zig/std/special/compiler_rt
Andrew Kelley b57cb04afc Merge remote-tracking branch 'origin/master' into llvm6 2018-03-08 10:59:24 -05:00
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README.md add compiler-rt fns: udivmodti4, udivti3, umodti3 2017-08-18 16:26:09 -04:00
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fixunstfsi_test.zig syntax: functions require return type. remove `->` 2018-01-25 04:10:11 -05:00
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fixunstfti_test.zig syntax: functions require return type. remove `->` 2018-01-25 04:10:11 -05:00
index.zig Merge remote-tracking branch 'origin/master' into llvm6 2018-01-25 11:51:41 -05:00
udivmod.zig ptrCast builtin now gives an error for removing const qualifier 2018-03-06 16:37:03 -05:00
udivmoddi4.zig syntax: functions require return type. remove `->` 2018-01-25 04:10:11 -05:00
udivmoddi4_test.zig syntax: functions require return type. remove `->` 2018-01-25 04:10:11 -05:00
udivmodti4.zig syntax: functions require return type. remove `->` 2018-01-25 04:10:11 -05:00
udivmodti4_test.zig syntax: functions require return type. remove `->` 2018-01-25 04:10:11 -05:00
udivti3.zig syntax: functions require return type. remove `->` 2018-01-25 04:10:11 -05:00
umodti3.zig syntax: functions require return type. remove `->` 2018-01-25 04:10:11 -05:00

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.