swift234

Add the swift AA pass to the LLVM pass managers called in IRGen.

These are -O results which differ by >= 1.0%

benchmark``````,`````````````baserun0``,````````optrun0```,`````````````delta,``speedup
Ackermann``````,`````````````1680.00```,````````1654.00```,`````````````26.00```,````````1.6%
ArrayLiteral```,`````````````887.00````,````````866.00````,`````````````21.00```,````````2.4%
Ary````````````,`````````````1143.00```,````````1120.00```,`````````````23.00```,````````2.1%
Ary3```````````,`````````````1221.00```,````````1191.00```,`````````````30.00```,````````2.5%
DeltaBlue``````,`````````````2279.00```,````````2219.00```,`````````````60.00```,````````2.7%
Dictionary`````,`````````````518.00````,````````489.00````,`````````````29.00```,````````5.9%
Dictionary2````,`````````````403.00````,````````380.00````,`````````````23.00```,````````6.1%
Dictionary3````,`````````````398.00````,````````373.00````,`````````````25.00```,````````6.7%
EditDistance```,`````````````1388.00```,````````1346.00```,`````````````42.00```,````````3.1%
Fibonacci``````,`````````````1407.00```,````````1391.00```,`````````````16.00```,````````1.2%
ForLoops```````,`````````````1426.00```,````````1406.00```,`````````````20.00```,````````1.4%
Forest`````````,`````````````793.00````,````````770.00````,`````````````23.00```,````````3.0%
Hash```````````,`````````````683.00````,````````676.00````,`````````````7.00````,````````1.0%
Histogram``````,`````````````369.00````,````````352.00````,`````````````17.00```,````````4.8%
Life```````````,`````````````70.00`````,````````71.00`````,`````````````1.00````,````````-1.4%
MatMul`````````,`````````````250.00````,````````240.00````,`````````````10.00```,````````4.2%
Memset`````````,`````````````44.00`````,````````42.00`````,`````````````2.00````,````````4.8%
MonteCarloE````,`````````````976.00````,````````966.00````,`````````````10.00```,````````1.0%
Phonebook``````,`````````````1530.00```,````````1508.00```,`````````````22.00```,````````1.5%
Prims``````````,`````````````1034.00```,````````1016.00```,`````````````18.00```,````````1.8%
R17315246``````,`````````````809.00````,````````801.00````,`````````````8.00````,````````1.0%
RIPEMD`````````,`````````````767.00````,````````749.00````,`````````````18.00```,````````2.4%
StrCat`````````,`````````````1119.00```,````````1095.00```,`````````````24.00```,````````2.2%
StringBuilder``,`````````````713.00````,````````692.00````,`````````````21.00```,````````3.0%
StringWalk`````,`````````````1229.00```,````````1208.00```,`````````````21.00```,````````1.7%
Totals`````````,`````````````42437.00``,````````41910.00``,`````````````527.00``,````````1.3%
TwoSum`````````,`````````````638.00````,````````631.00````,`````````````7.00````,````````1.1%

Swift SVN r21174