nvk: Report NIR shader in pipeline executable properties

All other drivers in mesa report NIR for
VK_KHR_pipeline_executable_properties let's do the same as this can be
useful to see what we have right before compilation.

Signed-off-by: Mary Guillemard <mary@mary.zone>
Reviewed-by: Mel Henning <mhenning@darkrefraction.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39772>

src/nouveau/vulkan/nvk_shader.c

@@ -520,6 +520,9 @@ nvk_compile_nir(struct nvk_device *dev, nir_shader *nir,
       shader->data_size = data_size;
    }
 
+   if (dump_asm)
+      shader->nir_str = nir_shader_as_str(nir, NULL);
+
    return VK_SUCCESS;
 }
 
@@ -870,6 +873,7 @@ nvk_shader_destroy(struct vk_device *vk_dev,
    }
 
    free((void *)shader->data_ptr);
+   ralloc_free((void *)shader->nir_str);
 
    vk_shader_free(&dev->vk, pAllocator, &shader->vk);
 }
@@ -1273,6 +1277,15 @@ nvk_shader_get_executable_internal_representations(
 
    assert(executable_index == 0);
 
+   if (shader->nir_str != NULL) {
+      vk_outarray_append_typed(VkPipelineExecutableInternalRepresentationKHR, &out, ir) {
+         WRITE_STR(ir->name, "NIR shader");
+         WRITE_STR(ir->description, "NIR shader");
+         if (!write_ir_text(ir, shader->nir_str))
+            incomplete_text = true;
+      }
+   }
+
    if (shader->nak != NULL && shader->nak->asm_str != NULL) {
       vk_outarray_append_typed(VkPipelineExecutableInternalRepresentationKHR, &out, ir) {
          WRITE_STR(ir->name, "NAK assembly");

src/nouveau/vulkan/nvk_shader.h

@@ -94,6 +94,7 @@ struct nvk_shader {
    float min_sample_shading;
 
    struct nak_shader_bin *nak;
+   const char *nir_str;
    const void *code_ptr;
    uint32_t code_size;