gapil/compiler: Assert that expressions return the correct type.
gapil/compiler: Assert that expressions return the correct type.

Qining/gapid,google/gapid,pmuetschard/gapid,Qining/gapid,google/agi,google/agi,google/agi,pmuetschard/gapid,pmuetschard/gapid,pmuetschard/gapid,Qining/gapid,Qining/gapid,Qining/gapid,google/gapid,google/agi,google/gapid,google/gapid,google/gapid,google/agi,Qining/gapid,google/gapid,pmuetschard/gapid,Qining/gapid,google/agi,google/gapid,pmuetschard/gapid,pmuetschard/gapid,google/agi,google/gapid,google/agi,Qining/gapid,pmuetschard/gapid