================
@@ -82,6 +83,44 @@ class LLVM_ABI OptBisect : public OptPassGate {
int LastBisectNum = 0;
};
+/// This class implements a mechanism to disable passes and individual
+/// optimizations at compile time based on a command line option
+/// (-opt-disable) in order to study how single transformations, or
+/// combinations thereof, affect the IR.
+class LLVM_ABI OptDisable : public OptPassGate {
+public:
+ /// Default constructor. Initializes the state to empty set. The disabling
+ /// will be enabled by the cl::opt call-back when the command line option
+ /// is processed.
+ /// Clients should not instantiate this class directly. All access should go
+ /// through LLVMContext.
+ OptDisable() = default;
+
+ virtual ~OptDisable() = default;
+
+ /// Checks the pass name to determine if the specified pass should run.
+ ///
+ /// The method prints the name of the pass, and whether or not the pass
+ /// will be executed. It returns true if the pass should run, i.e. if
+ /// its name is was not provided via command line.
+ ///
+ /// Most passes should not call this routine directly. Instead, it is called
+ /// through helper routines provided by the base classes of the pass. For
+ /// instance, function passes should call FunctionPass::skipFunction().
+ bool shouldRunPass(const StringRef PassName,
+ StringRef IRDescription) override;
+
+ /// Parses the command line argument to extract the names of the passes
+ /// to be disabled. Multiple pass names can be provided with comma
separation.
+ void setDisabled(StringRef Passes);
----------------
mtrofin wrote:
I think that if you model the command line flag as `cl::list`, this part of the
API may be simpler, ptal.
https://github.com/llvm/llvm-project/pull/145059
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