[Mesa-dev] [PATCH 1/7] nir: add nir_var_all enum

[Rob Clark]

Otherwise, passing -1 gets you:

  error: invalid conversion from 'int' to 'nir_variable_mode' [-fpermissive]

Signed-off-by: Rob Clark <robdclark at gmail.com>
---
I was going to convert the enum values to bitmask/flags which could
be OR'd, but that doesn't play nicely w/ nir_variable::data which
tries to stuff this into a 4 bit bitfield.. so just re-sending this
one as-is since it's at least good enough to fix a compiler warn.

 src/glsl/nir/nir.c                  | 4 ++++
 src/glsl/nir/nir.h                  | 1 +
 src/glsl/nir/nir_lower_io.c         | 2 +-
 src/mesa/drivers/dri/i965/brw_nir.c | 3 ++-
 4 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/glsl/nir/nir.c b/src/glsl/nir/nir.c
index bb7a5fa..e1e3f0c 100644
--- a/src/glsl/nir/nir.c
+++ b/src/glsl/nir/nir.c
@@ -107,6 +107,10 @@ void
 nir_shader_add_variable(nir_shader *shader, nir_variable *var)
 {
    switch (var->data.mode) {
+   case nir_var_all:
+      assert(!"invalid mode");
+      break;
+
    case nir_var_local:
       assert(!"nir_shader_add_variable cannot be used for local variables");
       break;
diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h
index ef39df5..e2d75df 100644
--- a/src/glsl/nir/nir.h
+++ b/src/glsl/nir/nir.h
@@ -82,6 +82,7 @@ typedef struct {
 } nir_state_slot;
 
 typedef enum {
+   nir_var_all = -1,
    nir_var_shader_in,
    nir_var_shader_out,
    nir_var_global,
diff --git a/src/glsl/nir/nir_lower_io.c b/src/glsl/nir/nir_lower_io.c
index 688b48f..b4ed857 100644
--- a/src/glsl/nir/nir_lower_io.c
+++ b/src/glsl/nir/nir_lower_io.c
@@ -176,7 +176,7 @@ nir_lower_io_block(nir_block *block, void *void_state)
 
       nir_variable_mode mode = intrin->variables[0]->var->data.mode;
 
-      if (state->mode != -1 && state->mode != mode)
+      if (state->mode != nir_var_all && state->mode != mode)
          continue;
 
       switch (intrin->intrinsic) {
diff --git a/src/mesa/drivers/dri/i965/brw_nir.c b/src/mesa/drivers/dri/i965/brw_nir.c
index dece208..07cb476 100644
--- a/src/mesa/drivers/dri/i965/brw_nir.c
+++ b/src/mesa/drivers/dri/i965/brw_nir.c
@@ -270,7 +270,8 @@ brw_create_nir(struct brw_context *brw,
    nir_assign_var_locations(&nir->uniforms,
                             &nir->num_uniforms,
                             is_scalar ? type_size_scalar : type_size_vec4);
-   nir_lower_io(nir, -1, is_scalar ? type_size_scalar : type_size_vec4);
+   nir_lower_io(nir, nir_var_all,
+                is_scalar ? type_size_scalar : type_size_vec4);
    nir_validate_shader(nir);
 
    nir_remove_dead_variables(nir);
-- 
2.5.0