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authorJason Ekstrand <[email protected]>2018-11-28 17:27:57 -0600
committerJason Ekstrand <[email protected]>2019-01-08 00:38:30 +0000
commit7e85480a67eea965481266bf4bcdb690b44e19bd (patch)
treebdc4b826f7b4807e2f43fb691dbfbc4002f5ab3d /src/compiler
parent78d80f7db2fab78b1af96d5acf216d71448d7972 (diff)
nir/remove_dead_variables: Properly handle deref casts
We already detect any incomplete deref chains (where the deref is used for something other than another deref or a load/store) and flag the variable as used thanks to deref_used_for_not_store. All that's left to do is to properly skip casts when cleaning up. Reviewed-by: Alejandro PiƱeiro <[email protected]> Reviewed-by: Caio Marcelo de Oliveira Filho <[email protected]>
Diffstat (limited to 'src/compiler')
-rw-r--r--src/compiler/nir/nir_remove_dead_variables.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_remove_dead_variables.c b/src/compiler/nir/nir_remove_dead_variables.c
index fadc51a6977..5e972491a1c 100644
--- a/src/compiler/nir/nir_remove_dead_variables.c
+++ b/src/compiler/nir/nir_remove_dead_variables.c
@@ -103,6 +103,9 @@ remove_dead_var_writes(nir_shader *shader, struct set *live)
switch (instr->type) {
case nir_instr_type_deref: {
nir_deref_instr *deref = nir_instr_as_deref(instr);
+ if (deref->deref_type == nir_deref_type_cast &&
+ !nir_deref_instr_parent(deref))
+ continue;
nir_variable_mode parent_mode;
if (deref->deref_type == nir_deref_type_var)