i965/fs: Un-hardcode DEBUG_WM, "FS", and "fragment".

These code paths can (or will) be used for other shader stages.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

src/mesa/drivers/dri/i965/brw_fs.cpp

@@ -810,11 +810,11 @@ fs_visitor::vfail(const char *format, va_list va)
    failed = true;
 
    msg = ralloc_vasprintf(mem_ctx, format, va);
-   msg = ralloc_asprintf(mem_ctx, "FS compile failed: %s\n", msg);
+   msg = ralloc_asprintf(mem_ctx, "%s compile failed: %s\n", stage_abbrev, msg);
 
    this->fail_msg = msg;
 
-   if (INTEL_DEBUG & DEBUG_WM) {
+   if (debug_enabled) {
       fprintf(stderr, "%s",  msg);
    }
 }

src/mesa/drivers/dri/i965/brw_fs_nir.cpp

@@ -124,8 +124,8 @@ fs_visitor::emit_nir_code()
    nir_copy_prop(nir);
    nir_validate_shader(nir);
 
-   if (INTEL_DEBUG & DEBUG_WM) {
-      fprintf(stderr, "NIR (SSA form) for fragment shader:\n");
+   if (unlikely(debug_enabled)) {
+      fprintf(stderr, "NIR (SSA form) for %s shader:\n", stage_name);
       nir_print_shader(nir, stderr);
    }
 
@@ -135,7 +135,8 @@ fs_visitor::emit_nir_code()
                      MESA_DEBUG_SOURCE_SHADER_COMPILER,
                      MESA_DEBUG_TYPE_OTHER,
                      MESA_DEBUG_SEVERITY_NOTIFICATION,
-                     "FS NIR shader: %d inst\n",
+                     "%s NIR shader: %d inst\n",
+                     stage_abbrev,
                      count_nir_instrs(nir));
    }
 
@@ -178,8 +179,8 @@ fs_visitor::emit_nir_code()
       nir_emit_impl(overload->impl);
    }
 
-   if (INTEL_DEBUG & DEBUG_WM) {
-      fprintf(stderr, "NIR (final form) for fragment shader:\n");
+   if (unlikely(debug_enabled)) {
+      fprintf(stderr, "NIR (final form) for %s shader:\n", stage_name);
       nir_print_shader(nir, stderr);
    }