`return` statements use a new function `nodeMayEvalToError` which does
some basic checks on the AST node to return never, always, or maybe.
Depending on this result, AstGen skips the errdefers, always includes
the errdefers, or emits a conditional branch to check whether the return
value is an error that Sema will have to evaluate.
Closes#8821
Unblocks #9047
Handle linker args joined with a = like -Wl,-rpath=foo
Update existing args --major-os-version, --minor-os-version,
--major-subsystem-version and --minor-subsytem-version to work with the
new parsing.
Also handle -Wl,--script in addition to -Wl,-T
NetBSD expects 2 PT_LOAD segments in a shared object, otherwise
ld.elf_so fails to load, emitting a general "not found" error.
Workaround issue by adding args `--no-rosegment` and `-znorelro`.
see #9109
Previously, Zig did not properly communicate the target CPU features for
RISC-V to clang assembler, because Clang has a different way to pass CPU
features for C code and for assembly code. This commit makes Zig pass a
RISC-V -march flag in order to communicate CPU features to Clang when
compiling assembly files.
* stage1 backend allows configuring the uwtables function attr
via a flag rather than its own logic.
* stage2 defaults to enabling uwtable attr when
linking libunwind, or always on windows
* stage2 makes link_eh_frame_hdr true automatically if uwtable
attr is set to be on for zig functions
* CLI: add -funwind-tables and -fno-unwind-tables to allow the user to
override the defaults.
* hook it up to `zig cc`
closes#9046
closes#9034
These options were listed under the
"Debug Options (Zig Compiler Development)" heading. Anything in this
section should be considered unstable and can be modified at any time
at any developer's discretion.
Zig has detection for when it is accidentally being called recursively
when trying to find the native libc installation. However it was not
working, resulting in a cryptic failure, because zig tried to execute
a command which had spaces in it rather than tokenizing it.
This improves the user experience of `zig cc` for systems that Zig
does not support cross-compiling for.
Closes#8960
When linking with -lfoo syntax, this indicates to Zig that the
dependency should either be provided by Zig, or it should be dynamically
provided by the system.
For windows-gnu targets, the search path was "foo.lib". Now it
additionally looks for "libfoo.dll.a".
Closes#7799
LLVM time profiler can collect time traces and present them in a
hierarchical view. Which breakdowns the time spent in each Pass or even
IR unit. The result is also exported into a format that can be easily
visualized by the Chrome browser.
Currently this features is controlled by the following environment
variables:
- `ZIG_LLVM_TIME_TRACE_FILE` toggles this feature and specifies the
output time trace file.
- `ZIG_LLVM_TIME_TRACE_GRANULARITY` controls the time granularity in
ms (default to 500).
- hash/eql functions moved into a Context object
- *Context functions pass an explicit context
- *Adapted functions pass specialized keys and contexts
- new getPtr() function returns a pointer to value
- remove functions renamed to fetchRemove
- new remove functions return bool
- removeAssertDiscard deleted, use assert(remove(...)) instead
- Keys and values are stored in separate arrays
- Entry is now {*K, *V}, the new KV is {K, V}
- BufSet/BufMap functions renamed to match other set/map types
- fixed iterating-while-modifying bug in src/link/C.zig
Instead require `1e9` and `0x1p9`, disallowing the trailing dot.
This change to the grammar is consistent with forbidding `1.` and `0x1.`
as float literals and ensures there is only one way to do things here.
- deprecates `std.Thread.spinLoopHint` and moves it to `std.atomic.spinLoopHint`
- added an Atomic(T) generic wrapper type which replaces atomic.Bool and atomic.Int
- in Atomic(T), selectively expose member functions depending on T and include bitwise atomic methods when T is an Integer
- added fence() and compilerFence() to std.atomic
In this file is copy+pasted WindowsSupport.h from LLVM 12.0.1-rc1.
This is so that we can patch it. The upstream sources are incorrectly
including "llvm/Config/config.h" which is a private header and thus not
available in the include files distributed with LLVM.
The patch here changes it to include "llvm/Config/config.h" instead.
Patch submitted upstream: https://reviews.llvm.org/D103370
The same entrypoint supports the following commands:
* ar
* ranlib
* dlltool
* lib
For now, our strategy is to bundle the (renamed) `main()` function of
llvm-ar, same as our strategy for `zig clang`. However, as Zig matures,
a goal will be to replace the dependency on LLVM with our own
implementation of this tool, so that it is available in builds of zig
that do not have LLVM extensions enabled.
This commit also categorizes the subcommands into categories in the
--help menu.
Before this, if a compile error occurred, it would cause the previous
value for e.g. the function scope to not get reset. If the AstGen
process continued, it would result in a violation of the data
guarantees that it relies on.
This commit takes advantage of defer to ensure the previous value is
always reset, even in the case of an error.
Closes#8920
Bitcast the pointer and operands to integer types having the same size,
working around LLVM inability to lower a LL/SC operation when the
operands have floating-point types (and are reasonably sized).
Closes#4457
