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zig/lib/std/special/compiler_rt
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Jan Philipp Hafer 1ea650bb75 compiler_rt: add __popcountsi2, __popcountdi2 and __popcountti2 
- apply simpler approach than LLVM for __popcountdi2
  taken from The Art of Computer Programming and generalized
- rename popcountdi2.zig to popcount.zig
- test cases derived from popcountdi2_test.zig
- tests: compare naive approach 10_000 times with
  random numbers created from naive seed 42

    See #1290
2021-11-29 12:50:25 -08:00
..
addXf3_test.zig
remove redundant license headers from zig standard library
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addXf3.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
arm.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
ashldi3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
ashlti3_test.zig
remove redundant license headers from zig standard library
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ashrdi3_test.zig
remove redundant license headers from zig standard library
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ashrti3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
atomics.zig
compiler_rt: disable spinlocks for atomic instrinsics for bpf
2021-11-18 13:16:35 -05:00
aulldiv.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
aullrem.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
clear_cache.zig
migrate from std.Target.current to @import("builtin").target
2021-10-04 23:48:55 -07:00
clzdi2_test.zig
compiler_rt: add __clzdi2 and __clzti2
2021-09-01 16:15:21 -04:00
clzsi2_test.zig
compiler_rt: add __clzdi2 and __clzti2
2021-09-01 16:15:21 -04:00
clzti2_test.zig
compiler_rt: add __clzdi2 and __clzti2
2021-09-01 16:15:21 -04:00
comparedf2_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
comparesf2_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
compareXf2.zig
stage2: LLVM backend: miscompilation fixes
2021-10-05 20:36:04 -07:00
count0bits.zig
migrate from std.Target.current to @import("builtin").target
2021-10-04 23:48:55 -07:00
divdf3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
divdf3.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
divsf3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
divsf3.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
divtf3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
divtf3.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
divti3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
divti3.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
emutls.zig
migrate from std.Target.current to @import("builtin").target
2021-10-04 23:48:55 -07:00
extendXfYf2_test.zig
compiler-rt: Fix f16 API declarations to be consistent
2021-11-04 14:30:35 -04:00
extendXfYf2.zig
compiler-rt: Fix f16 API declarations to be consistent
2021-11-04 14:30:35 -04:00
fixdfdi_test.zig
remove redundant license headers from zig standard library
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fixdfdi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixdfsi_test.zig
remove redundant license headers from zig standard library
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fixdfsi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixdfti_test.zig
remove redundant license headers from zig standard library
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fixdfti.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixint_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixint.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixsfdi_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixsfdi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixsfsi_test.zig
remove redundant license headers from zig standard library
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fixsfsi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixsfti_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixsfti.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixtfdi_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixtfdi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixtfsi_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixtfsi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixtfti_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixtfti.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixuint.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixunsdfdi_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixunsdfdi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixunsdfsi_test.zig
remove redundant license headers from zig standard library
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fixunsdfsi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixunsdfti_test.zig
remove redundant license headers from zig standard library
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fixunsdfti.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixunssfdi_test.zig
remove redundant license headers from zig standard library
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fixunssfdi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixunssfsi_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixunssfsi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixunssfti_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixunssfti.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixunstfdi_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixunstfdi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixunstfsi_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixunstfsi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixunstfti_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
fixunstfti.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floatdidf_test.zig
remove redundant license headers from zig standard library
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floatdidf.zig
std, compiler-rt: remove test names where applicable
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floatdisf_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
floatditf_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
floatditf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floatsiXf.zig
remove redundant license headers from zig standard library
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floattidf_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
floattidf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floattisf_test.zig
remove redundant license headers from zig standard library
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floattitf_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
floattitf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floatundidf_test.zig
remove redundant license headers from zig standard library
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floatundidf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floatundisf.zig
remove redundant license headers from zig standard library
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floatunditf_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
floatunditf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floatunsidf.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
floatunsisf.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
floatunsitf_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
floatunsitf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floatuntidf_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
floatuntidf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floatuntisf_test.zig
remove redundant license headers from zig standard library
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floatuntisf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floatuntitf_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
floatuntitf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floatXisf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
int.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
lshrdi3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
lshrti3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
modti3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
modti3.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
muldi3_test.zig
remove redundant license headers from zig standard library
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muldi3.zig
migrate from std.Target.current to @import("builtin").target
2021-10-04 23:48:55 -07:00
mulodi4_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
mulodi4.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
muloti4_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
muloti4.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
multi3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
multi3.zig
migrate from std.Target.current to @import("builtin").target
2021-10-04 23:48:55 -07:00
mulXf3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
mulXf3.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
negXf2.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
os_version_check.zig
compiler_rt: implement __isPlatformVersionAtLeast (Objective-C @available expressions) for Darwin (#10232)
2021-11-29 14:54:23 -05:00
popcount.zig
compiler_rt: add __popcountsi2, __popcountdi2 and __popcountti2
2021-11-29 12:50:25 -08:00
popcountdi2_test.zig
compiler_rt: add __popcountsi2, __popcountdi2 and __popcountti2
2021-11-29 12:50:25 -08:00
popcountsi2_test.zig
compiler_rt: add __popcountsi2, __popcountdi2 and __popcountti2
2021-11-29 12:50:25 -08:00
popcountti2_test.zig
compiler_rt: add __popcountsi2, __popcountdi2 and __popcountti2
2021-11-29 12:50:25 -08:00
README.md
mv std/ lib/
2019-09-25 23:35:41 -04:00
shift.zig
migrate from std.Target.current to @import("builtin").target
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sparc.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
stack_probe.zig
migrate from std.Target.current to @import("builtin").target
2021-10-04 23:48:55 -07:00
truncXfYf2_test.zig
compiler-rt: Fix f16 API declarations to be consistent
2021-11-04 14:30:35 -04:00
truncXfYf2.zig
compiler-rt: Fix f16 API declarations to be consistent
2021-11-04 14:30:35 -04:00
udivmod.zig
migrate from std.Target.current to @import("builtin").target
2021-10-04 23:48:55 -07:00
udivmoddi4_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
udivmodti4_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
udivmodti4.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
udivti3.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
umodti3.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00

README.md

This compiler-rt library is ported from LLVM.

It's needed because LLVM emits library calls to compiler-rt when hardware lacks functionality, for example, 64-bit integer multiplication on 32-bit x86.

This library is automatically built as-needed for the compilation target and then statically linked and therefore is a transparent dependency for the programmer.

Any bugs should be solved by trying to duplicate the bug upstream.

  • If the bug exists upstream, get it fixed with the LLVM team and then port the fix downstream to Zig.
  • If the bug only exists in Zig, something went wrong porting the code, and you can run the C code and Zig code side by side in a debugger to figure out what's happening differently.