The checks detecting such no-op branches (essentially instructions
that branch to the instruction immediately following the branch) were
tightened to catch more of these occurrences.
* Fix compile error for `zirErrorUnionType`.
* Convert zirMergeErrorSets logic to call `Type.errorSetMerge`.
It does not need to create a Decl as the TODO comment hinted.
* Extract out a function called `resolveInferredErrorSetTy`.
* Rework `resolvePeerTypes` with respect to error unions and
error sets. This is a less complex implementation that passes all the
same tests and uses many fewer lines of code by taking advantage of
the function `coerceInMemoryAllowedErrorSets`.
- Always merge error sets in the order that makes sense, even when
that means `@typeInfo` incompatibility with stage1.
* `Type.errorSetMerge` no longer overallocates.
* Don't skip passing tests.
We were using the array type, not the element type. Also, we should do
the sentinel comparison after we verify that the element types of both
are compatible.
* link: add a virtual function `lowerUnnamedConsts`, similar to
`updateFunc` or `updateDecl` which needs to be implemented by the
linker backend in order to be used with the `CodeGen` code
* elf: implement `lowerUnnamedConsts` specialization where we
lower unnamed constants to `.rodata` section. We keep track of the
atoms encompassing the lowered unnamed consts in a global table
indexed by parent `Decl`. When the `Decl` is updated or destroyed,
we clear the unnamed consts referenced within the `Decl`.
* macho: implement `lowerUnnamedConsts` specialization where we
lower unnamed constants to `__TEXT,__const` section. We keep track of the
atoms encompassing the lowered unnamed consts in a global table
indexed by parent `Decl`. When the `Decl` is updated or destroyed,
we clear the unnamed consts referenced within the `Decl`.
* x64: change `MCValue.linker_sym_index` into two `MCValue`s: `.got_load` and
`.direct_load`. The former signifies to the emitter that it should
emit a GOT load relocation, while the latter that it should emit
a direct load (`SIGNED`) relocation.
* x64: lower `struct` instantiations
Instead use the standarized option for communicating the
zig compiler backend at comptime, which is `zig_backend`. This was
introduced in commit 1c24ef0d0b09a12a1fe98056f2fc04de78a82df3.
- This implements the float_to_int AIR instruction.
- Lowering a decl_ref to a slice was previously assumed to contain a pointer
to a slice, rather than an array. This is now fixed, making `@src()` work as well.
- Some preliminary work on 128bit integers have been done to find out what needs to be done
to implement 128bit arithmetic.
This allows stage2 to build more of compiler-rt.
I also changed `-%` to `-` for comptime ints in the div and mul
implementations of compiler-rt. This is clearer code and also happens to
work around a bug in stage2.
