This allows us to differentiate between regular locals and variables that create multiple locals
on the stack such as optionals and structs.
Now `struct_a = struct_b;` works and only updates a reference, rather than update all local's values.
Also created more test cases to test against this.
- When returning within a block, we must use an explicit return opcode. For now always emit the opcode when calling return, rather than using implicit return statements.
- Also added a more comprehensive test case to test for enum values using conditions
- This adds support for enum values using field indexes
- EmitConstant's signature was changed so it's easier to recursively call it using a different type (enum -> int type).
- Implemented initial support for bitcast which for now just returns the `WValue` of the operand.
We do need to link the system libc if linking system libraries as
they may potentially be compiled against e.g. a newer glibc version
than zig can provide. However if not linking system libraries, using
the zig provided libc is more reliable as it does not depend on any
quirks of the host system or being able to invoke the system cc to
find include dirs.
Now that `@import` of a non-existent file name is a compile error, the
Zig installation needs to include files that end with test.zig. However
we still want to avoid bloat in the installation size, so we blank them
out instead of omitting them entirely.
Now AstGen of the full standard library can complete successfully on a
Zig installation rather than erroring out with file not found.
When scanDecls happens, we create stub Decl objects that
have not been semantically analyzed. When they get referenced,
they get semantically analyzed.
Before this commit, when they got unreferenced, they were completely
deleted, including deleted from the containing Namespace.
However, if the update did not cause the containing Namespace to get
deleted, for example, if `std.builtin.ExportOptions` is no longer
referenced, but `std.builtin` is still referenced, and then `ExportOptions`
gets referenced again, the Namespace would be incorrectly missing the
Decl, so we get an incorrect "no such member" error.
The solution is to, when dealing with a no longer referenced Decl
objects during an update, clear them to the state they would be in
on a fresh scanDecl, rather than completely deleting them.
Current assumed order is:
* cwd
* `self.base.options.lib_dirs`
* finally, if `self.base.options.syslibroot` is defined,
`self.base.options.lib_dirs` prefixed with syslibroot
The support is minimalistic in the sense that we only support actual
dylib files and not stubs/tbds yet, and we also don't support re-exports
just yet.
This fixes a segfault in translate-c that would previously occur when
initializing structs with unnamed bitfields, due to a failed assertion in
`transInitListExprRecord`. Unnamed bitfields do not have initializers,
so `transInitListExprRecord` erroneously assumes that `init_count` equals
the number of fields in the record.
Since attempting to initialize an opaque type is a syntax error in Zig,
we can just demote any attempts to initialize them.
A previous commit from this branch incorrectly changed the usage of
`comptime` keyword, and broke the std lib tests. This commit adds
`comptime` to a few function calls, correcting the behavior.
Conflicts:
* src/codegen/spirv.zig
* src/link/SpirV.zig
We're going to want to improve the stage2 test harness to print
the source file name when a compile error occurs otherwise std lib
contributors are going to see some confusing CI failures when they cause
stage2 AstGen compile errors.
In order for this test to pass, the host linking/start code needs to
support explicitly setting the stack size. Zig defaults to 16 MiB stack
size, which is enough to pass the test in Debug builds, however, most
operating systems do not honor the stack size we request for and give a
smaller amount.
Eventually the goal is to pass this test on all hosts.
Previously, ZIR was per-function so we could simply allocate a slice for
all ZIR instructions. However now ZIR is whole-file, so we need a sparse
mapping of ZIR to AIR instructions in order to not waste memory.
Previously, stage2 used a global decl_table for all Decl objects, keyed
by a 16-byte name hash that was hopefully unique. Now, there is a tree
of Namespace objects that own their named Decl objects.
Let mmap allocate a block of memory that's wide enough to use with
MADV_WIPEONFORK, madvise granularity is the current system page size
(using a static buffer of mem.page_size bytes would be wrong, that's the
minimum page size).
As a result, we don't zero some random chunk of memory every time we
fork the process.
Fixes#7609
There was missing incremental compilation logic in the MachO linker
code, causing test failures. With this logic ported over from the
corresponding ELF logic, tests pass again.
Previously the frontend incorrectly called freeDecl for structs, which
never got allocateDecl called for them. There was simply a missing check
for hasCodeGenBits().
