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rustc-builtins

[WIP] Porting compiler-rt intrinsics to Rust

See rust-lang/rust#35437.

Contributing

  1. Pick one or more intrinsics from the [pending list][/#progress].
  2. Fork this repository
  3. Port the intrinsic(s) and their corresponding unit tests from their C implementation to Rust.
  4. Send a Pull Request (PR)
  5. Once the PR passes our extensive testing infrastructure, we'll merge it!
  6. Celebrate 🎉

Progress

  • adddf3.c
  • addsf3.c
  • arm/adddf3vfp.S
  • arm/addsf3vfp.S
  • arm/aeabi_dcmp.S
  • arm/aeabi_fcmp.S
  • arm/aeabi_idivmod.S
  • arm/aeabi_ldivmod.S
  • arm/aeabi_memcpy.S
  • arm/aeabi_memmove.S
  • arm/aeabi_memset.S
  • arm/aeabi_uidivmod.S
  • arm/aeabi_uldivmod.S
  • arm/divdf3vfp.S
  • arm/divmodsi4.S
  • arm/divsf3vfp.S
  • arm/divsi3.S
  • arm/eqdf2vfp.S
  • arm/eqsf2vfp.S
  • arm/extendsfdf2vfp.S
  • arm/fixdfsivfp.S
  • arm/fixsfsivfp.S
  • arm/fixunsdfsivfp.S
  • arm/fixunssfsivfp.S
  • arm/floatsidfvfp.S
  • arm/floatsisfvfp.S
  • arm/floatunssidfvfp.S
  • arm/floatunssisfvfp.S
  • arm/gedf2vfp.S
  • arm/gesf2vfp.S
  • arm/gtdf2vfp.S
  • arm/gtsf2vfp.S
  • arm/ledf2vfp.S
  • arm/lesf2vfp.S
  • arm/ltdf2vfp.S
  • arm/ltsf2vfp.S
  • arm/modsi3.S
  • arm/muldf3vfp.S
  • arm/mulsf3vfp.S
  • arm/nedf2vfp.S
  • arm/negdf2vfp.S
  • arm/negsf2vfp.S
  • arm/nesf2vfp.S
  • arm/softfloat-alias.list
  • arm/subdf3vfp.S
  • arm/subsf3vfp.S
  • arm/truncdfsf2vfp.S
  • arm/udivmodsi4.S
  • arm/udivsi3.S
  • arm/umodsi3.S
  • arm/unorddf2vfp.S
  • arm/unordsf2vfp.S
  • ashldi3.c
  • ashlti3.c
  • ashrdi3.c
  • ashrti3.c
  • divdf3.c
  • divdi3.c
  • divsf3.c
  • divsi3.c
  • divti3.c
  • extendhfsf2.c
  • extendsfdf2.c
  • fixdfdi.c
  • fixdfsi.c
  • fixdfti.c
  • fixsfdi.c
  • fixsfsi.c
  • fixsfti.c
  • fixunsdfdi.c
  • fixunsdfsi.c
  • fixunsdfti.c
  • fixunssfdi.c
  • fixunssfsi.c
  • fixunssfti.c
  • floatdidf.c
  • floatdisf.c
  • floatsidf.c
  • floatsisf.c
  • floattidf.c
  • floattisf.c
  • floatundidf.c
  • floatundisf.c
  • floatunsidf.c
  • floatunsisf.c
  • floatuntidf.c
  • floatuntisf.c
  • i386/ashldi3.S
  • i386/ashrdi3.S
  • i386/chkstk.S
  • i386/chkstk2.S
  • i386/divdi3.S
  • i386/lshrdi3.S
  • i386/moddi3.S
  • i386/muldi3.S
  • i386/udivdi3.S
  • i386/umoddi3.S
  • lshrdi3.c
  • lshrti3.c
  • moddi3.c
  • modsi3.c
  • modti3.c
  • muldf3.c
  • muldi3.c
  • mulodi4.c
  • mulosi4.c
  • muloti4.c
  • mulsf3.c
  • multi3.c
  • powidf2.c
  • powisf2.c
  • subdf3.c
  • subsf3.c
  • truncdfhf2.c
  • truncdfsf2.c
  • truncsfhf2.c
  • udivdi3.c
  • udivmoddi4.c
  • udivmodsi4.c
  • udivsi3.c
  • udivti3.c
  • umoddi3.c
  • umodsi3.c
  • umodti3.c
  • x86_64/chkstk.S
  • x86_64/chkstk2.S

Unimplemented functions

These builtins involve floating-point types ("f128", "f80" and complex numbers) that are not supported by Rust.

  • addtf3.c
  • comparetf2.c
  • divdc3.c
  • divsc3.c
  • divtc3.c
  • divtf3.c
  • divxc3.c
  • extenddftf2.c
  • extendsftf2.c
  • fixtfdi.c
  • fixtfsi.c
  • fixtfti.c
  • fixunstfdi.c
  • fixunstfsi.c
  • fixunstfti.c
  • fixunsxfdi.c
  • fixunsxfsi.c
  • fixunsxfti.c
  • fixxfdi.c
  • fixxfti.c
  • floatditf.c
  • floatdixf.c
  • floatsitf.c
  • floattixf.c
  • floatunditf.c
  • floatundixf.c
  • floatunsitf.c
  • floatuntixf.c
  • i386/floatdixf.S
  • i386/floatundixf.S
  • muldc3.c
  • mulsc3.c
  • multc3.c
  • multf3.c
  • mulxc3.c
  • powitf2.c
  • powixf2.c
  • ppc/divtc3.c
  • ppc/fixtfdi.c
  • ppc/fixunstfdi.c
  • ppc/floatditf.c
  • ppc/floatunditf.c
  • ppc/gcc_qadd.c
  • ppc/gcc_qdiv.c
  • ppc/gcc_qmul.c
  • ppc/gcc_qsub.c
  • ppc/multc3.c
  • subtf3.c
  • trunctfdf2.c
  • trunctfsf2.c
  • x86_64/floatdixf.c
  • x86_64/floatundixf.S

These builtins are never called by LLVM.

  • absvdi2.c
  • absvsi2.c
  • absvti2.c
  • addvdi3.c
  • addvsi3.c
  • addvti3.c
  • arm/aeabi_cdcmp.S
  • arm/aeabi_cdcmpeq_check_nan.c
  • arm/aeabi_cfcmp.S
  • arm/aeabi_cfcmpeq_check_nan.c
  • arm/aeabi_div0.c
  • arm/aeabi_drsub.c
  • arm/aeabi_frsub.c
  • arm/aeabi_memcmp.S
  • arm/bswapdi2.S
  • arm/bswapsi2.S
  • arm/clzdi2.S
  • arm/clzsi2.S
  • arm/comparesf2.S
  • arm/restore_vfp_d8_d15_regs.S
  • arm/save_vfp_d8_d15_regs.S
  • arm/switch16.S
  • arm/switch32.S
  • arm/switch8.S
  • arm/switchu8.S
  • clzdi2.c
  • clzsi2.c
  • clzti2.c
  • cmpdi2.c
  • cmpti2.c
  • comparedf2.c
  • comparesf2.c
  • ctzdi2.c
  • ctzsi2.c
  • ctzti2.c
  • divmoddi4.c
  • divmodsi4.c
  • ffsdi2.c
  • ffsti2.c
  • mulvdi3.c
  • mulvsi3.c
  • mulvti3.c
  • negdf2.c
  • negdi2.c
  • negsf2.c
  • negti2.c
  • negvdi2.c
  • negvsi2.c
  • negvti2.c
  • paritydi2.c
  • paritysi2.c
  • parityti2.c
  • popcountdi2.c
  • popcountsi2.c
  • popcountti2.c
  • ppc/restFP.S
  • ppc/saveFP.S
  • subvdi3.c
  • subvsi3.c
  • subvti3.c
  • ucmpdi2.c
  • ucmpti2.c
  • udivmodti4.c

Rust only exposes atomic types on platforms that support them, and therefore does not need to fall back to software implementations.

  • arm/sync_fetch_and_add_4.S
  • arm/sync_fetch_and_add_8.S
  • arm/sync_fetch_and_and_4.S
  • arm/sync_fetch_and_and_8.S
  • arm/sync_fetch_and_max_4.S
  • arm/sync_fetch_and_max_8.S
  • arm/sync_fetch_and_min_4.S
  • arm/sync_fetch_and_min_8.S
  • arm/sync_fetch_and_nand_4.S
  • arm/sync_fetch_and_nand_8.S
  • arm/sync_fetch_and_or_4.S
  • arm/sync_fetch_and_or_8.S
  • arm/sync_fetch_and_sub_4.S
  • arm/sync_fetch_and_sub_8.S
  • arm/sync_fetch_and_umax_4.S
  • arm/sync_fetch_and_umax_8.S
  • arm/sync_fetch_and_umin_4.S
  • arm/sync_fetch_and_umin_8.S
  • arm/sync_fetch_and_xor_4.S
  • arm/sync_fetch_and_xor_8.S
  • arm/sync_synchronize.S
  • atomic.c
  • atomic_flag_clear.c
  • atomic_flag_clear_explicit.c
  • atomic_flag_test_and_set.c
  • atomic_flag_test_and_set_explicit.c
  • atomic_signal_fence.c
  • atomic_thread_fence.c

Miscellaneous functionality that is not used by Rust.

  • apple_versioning.c
  • clear_cache.c
  • emutls.c
  • enable_execute_stack.c
  • eprintf.c
  • gcc_personality_v0.c
  • trampoline_setup.c

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.

  • i386/floatdidf.S
  • i386/floatdisf.S
  • i386/floatundidf.S
  • i386/floatundisf.S
  • x86_64/floatundidf.S
  • x86_64/floatundisf.S
  • x86_64/floatdidf.c
  • x86_64/floatdisf.c

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.