[Beignet] [PATCH] GBE: Fix another Sel.bool issue.

[Ruiling Song]

This is a further fix for previous commit:
6b44815b3519e0b65240991e9f12879b2b63389a
the previous commit un-intentionally place the code under
"if (it != allocatedFlags.end())", in fact, no matter the
condition is true or false, we should both do like this.

Signed-off-by: Ruiling Song <ruiling.song at intel.com>
---
 backend/src/backend/gen_reg_allocation.cpp | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/backend/src/backend/gen_reg_allocation.cpp b/backend/src/backend/gen_reg_allocation.cpp
index 6dd570d..68b7a85 100644
--- a/backend/src/backend/gen_reg_allocation.cpp
+++ b/backend/src/backend/gen_reg_allocation.cpp
@@ -599,6 +599,14 @@ namespace gbe
         // is called a "conditional modifier"). The other instructions just read
         // it
         if (insn.state.physicalFlag == 0) {
+          // SEL.bool instruction, the dst register should be stored in GRF
+          // the pred flag is used by flag register
+          if (insn.opcode == SEL_OP_SEL) {
+            ir::Register dst = insn.dst(0).reg();
+            if (ctx.sel->getRegisterFamily(dst) == ir::FAMILY_BOOL &&
+                allocatedFlags.find(dst) != allocatedFlags.end())
+              allocatedFlags.erase(dst);
+          }
           auto it = allocatedFlags.find(ir::Register(insn.state.flagIndex));
           if (it != allocatedFlags.end()) {
             insn.state.physicalFlag = 1;
@@ -619,11 +627,6 @@ namespace gbe
               }
               insn.extra.function = GEN_CONDITIONAL_NEQ;
             }
-            // SEL.bool instruction, the dst register should be stored in GRF
-            // the pred flag is used by flag register
-            if (insn.opcode == SEL_OP_SEL && ctx.sel->getRegisterFamily(insn.dst(0).reg()) == ir::FAMILY_BOOL) {
-              allocatedFlags.erase(insn.dst(0).reg());
-            }
             // If this is an external bool, we need to validate it if it is not validated yet.
             if ((insn.state.externFlag &&
                  insn.state.predicate != GEN_PREDICATE_NONE))
-- 
2.4.1