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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/mir-opt/uninhabited_enum_branching.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/mir-opt/uninhabited_enum_branching.rs')
-rw-r--r-- | src/test/mir-opt/uninhabited_enum_branching.rs | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/test/mir-opt/uninhabited_enum_branching.rs b/src/test/mir-opt/uninhabited_enum_branching.rs new file mode 100644 index 000000000..0ef604c30 --- /dev/null +++ b/src/test/mir-opt/uninhabited_enum_branching.rs @@ -0,0 +1,30 @@ +enum Empty { } + +// test matching an enum with uninhabited variants +enum Test1 { + A(Empty), + B(Empty), + C +} + +// test an enum where the discriminants don't match the variant indexes +// (the optimization should do nothing here) +enum Test2 { + D = 4, + E = 5, +} + +// EMIT_MIR uninhabited_enum_branching.main.UninhabitedEnumBranching.diff +// EMIT_MIR uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir +fn main() { + match Test1::C { + Test1::A(_) => "A(Empty)", + Test1::B(_) => "B(Empty)", + Test1::C => "C", + }; + + match Test2::D { + Test2::D => "D", + Test2::E => "E", + }; +} |