GBE: allow the bool registers to be expired.

After the previous's extra liveness analysis, we can allow bool
registers to be expired now.

Signed-off-by: Zhigang Gong <zhigang.gong@intel.com>
Reviewed-by: Yang Rong <rong.r.yang@intel.com>

diff --git a/backend/src/backend/gen_reg_allocation.cpp b/backend/src/backend/gen_reg_allocation.cpp
index 4e33240..fedd730 100644 (file)
--- a/backend/src/backend/gen_reg_allocation.cpp
+++ b/backend/src/backend/gen_reg_allocation.cpp
@@ -294,8 +294,7 @@ namespace gbe
         continue;
       }
       // Ignore booleans that were allocated with flags
-      // if (ctx.getRegisterFamily(reg) == ir::FAMILY_BOOL && !grfBooleans.contains(reg)) {
-      if (ctx.sel->getRegisterFamily(reg) == ir::FAMILY_BOOL) {
+      if (ctx.sel->getRegisterFamily(reg) == ir::FAMILY_BOOL && !grfBooleans.contains(reg)) {
         this->expiringID++;
         continue;
       }