The update to LLVM 10.x was done in #108 but the submodule branch was
not updated.
As discussed in #136, the branch line is now removed to avoid such
problems.
This change was mostly generated by changing the upstream llvm
branch to 9.x and running:
$ git submodule update --remote
As well as switching the llvm 9 this change also bring in the
following wasi-libc changes:
5933c20 fix macos filename, use https
7c39519 CI: upgrade to llvm 9.0.0
9ca5187 remove no-self-update workaround for windows azure
9580a25 deprecate azure pipelines CI, build libc on GH Actions
2c2fc9a Don't call `free` on paths which are about to call `_Exit`. (#161)
c6f2c05 gen-headers: Generate assertions of layout from witx (#149)
37c663f Correct minor typo in c_headers.rs (#166)
12f5832 Convert more wasi-libc code to `//`-style comments. (#153)
ec86d4d Improvements to wasi-headers tool (#160)
1fad338 Fix environment variable init to exit successfully. (#159)
a280fea Move math source files. (#151)
dd010be Avoid using cast expressions in WASI API constants. (#148)
Fixes: #101
The wasi-libc update here brings numerous bug fixes and minor changes,
and __wasilibc_rmfileat has been renamed to __wasilibc_unlinkat.
The only WebAssembly-relevant patch in the LLVM 8.0.1 update here is
4b1712f7, a fix for using /dev/null as the output file.