[PATCH] D146786: [CodeGenPrepare][RISCV] Correct the MathUsed flag for shouldFormOverflowOp

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Mar 23 23:51:48 PDT 2023

craig.topper created this revision.
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For add, if we match the constant edge case the add isn't used by
the compare so we shouldn't check for 2 users.

For sub, the compare is not a user of the sub so if the sub exists
at all the math is used.

This regresses RISC-V which I will work on other patches for.

  rG LLVM Github Monorepo



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