vtn: Allow SPIR-V debug options in release builds

As long as no one sets any flags, they cost us virtually nothing.

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30875>

src/compiler/spirv/spirv_to_nir.c

@@ -199,7 +199,6 @@ static const struct spirv_capabilities implemented_capabilities = {
    .WorkgroupMemoryExplicitLayout16BitAccessKHR = true,
 };
 
-#ifndef NDEBUG
 uint32_t mesa_spirv_debug = 0;
 
 static const struct debug_named_value mesa_spirv_debug_control[] = {
@@ -226,6 +225,7 @@ mesa_spirv_debug_init(void)
    call_once(&initialized_debug_flag, initialize_mesa_spirv_debug);
 }
 
+#ifndef NDEBUG
 static enum nir_spirv_debug_level
 vtn_default_log_level(void)
 {
@@ -6845,9 +6845,7 @@ spirv_to_nir(const uint32_t *words, size_t word_count,
              const nir_shader_compiler_options *nir_options)
 
 {
-#ifndef NDEBUG
    mesa_spirv_debug_init();
-#endif
 
    const uint32_t *word_end = words + word_count;
 

src/compiler/spirv/vtn_private.h

@@ -36,11 +36,7 @@
 
 extern uint32_t mesa_spirv_debug;
 
-#ifndef NDEBUG
 #define MESA_SPIRV_DEBUG(flag) unlikely(mesa_spirv_debug & (MESA_SPIRV_DEBUG_ ## flag))
-#else
-#define MESA_SPIRV_DEBUG(flag) false
-#endif
 
 #define MESA_SPIRV_DEBUG_STRUCTURED     (1u << 0)
 #define MESA_SPIRV_DEBUG_VALUES         (1u << 1)