Hello, Throwing away dominance info is wasteful if it is so easy to fix. The immediate dominators are easily known, and iterate_fix_dominators() can take care of the rest.
And if we're doing to free post-dominance info anyway, do it early to save some work. Bootstrapped&tested on x86_64-unknown-linux-gnu. OK for trunk? Ciao! Steven
switchconv_preserve_dominance_info.diff
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