intrinsic_load_fs_z_c_intel:
+   case nir_intrinsic_load_fs_z_c0_intel:
    case nir_intrinsic_load_ray_base_mem_addr_intel:
    case nir_intrinsic_load_ray_hw_stack_size_intel:
    case nir_intrinsic_load_per_primitive_remap_intel:
diff --git a/src/compiler/nir/nir_intrinsics.py b/src/compiler/nir/nir_intrinsics.py
index 03baafe9939..2e713fd43bb 100644
--- a/src/compiler/nir/nir_intrinsics.py
+++ b/src/compiler/nir/nir_intrinsics.py
@@ -2484,6 +2484,15 @@ image("store_raw_intel", src_comp=[1, 0])
 # Maximum number of polygons processed in the fragment shader
 system_value("max_polygon_intel", 1, bit_sizes=[32])
 
+# Maximum number of polygons processed in the fragment shader
+intel_fs_values = [
+    (2, "start"), # X/Y coordinate (screen space) for upper-left vertex of a triangle being rasterized
+    (2, "z_c"),   # z_c – Cx/Cy for z plane
+    (1, "z_c0"),  # z_c0 – Co for z plane
+]
+for v in intel_fs_values:
+    system_value("fs_{0}_intel".format(v[1]), v[0], bit_sizes=[32])
+
 # Read the attribute thread payload at a given byte offset
 # src[] = { offset }
 load("attribute_payload_intel", [1], flags=[CAN_ELIMINATE, CAN_REORDER])