rust/tests/codegen/debuginfo-constant-locals.rs

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2022-10-28 19:01:05 +00:00
//@ compile-flags: -g -O
// Check that simple constant values are preserved in debuginfo across both MIR opts and LLVM opts
#![crate_type = "lib"]
#[no_mangle]
pub fn check_it() {
let a = 1;
let b = 42;
foo(a + b);
}
#[inline(never)]
fn foo(x: i32) {
std::process::exit(x);
}
// CHECK-LABEL: @check_it
// CHECK: call void @llvm.dbg.value(metadata i32 1, metadata ![[a_metadata:[0-9]+]], metadata !DIExpression())
// CHECK: call void @llvm.dbg.value(metadata i32 42, metadata ![[b_metadata:[0-9]+]], metadata !DIExpression())
// CHECK: ![[a_metadata]] = !DILocalVariable(name: "a"
// CHECK-SAME: line: 9
// CHECK: ![[b_metadata]] = !DILocalVariable(name: "b"
// CHECK-SAME: line: 10