Craig Topper 1687a8d83b [X86][SelectionDAG] Add SADDO_CARRY and SSUBO_CARRY to support multipart signed add/sub overflow legalization. ...

This passes existing X86 test but I'm not sure if it handles all type
legalization cases it needs to.

Alternative to D89200

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D89222

2020-10-12 23:18:29 -07:00

84 KiB

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