From 7bd24d951a69292b5a8090000541ece2142591ef Mon Sep 17 00:00:00 2001
From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Fri, 13 Apr 2018 15:18:26 -0400
Subject: [PATCH] glsl_to_tgsi: try harder to lower unsupported
 ir_binop_vector_extract
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This fixes some piglits.

Cc: 18.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
---
 src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 01a58d7d2c6..b321112cf88 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -7124,6 +7124,11 @@ st_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
          } while (progress);
       }
 
+      /* Do this again to lower ir_binop_vector_extract introduced
+       * by optimization passes.
+       */
+      do_vec_index_to_cond_assign(ir);
+
       validate_ir_tree(ir);
    }
 
-- 
2.30.2