File u_llvmpipe-lp_build_gather_elem_vec-BE-fix-for-3x16-lo.patch of Package Mesa

From 3f993cdf6db5cf344179fcb4fbf899f6ef9a6b2b Mon Sep 17 00:00:00 2001
From: Ben Crocker <bcrocker@redhat.com>
Date: Tue, 30 May 2017 12:34:23 -0400
Subject: [PATCH] llvmpipe: lp_build_gather_elem_vec BE fix for 3x16 load

Fix loading of a 3x16 vector as a single 48-bit load
on big-endian systems (PPC64, S390).

Signed-off-by: Ben Crocker <bcrocker@redhat.com>
---
 src/gallium/auxiliary/gallivm/lp_bld_gather.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_gather.c b/src/gallium/auxiliary/gallivm/lp_bld_gather.c
index ccd0376..8e56e42 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_gather.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_gather.c
@@ -234,13 +234,26 @@ lp_build_gather_elem_vec(struct gallivm_state *gallivm,
           */
          res = LLVMBuildZExt(gallivm->builder, res, dst_elem_type, "");
 
-         if (vector_justify) {
 #ifdef PIPE_ARCH_BIG_ENDIAN
+         if (vector_justify) {
          res = LLVMBuildShl(gallivm->builder, res,
                             LLVMConstInt(dst_elem_type,
                                          dst_type.width - src_width, 0), "");
-#endif
          }
+         if (src_width == 48) {
+            LLVMValueRef shuffles[4] = {
+               lp_build_const_int32(gallivm, 2),
+               lp_build_const_int32(gallivm, 1),
+               lp_build_const_int32(gallivm, 0),
+               lp_build_const_int32(gallivm, 3),
+            };
+            struct lp_type type16 = {FALSE, FALSE, TRUE, FALSE, 16, 4};
+            res = LLVMBuildBitCast(gallivm->builder, res,
+                                   lp_build_vec_type(gallivm, type16), "");
+            res = LLVMBuildShuffleVector(gallivm->builder, res, res, LLVMConstVector(shuffles, 4), "");
+            res = LLVMBuildBitCast(gallivm->builder, res, dst_elem_type, "");
+         }
+#endif
       }
    }
    return res;
-- 
2.7.4