[Beignet] [PATCH] Fix the bug when MOV dst's hstride is not 1 and span 2 registers.

[junyan.he at inbox.com]

From: Junyan He <junyan.he at linux.intel.com>

On IVB, the instructions:
    mov (16) r104.0<2>:uw r126.0<8;8,1>:uw { Align1, H1 }
    mov (16) r104.1<2>:uw r111.0<8;8,1>:uw { Align1, H1 }
    mov (16) r106.0<2>:uw r110.0<8;8,1>:uw { Align1, H1 }
    mov (16) r106.1<2>:uw r109.0<8;8,1>:uw { Align1, H1 }
seems just have effect on the first register and have no
effect on the second register. This cause the bitcast fail.

Signed-off-by: Junyan He <junyan.he at linux.intel.com>
---
 backend/src/backend/gen_encoder.cpp |    1 +
 1 file changed, 1 insertion(+)

diff --git a/backend/src/backend/gen_encoder.cpp b/backend/src/backend/gen_encoder.cpp
index 9058e2e..6a7fba1 100644
--- a/backend/src/backend/gen_encoder.cpp
+++ b/backend/src/backend/gen_encoder.cpp
@@ -91,6 +91,7 @@ namespace gbe
     if (p->curr.execWidth != 16) return false;
     if (isVectorOfLongs(dst) == true) return true;
     if (isCrossMoreThan2(dst) == true) return true;
+    if (dst.hstride > GEN_HORIZONTAL_STRIDE_1 && (dst.type == GEN_TYPE_UW || dst.type == GEN_TYPE_W)) return true;
 
     if (src.hstride == GEN_HORIZONTAL_STRIDE_0) return false;
 
-- 
1.7.9.5