---
src/mesa/drivers/dri/i965/brw_vec4_dead_code_eliminate.cpp | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_dead_code_eliminate.cpp
b/src/mesa/drivers/dri/i965/brw_vec4_dead_code_eliminate.cpp
index 9604e60..5df0d31 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_dead_code_eliminate.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_dead_code_eliminate.cpp
@@ -122,7 +122,8 @@ vec4_visitor::dead_code_eliminate()
}
}
- if (inst->dst.file == GRF && !inst->predicate) {
+ if (inst->dst.file == GRF && !inst->predicate &&
+ inst->regs_written == alloc.sizes[inst->dst.reg]) {
for (int c = 0; c < 4; c++) {
if (inst->dst.writemask & (1 << c)) {
int var = inst->dst.reg * 4 + c;
--
2.1.3
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