[Beignet] [PATCH] Fix a compare immediate optimize error.

[Yang Rong]

When do LOADI/compare -> compare optimize, IMM src1 will using LOADI type,
but LOADI doesn't  care unsigned or signed. Should use the compare type.

Signed-off-by: Yang Rong <rong.r.yang at intel.com>
---
 backend/src/backend/gen_insn_selection.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/backend/src/backend/gen_insn_selection.cpp b/backend/src/backend/gen_insn_selection.cpp
index 5a6b9fd..335321a 100644
--- a/backend/src/backend/gen_insn_selection.cpp
+++ b/backend/src/backend/gen_insn_selection.cpp
@@ -2528,6 +2528,8 @@ namespace gbe
         const auto &childInsn = cast<LoadImmInstruction>(dag1->insn);
         src0 = sel.selReg(insn.getSrc(0), type);
         src1 = getRegisterFromImmediate(childInsn.getImmediate());
+        if(src1.type != src0.type)
+          src1 = GenRegister::retype(src1, src0.type);
         if (dag0) dag0->isRoot = 1;
       } else {
         src0 = sel.selReg(insn.getSrc(0), type);
-- 
1.8.1.2