The compiler-resolved Node throws (error.nodeThrow, the argument and
property type throws, undeclared global reads) always leave an exception
pending, yet each was followed by the generic pending test and a branch.
tsc-ts has 12,177 such sites, mostly the mismatch arms of checked casts
and member reads of possibly-undefined values. Unwind unconditionally
instead; emission continues in a block without predecessors so the
caller's remaining instructions stay well-formed, and LLVM deletes it.
Malte Ubl
2f3e023bc9