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[RISCV] Don't use DCI.CombineTo to replace a single result

Authored by craig.topper on Oct 29 2020, 9:34 PM.



Just return the new node which is the standard practice.

I also noticed what appeared to be an unnecessary attempt at creating an ANY_EXTEND where the type should already be correct. I replace it with assert to verify the type.

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craig.topper created this revision.Oct 29 2020, 9:34 PM
Herald added a project: Restricted Project. · View Herald TranscriptOct 29 2020, 9:34 PM
craig.topper requested review of this revision.Oct 29 2020, 9:34 PM
frasercrmck accepted this revision.Oct 30 2020, 2:11 AM

LGTM. That operand to FMV_W_X_RV64 does indeed look like it should always be i64.

This revision is now accepted and ready to land.Oct 30 2020, 2:11 AM

Should this be marked [NFC]?