The comment added by this commit is copied here:
For macOS stack traces, we want to avoid having to parse the compilation unit debug
info. As long as each debug info file has a path independent of the compilation unit
directory (DW_AT_comp_dir), then we never have to look at the compilation unit debug
info. If we provide an absolute path to LLVM here for the compilation unit debug info,
LLVM will emit DWARF info that depends on DW_AT_comp_dir. To avoid this, we pass "."
for the compilation unit directory. This forces each debug file to have a directory
rather than be relative to DW_AT_comp_dir. According to DWARF 5, debug files will
no longer reference DW_AT_comp_dir, for the purpose of being able to support the
common practice of stripping all but the line number sections from an executable.
closes#2700
* CLI: `-target [name]` instead of `--target-*` args.
This matches clang's API.
* `builtin.Environ` renamed to `builtin.Abi`
- likewise `builtin.environ` renamed to `builtin.abi`
* stop hiding the concept of sub-arch. closes#1526
* `zig targets` only shows available targets. closes#438
* include all targets in readme, even those that don't
print with `zig targets` but note they are Tier 4
* refactor target.cpp and make the naming conventions
more consistent
* introduce the concept of a "default C ABI" for a given
OS/Arch combo. As a rule of thumb, if the system compiler
is clang or gcc then the default C ABI is the gnu ABI.
Prevents LLVM from generating debug info for
struct member functions with a pointer as the
first parameter as though the first parameter
were the implicit "this" pointer from C++.
it has a patch that adds an OS type, breaking the public API
this commit avoids depending on the last os type enum item,
but retains the safety assertion checks.
closes#1788
On Arch Linux the current default compiler is gcc 8.2.1 and this change
is needed to ignore the following errors:
In file included from /home/wink/local/include/llvm/ADT/STLExtras.h:21,
from /home/wink/local/include/llvm/ADT/StringRef.h:13,
from /home/wink/local/include/llvm/ADT/StringMap.h:17,
from /home/wink/local/include/llvm/Support/Host.h:17,
from /home/wink/local/include/llvm/ADT/Hashing.h:49,
from /home/wink/local/include/llvm/ADT/ArrayRef.h:13,
from /home/wink/local/include/llvm/ADT/APFloat.h:21,
from /home/wink/local/include/clang/AST/APValue.h:18,
from /home/wink/local/include/clang/AST/Decl.h:17,
from /home/wink/local/include/clang/AST/ASTTypeTraits.h:20,
from /home/wink/local/include/clang/AST/ASTContext.h:18,
from /home/wink/local/include/clang/Frontend/ASTUnit.h:18,
from /home/wink/prgs/ziglang/zig/src/translate_c.cpp:18:
/home/wink/local/include/llvm/ADT/SmallVector.h: In instantiation of ‘void llvm::SmallVectorTemplateBase<T, true>::push_back(const T&) [with T = std::pair<void*, long unsigned int>]’:
/home/wink/local/include/llvm/Support/Allocator.h:249:33: required from ‘void* llvm::BumpPtrAllocatorImpl<AllocatorT, SlabSize, SizeThreshold>::Allocate(size_t, size_t) [with AllocatorT = llvm::MallocAllocator; long unsigned int SlabSize = 4096; long unsigned int SizeThreshold = 4096; size_t = long unsigned int]’
/home/wink/local/include/clang/AST/ASTContext.h:659:42: required from here
/home/wink/local/include/llvm/ADT/SmallVector.h:313:11: error: ‘void* memcpy(void*, const void*, size_t)’ writing to an object of type ‘struct std::pair<void*, long unsigned int>’ with no trivial copy-assignment; use copy-assignment or copy-initialization instead [-Werror=class-memaccess]
memcpy(this->end(), &Elt, sizeof(T));
~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/8.2.1/utility:70,
from /home/wink/local/include/llvm/Support/type_traits.h:19,
from /home/wink/local/include/llvm/Support/Casting.h:19,
from /home/wink/local/include/clang/Basic/LLVM.h:22,
from /home/wink/local/include/clang/AST/APValue.h:17,
from /home/wink/local/include/clang/AST/Decl.h:17,
from /home/wink/local/include/clang/AST/ASTTypeTraits.h:20,
from /home/wink/local/include/clang/AST/ASTContext.h:18,
from /home/wink/local/include/clang/Frontend/ASTUnit.h:18,
from /home/wink/prgs/ziglang/zig/src/translate_c.cpp:18:
/usr/include/c++/8.2.1/bits/stl_pair.h:198:12: note: ‘struct std::pair<void*, long unsigned int>’ declared here
struct pair
^~~~
Add wasm32 support to the build-obj, build-exe and build-lib commands
of the stage 1 compiler. Wasm64 should work transparently once it's
supported in upstream LLVM.
To export a function:
// lib.zig - for exposition, not necessary for this example
pub use @import("add.zig");
// add.zig
export fn add(a: i32, b: i32) i32 {
return a + b;
}
To import a function:
// cube.zig
extern fn square(x: i32) i32;
export fn cube(x: i32) i32 {
return x * square(x);
}
* remove @cmpxchg, add @cmpxchgWeak and @cmpxchgStrong
- See explanations in the langref.
* add operand type as first parameter
* return type is ?T where T is the operand type
closes#461
