Provide default parsers for obvious config options such as
`CrossTarget` or `Backend` (or any enum for that matter).
Unroll iterator loops into multiple cases - we need to create
a Cartesian product for all possibilities specified in the
test manifest.
* remove need for manual string concatenation for building binaries in test blocks
* include small program snippet to show how to get binary path with subslicing
Before this change, struct {f80, f80} targeting i386-windows-msvc lowers
to
```llvm
%"std.testing.struct:78:61.6" = type { x86_fp80, [6 x i8], x86_fp80, [6 x i8] }
```
which has an incorrect ABI size of 40. After this change, the struct
lowers to
```llvm
%"std.testing.struct:78:61.6" = type { x86_fp80, [4 x i8], x86_fp80, [4 x i8] }
```
which has the correct ABI size of 32, and properly aligns the second
field to 16 bytes.
The other place that calculates field padding (lowering of constant
values in codegen.cpp) already correctly calls LLVMABISizeOfType
rather than LLVMStoreSizeOfType.
This fixes the compiler-rt tests for i386-windows in this branch.
These are only as accurate as f64 even for f128 comptime functions. This
is OK for now; improvements will come with the launch of self-hosted
(#89) and enhancements to compiler-rt implementations.
This is to account for the small differences in math functions of
different libcs. For example, if the compiler links against glibc,
but the target is musl libc, then these values might be
slightly different.
Arguably, this is a bug in the compiler because comptime should
emulate the target, including rounding errors in libc math
functions. However that behavior is not what this particular test
is intended to cover.
The reason for having `@tan` is that we already have `@sin` and `@cos`
because some targets have machine code instructions for them, but in the
case that the implementation needs to go into compiler-rt, sin, cos, and
tan all share a common dependency which includes a table of data. To
avoid duplicating this table of data, we promote tan to become a builtin
alongside sin and cos.
ZIR: The tag enum is at capacity so this commit moves
`field_call_bind_named` to be `extended`. I measured this as one of
the least used tags in the zig codebase.
Fix libc math suffix for `f32` being wrong in both stage1 and stage2.
stage1: add missing libc prefix for float functions.
* std.math.snan: fix compilation error. Also make it and nan inline.
* LLVM: use a proper enum type for float op instead of enum literal.
Also various cleanups.
* LLVM: use LLVMBuildVectorSplat for vector splat AIR instruction.
- also the bindings had parameter order wrong
* LLVM: additionally handle f16 lowering. For now all targets report OK
but I think we will need to add some exceptions to this list.
Updates stage2 to manually lower softfloat operations for all unary
floating point operations and arithmetic.
Softfloat support still needs to be added for conversion operators
(float<->float and int<->float)
* unify the logic for exporting math functions from compiler-rt,
with the appropriate suffixes and prefixes.
- add all missing f128 and f80 exports. Functions with missing
implementations call other functions and have TODO comments.
- also add f16 functions
* move math functions from freestanding libc to compiler-rt (#7265)
* enable all the f128 and f80 code in the stage2 compiler and behavior
tests (#11161).
* update std lib to use builtins rather than `std.math`.
This implements the C-ABI convention as specified by:
https://github.com/WebAssembly/tool-conventions/blob/main/BasicCABI.md
While not an official specification, it's the ABI that is output by clang/LLVM.
As we use LLVM to compile compiler-rt, and want to integrate with C-libraries,
we follow the same convention when the calling convention results in 'C'.
This function is codegen'd incorrectly in stage2, since it fails to
generate the correct soft-float operations. This will be fixed once
issue #11161 is implemented
