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-rw-r--r--src/mesa/drivers/dri/i965/brw_vec4.cpp6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp b/src/mesa/drivers/dri/i965/brw_vec4.cpp
index cb87fecf8d8..d07e8c558c2 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp
@@ -356,7 +356,11 @@ vec4_visitor::dead_code_eliminate()
inst->dst = dst_reg(retype(brw_null_reg(), inst->dst.type));
break;
default:
- inst->remove();
+ if (inst->writes_flag()) {
+ inst->dst = dst_reg(retype(brw_null_reg(), inst->dst.type));
+ } else {
+ inst->remove();
+ }
break;
}
progress = true;