[Beignet] [PATCH] GBE: fix an illegal instruction.
Zhigang Gong
zhigang.gong at linux.intel.com
Wed Aug 14 19:56:12 PDT 2013
Per Gen ISA spec:
When ExecSize = Width, VertStride must be set to Width * HorzStride.
For horizontal stride 2 in bottom_half, we always use it simd8 mode,
so we need to set the vertstride to 16 according to the above restrication.
Signed-off-by: Zhigang Gong <zhigang.gong at linux.intel.com>
---
backend/src/backend/gen_register.hpp | 1 +
1 file changed, 1 insertion(+)
diff --git a/backend/src/backend/gen_register.hpp b/backend/src/backend/gen_register.hpp
index c953319..ea1bc06 100644
--- a/backend/src/backend/gen_register.hpp
+++ b/backend/src/backend/gen_register.hpp
@@ -270,6 +270,7 @@ namespace gbe
GenRegister r = *this;
r.type = type == GEN_TYPE_UL ? GEN_TYPE_UD : GEN_TYPE_D;
r.hstride = GEN_HORIZONTAL_STRIDE_2;
+ r.vstride = GEN_VERTICAL_STRIDE_16;
return r;
}
--
1.7.9.5
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