[#llvm-CodeGenCoverage]
= xref:llvm.adoc[llvm]::CodeGenCoverage
:relfileprefix: ../
:mrdocs:

Tracks which TableGen CodeGen rules have been exercised at runtime.

== Synopsis

Declared in `<llvm/Support/CodeGenCoverage.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class CodeGenCoverage;
----

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:llvm/CodeGenCoverage/const_covered_iterator.adoc[`const_covered_iterator`] 
| Const iterator over the set bits of `RuleCoverage` (covered rule IDs).
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/CodeGenCoverage/2constructor.adoc[`CodeGenCoverage`]         [.small]#[constructor]#
| Construct empty coverage with no rules marked covered.
| xref:llvm/CodeGenCoverage/covered.adoc[`covered`] 
| Return a range over the IDs of all covered rules.
| xref:llvm/CodeGenCoverage/emit.adoc[`emit`] 
| Append this coverage to a file named `FilePrefix` plus the process ID.
| xref:llvm/CodeGenCoverage/isCovered.adoc[`isCovered`] 
| Return true if rule `RuleID` has been marked covered.
| xref:llvm/CodeGenCoverage/parse.adoc[`parse`] 
| Load coverage data for `BackendName` from `Buffer.`
| xref:llvm/CodeGenCoverage/reset.adoc[`reset`] 
| Clear all recorded coverage, leaving no rules marked covered.
| xref:llvm/CodeGenCoverage/setCovered.adoc[`setCovered`] 
| Mark rule `RuleID` as covered.
|===


== Protected Data Members

[cols="1,4"]
|===
| Name| Description
| xref:llvm/CodeGenCoverage/RuleCoverage.adoc[`RuleCoverage`] 
| Bit vector of covered rule IDs; bit `N` is set when rule `N` was hit.
|===



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