tinygo

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Author	SHA1	Message	Date
Ayke van Laethem	30df912565	interp: rewrite entire package For a full explanation, see interp/README.md. In short, this rewrite is a redesign of the partial evaluator which improves it over the previous partial evaluator. The main functional difference is that when interpreting a function, the interpretation can be rolled back when an unsupported instruction is encountered (for example, an actual unknown instruction or a branch on a value that's only known at runtime). This also means that it is no longer necessary to scan functions to see whether they can be interpreted: instead, this package now just tries to interpret it and reverts when it can't go further. This new design has several benefits: * Most errors coming from the interp package are avoided, as it can simply skip the code it can't handle. This has long been an issue. * The memory model has been improved, which means some packages now pass all tests that previously didn't pass them. * Because of a better design, it is in fact a bit faster than the previous version. This means the following packages now pass tests with `tinygo test`: * hash/adler32: previously it would hang in an infinite loop * math/cmplx: previously it resulted in errors This also means that the math/big package can be imported. It would previously fail with a "interp: branch on a non-constant" error.	4 years ago
Ron Evans	b4dd2dbf60	docs: change links in README and remove old ReadTheDocs pages to point to TinyGo.org site Signed-off-by: Ron Evans <ron@hybridgroup.com>	6 years ago
Ayke van Laethem	bb3d05169d	interp: add new compile-time package initialization interpreter This interpreter currently complements the Go SSA level interpreter. It may stay complementary or may be the only interpreter in the future. This interpreter is experimental and not yet finished (there are known bugs!) so it is disabled by default. It can be enabled by passing the -initinterp flag. The goal is to be able to run all initializations at compile time except for the ones having side effects. This mostly works except perhaps for a few edge cases. In the future, this interpeter may be used to actually run regular Go code, perhaps in a shell.	6 years ago

Author

SHA1

Message

Date

Ayke van Laethem

30df912565

interp: rewrite entire package

For a full explanation, see interp/README.md. In short, this rewrite is
a redesign of the partial evaluator which improves it over the previous
partial evaluator. The main functional difference is that when
interpreting a function, the interpretation can be rolled back when an
unsupported instruction is encountered (for example, an actual unknown
instruction or a branch on a value that's only known at runtime). This
also means that it is no longer necessary to scan functions to see
whether they can be interpreted: instead, this package now just tries to
interpret it and reverts when it can't go further.

This new design has several benefits:

  * Most errors coming from the interp package are avoided, as it can
    simply skip the code it can't handle. This has long been an issue.
  * The memory model has been improved, which means some packages now
    pass all tests that previously didn't pass them.
  * Because of a better design, it is in fact a bit faster than the
    previous version.

This means the following packages now pass tests with `tinygo test`:

  * hash/adler32: previously it would hang in an infinite loop
  * math/cmplx: previously it resulted in errors

This also means that the math/big package can be imported. It would
previously fail with a "interp: branch on a non-constant" error.

4 years ago

Ron Evans

b4dd2dbf60

docs: change links in README and remove old ReadTheDocs pages to point to TinyGo.org site

Signed-off-by: Ron Evans <ron@hybridgroup.com>

6 years ago

Ayke van Laethem

bb3d05169d

interp: add new compile-time package initialization interpreter

This interpreter currently complements the Go SSA level interpreter. It
may stay complementary or may be the only interpreter in the future.

This interpreter is experimental and not yet finished (there are known
bugs!) so it is disabled by default. It can be enabled by passing the
-initinterp flag.

The goal is to be able to run all initializations at compile time except
for the ones having side effects. This mostly works except perhaps for a
few edge cases.

In the future, this interpeter may be used to actually run regular Go
code, perhaps in a shell.

6 years ago

3 Commits (1e9a41dc9414a963d3d4fbcea422506027e3e6a3)