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iris: Clone before calling nir_strip and serializing

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This is non-destructive and leaves the debugging information in place.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Kenneth Graunke 2019-05-28 15:39:24 -07:00
parent e1409aead5
commit 6892d2b94a
1 changed files with 8 additions and 6 deletions
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14
src/gallium/drivers/iris/iris_program.c
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@ -1496,18 +1496,20 @@ iris_create_uncompiled_shader(struct pipe_context *ctx,
/* Serialize the NIR to a binary blob that we can hash for the disk
* cache. First, drop unnecessary information (like variable names)
* so the serialized NIR is smaller, and also to let us detect more
* isomorphic shaders when hashing, increasing cache hits.
*
* We skip this step when not using the disk cache, as variable names
* are useful for inspecting and debugging shaders.
* isomorphic shaders when hashing, increasing cache hits. We clone
* the NIR before stripping away this info because it can be useful
* when inspecting and debugging shaders.
*/
nir_strip(nir);
nir_shader *clone = nir_shader_clone(NULL, nir);
nir_strip(clone);
struct blob blob;
blob_init(&blob);
nir_serialize(&blob, ish->nir);
nir_serialize(&blob, clone);
_mesa_sha1_compute(blob.data, blob.size, ish->nir_sha1);
blob_finish(&blob);
ralloc_free(clone);
}
return ish;