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[PM] Add pass run listeners to the pass manager.

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This commit provides the necessary C/C++ APIs and infastructure to enable fine-
grain progress report and safe suspension points after each pass in the pass
manager.

Clients can provide a callback function to the pass manager to call after each
pass. This can be used in a variety of ways (progress report, dumping of IR
between passes, safe suspension of threads, etc).

The run listener list is maintained in the LLVMContext, which allows a multi-
threaded client to be only informed for it's own thread. This of course assumes
that the client created a LLVMContext for each thread.

This fixes <rdar://problem/16728690>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207430 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Juergen Ributzka
2014-04-28 18:19:25 +00:00
parent c430d3ffcd
commit 4e0cc51d79
11 changed files with 207 additions and 8 deletions
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16
lib/IR/LLVMContextImpl.h
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@@ -40,6 +40,7 @@ class ConstantFP;
class LLVMContext;
class Type;
class Value;
struct PassRunListener;
struct DenseMapAPIntKeyInfo {
struct KeyTy {
@@ -368,13 +369,26 @@ public:
typedef DenseMap<const Function *, ReturnInst *> PrefixDataMapTy;
PrefixDataMapTy PrefixDataMap;
/// \brief List of listeners to notify about a pass run.
SmallVector<PassRunListener *, 4> RunListeners;
/// \brief Return true if the given pass name should emit optimization
/// remarks.
bool optimizationRemarksEnabledFor(const char *PassName) const;
int getOrAddScopeRecordIdxEntry(MDNode *N, int ExistingIdx);
int getOrAddScopeInlinedAtIdxEntry(MDNode *Scope, MDNode *IA,int ExistingIdx);
/// \brief Notify that we finished running a pass.
void notifyPassRun(LLVMContext *, Pass *, Module *, Function *, BasicBlock *);
/// \brief Register the given PassRunListener to receive notifyPassRun()
/// callbacks whenever a pass ran. The context will take ownership of the
/// listener and free it when the context is destroyed.
void addRunListener(PassRunListener *);
/// \brief Unregister a PassRunListener so that it no longer receives
/// notifyPassRun() callbacks. Remove and free the listener from the context.
void removeRunListener(PassRunListener *);
LLVMContextImpl(LLVMContext &C);
~LLVMContextImpl();
};