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0319be8b02
Use DFS traversal from main to resolve reachable functions. Avoid spurious
"unresolved reference" linker errors for dead helper functions.
It avoid reporting linking error for following shader test. The shader test used
to pass before merge_requests/31137:
[require]
GLSL >= 1.50
[vertex shader]
/* declared but not defined */
vec4 transform_color(vec3 color, float alpha);
/* calls transform_color — but this function is never called from main */
vec4 apply_transform(vec3 color, float alpha)
{
return transform_color(color, alpha);
}
[vertex shader]
in vec4 piglit_vertex;
void main()
{
/* apply_transform is never called here */
gl_Position = piglit_vertex;
}
Signed-off-by: Xinju Li <xinju.li@broadcom.com>
use pass_flags to mark function as reachable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41065>
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| .. | ||
| clc | ||
| glsl | ||
| isaspec | ||
| libcl | ||
| nir | ||
| rust | ||
| spirv | ||
| builtin_types.py | ||
| builtin_types_c.py | ||
| builtin_types_h.py | ||
| glsl_types.c | ||
| glsl_types.h | ||
| list.h | ||
| meson.build | ||
| shader_enums.c | ||
| shader_enums.h | ||
| shader_info.h | ||