diff --git a/src/imagination/rogue/passes/rogue_schedule_instr_groups.c b/src/imagination/rogue/passes/rogue_schedule_instr_groups.c
index 200542ce394..fe06b5bb9d5 100644
--- a/src/imagination/rogue/passes/rogue_schedule_instr_groups.c
+++ b/src/imagination/rogue/passes/rogue_schedule_instr_groups.c
@@ -146,7 +146,7 @@ static void rogue_lower_instr_group_io(rogue_instr *instr,
       break;
 
    default:
-      unreachable("Invalid instruction group type.");
+      unreachable("Unsupported instruction group type.");
    }
 }
 
@@ -350,7 +350,7 @@ static void rogue_calc_srcs_size(rogue_instr_group *group, bool upper_srcs)
             break;
 
          default:
-            unreachable("IS0 set to invalid value.");
+            unreachable("IS0 set to unsupported value.");
          }
       }
    }
@@ -438,7 +438,7 @@ static void rogue_calc_alu_instrs_size(rogue_instr_group *group,
       break;
 
    default:
-      unreachable("Invalid alu op.");
+      unreachable("Unsupported alu op.");
    }
 }
 #undef OM
@@ -466,7 +466,7 @@ static void rogue_calc_backend_instrs_size(rogue_instr_group *group,
       break;
 
    default:
-      unreachable("Invalid backend op.");
+      unreachable("Unsupported backend op.");
    }
 }
 
@@ -484,7 +484,7 @@ static void rogue_calc_ctrl_instrs_size(rogue_instr_group *group,
       break;
 
    default:
-      unreachable("Invalid ctrl op.");
+      unreachable("Unsupported ctrl op.");
    }
 }
 
@@ -509,7 +509,7 @@ static void rogue_calc_instrs_size(rogue_instr_group *group)
          break;
 
       default:
-         unreachable("Invalid instruction type.");
+         unreachable("Unsupported instruction type.");
       }
 
       group->size.total += group->size.instrs[p];
@@ -619,7 +619,7 @@ bool rogue_schedule_instr_groups(rogue_shader *shader, bool multi_instr_groups)
             break;
 
          default:
-            unreachable("Invalid instruction type.");
+            unreachable("Unsupported instruction type.");
          }
 
          rogue_instr_group *group = rogue_instr_group_create(block, group_alu);
diff --git a/src/imagination/rogue/rogue.c b/src/imagination/rogue/rogue.c
index 7d062baf724..ddb8f88040f 100644
--- a/src/imagination/rogue/rogue.c
+++ b/src/imagination/rogue/rogue.c
@@ -659,7 +659,7 @@ void rogue_link_instr_write(rogue_instr *instr)
             rogue_regarray *regarray = alu->dst[i].ref.regarray;
             rogue_link_instr_write_regarray(instr, writearray, regarray, 0);
          } else {
-            unreachable("Invalid destination reference type.");
+            unreachable("Unsupported destination reference type.");
          }
       }
 
@@ -680,7 +680,7 @@ void rogue_link_instr_write(rogue_instr *instr)
             rogue_regarray *regarray = backend->dst[i].ref.regarray;
             rogue_link_instr_write_regarray(instr, writearray, regarray, i);
          } else {
-            unreachable("Invalid destination reference type.");
+            unreachable("Unsupported destination reference type.");
          }
       }
 
@@ -701,7 +701,7 @@ void rogue_link_instr_write(rogue_instr *instr)
             rogue_regarray *regarray = ctrl->dst[i].ref.regarray;
             rogue_link_instr_write_regarray(instr, writearray, regarray, i);
          } else {
-            unreachable("Invalid destination reference type.");
+            unreachable("Unsupported destination reference type.");
          }
       }
 
@@ -709,7 +709,7 @@ void rogue_link_instr_write(rogue_instr *instr)
    }
 
    default:
-      unreachable("Invalid instruction type.");
+      unreachable("Unsupported instruction type.");
    }
 }
 
@@ -803,7 +803,7 @@ void rogue_link_instr_use(rogue_instr *instr)
    }
 
    default:
-      unreachable("Invalid instruction type.");
+      unreachable("Unsupported instruction type.");
    }
 }
 
@@ -829,7 +829,7 @@ void rogue_unlink_instr_write(rogue_instr *instr)
             struct util_dynarray **writearray = &alu->dst_write[i].regarray;
             rogue_unlink_instr_write_regarray(instr, writearray);
          } else {
-            unreachable("Invalid destination reference type.");
+            unreachable("Unsupported destination reference type.");
          }
       }
 
@@ -848,7 +848,7 @@ void rogue_unlink_instr_write(rogue_instr *instr)
             struct util_dynarray **writearray = &backend->dst_write[i].regarray;
             rogue_unlink_instr_write_regarray(instr, writearray);
          } else {
-            unreachable("Invalid destination reference type.");
+            unreachable("Unsupported destination reference type.");
          }
       }
 
@@ -867,7 +867,7 @@ void rogue_unlink_instr_write(rogue_instr *instr)
             struct util_dynarray **writearray = &ctrl->dst_write[i].regarray;
             rogue_unlink_instr_write_regarray(instr, writearray);
          } else {
-            unreachable("Invalid destination reference type.");
+            unreachable("Unsupported destination reference type.");
          }
       }
 
@@ -875,7 +875,7 @@ void rogue_unlink_instr_write(rogue_instr *instr)
    }
 
    default:
-      unreachable("Invalid instruction type.");
+      unreachable("Unsupported instruction type.");
    }
 }
 
@@ -959,7 +959,7 @@ void rogue_unlink_instr_use(rogue_instr *instr)
    }
 
    default:
-      unreachable("Invalid instruction type.");
+      unreachable("Unsupported instruction type.");
    }
 }
 
diff --git a/src/imagination/rogue/rogue.h b/src/imagination/rogue/rogue.h
index f3ca828fea5..5ca20420111 100644
--- a/src/imagination/rogue/rogue.h
+++ b/src/imagination/rogue/rogue.h
@@ -30,8 +30,6 @@
  * \brief Main header.
  */
 
-/* TODO NEXT: In "unreachable"s, replace "invalid" with "unsupported". */
-
 #include "compiler/nir/nir.h"
 #include "compiler/shader_enums.h"
 #include "compiler/spirv/nir_spirv.h"
@@ -1565,7 +1563,7 @@ rogue_instr_group_io_sel_ref(rogue_instr_group_io_sel *map, enum rogue_io io)
       return &map->dsts[io - ROGUE_IO_W0];
    else if (rogue_io_is_iss(io))
       return &map->iss[io - ROGUE_IO_IS0];
-   unreachable("Invalid io.");
+   unreachable("Unsupported io.");
 }
 
 /** Rogue instruction group. */
@@ -2249,7 +2247,7 @@ static inline unsigned rogue_instr_supported_phases(const rogue_instr *instr)
    }
 
    default:
-      unreachable("Invalid instruction type.");
+      unreachable("Unsupported instruction type.");
    }
 
    return supported_phases;
diff --git a/src/imagination/rogue/rogue_build_data.c b/src/imagination/rogue/rogue_build_data.c
index ae403472ae4..c615f77967a 100644
--- a/src/imagination/rogue/rogue_build_data.c
+++ b/src/imagination/rogue/rogue_build_data.c
@@ -337,7 +337,7 @@ static void collect_io_data_vs(struct rogue_common_build_data *common_data,
    /* Process outputs. */
 
    /* We should always have at least a position variable. */
-   assert(num_outputs > 0 && "Invalid number of vertex shader outputs.");
+   assert(num_outputs > 0 && "Unsupported number of vertex shader outputs.");
 
    nir_foreach_shader_out_variable (var, nir) {
       unsigned components = glsl_get_components(var->type);
diff --git a/src/imagination/rogue/rogue_encode.c b/src/imagination/rogue/rogue_encode.c
index 17f781a87b0..383d0911dbb 100644
--- a/src/imagination/rogue/rogue_encode.c
+++ b/src/imagination/rogue/rogue_encode.c
@@ -64,7 +64,7 @@ static unsigned rogue_calc_da(const rogue_instr_group *group)
       }
 
    } else {
-      unreachable("Invalid instruction group ALU.");
+      unreachable("Unsupported instruction group ALU.");
    }
 
    return da;
@@ -107,7 +107,7 @@ static void rogue_encode_instr_group_header(rogue_instr_group *group,
       break;
 
    default:
-      unreachable("Invalid condition code.");
+      unreachable("Unsupported condition code.");
    }
 
    h.cc = cc.cc;
@@ -159,12 +159,12 @@ static void rogue_encode_instr_group_header(rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid ctrl op.");
+         unreachable("Unsupported ctrl op.");
       }
       break;
 
    default:
-      unreachable("Invalid instruction group ALU.");
+      unreachable("Unsupported instruction group ALU.");
    }
 
    if (group->header.alu != ROGUE_ALU_CONTROL) {
@@ -256,7 +256,7 @@ static void rogue_encode_alu_instr(const rogue_alu_instr *alu,
       break;
 
    default:
-      unreachable("Invalid alu op.");
+      unreachable("Unsupported alu op.");
    }
 }
 #undef OM
@@ -313,7 +313,7 @@ static void rogue_encode_backend_instr(const rogue_backend_instr *backend,
       break;
 
    default:
-      unreachable("Invalid backend op.");
+      unreachable("Unsupported backend op.");
    }
 }
 #undef OM
@@ -329,7 +329,7 @@ static void rogue_encode_ctrl_instr(const rogue_ctrl_instr *ctrl,
       break;
 
    default:
-      unreachable("Invalid ctrl op.");
+      unreachable("Unsupported ctrl op.");
    }
 }
 
@@ -367,7 +367,7 @@ static void rogue_encode_instr_group_instrs(rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid instruction type.");
+         unreachable("Unsupported instruction type.");
       }
 
       util_dynarray_append_mem(binary, group->size.instrs[p], &instr_encoding);
@@ -410,7 +410,7 @@ static void rogue_encode_source_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("IS0 set to invalid value.");
+         unreachable("IS0 set to unsupported value.");
       }
    }
 
@@ -466,7 +466,7 @@ static void rogue_encode_source_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid source/bytes combination.");
+         unreachable("Unsupported source/bytes combination.");
       }
       break;
 
@@ -507,7 +507,7 @@ static void rogue_encode_source_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid source/bytes combination.");
+         unreachable("Unsupported source/bytes combination.");
       }
       break;
 
@@ -560,12 +560,12 @@ static void rogue_encode_source_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid source/bytes combination.");
+         unreachable("Unsupported source/bytes combination.");
       }
       break;
 
    default:
-      unreachable("Invalid source/bytes combination.");
+      unreachable("Unsupported source/bytes combination.");
    }
 }
 
@@ -604,7 +604,7 @@ static void rogue_encode_dest_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid dest/bytes combination.");
+         unreachable("Unsupported dest/bytes combination.");
       }
       break;
    }
@@ -642,12 +642,12 @@ static void rogue_encode_dest_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid dest/bytes combination.");
+         unreachable("Unsupported dest/bytes combination.");
       }
    } break;
 
    default:
-      unreachable("Invalid dest/bytes combination.");
+      unreachable("Unsupported dest/bytes combination.");
    }
 }
 
@@ -666,7 +666,7 @@ static void rogue_encode_iss_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid setting for IS1.");
+         unreachable("Unsupported setting for IS1.");
       }
 
    if (rogue_ref_is_io(&io_sel->iss[2]))
@@ -679,7 +679,7 @@ static void rogue_encode_iss_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid setting for IS2.");
+         unreachable("Unsupported setting for IS2.");
       }
 
    if (rogue_ref_is_io(&io_sel->iss[3]))
@@ -698,7 +698,7 @@ static void rogue_encode_iss_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid setting for IS3.");
+         unreachable("Unsupported setting for IS3.");
       }
 
    if (rogue_ref_is_io(&io_sel->iss[4]))
@@ -717,7 +717,7 @@ static void rogue_encode_iss_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid setting for IS4.");
+         unreachable("Unsupported setting for IS4.");
       }
 
    if (rogue_ref_is_io(&io_sel->iss[5]))
@@ -736,7 +736,7 @@ static void rogue_encode_iss_map(const rogue_instr_group *group,
          break;
 
       default:
-         unreachable("Invalid setting for IS5.");
+         unreachable("Unsupported setting for IS5.");
       }
 }
 
diff --git a/src/imagination/rogue/rogue_print.c b/src/imagination/rogue/rogue_print.c
index 4624cae9935..975e99cd9e4 100644
--- a/src/imagination/rogue/rogue_print.c
+++ b/src/imagination/rogue/rogue_print.c
@@ -203,7 +203,7 @@ static inline void rogue_print_ref(FILE *fp, const rogue_ref *ref)
       break;
 
    default:
-      unreachable("Invalid ref type.");
+      unreachable("Unsupported ref type.");
    }
 }
 
@@ -399,7 +399,7 @@ void rogue_print_instr(FILE *fp, const rogue_instr *instr)
       break;
 
    default:
-      unreachable("Invalid instruction type.");
+      unreachable("Unsupported instruction type.");
    }
    RESET(fp);
 
@@ -444,7 +444,7 @@ rogue_print_instr_group_io_sel(FILE *fp, const rogue_instr_group_io_sel *io_sel)
       else if (rogue_ref_is_io(&io_sel->srcs[i]))
          rogue_print_io(fp, io_sel->srcs[i].io);
       else
-         unreachable("Invalid src map.");
+         unreachable("Unsupported src map.");
    }
    if (present)
       fputs(" ", fp);
@@ -470,7 +470,7 @@ rogue_print_instr_group_io_sel(FILE *fp, const rogue_instr_group_io_sel *io_sel)
       else if (rogue_ref_is_io(&io_sel->iss[i]))
          rogue_print_io(fp, io_sel->iss[i].io);
       else
-         unreachable("Invalid iss map.");
+         unreachable("Unsupported iss map.");
    }
    if (present)
       fputs(" ", fp);
@@ -494,7 +494,7 @@ rogue_print_instr_group_io_sel(FILE *fp, const rogue_instr_group_io_sel *io_sel)
       else if (rogue_ref_is_io(&io_sel->dsts[i]))
          rogue_print_io(fp, io_sel->dsts[i].io);
       else
-         unreachable("Invalid dst map.");
+         unreachable("Unsupported dst map.");
    }
    if (present)
       fputs(" ", fp);
@@ -524,7 +524,7 @@ rogue_print_instr_group_header(FILE *fp, const rogue_instr_group *group)
       break;
 
    default:
-      unreachable("Invalid instruction group ALU.");
+      unreachable("Unsupported instruction group ALU.");
    }
 
    if (group->header.end)
diff --git a/src/imagination/rogue/tools/vk_compiler.c b/src/imagination/rogue/tools/vk_compiler.c
index 5bd5f936942..73c0723bd1a 100644
--- a/src/imagination/rogue/tools/vk_compiler.c
+++ b/src/imagination/rogue/tools/vk_compiler.c
@@ -122,7 +122,7 @@ static bool parse_cmdline(int argc, char *argv[], struct compiler_opts *opts)
          else if (!strcmp(optarg, "vert") || !strcmp(optarg, "v"))
             opts->stage = MESA_SHADER_VERTEX;
          else {
-            fprintf(stderr, "Invalid stage \"%s\".\n", optarg);
+            fprintf(stderr, "Unsupported stage \"%s\".\n", optarg);
             usage(argv[0]);
             return false;
          }