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Rollup merge of #79367 - Dirbaio:trap-unreachable, r=jonas-schievink

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Allow disabling TrapUnreachable via -Ztrap-unreachable=no

Currently this is only possible by defining a custom target, which is quite unwieldy.

This is useful for embedded targets where small code size is desired. For example, on my project (thumbv7em-none-eabi) this yields a 0.6% code size reduction: 132892 bytes -> 132122 bytes (770 bytes down).
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Jonas Schievink 2020-11-24 13:17:49 +01:00 • committed by GitHub
commit 95e7af353f
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3 changed files with 5 additions and 1 deletions
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compiler/rustc_interface/src/tests.rs
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@ -592,6 +592,7 @@ fn test_debugging_options_tracking_hash() {
tracked!(thinlto, Some(true));
tracked!(tune_cpu, Some(String::from("abc")));
tracked!(tls_model, Some(TlsModel::GeneralDynamic));
tracked!(trap_unreachable, Some(false));
tracked!(treat_err_as_bug, Some(1));
tracked!(unleash_the_miri_inside_of_you, true);
tracked!(use_ctors_section, Some(true));