This patch introduces denormal result support to soft-float division
implementation unified by D85031.
Reviewed By: sepavloff
Differential Revision: https://reviews.llvm.org/D85032
* Make the three tests look more uniformly
* Explicitly specify types of integer and floating point literals
* Add more test cases (mostly inspired by divtf3_test.c)
- tests are added for obviously special cases such as +/-Inf, +/-0.0 and some
more implementation-specific cases such as divisor being almost 1.0
* Make NaN in the second test case of `divtf3` to be `sNaN` instead of
testing for `qNaN` again
Reviewed By: sepavloff
Differential Revision: https://reviews.llvm.org/D84932
Summary:
If a platform removes some builtin implementations (e.g. via the
Darwin-excludes mechanism) then this can lead to test failures because
the test expects an implementation to be available.
To solve this lit features are added for each configuration based
on which sources are included in the builtin library. The features
are of the form `librt_has_<name>` where `<name>` is the name of the
source file with the file extension removed. This handles C and
assembly sources.
With the lit features in place it is possible to make certain tests
require them.
Example:
```
REQUIRES: librt_has_comparedf2
```
All top-level tests in `test/builtins/Unit` (i.e. not under
`arm`, `ppc`, and `riscv`) have been annotated with the appropriate
`REQUIRES: librt_has_*` statement.
rdar://problem/55520987
Reviewers: beanz, steven_wu, arphaman, dexonsmith, phosek, thakis
Subscribers: mgorny, #sanitizers, llvm-commits
Tags: #llvm, #sanitizers
Differential Revision: https://reviews.llvm.org/D68064
llvm-svn: 375150
We were treating certain edge cases that are actually normal as denormal
results, and flushing them to zero; we shouldn't do that. Not sure this
is the cleanest way to implement this edge case, but I wanted to avoid
adding any code on the common path.
Differential Revision: https://reviews.llvm.org/D59070
llvm-svn: 356529
Anatoly Trosinenko