Mesa (master): nir: Properly invalidate metadata in nir_opt_copy_prop().

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: 0f037bd71ffe083c05cd0867ef54bce91ff84243
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=0f037bd71ffe083c05cd0867ef54bce91ff84243

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Mon Nov  2 21:21:25 2015 -0800

nir: Properly invalidate metadata in nir_opt_copy_prop().

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Jason Ekstrand <jason.ekstrand at intel.com>
Reviewed-by: Eduardo Lima Mitev <elima at igalia.com>
Cc: mesa-stable at lists.freedesktop.org

---

 src/glsl/nir/nir_opt_copy_propagate.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/glsl/nir/nir_opt_copy_propagate.c b/src/glsl/nir/nir_opt_copy_propagate.c
index 96520f8..7d8bdd7 100644
--- a/src/glsl/nir/nir_opt_copy_propagate.c
+++ b/src/glsl/nir/nir_opt_copy_propagate.c
@@ -262,6 +262,12 @@ nir_copy_prop_impl(nir_function_impl *impl)
    bool progress = false;
 
    nir_foreach_block(impl, copy_prop_block, &progress);
+
+   if (progress) {
+      nir_metadata_preserve(impl, nir_metadata_block_index |
+                                  nir_metadata_dominance);
+   }
+
    return progress;
 }