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Put checks that detect UB under their own flag below debug_assertions

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This commit is contained in:
Ben Kimock 2024-04-03 08:54:03 -04:00
parent 83d0a940c6
commit a7912cb421
42 changed files with 206 additions and 64 deletions
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8
compiler/rustc_middle/src/mir/mod.rs
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@ -777,8 +777,8 @@ impl<'tcx> Body<'tcx> {
// _1 = const _
// SwitchInt(_1)
//
// And MIR for if intrinsics::debug_assertions() looks like this:
// _1 = cfg!(debug_assertions)
// And MIR for if intrinsics::ub_checks() looks like this:
// _1 = UbChecks()
// SwitchInt(_1)
//
// So we're going to try to recognize this pattern.
@ -799,9 +799,7 @@ impl<'tcx> Body<'tcx> {
}
match rvalue {
Rvalue::NullaryOp(NullOp::UbChecks, _) => {
Some((tcx.sess.opts.debug_assertions as u128, targets))
}
Rvalue::NullaryOp(NullOp::UbChecks, _) => Some((tcx.sess.ub_checks() as u128, targets)),
Rvalue::Use(Operand::Constant(constant)) => {
let bits = eval_mono_const(constant);
Some((bits, targets))