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zig/lib/std/special/compiler_rt
History
Andrew Kelley b6bb0ee1ac Merge remote-tracking branch 'origin/master' into stage2-whole-file-astgen 
Conflicts:
 * lib/std/os/linux/tls.zig
 * test/behavior/align.zig
 * test/behavior/atomics.zig
 * test/behavior/vector.zig
2021-05-08 10:53:22 -07:00
..
addXf3_test.zig
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addXf3.zig
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arm.zig
zig fmt the std lib
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ashldi3_test.zig
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ashlti3_test.zig
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ashrdi3_test.zig
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ashrti3_test.zig
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atomics.zig
std: change @import("builtin") to std.builtin
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aulldiv.zig
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aullrem.zig
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clear_cache.zig
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clzsi2_test.zig
compiler-rt: Better selection of __clzsi implementation
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clzsi2.zig
compiler-rt: Better selection of __clzsi implementation
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comparedf2_test.zig
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comparesf2_test.zig
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compareXf2.zig
std: fix compile errors caught by stage2 AstGen
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divdf3_test.zig
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divdf3.zig
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divsf3_test.zig
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divsf3.zig
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divtf3_test.zig
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divtf3.zig
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divti3_test.zig
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divti3.zig
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emutls.zig
implement emutls in compiler_rt
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extendXfYf2_test.zig
compiler-rt: Don't pass f16 around as arguments
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extendXfYf2.zig
compiler-rt: Implement __extendhftf2
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fixdfdi_test.zig
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fixdfdi.zig
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fixdfsi_test.zig
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fixdfsi.zig
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fixdfti_test.zig
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fixdfti.zig
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fixint_test.zig
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fixint.zig
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fixsfdi_test.zig
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fixsfdi.zig
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fixsfsi_test.zig
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fixsfsi.zig
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fixsfti_test.zig
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fixsfti.zig
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fixtfdi_test.zig
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fixtfdi.zig
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fixtfsi_test.zig
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fixtfsi.zig
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fixtfti_test.zig
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fixtfti.zig
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fixuint.zig
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fixunsdfdi_test.zig
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fixunsdfdi.zig
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fixunsdfsi_test.zig
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fixunsdfsi.zig
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fixunsdfti_test.zig
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fixunsdfti.zig
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fixunssfdi_test.zig
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fixunssfdi.zig
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fixunssfsi_test.zig
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fixunssfsi.zig
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fixunssfti_test.zig
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fixunssfti.zig
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fixunstfdi_test.zig
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fixunstfdi.zig
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fixunstfsi_test.zig
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fixunstfsi.zig
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fixunstfti_test.zig
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fixunstfti.zig
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floatdidf_test.zig
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floatdidf.zig
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floatdisf_test.zig
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floatditf_test.zig
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floatditf.zig
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floatsiXf.zig
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floattidf_test.zig
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floattidf.zig
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floattisf_test.zig
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floattitf_test.zig
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floattitf.zig
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floatundidf_test.zig
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floatundidf.zig
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floatundisf.zig
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floatunditf_test.zig
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floatunditf.zig
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floatunsidf.zig
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floatunsisf.zig
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floatunsitf_test.zig
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floatunsitf.zig
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floatuntidf_test.zig
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floatuntidf.zig
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floatuntisf_test.zig
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floatuntisf.zig
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floatuntitf_test.zig
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floatuntitf.zig
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floatXisf.zig
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int.zig
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lshrdi3_test.zig
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lshrti3_test.zig
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modti3_test.zig
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modti3.zig
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muldi3_test.zig
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muldi3.zig
std: change @import("builtin") to std.builtin
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mulodi4_test.zig
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mulodi4.zig
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muloti4_test.zig
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muloti4.zig
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multi3_test.zig
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multi3.zig
std: change @import("builtin") to std.builtin
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mulXf3_test.zig
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mulXf3.zig
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negXf2.zig
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popcountdi2_test.zig
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popcountdi2.zig
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README.md
mv std/ lib/
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shift.zig
std: change @import("builtin") to std.builtin
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sparc.zig
std: fix compile errors caught by stage2 AstGen
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stack_probe.zig
std: change @import("builtin") to std.builtin
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truncXfYf2_test.zig
compiler-rt: Implement __trunctfhf2
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truncXfYf2.zig
compiler-rt: Implement __trunctfhf2
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udivmod.zig
std: change @import("builtin") to std.builtin
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udivmoddi4_test.zig
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udivmodti4_test.zig
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udivmodti4.zig
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udivti3.zig
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umodti3.zig
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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.