flowistry_pdg::rustc::mir::coverage

Struct ExpressionId

Source 
pub struct ExpressionId {
    private_use_as_methods_instead: u32,
}
Expand description

ID of a coverage-counter expression. Values ascend from 0.

Before MIR inlining, expression IDs are local to their enclosing function. After MIR inlining, coverage statements may have been inlined into another function, so use the statement’s source-scope to find which function/instance its IDs are meaningful for.

Note that LLVM handles expression IDs as uint32_t, so there is no need to use a larger representation on the Rust side.

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§private_use_as_methods_instead: u32

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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