From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/mir-opt/uninhabited_enum_branching.rs | 30 +++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 tests/mir-opt/uninhabited_enum_branching.rs (limited to 'tests/mir-opt/uninhabited_enum_branching.rs') diff --git a/tests/mir-opt/uninhabited_enum_branching.rs b/tests/mir-opt/uninhabited_enum_branching.rs new file mode 100644 index 000000000..0ef604c30 --- /dev/null +++ b/tests/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", + }; +} -- cgit v1.2.3