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[RISCV] fix RISCVPushPopOptimizer pass #110813

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[RISCV] fix RISCVPushPopOptimizer pass #110813

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Commits on Oct 3, 2024

  1. [RISCV] fix RISCVPushPopOptimizer pass 

    RISCVPushPopOptimizer pass didn't suggest that CFI instructions can be
inserted between cm.pop and ret and couldn't apply optimization in these
cases. The patch fix it and allows the pass to remove CFI instructions and
combine cm.pop and ret into the one instruction: cm.popret or cm.popretz.
    @dlav-sc
    dlav-sc committed Oct 3, 2024
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  2. [RISCV] update tests

    @dlav-sc
    dlav-sc committed Oct 3, 2024
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