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yield on x86 'pause' hint

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This commit is contained in:
Ralf Jung 2020-05-03 12:24:57 +02:00
parent ff1f0b06cc
commit 994b13eaee
1 changed files with 3 additions and 1 deletions
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4
src/shims/foreign_items.rs
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@ -434,7 +434,9 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
} }
// Architecture-specific shims // Architecture-specific shims
"llvm.x86.sse2.pause" if this.tcx.sess.target.target.arch == "x86" || this.tcx.sess.target.target.arch == "x86_64" => {} "llvm.x86.sse2.pause" if this.tcx.sess.target.target.arch == "x86" || this.tcx.sess.target.target.arch == "x86_64" => {
this.sched_yield()?;
}
// Platform-specific shims // Platform-specific shims
_ => match this.tcx.sess.target.target.target_os.as_str() { _ => match this.tcx.sess.target.target.target_os.as_str() {