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447 Commits

Author SHA1 Message Date
Tobias Decking
59766673e7 more fixing 2023-03-06 19:28:49 +01:00
Tobias Decking
73fa0deaa6 formatting 2023-03-06 19:24:02 +01:00
Tobias Decking
215f63ad19 Final version. 2023-03-06 19:20:30 +01:00
Andrew Kane
59fb34e63a Added lgamma_r and lgammaf_r 2023-03-05 12:17:21 -08:00
Tobias Decking
04fe482160 Formatting 2023-02-22 22:19:10 +01:00
Tobias Decking
c7404df069 Provide a non-sse version for x86_64. 2023-02-22 22:16:29 +01:00
Scott Mabin
67ebc4ae14 Extend the intrinsics exported for Xtensa no_std 2023-02-22 20:56:31 +00:00
Tobias Decking
97402fc580 Change implementation to SSE 2023-02-22 21:54:33 +01:00
Tobias Decking
e9e34801a6 Remove superfluous comment. 2023-02-22 00:10:46 +01:00
Tobias Decking
b53c1ae17a Improve assembly quality + AT&T syntax. 2023-02-22 00:07:41 +01:00
Tobias Decking
44d34e87fa Update path for argument. 2023-02-21 23:36:47 +01:00
Tobias Decking
990596fa28 Correct path. 2023-02-21 23:32:39 +01:00
Tobias Decking
a11bd1cfdb Specialize strlen for x86_64. 2023-02-21 23:13:02 +01:00
Josh Stone
8d4e906206 Drop the llvm14-builtins-abi hack 2023-02-01 14:52:18 -08:00
Patryk Wychowaniec
d20eea4d47 fix: Add #[avr_skip] for bit shifts 
This commit follows the same logic as:

- https://github.com/rust-lang/compiler-builtins/pull/462
- https://github.com/rust-lang/compiler-builtins/pull/466

I've tested the changes by preparing a simple program:

```rust
fn calc() -> ... {
    let x = hint::black_box(4u...); // 4u8, 4u16, 4u32, 4u64, 4u128 + signed
    let y = hint::black_box(1u32);

    // x >> y
    // x << y
}

fn main() -> ! {
    let dp = arduino_hal::Peripherals::take().unwrap();
    let pins = arduino_hal::pins!(dp);
    let mut serial = arduino_hal::default_serial!(dp, pins, 57600);

    for b in calc().to_le_bytes() {
        _ = ufmt::uwrite!(&mut serial, "{} ", b);
    }

    _ = ufmt::uwriteln!(&mut serial, "");

    loop {
        //
    }
}
```

... switching types & operators in `calc()`, and observing the results;
what I ended up with was:

```
 u32 << u32 - ok
 u64 << u32 - ok
u128 << u32 - error (undefined reference to `__ashlti3')
 i32 >> u32 - ok
 i64 >> u32 - ok
i128 >> u32 - error (undefined reference to `__ashrti3')
 u32 >> u32 - ok
 u64 >> u32 - ok
u128 >> u32 - error (undefined reference to `__lshrti3')

(where "ok" = compiles and returns correct results)
```

As with multiplication and division, so do in here 128-bit operations
not work, because avr-gcc's standard library doesn't provide them (at
the same time, requiring that specific calling convention, making it
pretty difficult for compiler-builtins to jump in).

I think 128-bit operations non-working on an 8-bit controller is an
acceptable trade-off - 😇 - and so the entire fix in here is
just about skipping those functions.
 2022-12-25 11:46:30 +01:00
Martin Kröning
620f50589e Expose minimal floating point symbols for x86_64-unknown-none 2022-12-07 16:08:01 +01:00
Jérome Eertmans
80828bfb0b fix(docs): typo in docstrings 
Hello, I think you misspelled `width` to `with`.
 2022-11-28 10:53:42 +01:00
Jules Bertholet
af5664be84 Update libm, add rint and rintf 2022-11-08 21:04:02 -05:00
Felix S. Klock II
2faf57c08d might as well add the link to the LLVM assembly code as well. 2022-10-25 12:32:41 -04:00
Felix S. Klock II
8266a1343b Document origins of the multiplication method being used here. 2022-10-25 11:25:14 -04:00
Ralf Jung
6267545315 invoke the unreachable intrinsic, not the stable wrapper 2022-10-10 19:34:48 +02:00
Amanieu d'Antras
2e0590c997 Fix clippy lints 2022-10-10 17:40:16 +01:00
Lokathor
f6cd5cf806 Update macros.rs 2022-09-27 13:22:45 -06:00
D1plo1d
1d5b952100 math: Enabled floating point intrinsics for RISCV32 microcontrollers 2022-09-17 11:47:21 -04:00
David Hoppenbrouwers
a695cf95cf Remove c32() from x86_64 memcmp 
Fixes https://github.com/rust-lang/compiler-builtins/issues/487
 2022-08-10 11:29:38 +02:00
Nicholas Bishop
abb6893a85 Enable unadjusted_on_win64 for UEFI in some cases 
The conversion functions from i128/u128 to f32/f64 have the
`unadjusted_on_win64` attribute, but it is disabled starting with
LLVM14. This seems to be the correct thing to do for Win64, but for some
reason x86_64-unknown-uefi is different, despite generally using the
same ABI as Win64.
 2022-08-03 19:16:03 -04:00
Amanieu d'Antras
b71753da80 Merge pull request #484 from Alexhuszagh/armv5te 2022-07-30 02:42:08 +02:00
Amanieu d'Antras
a81a868a59 Merge pull request #482 from ankane/gamma 2022-07-30 02:41:21 +02:00
Alex Huszagh
599dcc2c46 Add compiler-rt fallbacks for sync builtins on armv5te-musl. 2022-07-29 16:58:05 -05:00
Andrew Kane
89df6f6bc0 Added tgamma and tgammaf 2022-07-28 16:21:37 -07:00
David Hoppenbrouwers
66f22e0931 Remove branches around rep movsb/stosb 
While it is measurably faster for older CPUs, removing them keeps the code
smaller and is likely more beneficial for newer CPUs.
 2022-07-28 18:45:28 +02:00
David Hoppenbrouwers
04c223f0df Skip rep movsb in copy_backward if possible 
There is currently no measureable performance difference in benchmarks
but it likely will make a difference in real workloads.
 2022-07-28 18:32:57 +02:00
David Hoppenbrouwers
30e0c1f4c2 Use att_syntax for now 2022-07-28 18:32:56 +02:00
David Hoppenbrouwers
897a133869 Remove rep_param_rev 2022-07-28 18:32:56 +02:00
David Hoppenbrouwers
45e2996c96 Fix suboptimal codegen in memset 2022-07-28 18:32:56 +02:00
David Hoppenbrouwers
a977b01090 Align destination in mem* instructions. 
While misaligned reads are generally fast, misaligned writes aren't and
can have severe penalties.
 2022-07-28 18:32:51 +02:00
Amanieu d'Antras
0cc9a7e4a6 Merge pull request #478 from Lokathor/weak-linkage-for-division 2022-07-28 18:14:59 +02:00
Nicholas Bishop
586e2b38ef Enable win64_128bit_abi_hack for x86_64-unknown-uefi 
The `x86_64-unknown-uefi` target is Windows-like [1], and requires the
same altered ABI for some 128-bit integer intrinsics.

See also https://github.com/rust-lang/rust/issues/86494.

[1]: https://github.com/rust-lang/rust/blob/master/compiler/rustc_target/src/spec/x86_64_unknown_uefi.rs
 2022-07-28 11:55:59 -04:00
Lokathor
8568a33255 restrict linkage to platforms using ELF binaries 
on windows and apple (which don't use ELF) we can't apply weak linkage
 2022-07-28 09:42:18 -06:00
Lokathor
1070134a56 Merge pull request #1 from rust-lang/master 
updates from main
 2022-07-28 09:36:02 -06:00
Ayush Singh
f2ac36348c Use all of src/math for UEFI 
This is needed for libtest
 2022-07-28 20:51:44 +05:30
Lokathor
011f92c877 add weak linkage to the ARM AEABI division functions 2022-07-22 17:14:18 -06:00
Amanieu d'Antras
d14c5a43b7 Merge pull request #471 from Demindiro/x86_64-fix-recursive-memcmp 2022-06-12 02:19:30 +02:00
David Hoppenbrouwers
08f4f4007d Fix infinite recursion in x86_64 memcmp if SSE2 is not present 
Fixes #470
 2022-06-11 09:20:01 +02:00
Sean Cross
7cdad114a5 math: compile math functions for Xous 
This adds support for Xous, enabling users to call math functions on
primitives such as `cos()`.

Signed-off-by: Sean Cross <sean@xobs.io>
 2022-06-09 09:12:44 +08:00
David Hoppenbrouwers
cb63d7d500 Use unchecked_div/rem 2022-05-31 08:20:30 +02:00
David Hoppenbrouwers
b94e93ead8 Slightly optimize main (32b) memcmp loop 
It only seems to save a single instruction at first sight yet the
effects are significant.
 2022-05-28 22:46:16 +02:00
David Hoppenbrouwers
95d2cd5502 Fix rustfmt sillyness 2022-05-28 08:16:46 +02:00
David Hoppenbrouwers
217748f91b Fix panic not being optimized out. 
I don't know why it isn't being optimized out though, which worries
me.
 2022-05-28 01:24:17 +02:00
David Hoppenbrouwers
2071d05a19 Always inline compare_bytes::cmp 2022-05-28 00:50:05 +02:00