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Diffstat (limited to 'lib/std/special/compiler_rt/README.md')
| -rw-r--r-- | lib/std/special/compiler_rt/README.md | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/std/special/compiler_rt/README.md b/lib/std/special/compiler_rt/README.md new file mode 100644 index 0000000000..bc853f2958 --- /dev/null +++ b/lib/std/special/compiler_rt/README.md @@ -0,0 +1,15 @@ +This compiler-rt library is ported from [LLVM](http://compiler-rt.llvm.org/). + +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. |