Makes 1.18 tests a little happier.
Works around this error:
$ make test GOTESTFLAGS="-run TestTest/EmulatedCortexM3/Pass"
...
main_test.go:520: test error: could not compile: /usr/local/go/src/internal/fuzz/sys_posix.go:19:18: PROT_READ not declared by package syscall
Exporting symbols seems to embed them in the WASM exports section which
causes wasmtime to fail: https://github.com/bytecodealliance/wasmtime/issues/2587
As a workaround, it is possible to specify the `--allow-unknown-exports`
flag on wasmtime.
But as discussed in the above linked issue, this seems to only be a
workaround. For the Rust compiler the fix was to remove the
`--export-dynamic` linker flag when targeting `wasm32-wasi`:
https://github.com/rust-lang/rust/pull/81255
Which is waht this commit does for Tinygo too.
This adds the `Version()` function of the `runtime` package which embeds
the go version that was used to build tinygo.
For programs that are compiled with tinygo the version can be overriden
via the:
`tinygo build -ldflags="-X 'runtime.buildVersion=abc'"` flag.
Otherwise it will continue to use the go version with which tinygo was
compiled.
Moving and exporting this variable from the main to the goenv package
allows us to use it from both the main and the builder package.
This is done in preparation to include the value in `tinygo build`
linker flags, so that we can embed the version and git sha into binaries
built with tinygo.
This test creates a new temp file and writes some bytes into it.
It then opens a new file for the file descriptor of the temp file and
tries to read some bytes out of it.
I didn't see how to run it easily from main_test.go, though I didn't try too hard.
And it doesn't really have a good place to go in Makefile.
So I added a new target tinygo-baremetal, and invoke it from CI at the end of assert-test-linux.
It only adds 7 seconds to the run, should be ok.
These are used in Go 1.18's `testing/internal/testdeps`. Though the
comment says they should exist _everywhere_, there is still a build
constraint, but that seems to be fine.
Previously, the wrong permission bits were emitted by
`tinygo build-library`. This commit fixes that, by `chmod`'ing to
reasonable default permission bits.
Updating them to libclang-13-dev was a good change, but we can go even
further:
* The suggestion didn't apply to MacOS.
* The suggestion would need to be updated with every LLVM release,
which is a maintenance burden.
* The suggestion is wrong when compiling with `-tags=llvm12` for
example to choose a different LLVM version.
Therefore, link to the build documentation instead.
ThinLTO optimizes across LLVM modules at link time. This means that
optimizations (such as inlining and const-propagation) are possible
between C and Go. This makes this change especially useful for CGo, but
not just for CGo. By doing some optimizations at link time, the linker
can discard some unused functions and this leads to a size reduction on
average. It does increase code size in some cases, but that's true for
most optimizations.
I've excluded a number of targets for now (wasm, avr, xtensa, windows,
macos). They can probably be supported with some more work, but that
should be done in separate PRs.
Overall, this change results in an average 3.24% size reduction over all
the tinygo.org/x/drivers smoke tests.
TODO: this commit runs part of the pass pipeline twice. We should set
the PrepareForThinLTO flag in the PassManagerBuilder for even further
reduced code size (0.7%) and improved compilation speed.
The machine outliner introduces a few new opcodes that weren't
previously emitted by LLVM. We need to support these.
This doesn't trigger very often, but it sometimes does. It triggers a
lot more often with ThinLTO enabled.
Update interrupt_esp32c3.go:
make callHandler inline
save and restore MSTATUS along with MEPC
save and restore actual threshold value and call fence
print additional data during exception
This commit adds stubs for the `ExitError` struct of the `exec` package
and `ProcessState.ExitCode()` of the `os` package.
Since the `os/exec` is listed as unsupported, stubbing these methods
and structs should be enough to get programs that use these to compile.
This adds a stub for the `NumCPU()` function from the `runtime`
package.
This change allows code to compile that tries to access this function.
I guess for most hardware boards and WASM setting this value to `1` is
fine. And as far as I can see it shouldn't break or change existing
applications, because the function previously did not exist at all.
This adds the necessary structs and the `ReadBuildInfo()` function to
the runtime/debug module to allow to compile code that tries to access
it.
The stub itself returns ok=false, so that calling code should not try
to read from the nil pointer that is returned instead of the actual
BuildInfo struct.
This function is used by the hash/maphash package.
Unfortunately, I couldn't get the hash/maphash package to pass tests
because it's too slow. I think it hits the quadratic complexity of the
current map implementation.
