From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/mir-opt/separate_const_switch.rs | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 tests/mir-opt/separate_const_switch.rs (limited to 'tests/mir-opt/separate_const_switch.rs') diff --git a/tests/mir-opt/separate_const_switch.rs b/tests/mir-opt/separate_const_switch.rs new file mode 100644 index 000000000..c809e5629 --- /dev/null +++ b/tests/mir-opt/separate_const_switch.rs @@ -0,0 +1,31 @@ +#![feature(control_flow_enum)] +#![feature(try_trait_v2)] + +use std::ops::ControlFlow; + +// EMIT_MIR separate_const_switch.too_complex.SeparateConstSwitch.diff +fn too_complex(x: Result) -> Option { + // The pass should break the outer match into + // two blocks that only have one parent each. + // Parents are one of the two branches of the first + // match, so a later pass can propagate constants. + match { + match x { + Ok(v) => ControlFlow::Continue(v), + Err(r) => ControlFlow::Break(r), + } + } { + ControlFlow::Continue(v) => Some(v), + ControlFlow::Break(r) => None, + } +} + +// EMIT_MIR separate_const_switch.identity.SeparateConstSwitch.diff +fn identity(x: Result) -> Result { + Ok(x?) +} + +fn main() { + too_complex(Ok(0)); + identity(Ok(0)); +} -- cgit v1.2.3