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Docs: clarify unreachable for ReleaseSmall

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Techatrix 2022-09-28 12:30:55 +02:00 • committed by GitHub
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doc/langref.html.in
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@ -4903,13 +4903,12 @@ test "errdefer unwinding" {
{#header_close#}
{#header_open|unreachable#}
<p>
In {#syntax#}Debug{#endsyntax#} and {#syntax#}ReleaseSafe{#endsyntax#} mode, and when using <kbd>zig test</kbd>,
In {#link|Debug#} and {#link|ReleaseSafe#} mode
{#syntax#}unreachable{#endsyntax#} emits a call to {#syntax#}panic{#endsyntax#} with the message <code>reached unreachable code</code>.
</p>
<p>
In {#syntax#}ReleaseFast{#endsyntax#} mode, the optimizer uses the assumption that {#syntax#}unreachable{#endsyntax#} code
will never be hit to perform optimizations. However, <kbd>zig test</kbd> even in {#syntax#}ReleaseFast{#endsyntax#} mode
still emits {#syntax#}unreachable{#endsyntax#} as calls to {#syntax#}panic{#endsyntax#}.
In {#link|ReleaseFast#} and {#link|ReleaseSmall#} mode, the optimizer uses the assumption that {#syntax#}unreachable{#endsyntax#} code
will never be hit to perform optimizations.
</p>
{#header_open|Basics#}
{#code_begin|test|test_unreachable#}