1 //===- PassManager.cpp - Infrastructure for managing & running IR passes --===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "llvm/ADT/STLExtras.h"
11 #include "llvm/IR/LLVMContext.h"
12 #include "llvm/IR/PassManager.h"
13 
14 using namespace llvm;
15 
16 char FunctionAnalysisManagerModuleProxy::PassID;
17 
18 FunctionAnalysisManagerModuleProxy::Result
run(Module & M)19 FunctionAnalysisManagerModuleProxy::run(Module &M) {
20   assert(FAM->empty() && "Function analyses ran prior to the module proxy!");
21   return Result(*FAM);
22 }
23 
~Result()24 FunctionAnalysisManagerModuleProxy::Result::~Result() {
25   // Clear out the analysis manager if we're being destroyed -- it means we
26   // didn't even see an invalidate call when we got invalidated.
27   FAM->clear();
28 }
29 
invalidate(Module & M,const PreservedAnalyses & PA)30 bool FunctionAnalysisManagerModuleProxy::Result::invalidate(
31     Module &M, const PreservedAnalyses &PA) {
32   // If this proxy isn't marked as preserved, then we can't even invalidate
33   // individual function analyses, there may be an invalid set of Function
34   // objects in the cache making it impossible to incrementally preserve them.
35   // Just clear the entire manager.
36   if (!PA.preserved(ID()))
37     FAM->clear();
38 
39   // Return false to indicate that this result is still a valid proxy.
40   return false;
41 }
42 
43 char ModuleAnalysisManagerFunctionProxy::PassID;
44