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Enable the SimplifyArmIdentity MIR optimization at mir-opt-level=1
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@ -367,11 +367,7 @@ fn optimization_applies<'tcx>(
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}
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}
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impl<'tcx> MirPass<'tcx> for SimplifyArmIdentity {
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impl<'tcx> MirPass<'tcx> for SimplifyArmIdentity {
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fn run_pass(&self, tcx: TyCtxt<'tcx>, source: MirSource<'tcx>, body: &mut Body<'tcx>) {
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fn run_pass(&self, _tcx: TyCtxt<'tcx>, source: MirSource<'tcx>, body: &mut Body<'tcx>) {
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if tcx.sess.opts.debugging_opts.mir_opt_level < 2 {
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return;
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}
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trace!("running SimplifyArmIdentity on {:?}", source);
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trace!("running SimplifyArmIdentity on {:?}", source);
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let local_uses = LocalUseCounter::get_local_uses(body);
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let local_uses = LocalUseCounter::get_local_uses(body);
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let (basic_blocks, local_decls, debug_info) =
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let (basic_blocks, local_decls, debug_info) =
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@ -18,7 +18,8 @@
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debug tail => _4; // in scope 1 at $DIR/simplify_try_if_let.rs:23:18: 23:26
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debug tail => _4; // in scope 1 at $DIR/simplify_try_if_let.rs:23:18: 23:26
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let _8: std::ptr::NonNull<Node>; // in scope 1 at $DIR/simplify_try_if_let.rs:26:29: 26:39
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let _8: std::ptr::NonNull<Node>; // in scope 1 at $DIR/simplify_try_if_let.rs:26:29: 26:39
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scope 2 {
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scope 2 {
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debug other_head => _8; // in scope 2 at $DIR/simplify_try_if_let.rs:26:29: 26:39
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- debug other_head => _8; // in scope 2 at $DIR/simplify_try_if_let.rs:26:29: 26:39
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+ debug other_head => ((_9 as Some).0: std::ptr::NonNull<Node>); // in scope 2 at $DIR/simplify_try_if_let.rs:26:29: 26:39
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scope 3 {
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scope 3 {
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}
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}
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}
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}
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@ -65,11 +66,12 @@
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StorageLive(_8); // scope 1 at $DIR/simplify_try_if_let.rs:26:29: 26:39
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StorageLive(_8); // scope 1 at $DIR/simplify_try_if_let.rs:26:29: 26:39
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_8 = ((_5 as Some).0: std::ptr::NonNull<Node>); // scope 1 at $DIR/simplify_try_if_let.rs:26:29: 26:39
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_8 = ((_5 as Some).0: std::ptr::NonNull<Node>); // scope 1 at $DIR/simplify_try_if_let.rs:26:29: 26:39
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StorageLive(_9); // scope 3 at $DIR/simplify_try_if_let.rs:28:46: 28:62
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StorageLive(_9); // scope 3 at $DIR/simplify_try_if_let.rs:28:46: 28:62
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StorageLive(_10); // scope 3 at $DIR/simplify_try_if_let.rs:28:51: 28:61
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- StorageLive(_10); // scope 3 at $DIR/simplify_try_if_let.rs:28:51: 28:61
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_10 = _8; // scope 3 at $DIR/simplify_try_if_let.rs:28:51: 28:61
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- _10 = _8; // scope 3 at $DIR/simplify_try_if_let.rs:28:51: 28:61
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((_9 as Some).0: std::ptr::NonNull<Node>) = move _10; // scope 3 at $DIR/simplify_try_if_let.rs:28:46: 28:62
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- ((_9 as Some).0: std::ptr::NonNull<Node>) = move _10; // scope 3 at $DIR/simplify_try_if_let.rs:28:46: 28:62
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discriminant(_9) = 1; // scope 3 at $DIR/simplify_try_if_let.rs:28:46: 28:62
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- discriminant(_9) = 1; // scope 3 at $DIR/simplify_try_if_let.rs:28:46: 28:62
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StorageDead(_10); // scope 3 at $DIR/simplify_try_if_let.rs:28:61: 28:62
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- StorageDead(_10); // scope 3 at $DIR/simplify_try_if_let.rs:28:61: 28:62
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+ _9 = move _5; // scope 3 at $DIR/simplify_try_if_let.rs:28:46: 28:62
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StorageLive(_11); // scope 3 at $DIR/simplify_try_if_let.rs:28:25: 28:38
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StorageLive(_11); // scope 3 at $DIR/simplify_try_if_let.rs:28:25: 28:38
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StorageLive(_12); // scope 3 at $DIR/simplify_try_if_let.rs:28:25: 28:29
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StorageLive(_12); // scope 3 at $DIR/simplify_try_if_let.rs:28:25: 28:29
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_12 = &mut _4; // scope 3 at $DIR/simplify_try_if_let.rs:28:25: 28:29
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_12 = &mut _4; // scope 3 at $DIR/simplify_try_if_let.rs:28:25: 28:29
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