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Turn on the mem-unaligned feature for bpf targets

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Fixes the following LLVM segfault:

 Error: e: 05:02:06 [ERROR] fatal error: "Cannot select: 0x55e970a357d0: i64,ch = AtomicLoad<(load unordered (s64) from %ir.45)> 0x55e970410be8, 0x55e970a358a0\n  0x55e970a358a0: i64,ch = CopyFromReg 0x55e970410be8, Register:i64 %19\n    0x55e970a35490: i64 = Register %19\nIn function: memcpy"
          PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
          Stack dump:
          0.	Running pass 'Function Pass Manager' on module 'unroll-loop'.
          1.	Running pass 'BPF DAG->DAG Pattern Instruction Selection' on function '@memcpy'
This commit is contained in:
Alessandro Decina 2021-11-21 06:54:00 +00:00
parent 8e7401a151
commit d96a0a0877
1 changed files with 5 additions and 1 deletions
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6
library/compiler-builtins/build.rs
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@ -34,7 +34,11 @@ fn main() {
}
// These targets have hardware unaligned access support.
if target.contains("x86_64") || target.contains("i686") || target.contains("aarch64") {
if target.contains("x86_64")
|| target.contains("i686")
|| target.contains("aarch64")
|| target.contains("bpf")
{
println!("cargo:rustc-cfg=feature=\"mem-unaligned\"");
}