Remove setting EOT for fences.

Fences are not output messages, so they should not be EOT.

Author: skarczew

visa/G4_IR.hpp

@@ -1313,7 +1313,8 @@ class G4_InstSend : public G4_INST {
   bool canBeEOT() const {
     bool canEOT = getMsgDesc()->getDstLenRegs() == 0 &&
                   (getMsgDesc()->getSFID() != SFID::NULL_SFID &&
-                   getMsgDesc()->getSFID() != SFID::SAMPLER);
+                   getMsgDesc()->getSFID() != SFID::SAMPLER &&
+                  !getMsgDesc()->isFence());
 
     return canEOT;
   }