From: Ilia Mirkin <imir...@alum.mit.edu>
This can't work due to shared inputs and outputs and barriers.
---
src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 57de266..4df6e39 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -5765,7 +5765,11 @@ get_mesa_program(struct gl_context *ctx,
/* Perform optimizations on the instructions in the glsl_to_tgsi_visitor. */
v->simplify_cmp();
- v->copy_propagate();
+
+ if (shader->Type != GL_TESS_CONTROL_SHADER &&
+ shader->Type != GL_TESS_EVALUATION_SHADER)
+ v->copy_propagate();
+
while (v->eliminate_dead_code());
v->merge_two_dsts();
--
2.1.0
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