Move EH-specific helper functions to a more appropriate place

No functionality change is intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254562 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Analysis/EHPersonalities.h

@@ -0,0 +1,83 @@
+//===- EHPersonalities.h - Compute EH-related information -----------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_LIBCALLSEMANTICS_H
+#define LLVM_ANALYSIS_LIBCALLSEMANTICS_H
+
+#include "llvm/Support/ErrorHandling.h"
+
+namespace llvm {
+class Function;
+class Value;
+
+enum class EHPersonality {
+  Unknown,
+  GNU_Ada,
+  GNU_C,
+  GNU_CXX,
+  GNU_ObjC,
+  MSVC_X86SEH,
+  MSVC_Win64SEH,
+  MSVC_CXX,
+  CoreCLR
+};
+
+/// \brief See if the given exception handling personality function is one
+/// that we understand.  If so, return a description of it; otherwise return
+/// Unknown.
+EHPersonality classifyEHPersonality(const Value *Pers);
+
+/// \brief Returns true if this personality function catches asynchronous
+/// exceptions.
+inline bool isAsynchronousEHPersonality(EHPersonality Pers) {
+  // The two SEH personality functions can catch asynch exceptions. We assume
+  // unknown personalities don't catch asynch exceptions.
+  switch (Pers) {
+  case EHPersonality::MSVC_X86SEH:
+  case EHPersonality::MSVC_Win64SEH:
+    return true;
+  default:
+    return false;
+  }
+  llvm_unreachable("invalid enum");
+}
+
+/// \brief Returns true if this is a personality function that invokes
+/// handler funclets (which must return to it).
+inline bool isFuncletEHPersonality(EHPersonality Pers) {
+  switch (Pers) {
+  case EHPersonality::MSVC_CXX:
+  case EHPersonality::MSVC_X86SEH:
+  case EHPersonality::MSVC_Win64SEH:
+  case EHPersonality::CoreCLR:
+    return true;
+  default:
+    return false;
+  }
+  llvm_unreachable("invalid enum");
+}
+
+/// \brief Return true if this personality may be safely removed if there
+/// are no invoke instructions remaining in the current function.
+inline bool isNoOpWithoutInvoke(EHPersonality Pers) {
+  switch (Pers) {
+  case EHPersonality::Unknown:
+    return false;
+  // All known personalities currently have this behavior
+  default:
+    return true;
+  }
+  llvm_unreachable("invalid enum");
+}
+
+bool canSimplifyInvokeNoUnwind(const Function *F);
+
+} // end namespace llvm
+
+#endif

include/llvm/Analysis/LibCallSemantics.h

@@ -1,84 +0,0 @@
-//===- LibCallSemantics.h - Describe library semantics --------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines interfaces that can be used to describe language specific
-// runtime library interfaces (e.g. libc, libm, etc) to LLVM optimizers.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_ANALYSIS_LIBCALLSEMANTICS_H
-#define LLVM_ANALYSIS_LIBCALLSEMANTICS_H
-
-#include "llvm/Analysis/AliasAnalysis.h"
-
-namespace llvm {
-class InvokeInst;
-
-  enum class EHPersonality {
-    Unknown,
-    GNU_Ada,
-    GNU_C,
-    GNU_CXX,
-    GNU_ObjC,
-    MSVC_X86SEH,
-    MSVC_Win64SEH,
-    MSVC_CXX,
-    CoreCLR
-  };
-
-  /// \brief See if the given exception handling personality function is one
-  /// that we understand.  If so, return a description of it; otherwise return
-  /// Unknown.
-  EHPersonality classifyEHPersonality(const Value *Pers);
-
-  /// \brief Returns true if this personality function catches asynchronous
-  /// exceptions.
-  inline bool isAsynchronousEHPersonality(EHPersonality Pers) {
-    // The two SEH personality functions can catch asynch exceptions. We assume
-    // unknown personalities don't catch asynch exceptions.
-    switch (Pers) {
-    case EHPersonality::MSVC_X86SEH:
-    case EHPersonality::MSVC_Win64SEH:
-      return true;
-    default: return false;
-    }
-    llvm_unreachable("invalid enum");
-  }
-
-  /// \brief Returns true if this is a personality function that invokes
-  /// handler funclets (which must return to it).
-  inline bool isFuncletEHPersonality(EHPersonality Pers) {
-    switch (Pers) {
-    case EHPersonality::MSVC_CXX:
-    case EHPersonality::MSVC_X86SEH:
-    case EHPersonality::MSVC_Win64SEH:
-    case EHPersonality::CoreCLR:
-      return true;
-    default: return false;
-    }
-    llvm_unreachable("invalid enum");
-  }
-
-  /// \brief Return true if this personality may be safely removed if there
-  /// are no invoke instructions remaining in the current function.
-  inline bool isNoOpWithoutInvoke(EHPersonality Pers) {
-    switch (Pers) {
-    case EHPersonality::Unknown:
-      return false;
-    // All known personalities currently have this behavior
-    default: return true;
-    }
-    llvm_unreachable("invalid enum");
-  }
-
-  bool canSimplifyInvokeNoUnwind(const Function *F);
-
-} // end namespace llvm
-
-#endif

include/llvm/CodeGen/MachineModuleInfo.h

@@ -35,7 +35,7 @@
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/IR/DebugLoc.h"
 #include "llvm/IR/Metadata.h"
 #include "llvm/IR/ValueHandle.h"

include/llvm/CodeGen/WinEHFuncInfo.h

@@ -22,6 +22,7 @@
 namespace llvm {
 class AllocaInst;
 class BasicBlock;
+class CatchReturnInst;
 class Constant;
 class Function;
 class GlobalVariable;

lib/Analysis/CMakeLists.txt

@@ -25,6 +25,7 @@ add_llvm_library(LLVMAnalysis
   DivergenceAnalysis.cpp
   DomPrinter.cpp
   DominanceFrontier.cpp
+  EHPersonalities.cpp
   GlobalsModRef.cpp
   IVUsers.cpp
   InlineCost.cpp
@@ -35,7 +36,6 @@ add_llvm_library(LLVMAnalysis
   IteratedDominanceFrontier.cpp
   LazyCallGraph.cpp
   LazyValueInfo.cpp
-  LibCallSemantics.cpp
   Lint.cpp
   Loads.cpp
   LoopAccessAnalysis.cpp

lib/Analysis/LibCallSemantics.cpp

@@ -1,47 +0,0 @@
-//===- LibCallSemantics.cpp - Describe library semantics ------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements interfaces that can be used to describe language
-// specific runtime library interfaces (e.g. libc, libm, etc) to LLVM
-// optimizers.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/LibCallSemantics.h"
-#include "llvm/ADT/StringSwitch.h"
-#include "llvm/IR/Function.h"
-using namespace llvm;
-
-/// See if the given exception handling personality function is one that we
-/// understand.  If so, return a description of it; otherwise return Unknown.
-EHPersonality llvm::classifyEHPersonality(const Value *Pers) {
-  const Function *F =
-      Pers ? dyn_cast<Function>(Pers->stripPointerCasts()) : nullptr;
-  if (!F)
-    return EHPersonality::Unknown;
-  return StringSwitch<EHPersonality>(F->getName())
-    .Case("__gnat_eh_personality", EHPersonality::GNU_Ada)
-    .Case("__gxx_personality_v0",  EHPersonality::GNU_CXX)
-    .Case("__gcc_personality_v0",  EHPersonality::GNU_C)
-    .Case("__objc_personality_v0", EHPersonality::GNU_ObjC)
-    .Case("_except_handler3",      EHPersonality::MSVC_X86SEH)
-    .Case("_except_handler4",      EHPersonality::MSVC_X86SEH)
-    .Case("__C_specific_handler",  EHPersonality::MSVC_Win64SEH)
-    .Case("__CxxFrameHandler3",    EHPersonality::MSVC_CXX)
-    .Case("ProcessCLRException",   EHPersonality::CoreCLR)
-    .Default(EHPersonality::Unknown);
-}
-
-bool llvm::canSimplifyInvokeNoUnwind(const Function *F) {
-  EHPersonality Personality = classifyEHPersonality(F->getPersonalityFn());
-  // We can't simplify any invokes to nounwind functions if the personality
-  // function wants to catch asynch exceptions.  The nounwind attribute only
-  // implies that the function does not throw synchronous exceptions.
-  return !isAsynchronousEHPersonality(Personality);
-}

lib/CodeGen/DwarfEHPrepare.cpp

@@ -16,7 +16,7 @@
 #include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/CFG.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Function.h"

lib/CodeGen/MachineFunction.cpp

@@ -17,7 +17,7 @@
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/Analysis/ConstantFolding.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/CodeGen/MachineConstantPool.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineFunctionInitializer.h"

lib/CodeGen/MachineModuleInfo.cpp

@@ -10,7 +10,7 @@
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/ADT/PointerUnion.h"
 #include "llvm/ADT/TinyPtrVector.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"

lib/CodeGen/MachineVerifier.cpp

@@ -28,7 +28,7 @@
 #include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/SetOperations.h"
 #include "llvm/ADT/SmallVector.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/CodeGen/LiveIntervalAnalysis.h"
 #include "llvm/CodeGen/LiveStackAnalysis.h"
 #include "llvm/CodeGen/LiveVariables.h"

lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

@@ -19,7 +19,7 @@
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/BranchProbabilityInfo.h"
 #include "llvm/Analysis/CFG.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/CodeGen/Analysis.h"
 #include "llvm/CodeGen/FastISel.h"

lib/CodeGen/WinEHPrepare.cpp

@@ -19,7 +19,7 @@
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/Analysis/CFG.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/CodeGen/WinEHFuncInfo.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Debug.h"

lib/Target/X86/X86ExpandPseudo.cpp

@@ -19,7 +19,7 @@
 #include "X86InstrInfo.h"
 #include "X86MachineFunctionInfo.h"
 #include "X86Subtarget.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/CodeGen/Passes.h" // For IDs of passes that are preserved.
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/CodeGen/MachineInstrBuilder.h"

lib/Target/X86/X86FrameLowering.cpp

@@ -18,7 +18,7 @@
 #include "X86Subtarget.h"
 #include "X86TargetMachine.h"
 #include "llvm/ADT/SmallSet.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineInstrBuilder.h"

lib/Target/X86/X86ISelLowering.cpp

@@ -25,7 +25,7 @@
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringSwitch.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/CodeGen/IntrinsicLowering.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"

lib/Target/X86/X86WinEHState.cpp

@@ -15,7 +15,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "X86.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/WinEHFuncInfo.h"

lib/Transforms/IPO/PruneEH.cpp

@@ -21,7 +21,7 @@
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Analysis/CallGraph.h"
 #include "llvm/Analysis/CallGraphSCCPass.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/IR/CFG.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/Function.h"

lib/Transforms/InstCombine/InstructionCombining.cpp

@@ -42,9 +42,9 @@
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/CFG.h"
 #include "llvm/Analysis/ConstantFolding.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/InstructionSimplify.h"
-#include "llvm/Analysis/LibCallSemantics.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/MemoryBuiltins.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"

lib/Transforms/Instrumentation/SanitizerCoverage.cpp

@@ -31,7 +31,7 @@
 #include "llvm/Transforms/Instrumentation.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/SmallVector.h"
-#include "llvm/Analysis/LibCallSemantics.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/IR/CallSite.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DebugInfo.h"

lib/Transforms/Utils/Local.cpp

@@ -20,8 +20,8 @@
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/Statistic.h"
+#include "llvm/Analysis/EHPersonalities.h"
 #include "llvm/Analysis/InstructionSimplify.h"
-#include "llvm/Analysis/LibCallSemantics.h"
 #include "llvm/Analysis/MemoryBuiltins.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/CFG.h"