diff options
Diffstat (limited to 'tests/codegen-llvm/issues/issue-108395-branchy-bool-match.rs')
| -rw-r--r-- | tests/codegen-llvm/issues/issue-108395-branchy-bool-match.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/codegen-llvm/issues/issue-108395-branchy-bool-match.rs b/tests/codegen-llvm/issues/issue-108395-branchy-bool-match.rs new file mode 100644 index 00000000000..96387e791b0 --- /dev/null +++ b/tests/codegen-llvm/issues/issue-108395-branchy-bool-match.rs @@ -0,0 +1,27 @@ +//@ compile-flags: -Copt-level=3 -Zmerge-functions=disabled +//! Test for <https://github.com/rust-lang/rust/issues/108395>. Check that +//! matching on two bools with wildcards does not produce branches. +#![crate_type = "lib"] + +// CHECK-LABEL: @wildcard( +#[no_mangle] +pub fn wildcard(a: u16, b: u16, v: u16) -> u16 { + // CHECK-NOT: br + match (a == v, b == v) { + (true, false) => 0, + (false, true) => u16::MAX, + _ => 1 << 15, // half + } +} + +// CHECK-LABEL: @exhaustive( +#[no_mangle] +pub fn exhaustive(a: u16, b: u16, v: u16) -> u16 { + // CHECK-NOT: br + match (a == v, b == v) { + (true, false) => 0, + (false, true) => u16::MAX, + (true, true) => 1 << 15, + (false, false) => 1 << 15, + } +} |
