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

Revert the current implementation and C API. New implementation and C APIs are
in the works.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208904 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm-c/Core.h

@@ -112,23 +112,12 @@ typedef struct LLVMOpaqueBuilder *LLVMBuilderRef;
  */
 typedef struct LLVMOpaqueModuleProvider *LLVMModuleProviderRef;
 
-/** @see llvm::Pass */
-typedef struct LLVMOpaquePass *LLVMPassRef;
-
 /** @see llvm::PassManagerBase */
 typedef struct LLVMOpaquePassManager *LLVMPassManagerRef;
 
 /** @see llvm::PassRegistry */
 typedef struct LLVMOpaquePassRegistry *LLVMPassRegistryRef;
 
-/** @see llvm::PassRunListener */
-typedef struct LLVMOpaquePassRunListener *LLVMPassRunListenerRef;
-
-/** @see llvm::LLVMPassRunListener */
-typedef void (*LLVMPassRunListenerHandlerTy)(LLVMContextRef, LLVMPassRef,
-                                             LLVMModuleRef, LLVMValueRef,
-                                             LLVMBasicBlockRef);
-
 /**
  * Used to get the users and usees of a Value.
  *
@@ -526,10 +515,6 @@ unsigned LLVMGetMDKindIDInContext(LLVMContextRef C, const char* Name,
                                   unsigned SLen);
 unsigned LLVMGetMDKindID(const char* Name, unsigned SLen);
 
-LLVMPassRunListenerRef LLVMAddPassRunListener(LLVMContextRef,
-                                              LLVMPassRunListenerHandlerTy);
-void LLVMRemovePassRunListener(LLVMContextRef, LLVMPassRunListenerRef);
-
 /**
  * @}
  */
@@ -2775,18 +2760,6 @@ const char *LLVMGetBufferStart(LLVMMemoryBufferRef MemBuf);
 size_t LLVMGetBufferSize(LLVMMemoryBufferRef MemBuf);
 void LLVMDisposeMemoryBuffer(LLVMMemoryBufferRef MemBuf);
 
-/**
- * @}
- */
-
-/**
- * @defgroup LLVMCCorePass Pass
- *
- * @{
- */
-
-const char *LLVMGetPassName(LLVMPassRef);
-
 /**
  * @}
  */