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zig/lib/std/special/compiler_rt
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Jan Philipp Hafer 01d48e55a5 compiler_rt: optimize mulo 
- use usize to decide if register size is big enough to store
  multiplication result or if division is necessary
- multiplication routine with check of integer bounds
- wrapping multipliation and division routine from Hacker's Delight
2022-02-05 01:35:46 -05:00
..
absv.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
absvdi2_test.zig
compiler_rt: add __absvsi2, __absvdi2, __absvti2
2021-12-26 13:21:18 -08:00
absvsi2_test.zig
compiler_rt: add __absvsi2, __absvdi2, __absvti2
2021-12-26 13:21:18 -08:00
absvti2_test.zig
compiler_rt: add __absvsi2, __absvdi2, __absvti2
2021-12-26 13:21:18 -08:00
addXf3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
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
2021-08-24 12:25:09 -07:00
ashrdi3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
ashrti3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
atomics.zig
compiler-rt: small refactor in atomics
2022-01-02 17:58:54 -07:00
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
bswap.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
bswapdi2_test.zig
compiler_rt: add __bswapsi2, __bswapdi2 and __bswapti2
2021-12-11 01:43:37 -08:00
bswapsi2_test.zig
compiler_rt: add __bswapsi2, __bswapdi2 and __bswapti2
2021-12-11 01:43:37 -08:00
bswapti2_test.zig
compiler_rt: add __bswapsi2, __bswapdi2 and __bswapti2
2021-12-11 01:43:37 -08:00
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 __ctzsi2, __ctzdi2 and __ctzti2
2021-11-30 18:31:16 -08:00
clzsi2_test.zig
compiler_rt: add __clzdi2 and __clzti2
2021-09-01 16:15:21 -04:00
clzti2_test.zig
compiler_rt: add __ctzsi2, __ctzdi2 and __ctzti2
2021-11-30 18:31:16 -08:00
cmp.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
cmpdi2_test.zig
compiler_rt: add __cmpXi2 and __ucmpXi2
2021-12-14 14:21:30 -08:00
cmpsi2_test.zig
compiler_rt: add __cmpXi2 and __ucmpXi2
2021-12-14 14:21:30 -08:00
cmpti2_test.zig
compiler_rt: add __cmpXi2 and __ucmpXi2
2021-12-14 14:21:30 -08:00
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
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
ctzdi2_test.zig
compiler_rt: add __ctzsi2, __ctzdi2 and __ctzti2
2021-11-30 18:31:16 -08:00
ctzsi2_test.zig
compiler_rt: add __ctzsi2, __ctzdi2 and __ctzti2
2021-11-30 18:31:16 -08:00
ctzti2_test.zig
compiler_rt: add __ctzsi2, __ctzdi2 and __ctzti2
2021-11-30 18:31:16 -08:00
divdf3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
divdf3.zig
Sema: implement peer type resolution of signed and unsigned ints
2022-01-02 14:11:37 -07:00
divsf3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
divsf3.zig
Sema: implement peer type resolution of signed and unsigned ints
2022-01-02 14:11:37 -07:00
divtf3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
divtf3.zig
Sema: implement peer type resolution of signed and unsigned ints
2022-01-02 14:11:37 -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
stage1, stage2: rename c_void to anyopaque (#10316)
2021-12-19 00:24:45 -05:00
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
ffsdi2_test.zig
compiler_rt: add __ffssi2, __ffsdi2 and __ffsti2 (#10268)
2021-12-04 16:23:33 -05:00
ffssi2_test.zig
compiler_rt: add __ffssi2, __ffsdi2 and __ffsti2 (#10268)
2021-12-04 16:23:33 -05:00
ffsti2_test.zig
compiler_rt: add __ffssi2, __ffsdi2 and __ffsti2 (#10268)
2021-12-04 16:23:33 -05:00
fixdfdi_test.zig
std lib API deprecations for the upcoming 0.9.0 release
2021-11-30 00:13:07 -07:00
fixdfdi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixdfsi_test.zig
std lib API deprecations for the upcoming 0.9.0 release
2021-11-30 00:13:07 -07:00
fixdfsi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixdfti_test.zig
std lib API deprecations for the upcoming 0.9.0 release
2021-11-30 00:13:07 -07:00
fixdfti.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixint_test.zig
std lib API deprecations for the upcoming 0.9.0 release
2021-11-30 00:13:07 -07:00
fixint.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixsfdi_test.zig
std lib API deprecations for the upcoming 0.9.0 release
2021-11-30 00:13:07 -07:00
fixsfdi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixsfsi_test.zig
std lib API deprecations for the upcoming 0.9.0 release
2021-11-30 00:13:07 -07:00
fixsfsi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixsfti_test.zig
std lib API deprecations for the upcoming 0.9.0 release
2021-11-30 00:13:07 -07:00
fixsfti.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixtfdi_test.zig
std lib API deprecations for the upcoming 0.9.0 release
2021-11-30 00:13:07 -07:00
fixtfdi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixtfsi_test.zig
std lib API deprecations for the upcoming 0.9.0 release
2021-11-30 00:13:07 -07:00
fixtfsi.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixtfti_test.zig
std lib API deprecations for the upcoming 0.9.0 release
2021-11-30 00:13:07 -07:00
fixtfti.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
fixuint.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -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
2021-08-24 12:25:09 -07:00
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
2021-08-24 12:25:09 -07:00
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
2021-08-24 12:25:09 -07:00
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
2021-08-24 12:25:09 -07:00
floatdidf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
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
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
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
2021-08-24 12:25:09 -07:00
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
2021-08-24 12:25:09 -07:00
floatundidf.zig
std, compiler-rt: remove test names where applicable
2021-09-01 17:54:06 -07:00
floatundisf.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
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
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
floatunsisf.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -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
2021-08-24 12:25:09 -07:00
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
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
int.zig
lint: duplicate import (#10519)
2022-01-07 00:06:06 -05:00
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
2021-08-24 12:25:09 -07:00
muldi3.zig
migrate from std.Target.current to @import("builtin").target
2021-10-04 23:48:55 -07:00
mulo.zig
compiler_rt: optimize mulo
2022-02-05 01:35:46 -05:00
mulodi4_test.zig
compiler_rt: refactor __mulodi2 and __muloti2 to get __mulosi2
2021-12-14 14:16:24 -08:00
mulosi4_test.zig
compiler_rt: refactor __mulodi2 and __muloti2 to get __mulosi2
2021-12-14 14:16:24 -08:00
muloti4_test.zig
compiler_rt: refactor __mulodi2 and __muloti2 to get __mulosi2
2021-12-14 14:16:24 -08:00
multi3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
multi3.zig
lint: duplicate import (#10519)
2022-01-07 00:06:06 -05:00
mulXf3_test.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
mulXf3.zig
Sema: implement peer type resolution of signed and unsigned ints
2022-01-02 14:11:37 -07:00
negdi2_test.zig
compiler_rt: add __negsi2, __negdi2, __negti2
2021-12-14 14:14:31 -08:00
negsi2_test.zig
lint: duplicate import (#10519)
2022-01-07 00:06:06 -05:00
negti2_test.zig
compiler_rt: add __negsi2, __negdi2, __negti2
2021-12-14 14:14:31 -08:00
negv.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
negvdi2_test.zig
compiler_rt: add __negvsi2, __negvdi2, __negvti2
2021-12-27 14:35:45 -08:00
negvsi2_test.zig
compiler_rt: add __negvsi2, __negvdi2, __negvti2
2021-12-27 14:35:45 -08:00
negvti2_test.zig
compiler_rt: add __negvsi2, __negvdi2, __negvti2
2021-12-27 14:35:45 -08:00
negXf2.zig
remove redundant license headers from zig standard library
2021-08-24 12:25:09 -07:00
negXi2.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
os_version_check.zig
stage2: avoid inferred struct in os_version_check.zig
2022-01-26 00:48:05 -05:00
parity.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
paritydi2_test.zig
lint: duplicate import (#10519)
2022-01-07 00:06:06 -05:00
paritysi2_test.zig
lint: duplicate import (#10519)
2022-01-07 00:06:06 -05:00
parityti2_test.zig
lint: duplicate import (#10519)
2022-01-07 00:06:06 -05:00
popcount.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
popcountdi2_test.zig
lint: duplicate import (#10519)
2022-01-07 00:06:06 -05:00
popcountsi2_test.zig
lint: duplicate import (#10519)
2022-01-07 00:06:06 -05:00
popcountti2_test.zig
lint: duplicate import (#10519)
2022-01-07 00:06:06 -05:00
README.md
mv std/ lib/
2019-09-25 23:35:41 -04:00
shift.zig
compiler-rt: simplify implementations
2022-01-02 13:16:17 -07:00
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
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truncXfYf2_test.zig
lint: duplicate import (#10519)
2022-01-07 00:06:06 -05:00
truncXfYf2.zig
compiler_rt: move more functions to the stage2 section
2021-12-29 00:39:25 -07:00
ucmpdi2_test.zig
compiler_rt: add __cmpXi2 and __ucmpXi2
2021-12-14 14:21:30 -08:00
ucmpsi2_test.zig
compiler_rt: add __cmpXi2 and __ucmpXi2
2021-12-14 14:21:30 -08:00
ucmpti2_test.zig
compiler_rt: add __cmpXi2 and __ucmpXi2
2021-12-14 14:21:30 -08:00
udivmod.zig
lint: duplicate import (#10519)
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udivmoddi4_test.zig
remove redundant license headers from zig standard library
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udivmodti4_test.zig
remove redundant license headers from zig standard library
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udivmodti4.zig
std, compiler-rt: remove test names where applicable
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udivti3.zig
remove redundant license headers from zig standard library
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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.