MergedLoadStoreMotion pass

[oota-llvm.git] / lib / IR / LLVMContextImpl.cpp

diff --git a/lib/IR/LLVMContextImpl.cpp b/lib/IR/LLVMContextImpl.cpp
index 506b0e3ac5abad6c7bc19a2c8ae1596260abeb32..4c2791f0a8d531aeb1bd36dd673df16eee5ecd39 100644 (file)
--- a/lib/IR/LLVMContextImpl.cpp
+++ b/lib/IR/LLVMContextImpl.cpp
@@ -14,9 +14,8 @@
 #include "LLVMContextImpl.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/IR/Attributes.h"
+#include "llvm/IR/DiagnosticInfo.h"
 #include "llvm/IR/Module.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Regex.h"
 #include <algorithm>
 using namespace llvm;
 
@@ -41,68 +40,16 @@ LLVMContextImpl::LLVMContextImpl(LLVMContext &C)
   InlineAsmDiagContext = nullptr;
   DiagnosticHandler = nullptr;
   DiagnosticContext = nullptr;
+  YieldCallback = nullptr;
+  YieldOpaqueHandle = nullptr;
   NamedStructTypesUniqueID = 0;
 }
 
-namespace {
-
-/// \brief Regular expression corresponding to the value given in the
-/// command line flag -pass-remarks. Passes whose name matches this
-/// regexp will emit a diagnostic when calling
-/// LLVMContext::emitOptimizationRemark.
-static Regex *OptimizationRemarkPattern = nullptr;
-
-/// \brief String to hold all the values passed via -pass-remarks. Every
-/// instance of -pass-remarks on the command line will be concatenated
-/// to this string. Values are stored inside braces and concatenated with
-/// the '|' operator. This implements the expected semantics that multiple
-/// -pass-remarks are additive.
-static std::string OptimizationRemarkExpr;
-
-struct PassRemarksOpt {
-  void operator=(const std::string &Val) const {
-    // Create a regexp object to match pass names for emitOptimizationRemark.
-    if (!Val.empty()) {
-      if (!OptimizationRemarkExpr.empty())
-        OptimizationRemarkExpr += "|";
-      OptimizationRemarkExpr += "(" + Val + ")";
-      delete OptimizationRemarkPattern;
-      OptimizationRemarkPattern = new Regex(OptimizationRemarkExpr);
-      std::string RegexError;
-      if (!OptimizationRemarkPattern->isValid(RegexError))
-        report_fatal_error("Invalid regular expression '" + Val +
-                               "' in -pass-remarks: " + RegexError,
-                           false);
-    }
-  };
-};
-
-static PassRemarksOpt PassRemarksOptLoc;
-
-// -pass-remarks
-//    Command line flag to enable LLVMContext::emitOptimizationRemark()
-//    and LLVMContext::emitOptimizationNote() calls.
-static cl::opt<PassRemarksOpt, true, cl::parser<std::string>>
-PassRemarks("pass-remarks", cl::value_desc("pattern"),
-            cl::desc("Enable optimization remarks from passes whose name match "
-                     "the given regular expression"),
-            cl::Hidden, cl::location(PassRemarksOptLoc), cl::ValueRequired,
-            cl::ZeroOrMore);
-}
-
-bool
-LLVMContextImpl::optimizationRemarksEnabledFor(const char *PassName) const {
-  return OptimizationRemarkPattern &&
-         OptimizationRemarkPattern->match(PassName);
-}
-
-
 namespace {
 struct DropReferences {
   // Takes the value_type of a ConstantUniqueMap's internal map, whose 'second'
   // is a Constant*.
-  template<typename PairT>
-  void operator()(const PairT &P) {
+  template <typename PairT> void operator()(const PairT &P) {
     P.second->dropAllReferences();
   }
 };
@@ -119,12 +66,11 @@ struct DropFirst {
 }
 
 LLVMContextImpl::~LLVMContextImpl() {
-  // NOTE: We need to delete the contents of OwnedModules, but we have to
-  // duplicate it into a temporary vector, because the destructor of Module
-  // will try to remove itself from OwnedModules set.  This would cause
-  // iterator invalidation if we iterated on the set directly.
-  std::vector<Module*> Modules(OwnedModules.begin(), OwnedModules.end());
-  DeleteContainerPointers(Modules);
+  // NOTE: We need to delete the contents of OwnedModules, but Module's dtor
+  // will call LLVMContextImpl::removeModule, thus invalidating iterators into
+  // the container. Avoid iterators during this operation:
+  while (!OwnedModules.empty())
+    delete *OwnedModules.begin();
   
   // Free the constants.  This is important to do here to ensure that they are
   // freed before the LeakDetector is torn down.