When handling the `negate` ZIR instruction, Zig now checks for a
comptime operand and handles it as a special case rather than lowering
it as `0 - x` so that the expression `-x` where `x` is a floating point
value known at compile-time, will get the negative zero bitwise
representation.
* back out the changes to RunStep
* move the disabled test to the .cpp code and avoid a confusing
name-collision with the _LIBCPP macro prefix
* fix merge conflict with the edits to the same test that ensure global
initializers are called.
Now this branch is only concerned with single-threaded targets and
passing the correct macro defines to libc++.
```
$ valgrind ./zig test ../test/behavior.zig -target powerpc-linux-musl -lc -I../test
==2828778== Invalid read of size 1
==2828778== at 0x6EA0265: LLVMSetVisibility (in /home/andy/Downloads/zig/build/zig)
==2828778== by 0x1BCE60B: do_code_gen(CodeGen*) (codegen.cpp:9031)
==2828778== by 0x1BD51E2: codegen_build_object(CodeGen*) (codegen.cpp:10610)
==2828778== by 0x1BA5C17: zig_stage1_build_object (stage1.cpp:132)
==2828778== by 0xE61E24: Module.build_object (stage1.zig:149)
==2828778== by 0xC3D4CE: Compilation.updateStage1Module (Compilation.zig:5025)
==2828778== by 0xC3117E: Compilation.performAllTheWork (Compilation.zig:2691)
==2828778== by 0xC2A3ED: Compilation.update (Compilation.zig:2098)
==2828778== by 0xBB9D1F: main.updateModule (main.zig:3104)
==2828778== by 0xB16B75: main.buildOutputType (main.zig:2793)
==2828778== by 0xAD0526: main.mainArgs (main.zig:225)
==2828778== by 0xACFCB9: main (stage1.zig:48)
```
Since the plan is to ship stage3 for Zig 0.10.0, the stage1
implementation of this hardly matters.
* Rename std.builtin.GlobalVisibility to std.builtin.SymbolVisibility
* Add missing compile error. From the LLVM language reference: "A
symbol with internal or private linkage must have default
visibility."
This commit adds the ability to emit the following debug sections:
.debug_info
.debug_abbrev
.debug_line
.debug_str
Line information and files are now being loaded correctly by browser debuggers.
This implements parts to commit a decl's debug information into
a linear memory buffer. The goal is to write this buffer at once
after we finished linking.
Maps lines and columns between wasm bytecode and Zig source code.
While this supports prologue and epilogue information, we need to add
support for performing relocations as the offsets are relative to the code section,
which means we must relocate it according to the atom offset's offset while keeping function count
in mind as well (due to leb128 encoding).
Implements very basic debug information for locals.
For now it only implements debug info when the variable is stored within a
Wasm local. The goal is to support those that live in the data section (virtual stack).
When exporting math functions for Windows, we provide weak exports of
'l' variants rather than weak aliases. We still use aliases on other
operating systems so that the 'l' variants have one less jump
instruction in this case.
As we now store negative signed integers as two's complement,
we must also ensure that when truncating a float, its value is wrapped
around the integer's size.
This also splits `@mulWithOverflow` into its own function to make
the code more maintainable and reduce branching.
stage2: change logic for detecting whether the main package is inside
the std package. Previously it relied on realpath() which is not portable.
This uses resolve() which is how imports already work.
* stage2: fix cleanup bug when creating Module
* flatten lib/std/special/* to lib/*
- this was motivated by making main_pkg_is_inside_std false for
compiler_rt & friends.
* rename "mini libc" to "universal libc"
This improves the ABI alignment resolution code.
This commit fully enables the MachO linker code in stage3. Note,
however, that there are still miscompilations in stage3.
