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[RISCV] Make RISCVISAInfo::updateMaxELen extension checking more robust. Add inference from V extension. #90650

Merged
merged 1 commit into from
Apr 30, 2024
Merged

[RISCV] Make RISCVISAInfo::updateMaxELen extension checking more robust. Add inference from V extension. #90650

merged 1 commit into from
Apr 30, 2024

Commits on Apr 30, 2024

  1. [RISCV] Make RISCVISAInfo::updateMaxELen extension chekcing more robu… 

    …st. Add inference from V extension.

We weren't fully checking that we parsed Zve*x/f/d correctly. This
could break if new extension is added that starts with Zve.

We also were assuming the Zve64d is present whenever V is so we only
inferred from Zve*. It's more correct to infer ELEN from V itself too.
    @topperc
    topperc committed Apr 30, 2024
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