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-rw-r--r--src/glsl/opt_dead_code_local.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/glsl/opt_dead_code_local.cpp b/src/glsl/opt_dead_code_local.cpp
index 4770fcf..ee9f22c 100644
--- a/src/glsl/opt_dead_code_local.cpp
+++ b/src/glsl/opt_dead_code_local.cpp
@@ -197,6 +197,11 @@ process_assignment(void *ctx, ir_assignment *ir, exec_list *assignments)
if (entry->lhs != var)
continue;
+ /* Skip if the assignment we're trying to eliminate isn't a plain
+ * variable deref. */
+ if (entry->ir->lhs->ir_type != ir_type_dereference_variable)
+ continue;
+
int remove = entry->unused & ir->write_mask;
if (debug) {
printf("%s 0x%01x - 0x%01x = 0x%01x\n",