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
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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
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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
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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.
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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
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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
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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
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updates from main
2022-07-28 09:36:02 -06:00
Ayush Singh
f2ac36348c
Use all of src/math for UEFI
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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
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Fixes #470
2022-06-11 09:20:01 +02:00
Sean Cross
7cdad114a5
math: compile math functions for Xous
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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
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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.
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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
David Hoppenbrouwers
e7a8932e3b
Fix CI, better memcmp tests
2022-05-28 00:10:55 +02:00
David Hoppenbrouwers
4dbd8387f9
Implement faster memcmp for x86_64
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x86_64 can load unaligned words in a single cache line as fast as
aligned words. Even when crossing cache or page boundaries it is just as
fast to do an unaligned word read instead of multiple byte reads.
Also add a couple more tests & benchmarks.
2022-05-27 21:58:39 +02:00
Amanieu d'Antras
18623bffad
Merge pull request #464 from m-ou-se/floatconv2
2022-05-26 20:53:14 +02:00
Mara Bos
ca517a25e7
Explicitly use parentheses for associativity of shift operators.
2022-05-26 17:21:21 +02:00
Patryk Wychowaniec
ac47841ce2
Add avr_skip for __udivti3 & __umodti3
2022-05-24 19:49:08 +02:00
Amanieu d'Antras
092bbb67d4
Merge pull request #465 from thomcc/cast-before-transmute
2022-05-24 19:24:15 +02:00
Amanieu d'Antras
f1fe94e882
Merge pull request #462 from Patryk27/avr
2022-05-24 16:41:59 +02:00
Thom Chiovoloni
dcdd9bbc56
Avoid int to ptr transmute by casting first
2022-05-23 23:34:10 -07:00
Mara Bos
425c78ee7a
Faster int<->float conversions.
2022-05-20 16:25:18 +02:00
Mara Bos
7ed26a7e7a
De-duplicate 128 bit float conv intrinsics using cfg_attr.
2022-05-20 15:04:36 +02:00
Mara Bos
2063e07b35
Support cfg_attr attributes in intrinsics!() macro.
2022-05-20 15:01:50 +02:00
Patryk Wychowaniec
a695a800d5
Fix division on AVRs
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For division and modulo, AVR uses a custom calling convention that does
not match compiler_builtins' expectations, leading to non-working code¹.
Ideally we'd just use hand-written naked functions (as, afair, ARM
does), but that's a lot of code to port², so hopefully we'll be able to
do it gradually later.
For the time being, I'd suggest not compiling problematic functions for
AVR target - this causes avr-gcc (which is a mandatory part of Rust+AVR
toolchain anyway) to link hand-written assembly from libgcc, which is
confirmed to work.
I've tested the code locally on simavr and the patch seems to be working
correctly :-)
¹ https://github.com/rust-lang/rust/issues/82242 ,
https://github.com/rust-lang/rust/issues/83281
² 31048012db/libgcc/config/avr/lib1funcs.Shttps://github.com/rust-lang/rust/issues/82242
Closes https://github.com/rust-lang/rust/issues/83281
2022-05-17 23:21:45 +02:00
Johannes Stoelp
65ec71d386
rv32 rv64: adapt conditional compilation
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Adapt conditional compilation as:
rv32i : riscv:__mulsi3, riscv:__muldi3
rv32im: riscv:__mulsi3, int/mul:__muldi3
rv64i : riscv:__mulsi3, riscv:__muldi3
rv64im: riscv:__mulsi3, int/mul:__muldi3
2022-05-12 00:34:49 +02:00
Johannes Stoelp
10971912e8
rv64 implement muldi3 intrinsic
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Implement the __muldi3 intrinsic to prevent infinite recursion during
multiplication on rv64 without the 'm' extension.
2022-05-02 23:00:12 +02:00
Vadim Petrochenkov
7f535824f5
Provide an implementation of strlen to be used as a fallback
2022-03-18 21:42:11 +03:00
Nikita Popov
0575846f80
Handle Win64 builtins ABI change in LLVM 14
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As of https://reviews.llvm.org/D110413 , these no longer use the
unadjusted ABI (and use normal C ABI instead, passing i128
indirectly and returning it as <2 x i64>).
To support both LLVM 14 and older versions, rustc will expose a
"llvm14-builtins-abi" target feature, based on which
compiler-builtins can chose the appropriate ABI.
This is needed for rust-lang/rust#93577 .
2022-02-15 16:29:29 +01:00
Amanieu d'Antras
5bdeade2c4
Fix typo in __aeabi_uldivmod
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Accidentally introduced in #452
2022-02-09 21:01:07 +00:00
