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[FIRRTL][CheckCombLoops] don't crash on force+rwprobeop, workaround. #6821

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dtzSiFive
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Unbreak this, at cost of missing loops through force, while the better fix is being worked out.

cc #6820.

Unbreak this, at cost of missing loops through force, while
the better fix is being worked out.

cc llvm#6820.
@dtzSiFive dtzSiFive added the FIRRTL Involving the `firrtl` dialect label Mar 13, 2024
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@prithayan prithayan left a comment

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This is fine as a temporary fix, I am working on handling this case.

@dtzSiFive
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Thank you!

@dtzSiFive dtzSiFive merged commit fea328a into llvm:main Mar 13, 2024
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@dtzSiFive dtzSiFive deleted the fix/check-comb-loops-rwprobe-workaround branch March 13, 2024 18:58
%0 = firrtl.asClock %c0_ui1 : (!firrtl.uint<1>) -> !firrtl.clock
firrtl.ref.force %clock, %c1_ui1, %clockProbe, %0 : !firrtl.clock, !firrtl.uint<1>, !firrtl.clock
}
}
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Can the PR add an XFAIL test (would have to be another file) that is checking that a cycle involving a force is fixed?

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You got it, here: #6823 .

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3 participants