51d692cf77
Adds a new mir_dump output file in HTML/CSS to visualize code regions and the MIR features that they came from (including overlapping spans). See example below: Includes a basic, MIR-block-based implementation of coverage injection, available via `-Zexperimental-coverage`. This implementation has known flaws and omissions, but is simple enough to validate the new tools and tests. The existing `-Zinstrument-coverage` option currently enables function-level coverage only, which at least appears to generate accurate coverage reports at that level. Experimental coverage is not accurate at this time. When branch coverage works as intended, the `-Zexperimental-coverage` option should be removed. This PR replaces the bulk of PR #75828, with the remaining parts of that PR distributed among other separate and indentpent PRs. This PR depends on three of those other PRs: #76000, #76002, and Rust compiler MCP rust-lang/compiler-team#278 Relevant issue: #34701 - Implement support for LLVMs code coverage instrumentation 
51 lines
968 B
Rust
51 lines
968 B
Rust
#![allow(unused_assignments)]
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fn main() {
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let mut countdown = 0;
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if true {
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countdown = 10;
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}
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if countdown > 7 {
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countdown -= 4;
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} else if countdown > 2 {
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if countdown < 1 || countdown > 5 || countdown != 9 {
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countdown = 0;
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}
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countdown -= 5;
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} else {
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return;
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}
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let mut countdown = 0;
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if true {
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countdown = 10;
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}
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if countdown > 7 {
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countdown -= 4;
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} else if countdown > 2 {
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if countdown < 1 || countdown > 5 || countdown != 9 {
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countdown = 0;
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}
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countdown -= 5;
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} else {
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return;
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}
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let mut countdown = 0;
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if true {
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countdown = 10;
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}
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if countdown > 7 {
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countdown -= 4;
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} else if countdown > 2 {
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if countdown < 1 || countdown > 5 || countdown != 9 {
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countdown = 0;
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}
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countdown -= 5;
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} else {
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return;
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}
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}
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