Merge pull request #644 from tgross35/update-readme
Sync readme intrinsics with LLVM
This commit is contained in:
Amanieu d'Antras
GitHub
commit
1ea8f24abf
1 changed files with 108 additions and 21 deletions
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@ -16,13 +16,13 @@ you can use this crate to get those intrinsics and solve the linker errors. To
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do that, add this crate somewhere in the dependency graph of the crate you are
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building:
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``` toml
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```toml
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# Cargo.toml
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[dependencies]
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compiler_builtins = { git = "https://github.com/rust-lang/compiler-builtins" }
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```
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``` rust
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```rust
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extern crate compiler_builtins;
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// ...
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@ -57,7 +57,7 @@ features = ["c"]
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5. Add the intrinsic to `examples/intrinsics.rs` to verify it can be linked on
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all targets.
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6. Send a Pull Request (PR).
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7. Once the PR passes our extensive [testing infrastructure][4], we'll merge it!
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7. Once the PR passes our extensive testing infrastructure, we'll merge it!
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8. Celebrate :tada:
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[1]: https://github.com/rust-lang/llvm-project/tree/9e3de9490ff580cd484fbfa2908292b4838d56e7/compiler-rt/test/builtins/Unit
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@ -91,7 +91,7 @@ obtained with the following:
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```sh
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curl -L -o rustc-llvm-18.0.tar.gz https://github.com/rust-lang/llvm-project/archive/rustc/18.0-2024-02-13.tar.gz
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tar xzf rustc-llvm-18.0.tar.gz --strip-components 1 llvm-project-rustc-18.0-2024-02-13/compiler-rt
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````
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```
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Local targets may also be tested with `./ci/run.sh [target]`.
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@ -100,9 +100,11 @@ rely on CI.
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## Progress
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- [x] aarch64/chkstk.S
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- [x] adddf3.c
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- [x] addsf3.c
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- [x] arm/adddf3vfp.S
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- [x] arm/addsf3.S
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- [x] arm/addsf3vfp.S
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- [x] arm/aeabi_dcmp.S
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- [x] arm/aeabi_fcmp.S
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@ -113,6 +115,7 @@ rely on CI.
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- [x] arm/aeabi_memset.S
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- [x] arm/aeabi_uidivmod.S
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- [x] arm/aeabi_uldivmod.S
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- [ ] arm/chkstk.S
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- [x] arm/divdf3vfp.S
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- [ ] arm/divmodsi4.S (generic version is done)
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- [x] arm/divsf3vfp.S
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@ -154,6 +157,12 @@ rely on CI.
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- [ ] arm/unordsf2vfp.S
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- [x] ashldi3.c
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- [x] ashrdi3.c
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- [ ] avr/divmodhi4.S
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- [ ] avr/divmodqi4.S
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- [ ] avr/mulhi3.S
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- [ ] avr/mulqi3.S
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- [ ] avr/udivmodhi4.S
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- [ ] avr/udivmodqi4.S
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- [x] bswapdi2.c
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- [x] bswapsi2.c
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- [x] bswapti2.c
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@ -166,6 +175,7 @@ rely on CI.
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- [x] divdi3.c
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- [x] divmoddi4.c
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- [x] divmodsi4.c
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- [x] divmodti4.c
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- [x] divsf3.c
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- [x] divsi3.c
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- [x] extendsfdf2.c
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@ -204,6 +214,8 @@ rely on CI.
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- [x] mulsf3.c
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- [x] powidf2.c
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- [x] powisf2.c
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- [ ] riscv/muldi3.S
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- [ ] riscv/mulsi3.S
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- [x] subdf3.c
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- [x] subsf3.c
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- [x] truncdfsf2.c
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@ -236,7 +248,8 @@ These builtins are needed to support 128-bit integers.
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- [x] udivti3.c
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- [x] umodti3.c
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These builtins are needed to support `f16` and `f128`, which are in the process of being added to Rust.
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These builtins are needed to support `f16` and `f128`, which are in the process
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of being added to Rust.
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- [x] addtf3.c
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- [x] comparetf2.c
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@ -253,14 +266,12 @@ These builtins are needed to support `f16` and `f128`, which are in the process
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- [x] fixunstfti.c
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- [ ] floatditf.c
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- [ ] floatsitf.c
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- [ ] floattitf.c
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- [ ] floatunditf.c
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- [ ] floatunsitf.c
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- [ ] floatuntitf.c
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- [x] multf3.c
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- [ ] powitf2.c
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- [ ] ppc/fixtfdi.c
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- [ ] ppc/fixunstfdi.c
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- [ ] ppc/floatditf.c
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- [ ] ppc/floatunditf.c
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- [x] subtf3.c
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- [x] truncdfhf2.c
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- [x] truncsfhf2.c
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@ -268,14 +279,42 @@ These builtins are needed to support `f16` and `f128`, which are in the process
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- [x] trunctfhf2.c
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- [x] trunctfsf2.c
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These builtins are used by the Hexagon DSP
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- [ ] hexagon/common_entry_exit_abi1.S
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- [ ] hexagon/common_entry_exit_abi2.S
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- [ ] hexagon/common_entry_exit_legacy.S
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- [x] hexagon/dfaddsub.S~~
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- [x] hexagon/dfdiv.S~~
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- [x] hexagon/dffma.S~~
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- [x] hexagon/dfminmax.S~~
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- [x] hexagon/dfmul.S~~
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- [x] hexagon/dfsqrt.S~~
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- [x] hexagon/divdi3.S~~
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- [x] hexagon/divsi3.S~~
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- [x] hexagon/fastmath2_dlib_asm.S~~
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- [x] hexagon/fastmath2_ldlib_asm.S~~
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- [x] hexagon/fastmath_dlib_asm.S~~
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- [x] hexagon/memcpy_forward_vp4cp4n2.S~~
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- [x] hexagon/memcpy_likely_aligned.S~~
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- [x] hexagon/moddi3.S~~
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- [x] hexagon/modsi3.S~~
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- [x] hexagon/sfdiv_opt.S~~
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- [x] hexagon/sfsqrt_opt.S~~
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- [x] hexagon/udivdi3.S~~
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- [x] hexagon/udivmoddi4.S~~
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- [x] hexagon/udivmodsi4.S~~
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- [x] hexagon/udivsi3.S~~
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- [x] hexagon/umoddi3.S~~
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- [x] hexagon/umodsi3.S~~
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## Unimplemented functions
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These builtins involve floating-point types ("`f80`" and complex numbers) that are not supported by Rust.
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These builtins are for x87 `f80` floating-point numbers that are not supported
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by Rust.
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- ~~divdc3.c~~
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- ~~divsc3.c~~
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- ~~divtc3.c~~
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- ~~divxc3.c~~
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- ~~extendxftf2.c~~
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- ~~fixunsxfdi.c~~
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- ~~fixunsxfsi.c~~
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- ~~fixunsxfti.c~~
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@ -287,19 +326,45 @@ These builtins involve floating-point types ("`f80`" and complex numbers) that a
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- ~~floatuntixf.c~~
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- ~~i386/floatdixf.S~~
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- ~~i386/floatundixf.S~~
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- ~~muldc3.c~~
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- ~~mulsc3.c~~
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- ~~multc3.c~~
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- ~~mulxc3.c~~
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- ~~powixf2.c~~
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- ~~x86_64/floatdixf.c~~
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- ~~x86_64/floatundixf.S~~
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These builtins are for IBM "extended double" non-IEEE 128-bit floating-point
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numbers.
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- ~~ppc/divtc3.c~~
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- ~~ppc/fixtfdi.c~~
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- ~~ppc/fixtfti.c~~
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- ~~ppc/fixunstfdi.c~~
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- ~~ppc/fixunstfti.c~~
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- ~~ppc/floatditf.c~~
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- ~~ppc/floattitf.c~~
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- ~~ppc/floatunditf.c~~
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- ~~ppc/gcc_qadd.c~~
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- ~~ppc/gcc_qdiv.c~~
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- ~~ppc/gcc_qmul.c~~
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- ~~ppc/gcc_qsub.c~~
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- ~~ppc/multc3.c~~
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- ~~x86_64/floatdixf.c~~
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- ~~x86_64/floatundixf.S~~
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These builtins are for 16-bit brain floating-point numbers that are not
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supported by Rust.
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- ~~truncdfbf2.c~~
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- ~~truncsfbf2.c~~
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- ~~trunctfxf2.c~~
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These builtins involve complex floating-point types that are not supported by
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Rust.
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- ~~divdc3.c~~
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- ~~divsc3.c~~
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- ~~divtc3.c~~
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- ~~divxc3.c~~
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- ~~muldc3.c~~
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- ~~mulsc3.c~~
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- ~~multc3.c~~
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- ~~mulxc3.c~~
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- ~~powixf2.c~~
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These builtins are never called by LLVM.
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@ -333,6 +398,7 @@ These builtins are never called by LLVM.
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- ~~ctzdi2.c~~
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- ~~ctzsi2.c~~
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- ~~ctzti2.c~~
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- ~~ffssi2.c~~
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- ~~ffsdi2.c~~ - this is [called by gcc][jemalloc-fail] though!
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- ~~ffsti2.c~~
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- ~~mulvdi3.c~~
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@ -395,13 +461,34 @@ Rust only exposes atomic types on platforms that support them, and therefore doe
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Miscellaneous functionality that is not used by Rust.
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- ~~aarch64/fp_mode.c~~
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- ~~aarch64/lse.S~~ (LSE atomics)
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- ~~aarch64/sme-abi-init.c~~ (matrix extension)
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- ~~aarch64/sme-abi.S~~ (matrix extension)
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- ~~aarch64/sme-libc-routines.c~~ (matrix extension)
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- ~~apple_versioning.c~~
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- ~~arm/fp_mode.c~~
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- ~~avr/exit.S~~
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- ~~clear_cache.c~~
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- ~~cpu_model/aarch64.c~~
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- ~~cpu_model/x86.c~~
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- ~~crtbegin.c~~
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- ~~crtend.c~~
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- ~~emutls.c~~
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- ~~enable_execute_stack.c~~
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- ~~eprintf.c~~
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- ~~fp_mode.c~~ (float exception handling)
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- ~~gcc_personality_v0.c~~
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- ~~i386/fp_mode.c~~
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- ~~int_util.c~~
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- ~~loongarch/fp_mode.c~~
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- ~~os_version_check.c~~
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- ~~riscv/fp_mode.c~~
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- ~~riscv/restore.S~~ (callee-saved registers)
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- ~~riscv/save.S~~ (callee-saved registers)
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- ~~trampoline_setup.c~~
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- ~~ve/grow_stack.S~~
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- ~~ve/grow_stack_align.S~~
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Floating-point implementations of builtins that are only called from soft-float code. It would be better to simply use the generic soft-float versions in this case.
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