nir: Silence unused parameter warnings

These cases had the parameter removed:

nir/nir_lower_vec_to_movs.c: In function ‘try_coalesce’:
nir/nir_lower_vec_to_movs.c:124:66: warning: unused parameter ‘shader’ [-Wunused-parameter]
 try_coalesce(nir_alu_instr *vec, unsigned start_idx, nir_shader *shader)
                                                                  ^
nir/nir_lower_io.c: In function ‘load_op’:
nir/nir_lower_io.c:147:32: warning: unused parameter ‘state’ [-Wunused-parameter]
 load_op(struct lower_io_state *state,
                                ^

These cases had the parameter (void) silenced because the parameter was
necessary for an interface:

nir/glsl_to_nir.cpp:1900:32: warning: unused parameter 'ir' [-Wunused-parameter]
 nir_visitor::visit(ir_barrier *ir)
                                ^
nir/nir.c: In function ‘remove_use_cb’:
nir/nir.c:802:35: warning: unused parameter ‘state’ [-Wunused-parameter]
 remove_use_cb(nir_src *src, void *state)
                                   ^
nir/nir.c: In function ‘remove_def_cb’:
nir/nir.c:811:37: warning: unused parameter ‘state’ [-Wunused-parameter]
 remove_def_cb(nir_dest *dest, void *state)
                                     ^

Number of total warnings in my build reduced from 2543 to 2538
(reduction of 5).

Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/compiler/nir/glsl_to_nir.cpp b/src/compiler/nir/glsl_to_nir.cpp
index aeeba5d5573..fb1d4218e33 100644
--- a/src/compiler/nir/glsl_to_nir.cpp
+++ b/src/compiler/nir/glsl_to_nir.cpp
@@ -2007,7 +2007,7 @@ nir_visitor::visit(ir_dereference_array *ir)
 }
 
 void
-nir_visitor::visit(ir_barrier *ir)
+nir_visitor::visit(ir_barrier *)
 {
    nir_intrinsic_instr *instr =
       nir_intrinsic_instr_create(this->shader, nir_intrinsic_barrier);