Rather than lowering float negation as `0.0 - x`.
* Add AIR instruction for float negation.
* Add compiler-rt functions for f128, f80 negation
closes#11853
Change BigTomb implementation to call to Liveness' implementation
rather than implementing feed() in itself.
This is modelled after the AArch64 backend.
This adds clarification to the getGlobalSymbol doc comments,
as well as renames the `addExternFn` function for MachO to `getGlobalSymbol`.
This function will now be called from 'src/link.zig' as well.
Finally, this also enables compiling zig's libc using LLVM even though
the `fno-LLVM` flag is given.
`genFunctype` now accepts calling convention, param types, and return type
as part of its function signature rather than `fnData`. This means
we no longer have to create a dummy for our intrinsic call abstraction.
This also adds support for f16 division and builtins such as `@ceil` & more.
Implements `@mulAdd` for floats with bitsize 16, where it generates
a call into compiler-rt's `fmaf` function. Note that arguments
for fmaf are different in order than `@mulAdd`.
This implements binary operations and comparisons
for floats with bitsize 16. It does this by calling into
compiler-rt to first extend the float to 32 bits, perform the operation,
and then finally truncate back to 16 bits. When loading and storing the f16,
we do this as an unsigned 16bit integer.
Implements the creation of an undefined symbol for a compiler-rt intrinsic.
Also implements the building of the function call to said compiler-rt intrinsic.
Rather than storing all the shifts in temporaries, we perform the correct
shifting without temporaries. This makes the runtime code more performant
and also the backend code is simplified as we have a singular abstraction.
This does however not support floats of bitsizes
different than 32 or 64. f16, f80, f126 will require
support for compiler-rt and are out-of-scope for this commit.
Signed integers are currently not supported either.
And use it to debug a LazySrcLoc in stage2 that is set to a bogus value.
The actual fix in this commit is:
```diff
- try sema.emitBackwardBranch(&child_block, call_src);
+ try sema.emitBackwardBranch(block, call_src);
```
