This way, tracking segment-to-section mapping becomes a lot easier
since it's effectively just start index plus number of sections
defined within the segment. If a section becomes empty however
care needs to be taken to remove the header upon committing to the
final binary.
Fix incorrect writing of symtab and strtab in dSYM bundle in incremental
context.
Fix incorrectly navigating unnamed consts (freeing) in incremental context.
This is currently hard-coded to require all consts to land in `__TEXT,__const`,
which is wrong and needs a rewrite.
Instead of generating sections upfront, allow generation by scanning
the object files for input -> output sections mapping. Next, always
strive to keep output sections in the final container sorted as they
appear in the final binary. This makes the linker less messy wrt
handling of output sections sort order for dyld/macOS not to complain.
There's still more work to be done for incremental context though
to make this work but looks promising already.
Removed the copy of param_names inside of Fn and changed to
implementation of getParamName to fetch to parameter name from the ZIR.
The signature of getParamName was also changed to take an additional
*Module argument.
This change provides a basic implementation of #2349 for stage2. There's
still quite a lot of work before this logic is as complete as what's in
Clang (https://github.com/llvm/llvm-project/blob/b3645353041818f61e2580635409ddb81ff5a272/clang/lib/CodeGen/CGStmt.cpp#L2304-L2795),
particularly considering the diversity of constraints across targets.
It's probably not worth doing the complete work until there's a clearer
picture for constraints in Zig's future dedicated ASM syntax, but at
least this gives us a small improvement for now.
As a bonus, this also fixes a bug with how we were handling `_`
identifiers.
Fixes: 2a990d696 ("stage1: rework tokenizer to match stage2")
Fixes: b6354ddd5 ("move AST rendering code to separate file")
Signed-off-by: Wei Fu <fuweid89@gmail.com>
Shared libraries can be provided on the command line as if they were
objects, as a path to the ".so" file. The "each-lib-rpath" functionality
was ignoring these shared libraries accidentally, causing missing rpaths
in the output executable.
* No longer emit div_exact AIR instruction that can produce a
remainder, invoking undefined behavior.
* div_trunc, div_exact, div_floor are extracted from analyzeArithmetic
and directly handled similarly to div_trunc, integrating them with
integer overflow safety checking.
* Also they no longer emit divide-by-zero safety checking when RHS
is comptime known to be non-zero.
Veikka Tuominen