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The final versions of the br_on_cast and br_on_cast_fail instructions have two
reference type annotations: one for the input type and one for the cast target
type. In the binary format, this is represented as a flags byte followed by two
encoded heap types. Upgrade all of the tests at once to use the new versions of
the instructions and drop support for the old instructions from the text parser.
Keep support in the binary parser to avoid breaking users, though. Drop some
binary tests of deprecated instruction encodings that would be more effort to
update than they're worth.
Re-land with fixes of #5734
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This reverts commit b7b1d0df29df14634d2c680d1d2c351b624b4fbb.
See comment at the end of #5734: It turns out that dropping the old opcodes causes
problems for current users, so let's revert this for now, and later we can figure out
how best to do the update.
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The final versions of the br_on_cast and br_on_cast_fail instructions have two
reference type annotations: one for the input type and one for the cast target
type. In the binary format, this is represented as a flags byte followed by two
encoded heap types. Since these instructions have been in flux for a while, do
not attempt to maintain backward compatibility with older versions of the
instructions. Instead, upgrade all of the tests at once to use the new versions
of the instructions. Drop some binary tests of deprecated instruction encodings
that would be more effort to update than they're worth.
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This new variant of ref.test returns 1 if the input is null.
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We previously supported only the non-standard cast instructions introduced when
we were experimenting with nominal types. Parse the names and opcodes of their
standard counterparts and switch to emitting the standard names and opcodes.
Port all of the tests to use the standard instructions, but add additional tests
showing that the non-standard versions are still parsed correctly.
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