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Diffstat (limited to '')
-rw-r--r-- | tests/ui/mir/mir_codegen_ssa.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/mir/mir_codegen_ssa.rs b/tests/ui/mir/mir_codegen_ssa.rs new file mode 100644 index 000000000..5e2f10cef --- /dev/null +++ b/tests/ui/mir/mir_codegen_ssa.rs @@ -0,0 +1,19 @@ +// build-pass +// compile-flags: --crate-type=lib +#![feature(custom_mir, core_intrinsics)] +use std::intrinsics::mir::*; + +#[custom_mir(dialect = "runtime", phase = "optimized")] +pub fn f(a: u32) -> u32 { + mir!( + let x: u32; + { + // Previously code generation failed with ICE "use of .. before def ..." because the + // definition of x was incorrectly identified as dominating the use of x located in the + // same statement: + x = x + a; + RET = x; + Return() + } + ) +} |