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Jason Ekstrand authored
Before, we were using foreach_dest and switching on whether the destination was an SSA value. This works, except not all destinations are SSA values so we have to special-case ssa_undef instructions. Now that we have a foreach_ssa_def function, we can iterate over all of the register destinations in one pass and iterate over the SSA destinations in a second. This way, if we add other ssa-only instructions, we won't have to worry about adding them to the special case we have for ssa_undef. Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
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