diff options
Diffstat (limited to 'tests/mir-opt/instcombine_duplicate_switch_targets.rs')
-rw-r--r-- | tests/mir-opt/instcombine_duplicate_switch_targets.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/mir-opt/instcombine_duplicate_switch_targets.rs b/tests/mir-opt/instcombine_duplicate_switch_targets.rs new file mode 100644 index 000000000..ef3b487af --- /dev/null +++ b/tests/mir-opt/instcombine_duplicate_switch_targets.rs @@ -0,0 +1,27 @@ +#![feature(custom_mir, core_intrinsics)] +#![crate_type = "lib"] + +use std::intrinsics::mir::*; + +// unit-test: InstCombine + +// EMIT_MIR instcombine_duplicate_switch_targets.assert_zero.InstCombine.diff +#[custom_mir(dialect = "runtime", phase = "post-cleanup")] +pub unsafe fn assert_zero(x: u8) -> u8 { + mir!( + { + match x { + 0 => retblock, + 1 => unreachable, + _ => unreachable, + } + } + unreachable = { + Unreachable() + } + retblock = { + RET = x; + Return() + } + ) +} |