Commit Graph

43 Commits

Author SHA1 Message Date
Paolo Teti 45f924ece5 Add generic conversion from a narrower to a wider FP type
Add `extend` module to implement conversion from a narrower to a wider
floating-point type.

This implementation is only intended to support *widening* operations.
Module to convert a *narrower* floating-point will be added in the future.
2018-02-08 18:20:45 +01:00
Paolo Teti 13db8bf436 Add support for sub*f3vfp and add*f3vfp
As done before for mul and div let's use extern "C" to generate `"aapcs"`
or `"aapcs-vfp"` depending on target configuration.
2018-02-04 18:34:31 +01:00
Paolo Teti 8f018562ca Add support for mul[s/d]f3vfp and div[s/d]f3vfp
Here using `"C"` the compiler will use `"aapcs"` or `"aapcs-vfp"`
depending on target configuration.

Of course this translates in a call to `__aeabi_fdiv` / `__aeabi_fmul`
on non-HF targets.

On `eabi` targets with +vfpv2/vfpv3 LLVM generate:

   vmov	s0, r1
   vmov	s2, r0
   vdiv.f32	s0, s2, s0
   vmov	r0, s0
   bx	lr

On `eabihf` targets with +vfpv3-d16/d32/f32 +fp-only-sp LLVM generate:

  vdiv.f32	s0, s0, s1
  bx	lr

That's exactly what We need for [div/mul][s/d]f3vfp.S
2018-01-29 20:49:55 +01:00
whitequark 4cf6571362 README: update to explain how to run quickcheck-style tests. 2017-12-29 06:36:09 +00:00
whitequark f5d86476a8 Implement comparesf2/comparedf2 intrinsics. 2017-12-28 03:45:32 +00:00
whitequark 82ee1dd760 comparesf2/comparedf2 are called on soft-float targets.
E.g. take a look at the assembly output for:

  pub fn comparesf2(a: f32, b: f32) -> bool { a > b }
  pub fn comparedf2(a: f64, b: f64) -> bool { a > b }

which will include calls to __gtsf2 and __gtdf2.
2017-12-28 02:57:42 +00:00
Oliver Geller 8bb30026c7 Implement divsf3 and divdf3 2017-11-13 20:22:27 -05:00
Oliver Geller 897048543f Implement mulsf3 and muldf3 2017-11-08 17:36:34 -05:00
Matt Ickstadt b3679bcfba Implement x86 chkstk in "rust" 2017-09-15 18:04:59 -05:00
Geoff Yoerger fe6197e2f2 Fix README relative link. 2017-08-21 16:17:04 -05:00
Alex Crichton 070990f10a Compile ffsdi2 with `rustbuild` feature
This is not used by LLVM/Rust, but is apparently used by gcc/C which jemalloc
can require at least.
2017-07-03 15:00:51 -07:00
est31 d247c55d4d Mark the functions just implemented in README.md 2017-05-06 15:47:38 +02:00
est31 1ea9ea06d1 Mark some float related intrinsics as implemented in README.md
They have been implemented since
2017-05-06 00:42:59 +02:00
est31 9013dbef02 u128 sdiv intrinsics 2017-02-02 22:13:28 +01:00
est31 2f3c534cfe u128 udiv intrinsics 2017-02-02 22:11:14 +01:00
est31 1e27c3f937 i128 shift intrinsics 2017-02-02 22:02:51 +01:00
est31 3055aa21b6 i128 mul intrinsics 2017-02-02 21:36:56 +01:00
Jorge Aparicio 39b7fa2267 mention that 'extern crate compiler_builtins' must be used
in some crate that's part of the dependency graph of the crate one's
building.
2016-10-19 11:25:16 -05:00
Phaiax cbd35de94c Fix url in readme 2016-10-15 19:21:23 +02:00
Jorge Aparicio 20c107784b update the title as well 2016-10-14 19:59:00 -05:00
Alex Crichton 09d61e8f97 More small updates to the README 2016-10-14 15:50:50 -07:00
Jorge Aparicio f6b5c56113 README: remove the Contribution sub-section
which still referred to the Apache-2 license and is now deprecated by
the updated License section

cc @brson
2016-10-13 20:51:50 -05:00
Brian Anderson c064549c4b Correct the license to that of upstream compiler-rt
As this is a derivative work we must maintain the same license terms.
2016-10-12 17:50:39 +00:00
Matt Ickstadt 6622c49be6 Implement powi_f2 2016-10-03 11:20:42 -05:00
Alex Crichton 8e161a791a Expand and refactor teting infrastructure
This commit moves over most of the testing infrastructure to in-tree docker
images that are all dispatched to from Travis (no other test configuration).
This allows versioning modifications to the test infrastructure as well as the
code itself. Additionally separate docker images allows for easy modification of
one without worrying about tampering of others as well as easy addition of new
targets by simply adding a new `Dockerfile`.

Additionally this commit bundles the master version of the `compiler-rt` source
repository from `llvm-mirror/compiler-rt` to test against. The compiler-rt
library itself is compiled as a `cdylib` which is then dynamically located at
runtime and we look for symbols in. There's a few hoops here, but they currently
get the job done.

All tests now execute against both gcc_s and compiler-rt, and this
testing strategy is now all hidden behind a macro as well (refactoring
all existing tests along the way).
2016-09-28 22:09:55 -07:00
Jorge Aparicio 9d74cf08b8 homu test 2016-09-10 19:12:50 -05:00
Jorge Aparicio 8359013890 test for homu 2016-09-10 18:37:35 -05:00
Jorge Aparicio a687b97858 README: when and how to use this crate 2016-08-23 20:35:30 -05:00
Jorge Aparicio 09785557c0 README: add AppVeyor badge 2016-08-23 20:23:28 -05:00
Jorge Aparicio 2c520f10b9 README: fix link 2016-08-23 20:17:39 -05:00
Matt Ickstadt 3986d1e3b6 Add a `Porting Reminders` section to the README 2016-08-21 15:49:32 -05:00
Matt Ickstadt ef16de3d37 Implement soft float add builtins 2016-08-20 16:06:02 -05:00
Jorge Aparicio 8603e64554 Merge pull request #44 from Amanieu/sdiv
Add signed division functions
2016-08-19 09:16:53 -05:00
Amanieu d'Antras f919660be5 Add signed division functions 2016-08-19 12:13:02 +01:00
Matt Ickstadt 6b7a00325c Check off x86_64 builtins in README
[ci ignore]
2016-08-17 14:35:48 -05:00
Amanieu d'Antras acceaa95f1 Various changes 2016-08-13 09:56:40 +01:00
Jorge Aparicio d546f18756 README: cross out a few intrinsics for the TODO list 2016-08-11 02:12:01 -05:00
Amanieu d'Antras 065aaa9144 Remove the x86-specific floating-point builtins 2016-08-08 08:36:59 +01:00
Amanieu d'Antras a147763c19 Remove builtins that are not called by LLVM 2016-08-08 08:25:11 +01:00
Amanieu d'Antras 326ad00e3f Clean up function list in README 2016-08-08 06:54:00 +01:00
Jorge Aparicio e5ab308115 README: add Contributing and Progress sections 2016-08-07 21:05:42 -05:00
Jorge Aparicio e82b7bec40 README: link back to rust-lang/rust issue 2016-08-07 16:01:28 -05:00
Jorge Aparicio 1faf15fc64 initial commit 2016-08-07 15:58:21 -05:00