polyjit: minor code cleanups
polyjit: minor code cleanups

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Former-commit-id: 7b0ccfc249882a3e7300a5f0cf5baaec635f6c56 [formerly e435186e362980dfabae8814b7a0491cb1b3419a] [formerly 8630b2820a826fb2219959e3c1fdda280aa414e0 [formerly 6a47656a1be5862739485d6472e7288fa52e62ea]]
Former-commit-id: e01803124c993e9f9966800197a336fbec0d85b4 [formerly f094b7064bd53006b1c828b6db26240f5a060477]
Former-commit-id: bde16a72231d9ec827e7772c87f22eaf40de7f1e
PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild