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add a Windows GNU AVX-512 build break workaround 

The break in question only repros under --release, and we didn't start
testing a release build of the prefer-intrinsics mode until just now.
This commit is contained in:
Jack O'Connor 2020-03-29 01:42:17 -04:00
parent 96c36d5df9
commit 5fad419a8d
1 changed files with 4 additions and 0 deletions
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4
build.rs
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@ -148,6 +148,10 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
avx512_build.flag("-mavx512f");
avx512_build.flag("-mavx512vl");
}
if is_windows_gnu() {
// Workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65782.
avx512_build.flag("-fno-asynchronous-unwind-tables");
}
avx512_build.compile("blake3_avx512");
} else {
// Currently no effect for non-x86 platforms.