Commits
John McCall committed a79cee2c541
Revert "Reimplement integer arithmetic overflow checking to use special, error on overflow builtins" This was causing massive failures at run-time. This reverts commit 80081db973ccb7100741fea19ce8e8c116fc410f. Conflicts: lib/SILPasses/ConstantPropagation.cpp test/SILPasses/constant_propagation.swift test/SILPasses/constant_propagation2.sil Swift SVN r9050