New EH representation for MSVC compatibility
authorDavid Majnemer <david.majnemer@gmail.com>
Fri, 10 Jul 2015 07:00:44 +0000 (07:00 +0000)
committerDavid Majnemer <david.majnemer@gmail.com>
Fri, 10 Jul 2015 07:00:44 +0000 (07:00 +0000)
Summary:
This introduces new instructions neccessary to implement MSVC-compatible
exception handling support.  Most of the middle-end and none of the
back-end haven't been audited or updated to take them into account.

Reviewers: rnk, JosephTremoulet, reames, nlewycky, rjmccall

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11041

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241888 91177308-0d34-0410-b5e6-96231b3b80d8

35 files changed:
docs/LangRef.rst
include/llvm-c/Core.h
include/llvm/Bitcode/LLVMBitCodes.h
include/llvm/IR/BasicBlock.h
include/llvm/IR/IRBuilder.h
include/llvm/IR/InstVisitor.h
include/llvm/IR/InstrTypes.h
include/llvm/IR/Instruction.def
include/llvm/IR/Instruction.h
include/llvm/IR/Instructions.h
lib/Analysis/IPA/InlineCost.cpp
lib/AsmParser/LLLexer.cpp
lib/AsmParser/LLParser.cpp
lib/AsmParser/LLParser.h
lib/AsmParser/LLToken.h
lib/Bitcode/Reader/BitcodeReader.cpp
lib/Bitcode/Writer/BitcodeWriter.cpp
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
lib/CodeGen/TargetLoweringBase.cpp
lib/IR/AsmWriter.cpp
lib/IR/BasicBlock.cpp
lib/IR/Instruction.cpp
lib/IR/Instructions.cpp
lib/IR/Verifier.cpp
lib/Transforms/Instrumentation/MemorySanitizer.cpp
lib/Transforms/Scalar/ADCE.cpp
lib/Transforms/Scalar/BDCE.cpp
lib/Transforms/Scalar/JumpThreading.cpp
lib/Transforms/Scalar/SCCP.cpp
lib/Transforms/Utils/BasicBlockUtils.cpp
lib/Transforms/Utils/Local.cpp
test/Feature/exception.ll
test/Verifier/invoke.ll
tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp

index ca5c16c..faa1d7c 100644 (file)
@@ -4727,7 +4727,11 @@ control flow, not values (the one exception being the
 The terminator instructions are: ':ref:`ret <i_ret>`',
 ':ref:`br <i_br>`', ':ref:`switch <i_switch>`',
 ':ref:`indirectbr <i_indirectbr>`', ':ref:`invoke <i_invoke>`',
-':ref:`resume <i_resume>`', and ':ref:`unreachable <i_unreachable>`'.
+':ref:`resume <i_resume>`', ':ref:`catchblock <i_catchblock>`',
+':ref:`catchendblock <i_catchendblock>`',
+':ref:`catchret <i_catchret>`',
+':ref:`terminateblock <i_terminateblock>`',
+and ':ref:`unreachable <i_unreachable>`'.
 
 .. _i_ret:
 
@@ -5081,6 +5085,289 @@ Example:
 
       resume { i8*, i32 } %exn
 
+.. _i_catchblock:
+
+'``catchblock``' Instruction
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+      <resultval> = catchblock <resultty> [<args>*]
+          to label <normal label> unwind label <exception label>
+
+Overview:
+"""""""""
+
+The '``catchblock``' instruction is used by `LLVM's exception handling
+system <ExceptionHandling.html#overview>`_ to specify that a basic block
+is a catch block --- one where a personality routine attempts to transfer
+control to catch an exception.
+The ``args`` correspond to whatever information the personality
+routine requires to know if this is an appropriate place to catch the
+exception.  Control is tranfered to the ``exception`` label if the
+``catchblock`` is not an appropriate handler for the in-flight exception.
+The ``normal`` label should contain the code found in the ``catch``
+portion of a ``try``/``catch`` sequence. It defines values supplied by
+the :ref:`personality function <personalityfn>` upon re-entry to the
+function. The ``resultval`` has the type ``resultty``.
+
+Arguments:
+""""""""""
+
+The instruction takes a list of arbitrary values which are interpreted
+by the :ref:`personality function <personalityfn>`.
+
+The ``catchblock`` must be provided a ``normal`` label to transfer control
+to if the ``catchblock`` matches the exception and an ``exception``
+label to transfer control to if it doesn't.
+
+Semantics:
+""""""""""
+
+The '``catchblock``' instruction defines the values which are set by the
+:ref:`personality function <personalityfn>` upon re-entry to the function, and
+therefore the "result type" of the ``catchblock`` instruction. As with
+calling conventions, how the personality function results are
+represented in LLVM IR is target specific.
+
+When the call stack is being unwound due to an exception being thrown,
+the exception is compared against the ``args``. If it doesn't match,
+then control is transfered to the ``exception`` basic block.
+
+The ``catchblock`` instruction has several restrictions:
+
+-  A catch block is a basic block which is the unwind destination of
+   an exceptional instruction.
+-  A catch block must have a '``catchblock``' instruction as its
+   first non-PHI instruction.
+-  There can be only one '``catchblock``' instruction within the
+   catch block.
+-  A basic block that is not a catch block may not include a
+   '``catchblock``' instruction.
+
+Example:
+""""""""
+
+.. code-block:: llvm
+
+      ;; A catch block which can catch an integer.
+      %res = catchblock { i8*, i32 } [i8** @_ZTIi]
+        to label %int.handler unwind label %terminate
+
+.. _i_catchendblock:
+
+'``catchendblock``' Instruction
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+      catchendblock unwind label <nextaction>
+      catchendblock unwind to caller
+
+Overview:
+"""""""""
+
+The '``catchendblock``' instruction is used by `LLVM's exception handling
+system <ExceptionHandling.html#overview>`_ to communicate to the
+:ref:`personality function <personalityfn>` which invokes are associated
+with a chain of :ref:`catchblock <i_catchblock>` instructions.
+
+The ``nextaction`` label indicates where control should transfer to if
+none of the ``catchblock`` instructions are suitable for catching the
+in-flight exception.
+
+If a ``nextaction`` label is not present, the instruction unwinds out of
+the function it is located in.  The
+:ref:`personality function <personalityfn>` will look for an appropriate
+catch block in the caller.
+
+Arguments:
+""""""""""
+
+The instruction optionally takes a label, ``nextaction``, indicating
+where control should transfer to if none of the constituent
+``catchblock`` instructions are suitable for the in-flight exception.
+
+Semantics:
+""""""""""
+
+When the call stack is being unwound due to an exception being thrown
+and none of the constituent ``catchblock`` instructions match, then
+control is transfered to ``nextaction`` if it is present.  If it is not
+present, control is transfered to the caller.
+
+The ``catchendblock`` instruction has several restrictions:
+
+-  A catch-end block is a basic block which is the unwind destination of
+   an exceptional instruction.
+-  A catch-end block must have a '``catchendblock``' instruction as its
+   first non-PHI instruction.
+-  There can be only one '``catchendblock``' instruction within the
+   catch block.
+-  A basic block that is not a catch-end block may not include a
+   '``catchendblock``' instruction.
+
+Example:
+""""""""
+
+.. code-block:: llvm
+
+      catchendblock unwind label %terminate
+      catchendblock unwind to caller
+
+.. _i_catchret:
+
+'``catchret``' Instruction
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+      catchret label <normal>
+
+Overview:
+"""""""""
+
+The '``catchret``' instruction is a terminator instruction that has a
+single successor.
+
+
+Arguments:
+""""""""""
+
+The '``catchret``' instruction requires one argument which specifies
+where control will transfer to next.
+
+Semantics:
+""""""""""
+
+The '``catchret``' instruction ends the existing (in-flight) exception
+whose unwinding was interrupted with a
+:ref:`catchblock <i_catchblock>` instruction and transfer control to
+``normal``.
+
+Example:
+""""""""
+
+.. code-block:: llvm
+
+      catchret unwind label %continue
+
+.. _i_cleanupret:
+
+'``cleanupret``' Instruction
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+      cleanupret <type> <value> unwind label <continue>
+      cleanupret <type> <value> unwind to caller
+
+Overview:
+"""""""""
+
+The '``cleanupret``' instruction is a terminator instruction that has
+an optional successor.
+
+
+Arguments:
+""""""""""
+
+The '``cleanupret``' instruction requires one argument, which must have the
+same type as the result of any '``cleanupblock``' instruction in the same
+function.  It also has an optional successor,  ``continue``.
+
+Semantics:
+""""""""""
+
+The '``cleanupret``' instruction indicates to the
+:ref:`personality function <personalityfn>` that the
+:ref:`cleanupblock <i_cleanupblock>` it transfered control to has ended.
+It transfers control to ``continue`` or unwinds out of the function.
+
+Example:
+""""""""
+
+.. code-block:: llvm
+
+      cleanupret { i8*, i32 } %exn unwind label %continue
+
+.. _i_terminateblock:
+
+'``terminateblock``' Instruction
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+      terminateblock [<args>*] unwind label <exception label>
+
+Overview:
+"""""""""
+
+The '``terminateblock``' instruction is used by `LLVM's exception handling
+system <ExceptionHandling.html#overview>`_ to specify that a basic block
+is a terminate block --- one where a personality routine attempts to transfer
+control to terminate the program.
+The ``args`` correspond to whatever information the personality
+routine requires to know if this is an appropriate place to terminate the
+program.  Control is tranfered to the ``exception`` label if the
+``terminateblock`` is an appropriate handler for the in-flight exception.
+If the ``terminateblock`` is not an appropriate handler, execution of
+the program is terminated via
+:ref:`personality function <personalityfn>` specific means.
+
+Arguments:
+""""""""""
+
+The instruction takes a list of arbitrary values which are interpreted
+by the :ref:`personality function <personalityfn>`.
+
+The ``terminateblock`` must be provided an ``exception`` label to
+transfer control to if the in-flight exception matches the ``args``.
+
+Semantics:
+""""""""""
+
+When the call stack is being unwound due to an exception being thrown,
+the exception is compared against the ``args``. If it matches,
+then control is transfered to the ``exception`` basic block.  Otherwise,
+the program is terminated via personality-specific means.  Typically,
+the first argument to ``terminateblock`` specifies what function the
+personality should defer to in order to terminate the program.
+
+The ``terminateblock`` instruction has several restrictions:
+
+-  A terminate block is a basic block which is the unwind destination of
+   an exceptional instruction.
+-  A terminate block must have a '``terminateblock``' instruction as its
+   first non-PHI instruction.
+-  There can be only one '``terminateblock``' instruction within the
+   terminate block.
+-  A basic block that is not a terminate block may not include a
+   '``terminateblock``' instruction.
+
+Example:
+""""""""
+
+.. code-block:: llvm
+
+      ;; A terminate block which only permits integers.
+      terminateblock [i8** @_ZTIi] unwind label %continue
+
 .. _i_unreachable:
 
 '``unreachable``' Instruction
@@ -8029,6 +8316,68 @@ Example:
                catch i8** @_ZTIi
                filter [1 x i8**] [@_ZTId]
 
+.. _i_cleanupblock:
+
+'``cleanupblock``' Instruction
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+      <resultval> = cleanupblock <resultty> [<args>*]
+
+Overview:
+"""""""""
+
+The '``cleanupblock``' instruction is used by `LLVM's exception handling
+system <ExceptionHandling.html#overview>`_ to specify that a basic block
+is a cleanup block --- one where a personality routine attempts to
+transfer control to run cleanup actions.
+The ``args`` correspond to whatever additional
+information the :ref:`personality function <personalityfn>` requires to
+execute the cleanup.
+:ref:`personality function <personalityfn>` upon re-entry to the
+function. The ``resultval`` has the type ``resultty``.
+
+Arguments:
+""""""""""
+
+The instruction takes a list of arbitrary values which are interpreted
+by the :ref:`personality function <personalityfn>`.
+
+Semantics:
+""""""""""
+
+The '``cleanupblock``' instruction defines the values which are set by the
+:ref:`personality function <personalityfn>` upon re-entry to the function, and
+therefore the "result type" of the ``cleanupblock`` instruction. As with
+calling conventions, how the personality function results are
+represented in LLVM IR is target specific.
+
+When the call stack is being unwound due to an exception being thrown,
+the :ref:`personality function <personalityfn>` transfers control to the
+``cleanupblock`` with the aid of the personality-specific arguments.
+
+The ``cleanupblock`` instruction has several restrictions:
+
+-  A cleanup block is a basic block which is the unwind destination of
+   an exceptional instruction.
+-  A cleanup block must have a '``cleanupblock``' instruction as its
+   first non-PHI instruction.
+-  There can be only one '``cleanupblock``' instruction within the
+   cleanup block.
+-  A basic block that is not a cleanup block may not include a
+   '``cleanupblock``' instruction.
+
+Example:
+""""""""
+
+.. code-block:: llvm
+
+      %res = cleanupblock { i8*, i32 } [label %nextaction]
+
 .. _intrinsics:
 
 Intrinsic Functions
index 713894f..48ae289 100644 (file)
@@ -248,7 +248,13 @@ typedef enum {
 
   /* Exception Handling Operators */
   LLVMResume         = 58,
-  LLVMLandingPad     = 59
+  LLVMLandingPad     = 59,
+  LLVMCleanupRet     = 61,
+  LLVMCatchRet       = 62,
+  LLVMCatchBlock     = 63,
+  LLVMTerminateBlock = 64,
+  LLVMCleanupBlock   = 65,
+  LLVMCatchEndBlock  = 66
 
 } LLVMOpcode;
 
@@ -1203,6 +1209,7 @@ LLVMTypeRef LLVMX86MMXType(void);
       macro(InsertElementInst)              \
       macro(InsertValueInst)                \
       macro(LandingPadInst)                 \
+      macro(CleanupBlockInst)               \
       macro(PHINode)                        \
       macro(SelectInst)                     \
       macro(ShuffleVectorInst)              \
@@ -1215,6 +1222,11 @@ LLVMTypeRef LLVMX86MMXType(void);
         macro(SwitchInst)                   \
         macro(UnreachableInst)              \
         macro(ResumeInst)                   \
+        macro(CleanupReturnInst)            \
+        macro(CatchReturnInst)              \
+        macro(CatchBlockInst)               \
+        macro(TerminateBlockInst)           \
+        macro(CatchEndBlockInst)            \
       macro(UnaryInstruction)               \
         macro(AllocaInst)                   \
         macro(CastInst)                     \
index 605c417..2845275 100644 (file)
@@ -354,6 +354,12 @@ namespace bitc {
     FUNC_CODE_INST_CMPXCHG     = 46, // CMPXCHG: [ptrty,ptr,valty,cmp,new, align,
                                      //           vol,ordering,synchscope]
     FUNC_CODE_INST_LANDINGPAD  = 47, // LANDINGPAD: [ty,val,num,id0,val0...]
+    FUNC_CODE_INST_CLEANUPRET  = 48, // CLEANUPRET: [] or [val] or [bb#] or [val,bb#]
+    FUNC_CODE_INST_CATCHRET    = 49, // CATCHRET: [bb#]
+    FUNC_CODE_INST_CATCHBLOCK  = 50, // CATCHBLOCK: [ty,val,val,num,args...]
+    FUNC_CODE_INST_TERMINATEBLOCK = 51, // TERMINATEBLOCK: [bb#,num,args...]
+    FUNC_CODE_INST_CLEANUPBLOCK = 52, // CLEANUPBLOCK: [num,args...]
+    FUNC_CODE_INST_CATCHENDBLOCK = 53, // CATCHENDBLOCK: [] or [bb#]
   };
 
   enum UseListCodes {
index 66581bf..5189d8f 100644 (file)
@@ -309,6 +309,9 @@ public:
   /// basic block \p New instead of to it.
   void replaceSuccessorsPhiUsesWith(BasicBlock *New);
 
+  /// \brief Return true if this basic block is an exception handling block.
+  bool isEHBlock() const { return getFirstNonPHI()->isEHBlock(); }
+
   /// \brief Return true if this basic block is a landing pad.
   ///
   /// Being a ``landing pad'' means that the basic block is the destination of
index e6b5393..9f6fd34 100644 (file)
@@ -672,6 +672,38 @@ public:
     return Insert(ResumeInst::Create(Exn));
   }
 
+  CleanupReturnInst *CreateCleanupRet(BasicBlock *UnwindBB = nullptr,
+                               Value *RetVal = nullptr) {
+    return Insert(CleanupReturnInst::Create(Context, RetVal, UnwindBB));
+  }
+
+  CatchBlockInst *CreateCatchBlock(Type *Ty, BasicBlock *NormalDest,
+                                   BasicBlock *UnwindDest,
+                                   ArrayRef<Value *> Args,
+                                   const Twine &Name = "") {
+    return Insert(CatchBlockInst::Create(Ty, NormalDest, UnwindDest, Args),
+                  Name);
+  }
+
+  CatchEndBlockInst *CreateCatchEndBlock(BasicBlock *UnwindBB = nullptr) {
+    return Insert(CatchEndBlockInst::Create(Context, UnwindBB));
+  }
+
+  TerminateBlockInst *CreateTerminateBlock(BasicBlock *NormalDest = nullptr,
+                                           ArrayRef<Value *> Args = {},
+                                           const Twine &Name = "") {
+    return Insert(TerminateBlockInst::Create(Context, NormalDest, Args), Name);
+  }
+
+  CleanupBlockInst *CreateCleanupBlock(Type *Ty, ArrayRef<Value *> Args,
+                                       const Twine &Name = "") {
+    return Insert(CleanupBlockInst::Create(Ty, Args), Name);
+  }
+
+  CatchReturnInst *CreateCatchRet(BasicBlock *BB) {
+    return Insert(CatchReturnInst::Create(BB));
+  }
+
   UnreachableInst *CreateUnreachable() {
     return Insert(new UnreachableInst(Context));
   }
index 581e860..37841c7 100644 (file)
@@ -169,6 +169,11 @@ public:
   RetTy visitIndirectBrInst(IndirectBrInst &I)    { DELEGATE(TerminatorInst);}
   RetTy visitResumeInst(ResumeInst &I)            { DELEGATE(TerminatorInst);}
   RetTy visitUnreachableInst(UnreachableInst &I)  { DELEGATE(TerminatorInst);}
+  RetTy visitCleanupReturnInst(CleanupReturnInst &I) { DELEGATE(TerminatorInst);}
+  RetTy visitCatchReturnInst(CatchReturnInst &I)  { DELEGATE(TerminatorInst);}
+  RetTy visitCatchBlockInst(CatchBlockInst &I)    { DELEGATE(TerminatorInst);}
+  RetTy visitCatchEndBlockInst(CatchEndBlockInst &I) { DELEGATE(TerminatorInst); }
+  RetTy visitTerminateBlockInst(TerminateBlockInst &I) { DELEGATE(TerminatorInst);}
   RetTy visitICmpInst(ICmpInst &I)                { DELEGATE(CmpInst);}
   RetTy visitFCmpInst(FCmpInst &I)                { DELEGATE(CmpInst);}
   RetTy visitAllocaInst(AllocaInst &I)            { DELEGATE(UnaryInstruction);}
@@ -200,6 +205,7 @@ public:
   RetTy visitExtractValueInst(ExtractValueInst &I){ DELEGATE(UnaryInstruction);}
   RetTy visitInsertValueInst(InsertValueInst &I)  { DELEGATE(Instruction); }
   RetTy visitLandingPadInst(LandingPadInst &I)    { DELEGATE(Instruction); }
+  RetTy visitCleanupBlockInst(CleanupBlockInst &I) { DELEGATE(Instruction); }
 
   // Handle the special instrinsic instruction classes.
   RetTy visitDbgDeclareInst(DbgDeclareInst &I)    { DELEGATE(DbgInfoIntrinsic);}
index b791ded..318fb2e 100644 (file)
@@ -75,6 +75,22 @@ public:
   static inline bool classof(const Value *V) {
     return isa<Instruction>(V) && classof(cast<Instruction>(V));
   }
+
+  // \brief Returns true if this terminator relates to exception handling.
+  bool isExceptional() const {
+    switch (getOpcode()) {
+    case Instruction::CatchBlock:
+    case Instruction::CatchEndBlock:
+    case Instruction::CatchRet:
+    case Instruction::CleanupRet:
+    case Instruction::Invoke:
+    case Instruction::Resume:
+    case Instruction::TerminateBlock:
+      return true;
+    default:
+      return false;
+    }
+  }
 };
 
 
index d46314c..801cc44 100644 (file)
 // instructions for it to be a well formed basic block.
 //
  FIRST_TERM_INST  ( 1)
-HANDLE_TERM_INST  ( 1, Ret        , ReturnInst)
-HANDLE_TERM_INST  ( 2, Br         , BranchInst)
-HANDLE_TERM_INST  ( 3, Switch     , SwitchInst)
-HANDLE_TERM_INST  ( 4, IndirectBr , IndirectBrInst)
-HANDLE_TERM_INST  ( 5, Invoke     , InvokeInst)
-HANDLE_TERM_INST  ( 6, Resume     , ResumeInst)
-HANDLE_TERM_INST  ( 7, Unreachable, UnreachableInst)
-  LAST_TERM_INST  ( 7)
+HANDLE_TERM_INST  ( 1, Ret           , ReturnInst)
+HANDLE_TERM_INST  ( 2, Br            , BranchInst)
+HANDLE_TERM_INST  ( 3, Switch        , SwitchInst)
+HANDLE_TERM_INST  ( 4, IndirectBr    , IndirectBrInst)
+HANDLE_TERM_INST  ( 5, Invoke        , InvokeInst)
+HANDLE_TERM_INST  ( 6, Resume        , ResumeInst)
+HANDLE_TERM_INST  ( 7, Unreachable   , UnreachableInst)
+HANDLE_TERM_INST  ( 8, CleanupRet    , CleanupReturnInst)
+HANDLE_TERM_INST  ( 9, CatchRet      , CatchReturnInst)
+HANDLE_TERM_INST  (10, CatchBlock    , CatchBlockInst)
+HANDLE_TERM_INST  (11, TerminateBlock, TerminateBlockInst)
+HANDLE_TERM_INST  (12, CatchEndBlock , CatchEndBlockInst)
+  LAST_TERM_INST  (12)
 
 // Standard binary operators...
- FIRST_BINARY_INST( 8)
-HANDLE_BINARY_INST( 8, Add  , BinaryOperator)
-HANDLE_BINARY_INST( 9, FAdd , BinaryOperator)
-HANDLE_BINARY_INST(10, Sub  , BinaryOperator)
-HANDLE_BINARY_INST(11, FSub , BinaryOperator)
-HANDLE_BINARY_INST(12, Mul  , BinaryOperator)
-HANDLE_BINARY_INST(13, FMul , BinaryOperator)
-HANDLE_BINARY_INST(14, UDiv , BinaryOperator)
-HANDLE_BINARY_INST(15, SDiv , BinaryOperator)
-HANDLE_BINARY_INST(16, FDiv , BinaryOperator)
-HANDLE_BINARY_INST(17, URem , BinaryOperator)
-HANDLE_BINARY_INST(18, SRem , BinaryOperator)
-HANDLE_BINARY_INST(19, FRem , BinaryOperator)
+ FIRST_BINARY_INST(13)
+HANDLE_BINARY_INST(13, Add  , BinaryOperator)
+HANDLE_BINARY_INST(14, FAdd , BinaryOperator)
+HANDLE_BINARY_INST(15, Sub  , BinaryOperator)
+HANDLE_BINARY_INST(16, FSub , BinaryOperator)
+HANDLE_BINARY_INST(17, Mul  , BinaryOperator)
+HANDLE_BINARY_INST(18, FMul , BinaryOperator)
+HANDLE_BINARY_INST(19, UDiv , BinaryOperator)
+HANDLE_BINARY_INST(20, SDiv , BinaryOperator)
+HANDLE_BINARY_INST(21, FDiv , BinaryOperator)
+HANDLE_BINARY_INST(22, URem , BinaryOperator)
+HANDLE_BINARY_INST(23, SRem , BinaryOperator)
+HANDLE_BINARY_INST(24, FRem , BinaryOperator)
 
 // Logical operators (integer operands)
-HANDLE_BINARY_INST(20, Shl  , BinaryOperator) // Shift left  (logical)
-HANDLE_BINARY_INST(21, LShr , BinaryOperator) // Shift right (logical)
-HANDLE_BINARY_INST(22, AShr , BinaryOperator) // Shift right (arithmetic)
-HANDLE_BINARY_INST(23, And  , BinaryOperator)
-HANDLE_BINARY_INST(24, Or   , BinaryOperator)
-HANDLE_BINARY_INST(25, Xor  , BinaryOperator)
-  LAST_BINARY_INST(25)
+HANDLE_BINARY_INST(25, Shl  , BinaryOperator) // Shift left  (logical)
+HANDLE_BINARY_INST(26, LShr , BinaryOperator) // Shift right (logical)
+HANDLE_BINARY_INST(27, AShr , BinaryOperator) // Shift right (arithmetic)
+HANDLE_BINARY_INST(28, And  , BinaryOperator)
+HANDLE_BINARY_INST(29, Or   , BinaryOperator)
+HANDLE_BINARY_INST(30, Xor  , BinaryOperator)
+  LAST_BINARY_INST(30)
 
 // Memory operators...
- FIRST_MEMORY_INST(26)
-HANDLE_MEMORY_INST(26, Alloca, AllocaInst)  // Stack management
-HANDLE_MEMORY_INST(27, Load  , LoadInst  )  // Memory manipulation instrs
-HANDLE_MEMORY_INST(28, Store , StoreInst )
-HANDLE_MEMORY_INST(29, GetElementPtr, GetElementPtrInst)
-HANDLE_MEMORY_INST(30, Fence , FenceInst )
-HANDLE_MEMORY_INST(31, AtomicCmpXchg , AtomicCmpXchgInst )
-HANDLE_MEMORY_INST(32, AtomicRMW , AtomicRMWInst )
-  LAST_MEMORY_INST(32)
+ FIRST_MEMORY_INST(31)
+HANDLE_MEMORY_INST(31, Alloca, AllocaInst)  // Stack management
+HANDLE_MEMORY_INST(32, Load  , LoadInst  )  // Memory manipulation instrs
+HANDLE_MEMORY_INST(33, Store , StoreInst )
+HANDLE_MEMORY_INST(34, GetElementPtr, GetElementPtrInst)
+HANDLE_MEMORY_INST(35, Fence , FenceInst )
+HANDLE_MEMORY_INST(36, AtomicCmpXchg , AtomicCmpXchgInst )
+HANDLE_MEMORY_INST(37, AtomicRMW , AtomicRMWInst )
+  LAST_MEMORY_INST(37)
 
 // Cast operators ...
 // NOTE: The order matters here because CastInst::isEliminableCastPair 
 // NOTE: (see Instructions.cpp) encodes a table based on this ordering.
- FIRST_CAST_INST(33)
-HANDLE_CAST_INST(33, Trunc   , TruncInst   )  // Truncate integers
-HANDLE_CAST_INST(34, ZExt    , ZExtInst    )  // Zero extend integers
-HANDLE_CAST_INST(35, SExt    , SExtInst    )  // Sign extend integers
-HANDLE_CAST_INST(36, FPToUI  , FPToUIInst  )  // floating point -> UInt
-HANDLE_CAST_INST(37, FPToSI  , FPToSIInst  )  // floating point -> SInt
-HANDLE_CAST_INST(38, UIToFP  , UIToFPInst  )  // UInt -> floating point
-HANDLE_CAST_INST(39, SIToFP  , SIToFPInst  )  // SInt -> floating point
-HANDLE_CAST_INST(40, FPTrunc , FPTruncInst )  // Truncate floating point
-HANDLE_CAST_INST(41, FPExt   , FPExtInst   )  // Extend floating point
-HANDLE_CAST_INST(42, PtrToInt, PtrToIntInst)  // Pointer -> Integer
-HANDLE_CAST_INST(43, IntToPtr, IntToPtrInst)  // Integer -> Pointer
-HANDLE_CAST_INST(44, BitCast , BitCastInst )  // Type cast
-HANDLE_CAST_INST(45, AddrSpaceCast, AddrSpaceCastInst)  // addrspace cast
-  LAST_CAST_INST(45)
+ FIRST_CAST_INST(38)
+HANDLE_CAST_INST(38, Trunc   , TruncInst   )  // Truncate integers
+HANDLE_CAST_INST(39, ZExt    , ZExtInst    )  // Zero extend integers
+HANDLE_CAST_INST(40, SExt    , SExtInst    )  // Sign extend integers
+HANDLE_CAST_INST(41, FPToUI  , FPToUIInst  )  // floating point -> UInt
+HANDLE_CAST_INST(42, FPToSI  , FPToSIInst  )  // floating point -> SInt
+HANDLE_CAST_INST(43, UIToFP  , UIToFPInst  )  // UInt -> floating point
+HANDLE_CAST_INST(44, SIToFP  , SIToFPInst  )  // SInt -> floating point
+HANDLE_CAST_INST(45, FPTrunc , FPTruncInst )  // Truncate floating point
+HANDLE_CAST_INST(46, FPExt   , FPExtInst   )  // Extend floating point
+HANDLE_CAST_INST(47, PtrToInt, PtrToIntInst)  // Pointer -> Integer
+HANDLE_CAST_INST(48, IntToPtr, IntToPtrInst)  // Integer -> Pointer
+HANDLE_CAST_INST(49, BitCast , BitCastInst )  // Type cast
+HANDLE_CAST_INST(50, AddrSpaceCast, AddrSpaceCastInst)  // addrspace cast
+  LAST_CAST_INST(50)
 
 // Other operators...
- FIRST_OTHER_INST(46)
-HANDLE_OTHER_INST(46, ICmp   , ICmpInst   )  // Integer comparison instruction
-HANDLE_OTHER_INST(47, FCmp   , FCmpInst   )  // Floating point comparison instr.
-HANDLE_OTHER_INST(48, PHI    , PHINode    )  // PHI node instruction
-HANDLE_OTHER_INST(49, Call   , CallInst   )  // Call a function
-HANDLE_OTHER_INST(50, Select , SelectInst )  // select instruction
-HANDLE_OTHER_INST(51, UserOp1, Instruction)  // May be used internally in a pass
-HANDLE_OTHER_INST(52, UserOp2, Instruction)  // Internal to passes only
-HANDLE_OTHER_INST(53, VAArg  , VAArgInst  )  // vaarg instruction
-HANDLE_OTHER_INST(54, ExtractElement, ExtractElementInst)// extract from vector
-HANDLE_OTHER_INST(55, InsertElement, InsertElementInst)  // insert into vector
-HANDLE_OTHER_INST(56, ShuffleVector, ShuffleVectorInst)  // shuffle two vectors.
-HANDLE_OTHER_INST(57, ExtractValue, ExtractValueInst)// extract from aggregate
-HANDLE_OTHER_INST(58, InsertValue, InsertValueInst)  // insert into aggregate
-HANDLE_OTHER_INST(59, LandingPad, LandingPadInst)  // Landing pad instruction.
-  LAST_OTHER_INST(59)
+ FIRST_OTHER_INST(51)
+HANDLE_OTHER_INST(51, ICmp   , ICmpInst   )  // Integer comparison instruction
+HANDLE_OTHER_INST(52, FCmp   , FCmpInst   )  // Floating point comparison instr.
+HANDLE_OTHER_INST(53, PHI    , PHINode    )  // PHI node instruction
+HANDLE_OTHER_INST(54, Call   , CallInst   )  // Call a function
+HANDLE_OTHER_INST(55, Select , SelectInst )  // select instruction
+HANDLE_OTHER_INST(56, UserOp1, Instruction)  // May be used internally in a pass
+HANDLE_OTHER_INST(57, UserOp2, Instruction)  // Internal to passes only
+HANDLE_OTHER_INST(58, VAArg  , VAArgInst  )  // vaarg instruction
+HANDLE_OTHER_INST(59, ExtractElement, ExtractElementInst)// extract from vector
+HANDLE_OTHER_INST(60, InsertElement, InsertElementInst)  // insert into vector
+HANDLE_OTHER_INST(61, ShuffleVector, ShuffleVectorInst)  // shuffle two vectors.
+HANDLE_OTHER_INST(62, ExtractValue, ExtractValueInst)// extract from aggregate
+HANDLE_OTHER_INST(63, InsertValue, InsertValueInst)  // insert into aggregate
+HANDLE_OTHER_INST(64, LandingPad, LandingPadInst)  // Landing pad instruction.
+HANDLE_OTHER_INST(65, CleanupBlock, CleanupBlockInst)
+  LAST_OTHER_INST(65)
 
 #undef  FIRST_TERM_INST
 #undef HANDLE_TERM_INST
index 31f363f..a81c97d 100644 (file)
@@ -388,6 +388,20 @@ public:
     return mayWriteToMemory() || mayThrow() || !mayReturn();
   }
 
+  /// \brief Return true if the instruction is a variety of EH-block.
+  bool isEHBlock() const {
+    switch (getOpcode()) {
+    case Instruction::CatchBlock:
+    case Instruction::CatchEndBlock:
+    case Instruction::CleanupBlock:
+    case Instruction::LandingPad:
+    case Instruction::TerminateBlock:
+      return true;
+    default:
+      return false;
+    }
+  }
+
   /// clone() - Create a copy of 'this' instruction that is identical in all
   /// ways except the following:
   ///   * The instruction has no parent
index 62723e4..82c9a69 100644 (file)
@@ -3551,6 +3551,526 @@ struct OperandTraits<ResumeInst> :
 
 DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ResumeInst, Value)
 
+//===----------------------------------------------------------------------===//
+//                               CleanupReturnInst Class
+//===----------------------------------------------------------------------===//
+
+class CleanupReturnInst : public TerminatorInst {
+  CleanupReturnInst(const CleanupReturnInst &RI);
+
+private:
+  void init(Value *RetVal, BasicBlock *UnwindBB);
+  CleanupReturnInst(LLVMContext &C, Value *RetVal, BasicBlock *UnwindBB,
+                    unsigned Values, Instruction *InsertBefore = nullptr);
+  CleanupReturnInst(LLVMContext &C, Value *RetVal, BasicBlock *UnwindBB,
+                    unsigned Values, BasicBlock *InsertAtEnd);
+
+  int getUnwindLabelOpIdx() const {
+    assert(hasUnwindDest());
+    return 0;
+  }
+
+  int getRetValOpIdx() const {
+    assert(hasReturnValue());
+    if (hasUnwindDest())
+      return 1;
+    return 0;
+  }
+
+protected:
+  // Note: Instruction needs to be a friend here to call cloneImpl.
+  friend class Instruction;
+  CleanupReturnInst *cloneImpl() const;
+
+public:
+  static CleanupReturnInst *Create(LLVMContext &C,
+                                   Value *RetVal = nullptr,
+                                   BasicBlock *UnwindBB = nullptr,
+                                   Instruction *InsertBefore = nullptr) {
+    unsigned Values = 0;
+    if (RetVal)
+      ++Values;
+    if (UnwindBB)
+      ++Values;
+    return new (Values)
+        CleanupReturnInst(C, RetVal, UnwindBB, Values, InsertBefore);
+  }
+  static CleanupReturnInst *Create(LLVMContext &C, Value *RetVal,
+                                   BasicBlock *UnwindBB,
+                                   BasicBlock *InsertAtEnd) {
+    unsigned Values = 0;
+    if (RetVal)
+      ++Values;
+    if (UnwindBB)
+      ++Values;
+    return new (Values)
+        CleanupReturnInst(C, RetVal, UnwindBB, Values, InsertAtEnd);
+  }
+
+  /// Provide fast operand accessors
+  DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
+
+  bool hasUnwindDest() const { return getSubclassDataFromInstruction() & 1; }
+  bool unwindsToCaller() const { return !hasUnwindDest(); }
+  bool hasReturnValue() const { return getSubclassDataFromInstruction() & 2; }
+
+  /// Convenience accessor. Returns null if there is no return value.
+  Value *getReturnValue() const {
+    if (!hasReturnValue())
+      return nullptr;
+    return getOperand(getRetValOpIdx());
+  }
+  void setReturnValue(Value *RetVal) {
+    assert(hasReturnValue());
+    setOperand(getRetValOpIdx(), RetVal);
+  }
+
+  unsigned getNumSuccessors() const { return hasUnwindDest() ? 1 : 0; }
+
+  BasicBlock *getUnwindDest() const;
+  void setUnwindDest(BasicBlock *NewDest);
+
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline bool classof(const Instruction *I) {
+    return (I->getOpcode() == Instruction::CleanupRet);
+  }
+  static inline bool classof(const Value *V) {
+    return isa<Instruction>(V) && classof(cast<Instruction>(V));
+  }
+
+private:
+  BasicBlock *getSuccessorV(unsigned Idx) const override;
+  unsigned getNumSuccessorsV() const override;
+  void setSuccessorV(unsigned Idx, BasicBlock *B) override;
+
+  // Shadow Instruction::setInstructionSubclassData with a private forwarding
+  // method so that subclasses cannot accidentally use it.
+  void setInstructionSubclassData(unsigned short D) {
+    Instruction::setInstructionSubclassData(D);
+  }
+};
+
+template <>
+struct OperandTraits<CleanupReturnInst>
+    : public VariadicOperandTraits<CleanupReturnInst> {};
+
+DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CleanupReturnInst, Value)
+
+//===----------------------------------------------------------------------===//
+//                               CatchEndBlockInst Class
+//===----------------------------------------------------------------------===//
+
+class CatchEndBlockInst : public TerminatorInst {
+  CatchEndBlockInst(const CatchEndBlockInst &RI);
+
+private:
+  void init(BasicBlock *UnwindBB);
+  CatchEndBlockInst(LLVMContext &C, BasicBlock *UnwindBB, unsigned Values,
+                    Instruction *InsertBefore = nullptr);
+  CatchEndBlockInst(LLVMContext &C, BasicBlock *UnwindBB, unsigned Values,
+                    BasicBlock *InsertAtEnd);
+
+protected:
+  // Note: Instruction needs to be a friend here to call cloneImpl.
+  friend class Instruction;
+  CatchEndBlockInst *cloneImpl() const;
+
+public:
+  static CatchEndBlockInst *Create(LLVMContext &C,
+                                   BasicBlock *UnwindBB = nullptr,
+                                   Instruction *InsertBefore = nullptr) {
+    unsigned Values = UnwindBB ? 1 : 0;
+    return new (Values) CatchEndBlockInst(C, UnwindBB, Values, InsertBefore);
+  }
+  static CatchEndBlockInst *Create(LLVMContext &C, BasicBlock *UnwindBB,
+                                   BasicBlock *InsertAtEnd) {
+    unsigned Values = UnwindBB ? 1 : 0;
+    return new (Values) CatchEndBlockInst(C, UnwindBB, Values, InsertAtEnd);
+  }
+
+  /// Provide fast operand accessors
+  DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
+
+  bool hasUnwindDest() const { return getSubclassDataFromInstruction() & 1; }
+  bool unwindsToCaller() const { return !hasUnwindDest(); }
+
+  /// Convenience accessor. Returns null if there is no return value.
+  unsigned getNumSuccessors() const { return hasUnwindDest() ? 1 : 0; }
+
+  BasicBlock *getUnwindDest() const { return cast<BasicBlock>(Op<-1>()); }
+  void setUnwindDest(BasicBlock *NewDest) {
+    assert(NewDest);
+    Op<-1>() = NewDest;
+  }
+
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline bool classof(const Instruction *I) {
+    return (I->getOpcode() == Instruction::CatchEndBlock);
+  }
+  static inline bool classof(const Value *V) {
+    return isa<Instruction>(V) && classof(cast<Instruction>(V));
+  }
+
+private:
+  BasicBlock *getSuccessorV(unsigned Idx) const override;
+  unsigned getNumSuccessorsV() const override;
+  void setSuccessorV(unsigned Idx, BasicBlock *B) override;
+
+private:
+  // Shadow Instruction::setInstructionSubclassData with a private forwarding
+  // method so that subclasses cannot accidentally use it.
+  void setInstructionSubclassData(unsigned short D) {
+    Instruction::setInstructionSubclassData(D);
+  }
+};
+
+template <>
+struct OperandTraits<CatchEndBlockInst>
+    : public VariadicOperandTraits<CatchEndBlockInst> {};
+
+DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CatchEndBlockInst, Value)
+
+//===----------------------------------------------------------------------===//
+//                           CatchBlockInst Class
+//===----------------------------------------------------------------------===//
+
+class CatchBlockInst : public TerminatorInst {
+private:
+  void init(BasicBlock *IfNormal, BasicBlock *IfException,
+            ArrayRef<Value *> Args, const Twine &NameStr);
+
+  CatchBlockInst(const CatchBlockInst &CBI);
+
+  explicit CatchBlockInst(Type *RetTy, BasicBlock *IfNormal,
+                          BasicBlock *IfException, ArrayRef<Value *> Args,
+                          unsigned Values, const Twine &NameStr,
+                          Instruction *InsertBefore);
+  explicit CatchBlockInst(Type *RetTy, BasicBlock *IfNormal,
+                          BasicBlock *IfException, ArrayRef<Value *> Args,
+                          unsigned Values, const Twine &NameStr,
+                          BasicBlock *InsertAtEnd);
+
+protected:
+  // Note: Instruction needs to be a friend here to call cloneImpl.
+  friend class Instruction;
+  CatchBlockInst *cloneImpl() const;
+
+public:
+  static CatchBlockInst *Create(Type *RetTy, BasicBlock *IfNormal,
+                                BasicBlock *IfException, ArrayRef<Value *> Args,
+                                const Twine &NameStr = "",
+                                Instruction *InsertBefore = nullptr) {
+    unsigned Values = unsigned(Args.size()) + 2;
+    return new (Values) CatchBlockInst(RetTy, IfNormal, IfException, Args,
+                                       Values, NameStr, InsertBefore);
+  }
+  static CatchBlockInst *Create(Type *RetTy, BasicBlock *IfNormal,
+                                BasicBlock *IfException, ArrayRef<Value *> Args,
+                                const Twine &NameStr, BasicBlock *InsertAtEnd) {
+    unsigned Values = unsigned(Args.size()) + 2;
+    return new (Values) CatchBlockInst(RetTy, IfNormal, IfException, Args,
+                                       Values, NameStr, InsertAtEnd);
+  }
+
+  /// Provide fast operand accessors
+  DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
+
+  /// getNumArgOperands - Return the number of catchblock arguments.
+  ///
+  unsigned getNumArgOperands() const { return getNumOperands() - 2; }
+
+  /// getArgOperand/setArgOperand - Return/set the i-th catchblock argument.
+  ///
+  Value *getArgOperand(unsigned i) const { return getOperand(i); }
+  void setArgOperand(unsigned i, Value *v) { setOperand(i, v); }
+
+  /// arg_operands - iteration adapter for range-for loops.
+  iterator_range<op_iterator> arg_operands() {
+    return iterator_range<op_iterator>(op_begin(), op_end() - 2);
+  }
+
+  /// arg_operands - iteration adapter for range-for loops.
+  iterator_range<const_op_iterator> arg_operands() const {
+    return iterator_range<const_op_iterator>(op_begin(), op_end() - 2);
+  }
+
+  /// \brief Wrappers for getting the \c Use of a catchblock argument.
+  const Use &getArgOperandUse(unsigned i) const { return getOperandUse(i); }
+  Use &getArgOperandUse(unsigned i) { return getOperandUse(i); }
+
+  // get*Dest - Return the destination basic blocks...
+  BasicBlock *getNormalDest() const { return cast<BasicBlock>(Op<-2>()); }
+  BasicBlock *getUnwindDest() const { return cast<BasicBlock>(Op<-1>()); }
+  void setNormalDest(BasicBlock *B) { Op<-2>() = reinterpret_cast<Value *>(B); }
+  void setUnwindDest(BasicBlock *B) { Op<-1>() = reinterpret_cast<Value *>(B); }
+
+  BasicBlock *getSuccessor(unsigned i) const {
+    assert(i < 2 && "Successor # out of range for invoke!");
+    return i == 0 ? getNormalDest() : getUnwindDest();
+  }
+
+  void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
+    assert(idx < 2 && "Successor # out of range for invoke!");
+    *(&Op<-2>() + idx) = reinterpret_cast<Value *>(NewSucc);
+  }
+
+  unsigned getNumSuccessors() const { return 2; }
+
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline bool classof(const Instruction *I) {
+    return I->getOpcode() == Instruction::CatchBlock;
+  }
+  static inline bool classof(const Value *V) {
+    return isa<Instruction>(V) && classof(cast<Instruction>(V));
+  }
+
+private:
+  BasicBlock *getSuccessorV(unsigned idx) const override;
+  unsigned getNumSuccessorsV() const override;
+  void setSuccessorV(unsigned idx, BasicBlock *B) override;
+};
+
+template <>
+struct OperandTraits<CatchBlockInst>
+    : public VariadicOperandTraits<CatchBlockInst, /*MINARITY=*/2> {};
+
+DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CatchBlockInst, Value)
+
+//===----------------------------------------------------------------------===//
+//                           TerminateBlockInst Class
+//===----------------------------------------------------------------------===//
+
+class TerminateBlockInst : public TerminatorInst {
+private:
+  void init(BasicBlock *BB, ArrayRef<Value *> Args, const Twine &NameStr);
+
+  TerminateBlockInst(const TerminateBlockInst &TBI);
+
+  explicit TerminateBlockInst(LLVMContext &C, BasicBlock *BB,
+                              ArrayRef<Value *> Args, unsigned Values,
+                              const Twine &NameStr, Instruction *InsertBefore);
+  explicit TerminateBlockInst(LLVMContext &C, BasicBlock *BB,
+                              ArrayRef<Value *> Args, unsigned Values,
+                              const Twine &NameStr, BasicBlock *InsertAtEnd);
+
+protected:
+  // Note: Instruction needs to be a friend here to call cloneImpl.
+  friend class Instruction;
+  TerminateBlockInst *cloneImpl() const;
+
+public:
+  static TerminateBlockInst *Create(LLVMContext &C, BasicBlock *BB = nullptr,
+                                    ArrayRef<Value *> Args = {},
+                                    const Twine &NameStr = "",
+                                    Instruction *InsertBefore = nullptr) {
+    unsigned Values = unsigned(Args.size());
+    if (BB)
+      ++Values;
+    return new (Values)
+        TerminateBlockInst(C, BB, Args, Values, NameStr, InsertBefore);
+  }
+  static TerminateBlockInst *Create(LLVMContext &C, BasicBlock *BB,
+                                    ArrayRef<Value *> Args,
+                                    const Twine &NameStr,
+                                    BasicBlock *InsertAtEnd) {
+    unsigned Values = unsigned(Args.size());
+    if (BB)
+      ++Values;
+    return new (Values)
+        TerminateBlockInst(C, BB, Args, Values, NameStr, InsertAtEnd);
+  }
+
+  /// Provide fast operand accessors
+  DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
+
+  bool hasUnwindDest() const { return getSubclassDataFromInstruction() & 1; }
+  bool unwindsToCaller() const { return !hasUnwindDest(); }
+
+  /// getNumArgOperands - Return the number of terminateblock arguments.
+  ///
+  unsigned getNumArgOperands() const {
+    unsigned NumOperands = getNumOperands();
+    if (hasUnwindDest())
+      return NumOperands - 1;
+    return NumOperands;
+  }
+
+  /// getArgOperand/setArgOperand - Return/set the i-th terminateblock argument.
+  ///
+  Value *getArgOperand(unsigned i) const { return getOperand(i); }
+  void setArgOperand(unsigned i, Value *v) { setOperand(i, v); }
+
+  const_op_iterator arg_end() const {
+    if (hasUnwindDest())
+      return op_end() - 1;
+    return op_end();
+  }
+
+  op_iterator arg_end() {
+    if (hasUnwindDest())
+      return op_end() - 1;
+    return op_end();
+  }
+
+  /// arg_operands - iteration adapter for range-for loops.
+  iterator_range<op_iterator> arg_operands() {
+    return iterator_range<op_iterator>(op_begin(), arg_end());
+  }
+
+  /// arg_operands - iteration adapter for range-for loops.
+  iterator_range<const_op_iterator> arg_operands() const {
+    return iterator_range<const_op_iterator>(op_begin(), arg_end());
+  }
+
+  /// \brief Wrappers for getting the \c Use of a terminateblock argument.
+  const Use &getArgOperandUse(unsigned i) const { return getOperandUse(i); }
+  Use &getArgOperandUse(unsigned i) { return getOperandUse(i); }
+
+  // get*Dest - Return the destination basic blocks...
+  BasicBlock *getUnwindDest() const {
+    if (!hasUnwindDest())
+      return nullptr;
+    return cast<BasicBlock>(Op<-1>());
+  }
+  void setUnwindDest(BasicBlock *B) {
+    assert(B && hasUnwindDest());
+    Op<-1>() = reinterpret_cast<Value *>(B);
+  }
+
+  unsigned getNumSuccessors() const { return hasUnwindDest() ? 1 : 0; }
+
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline bool classof(const Instruction *I) {
+    return I->getOpcode() == Instruction::TerminateBlock;
+  }
+  static inline bool classof(const Value *V) {
+    return isa<Instruction>(V) && classof(cast<Instruction>(V));
+  }
+
+private:
+  BasicBlock *getSuccessorV(unsigned idx) const override;
+  unsigned getNumSuccessorsV() const override;
+  void setSuccessorV(unsigned idx, BasicBlock *B) override;
+
+  // Shadow Instruction::setInstructionSubclassData with a private forwarding
+  // method so that subclasses cannot accidentally use it.
+  void setInstructionSubclassData(unsigned short D) {
+    Instruction::setInstructionSubclassData(D);
+  }
+};
+
+template <>
+struct OperandTraits<TerminateBlockInst>
+    : public VariadicOperandTraits<TerminateBlockInst, /*MINARITY=*/1> {};
+
+DEFINE_TRANSPARENT_OPERAND_ACCESSORS(TerminateBlockInst, Value)
+
+//===----------------------------------------------------------------------===//
+//                           CleanupBlockInst Class
+//===----------------------------------------------------------------------===//
+
+class CleanupBlockInst : public Instruction {
+private:
+  void init(ArrayRef<Value *> Args, const Twine &NameStr);
+
+  CleanupBlockInst(const CleanupBlockInst &TBI);
+
+  explicit CleanupBlockInst(Type *RetTy, ArrayRef<Value *> Args,
+                            const Twine &NameStr, Instruction *InsertBefore);
+  explicit CleanupBlockInst(Type *RetTy, ArrayRef<Value *> Args,
+                            const Twine &NameStr, BasicBlock *InsertAtEnd);
+
+protected:
+  // Note: Instruction needs to be a friend here to call cloneImpl.
+  friend class Instruction;
+  CleanupBlockInst *cloneImpl() const;
+
+public:
+  static CleanupBlockInst *Create(Type *RetTy, ArrayRef<Value *> Args,
+                                  const Twine &NameStr = "",
+                                  Instruction *InsertBefore = nullptr) {
+    return new (Args.size())
+        CleanupBlockInst(RetTy, Args, NameStr, InsertBefore);
+  }
+  static CleanupBlockInst *Create(Type *RetTy, ArrayRef<Value *> Args,
+                                  const Twine &NameStr,
+                                  BasicBlock *InsertAtEnd) {
+    return new (Args.size())
+        CleanupBlockInst(RetTy, Args, NameStr, InsertAtEnd);
+  }
+
+  /// Provide fast operand accessors
+  DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
+
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline bool classof(const Instruction *I) {
+    return I->getOpcode() == Instruction::CleanupBlock;
+  }
+  static inline bool classof(const Value *V) {
+    return isa<Instruction>(V) && classof(cast<Instruction>(V));
+  }
+};
+
+template <>
+struct OperandTraits<CleanupBlockInst>
+    : public VariadicOperandTraits<CleanupBlockInst, /*MINARITY=*/0> {};
+
+DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CleanupBlockInst, Value)
+
+//===----------------------------------------------------------------------===//
+//                               CatchReturnInst Class
+//===----------------------------------------------------------------------===//
+
+class CatchReturnInst : public TerminatorInst {
+  CatchReturnInst(const CatchReturnInst &RI);
+
+private:
+  void init(Value *RetVal, BasicBlock *UnwindBB);
+  CatchReturnInst(BasicBlock *BB, Instruction *InsertBefore = nullptr);
+  CatchReturnInst(BasicBlock *BB, BasicBlock *InsertAtEnd);
+
+protected:
+  // Note: Instruction needs to be a friend here to call cloneImpl.
+  friend class Instruction;
+  CatchReturnInst *cloneImpl() const;
+
+public:
+  static CatchReturnInst *Create(BasicBlock *BB,
+                                 Instruction *InsertBefore = nullptr) {
+    return new (1) CatchReturnInst(BB, InsertBefore);
+  }
+  static CatchReturnInst *Create(BasicBlock *BB, BasicBlock *InsertAtEnd) {
+    return new (1) CatchReturnInst(BB, InsertAtEnd);
+  }
+
+  /// Provide fast operand accessors
+  DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
+
+  /// Convenience accessors.
+  BasicBlock *getSuccessor() const { return cast<BasicBlock>(Op<0>()); }
+  void setSuccessor(BasicBlock *NewSucc) { Op<0>() = (Value *)NewSucc; }
+  unsigned getNumSuccessors() const { return 1; }
+
+  // Methods for support type inquiry through isa, cast, and dyn_cast:
+  static inline bool classof(const Instruction *I) {
+    return (I->getOpcode() == Instruction::CatchRet);
+  }
+  static inline bool classof(const Value *V) {
+    return isa<Instruction>(V) && classof(cast<Instruction>(V));
+  }
+
+private:
+  BasicBlock *getSuccessorV(unsigned Idx) const override;
+  unsigned getNumSuccessorsV() const override;
+  void setSuccessorV(unsigned Idx, BasicBlock *B) override;
+};
+
+template <>
+struct OperandTraits<CatchReturnInst>
+    : public FixedNumOperandTraits<CatchReturnInst, /*ARITY=*/1> {};
+
+DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CatchReturnInst, Value)
+
 //===----------------------------------------------------------------------===//
 //                           UnreachableInst Class
 //===----------------------------------------------------------------------===//
index c0d2e37..213644c 100644 (file)
@@ -156,6 +156,8 @@ class CallAnalyzer : public InstVisitor<CallAnalyzer, bool> {
   bool visitSwitchInst(SwitchInst &SI);
   bool visitIndirectBrInst(IndirectBrInst &IBI);
   bool visitResumeInst(ResumeInst &RI);
+  bool visitCleanupReturnInst(CleanupReturnInst &RI);
+  bool visitCatchReturnInst(CatchReturnInst &RI);
   bool visitUnreachableInst(UnreachableInst &I);
 
 public:
@@ -903,6 +905,18 @@ bool CallAnalyzer::visitResumeInst(ResumeInst &RI) {
   return false;
 }
 
+bool CallAnalyzer::visitCleanupReturnInst(CleanupReturnInst &CRI) {
+  // FIXME: It's not clear that a single instruction is an accurate model for
+  // the inline cost of a cleanupret instruction.
+  return false;
+}
+
+bool CallAnalyzer::visitCatchReturnInst(CatchReturnInst &CRI) {
+  // FIXME: It's not clear that a single instruction is an accurate model for
+  // the inline cost of a cleanupret instruction.
+  return false;
+}
+
 bool CallAnalyzer::visitUnreachableInst(UnreachableInst &I) {
   // FIXME: It might be reasonably to discount the cost of instructions leading
   // to unreachable as they have the lowest possible impact on both runtime and
index 88f359d..69c2048 100644 (file)
@@ -524,6 +524,7 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(undef);
   KEYWORD(null);
   KEYWORD(to);
+  KEYWORD(caller);
   KEYWORD(tail);
   KEYWORD(musttail);
   KEYWORD(target);
@@ -748,6 +749,12 @@ lltok::Kind LLLexer::LexIdentifier() {
   INSTKEYWORD(extractvalue,   ExtractValue);
   INSTKEYWORD(insertvalue,    InsertValue);
   INSTKEYWORD(landingpad,     LandingPad);
+  INSTKEYWORD(cleanupret,     CleanupRet);
+  INSTKEYWORD(catchret,       CatchRet);
+  INSTKEYWORD(catchblock,     CatchBlock);
+  INSTKEYWORD(terminateblock, TerminateBlock);
+  INSTKEYWORD(cleanupblock,   CleanupBlock);
+  INSTKEYWORD(catchendblock,  CatchEndBlock);
 #undef INSTKEYWORD
 
 #define DWKEYWORD(TYPE, TOKEN)                                                 \
index 91a88bc..4e28410 100644 (file)
@@ -4489,6 +4489,12 @@ int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
   case lltok::kw_indirectbr:  return ParseIndirectBr(Inst, PFS);
   case lltok::kw_invoke:      return ParseInvoke(Inst, PFS);
   case lltok::kw_resume:      return ParseResume(Inst, PFS);
+  case lltok::kw_cleanupret:  return ParseCleanupRet(Inst, PFS);
+  case lltok::kw_catchret:    return ParseCatchRet(Inst, PFS);
+  case lltok::kw_catchblock:  return ParseCatchBlock(Inst, PFS);
+  case lltok::kw_terminateblock: return ParseTerminateBlock(Inst, PFS);
+  case lltok::kw_cleanupblock: return ParseCleanupBlock(Inst, PFS);
+  case lltok::kw_catchendblock: return ParseCatchEndBlock(Inst, PFS);
   // Binary Operators.
   case lltok::kw_add:
   case lltok::kw_sub:
@@ -4882,6 +4888,161 @@ bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
   return false;
 }
 
+bool LLParser::ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
+                                  PerFunctionState &PFS) {
+  if (ParseToken(lltok::lsquare, "expected '[' in cleanupblock"))
+    return true;
+
+  while (Lex.getKind() != lltok::rsquare) {
+    // If this isn't the first argument, we need a comma.
+    if (!Args.empty() &&
+        ParseToken(lltok::comma, "expected ',' in argument list"))
+      return true;
+
+    // Parse the argument.
+    LocTy ArgLoc;
+    Type *ArgTy = nullptr;
+    if (ParseType(ArgTy, ArgLoc))
+      return true;
+
+    Value *V;
+    if (ArgTy->isMetadataTy()) {
+      if (ParseMetadataAsValue(V, PFS))
+        return true;
+    } else {
+      if (ParseValue(ArgTy, V, PFS))
+        return true;
+    }
+    Args.push_back(V);
+  }
+
+  Lex.Lex();  // Lex the ']'.
+  return false;
+}
+
+/// ParseCleanupRet
+///   ::= 'cleanupret' ('void' | TypeAndValue) unwind ('to' 'caller' | TypeAndValue)
+bool LLParser::ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS) {
+  Type *RetTy = nullptr;
+  Value *RetVal = nullptr;
+  if (ParseType(RetTy, /*AllowVoid=*/true))
+    return true;
+
+  if (!RetTy->isVoidTy())
+    if (ParseValue(RetTy, RetVal, PFS))
+      return true;
+
+  if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
+    return true;
+
+  BasicBlock *UnwindBB = nullptr;
+  if (Lex.getKind() == lltok::kw_to) {
+    Lex.Lex();
+    if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
+      return true;
+  } else {
+    if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
+      return true;
+    }
+  }
+
+  Inst = CleanupReturnInst::Create(Context, RetVal, UnwindBB);
+  return false;
+}
+
+/// ParseCatchRet
+///   ::= 'catchret' TypeAndValue
+bool LLParser::ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS) {
+  BasicBlock *BB;
+  if (ParseTypeAndBasicBlock(BB, PFS))
+      return true;
+
+  Inst = CatchReturnInst::Create(BB);
+  return false;
+}
+
+/// ParseCatchBlock
+///   ::= 'catchblock' Type ParamList 'to' TypeAndValue 'unwind' TypeAndValue
+bool LLParser::ParseCatchBlock(Instruction *&Inst, PerFunctionState &PFS) {
+  Type *RetType = nullptr;
+
+  SmallVector<Value *, 8> Args;
+  if (ParseType(RetType, /*AllowVoid=*/true) || ParseExceptionArgs(Args, PFS))
+    return true;
+
+  BasicBlock *NormalBB, *UnwindBB;
+  if (ParseToken(lltok::kw_to, "expected 'to' in catchblock") ||
+      ParseTypeAndBasicBlock(NormalBB, PFS) ||
+      ParseToken(lltok::kw_unwind, "expected 'unwind' in catchblock") ||
+      ParseTypeAndBasicBlock(UnwindBB, PFS))
+    return true;
+
+  Inst = CatchBlockInst::Create(RetType, NormalBB, UnwindBB, Args);
+  return false;
+}
+
+/// ParseTerminateBlock
+///   ::= 'terminateblock' ParamList 'to' TypeAndValue
+bool LLParser::ParseTerminateBlock(Instruction *&Inst, PerFunctionState &PFS) {
+  SmallVector<Value *, 8> Args;
+  if (ParseExceptionArgs(Args, PFS))
+    return true;
+
+  if (ParseToken(lltok::kw_unwind, "expected 'unwind' in terminateblock"))
+    return true;
+
+  BasicBlock *UnwindBB = nullptr;
+  if (Lex.getKind() == lltok::kw_to) {
+    Lex.Lex();
+    if (ParseToken(lltok::kw_caller, "expected 'caller' in cleanupret"))
+      return true;
+  } else {
+    if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
+      return true;
+    }
+  }
+
+  Inst = TerminateBlockInst::Create(Context, UnwindBB, Args);
+  return false;
+}
+
+/// ParseCleanupBlock
+///   ::= 'cleanupblock' ParamList
+bool LLParser::ParseCleanupBlock(Instruction *&Inst, PerFunctionState &PFS) {
+  Type *RetType = nullptr;
+
+  SmallVector<Value *, 8> Args;
+  if (ParseType(RetType, /*AllowVoid=*/true) || ParseExceptionArgs(Args, PFS))
+    return true;
+
+  Inst = CleanupBlockInst::Create(RetType, Args);
+  return false;
+}
+
+/// ParseCatchEndBlock
+///   ::= 'catchendblock' unwind ('to' 'caller' | TypeAndValue)
+bool LLParser::ParseCatchEndBlock(Instruction *&Inst, PerFunctionState &PFS) {
+  if (ParseToken(lltok::kw_unwind, "expected 'unwind' in cleanupret"))
+    return true;
+
+  BasicBlock *UnwindBB = nullptr;
+  if (Lex.getKind() == lltok::kw_to) {
+    Lex.Lex();
+    if (Lex.getKind() == lltok::kw_caller) {
+      Lex.Lex();
+    } else {
+      return true;
+    }
+  } else {
+    if (ParseTypeAndBasicBlock(UnwindBB, PFS)) {
+      return true;
+    }
+  }
+
+  Inst = CatchEndBlockInst::Create(Context, UnwindBB);
+  return false;
+}
+
 //===----------------------------------------------------------------------===//
 // Binary Operators.
 //===----------------------------------------------------------------------===//
index 6e57b3e..2a39b6d 100644 (file)
@@ -381,6 +381,9 @@ namespace llvm {
                             bool IsMustTailCall = false,
                             bool InVarArgsFunc = false);
 
+    bool ParseExceptionArgs(SmallVectorImpl<Value *> &Args,
+                            PerFunctionState &PFS);
+
     // Constant Parsing.
     bool ParseValID(ValID &ID, PerFunctionState *PFS = nullptr);
     bool ParseGlobalValue(Type *Ty, Constant *&V);
@@ -441,6 +444,12 @@ namespace llvm {
     bool ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS);
     bool ParseInvoke(Instruction *&Inst, PerFunctionState &PFS);
     bool ParseResume(Instruction *&Inst, PerFunctionState &PFS);
+    bool ParseCleanupRet(Instruction *&Inst, PerFunctionState &PFS);
+    bool ParseCatchRet(Instruction *&Inst, PerFunctionState &PFS);
+    bool ParseCatchBlock(Instruction *&Inst, PerFunctionState &PFS);
+    bool ParseTerminateBlock(Instruction *&Inst, PerFunctionState &PFS);
+    bool ParseCleanupBlock(Instruction *&Inst, PerFunctionState &PFS);
+    bool ParseCatchEndBlock(Instruction *&Inst, PerFunctionState &PFS);
 
     bool ParseArithmetic(Instruction *&I, PerFunctionState &PFS, unsigned Opc,
                          unsigned OperandType);
index 2487d12..6e24224 100644 (file)
@@ -51,6 +51,7 @@ namespace lltok {
     kw_zeroinitializer,
     kw_undef, kw_null,
     kw_to,
+    kw_caller,
     kw_tail,
     kw_musttail,
     kw_target,
@@ -176,7 +177,8 @@ namespace lltok {
     kw_landingpad, kw_personality, kw_cleanup, kw_catch, kw_filter,
 
     kw_ret, kw_br, kw_switch, kw_indirectbr, kw_invoke, kw_resume,
-    kw_unreachable,
+    kw_unreachable, kw_cleanupret, kw_catchret, kw_catchblock,
+    kw_terminateblock, kw_cleanupblock, kw_catchendblock,
 
     kw_alloca, kw_load, kw_store, kw_fence, kw_cmpxchg, kw_atomicrmw,
     kw_getelementptr,
index 563e201..f13fc04 100644 (file)
@@ -3793,6 +3793,134 @@ std::error_code BitcodeReader::parseFunctionBody(Function *F) {
       }
       break;
     }
+    // CLEANUPRET: [] or [ty,val] or [bb#] or [ty,val,bb#]
+    case bitc::FUNC_CODE_INST_CLEANUPRET: {
+      if (Record.size() < 2)
+        return error("Invalid record");
+      unsigned Idx = 0;
+      bool HasReturnValue = !!Record[Idx++];
+      bool HasUnwindDest = !!Record[Idx++];
+      Value *RetVal = nullptr;
+      BasicBlock *UnwindDest = nullptr;
+
+      if (HasReturnValue && getValueTypePair(Record, Idx, NextValueNo, RetVal))
+        return error("Invalid record");
+      if (HasUnwindDest) {
+        if (Idx == Record.size())
+          return error("Invalid record");
+        UnwindDest = getBasicBlock(Record[Idx++]);
+        if (!UnwindDest)
+          return error("Invalid record");
+      }
+
+      if (Record.size() != Idx)
+        return error("Invalid record");
+
+      I = CleanupReturnInst::Create(Context, RetVal, UnwindDest);
+      InstructionList.push_back(I);
+      break;
+    }
+    case bitc::FUNC_CODE_INST_CATCHRET: { // CATCHRET: [bb#]
+      if (Record.size() != 1)
+        return error("Invalid record");
+      BasicBlock *BB = getBasicBlock(Record[0]);
+      if (!BB)
+        return error("Invalid record");
+      I = CatchReturnInst::Create(BB);
+      InstructionList.push_back(I);
+      break;
+    }
+    case bitc::FUNC_CODE_INST_CATCHBLOCK: { // CATCHBLOCK: [ty,bb#,bb#,num,(ty,val)*]
+      if (Record.size() < 4)
+        return error("Invalid record");
+      unsigned Idx = 0;
+      Type *Ty = getTypeByID(Record[Idx++]);
+      if (!Ty)
+        return error("Invalid record");
+      BasicBlock *NormalBB = getBasicBlock(Record[Idx++]);
+      if (!NormalBB)
+        return error("Invalid record");
+      BasicBlock *UnwindBB = getBasicBlock(Record[Idx++]);
+      if (!UnwindBB)
+        return error("Invalid record");
+      unsigned NumArgOperands = Record[Idx++];
+      SmallVector<Value *, 2> Args;
+      for (unsigned Op = 0; Op != NumArgOperands; ++Op) {
+        Value *Val;
+        if (getValueTypePair(Record, Idx, NextValueNo, Val))
+          return error("Invalid record");
+        Args.push_back(Val);
+      }
+      if (Record.size() != Idx)
+        return error("Invalid record");
+
+      I = CatchBlockInst::Create(Ty, NormalBB, UnwindBB, Args);
+      InstructionList.push_back(I);
+      break;
+    }
+    case bitc::FUNC_CODE_INST_TERMINATEBLOCK: { // TERMINATEBLOCK: [bb#,num,(ty,val)*]
+      if (Record.size() < 1)
+        return error("Invalid record");
+      unsigned Idx = 0;
+      bool HasUnwindDest = !!Record[Idx++];
+      BasicBlock *UnwindDest = nullptr;
+      if (HasUnwindDest) {
+        if (Idx == Record.size())
+          return error("Invalid record");
+        UnwindDest = getBasicBlock(Record[Idx++]);
+        if (!UnwindDest)
+          return error("Invalid record");
+      }
+      unsigned NumArgOperands = Record[Idx++];
+      SmallVector<Value *, 2> Args;
+      for (unsigned Op = 0; Op != NumArgOperands; ++Op) {
+        Value *Val;
+        if (getValueTypePair(Record, Idx, NextValueNo, Val))
+          return error("Invalid record");
+        Args.push_back(Val);
+      }
+      if (Record.size() != Idx)
+        return error("Invalid record");
+
+      I = TerminateBlockInst::Create(Context, UnwindDest, Args);
+      InstructionList.push_back(I);
+      break;
+    }
+    case bitc::FUNC_CODE_INST_CLEANUPBLOCK: { // CLEANUPBLOCK: [ty, num,(ty,val)*]
+      if (Record.size() < 2)
+        return error("Invalid record");
+      unsigned Idx = 0;
+      Type *Ty = getTypeByID(Record[Idx++]);
+      if (!Ty)
+        return error("Invalid record");
+      unsigned NumArgOperands = Record[Idx++];
+      SmallVector<Value *, 2> Args;
+      for (unsigned Op = 0; Op != NumArgOperands; ++Op) {
+        Value *Val;
+        if (getValueTypePair(Record, Idx, NextValueNo, Val))
+          return error("Invalid record");
+        Args.push_back(Val);
+      }
+      if (Record.size() != Idx)
+        return error("Invalid record");
+
+      I = CleanupBlockInst::Create(Ty, Args);
+      InstructionList.push_back(I);
+      break;
+    }
+    case bitc::FUNC_CODE_INST_CATCHENDBLOCK: { // CATCHENDBLOCKINST: [bb#] or []
+      if (Record.size() > 1)
+        return error("Invalid record");
+      BasicBlock *BB = nullptr;
+      if (Record.size() == 1) {
+        BB = getBasicBlock(Record[0]);
+        if (!BB)
+          return error("Invalid record");
+      }
+      I = CatchEndBlockInst::Create(Context, BB);
+      InstructionList.push_back(I);
+      break;
+    }
     case bitc::FUNC_CODE_INST_SWITCH: { // SWITCH: [opty, op0, op1, ...]
       // Check magic
       if ((Record[0] >> 16) == SWITCH_INST_MAGIC) {
index 622f7ea..c1fd666 100644 (file)
@@ -1845,6 +1845,64 @@ static void WriteInstruction(const Instruction &I, unsigned InstID,
     Code = bitc::FUNC_CODE_INST_RESUME;
     PushValueAndType(I.getOperand(0), InstID, Vals, VE);
     break;
+  case Instruction::CleanupRet: {
+    Code = bitc::FUNC_CODE_INST_CLEANUPRET;
+    const auto &CRI = cast<CleanupReturnInst>(I);
+    Vals.push_back(CRI.hasReturnValue());
+    Vals.push_back(CRI.hasUnwindDest());
+    if (CRI.hasReturnValue())
+      PushValueAndType(CRI.getReturnValue(), InstID, Vals, VE);
+    if (CRI.hasUnwindDest())
+      Vals.push_back(VE.getValueID(CRI.getUnwindDest()));
+    break;
+  }
+  case Instruction::CatchRet: {
+    Code = bitc::FUNC_CODE_INST_CATCHRET;
+    const auto &CRI = cast<CatchReturnInst>(I);
+    Vals.push_back(VE.getValueID(CRI.getSuccessor()));
+    break;
+  }
+  case Instruction::CatchBlock: {
+    Code = bitc::FUNC_CODE_INST_CATCHBLOCK;
+    const auto &CBI = cast<CatchBlockInst>(I);
+    Vals.push_back(VE.getTypeID(CBI.getType()));
+    Vals.push_back(VE.getValueID(CBI.getNormalDest()));
+    Vals.push_back(VE.getValueID(CBI.getUnwindDest()));
+    unsigned NumArgOperands = CBI.getNumArgOperands();
+    Vals.push_back(NumArgOperands);
+    for (unsigned Op = 0; Op != NumArgOperands; ++Op)
+      PushValueAndType(CBI.getArgOperand(Op), InstID, Vals, VE);
+    break;
+  }
+  case Instruction::TerminateBlock: {
+    Code = bitc::FUNC_CODE_INST_TERMINATEBLOCK;
+    const auto &TBI = cast<TerminateBlockInst>(I);
+    Vals.push_back(TBI.hasUnwindDest());
+    if (TBI.hasUnwindDest())
+      Vals.push_back(VE.getValueID(TBI.getUnwindDest()));
+    unsigned NumArgOperands = TBI.getNumArgOperands();
+    Vals.push_back(NumArgOperands);
+    for (unsigned Op = 0; Op != NumArgOperands; ++Op)
+      PushValueAndType(TBI.getArgOperand(Op), InstID, Vals, VE);
+    break;
+  }
+  case Instruction::CleanupBlock: {
+    Code = bitc::FUNC_CODE_INST_CLEANUPBLOCK;
+    const auto &CBI = cast<CleanupBlockInst>(I);
+    Vals.push_back(VE.getTypeID(CBI.getType()));
+    unsigned NumOperands = CBI.getNumOperands();
+    Vals.push_back(NumOperands);
+    for (unsigned Op = 0; Op != NumOperands; ++Op)
+      PushValueAndType(CBI.getOperand(Op), InstID, Vals, VE);
+    break;
+  }
+  case Instruction::CatchEndBlock: {
+    Code = bitc::FUNC_CODE_INST_CATCHENDBLOCK;
+    const auto &CEBI = cast<CatchEndBlockInst>(I);
+    if (CEBI.hasUnwindDest())
+      Vals.push_back(VE.getValueID(CEBI.getUnwindDest()));
+    break;
+  }
   case Instruction::Unreachable:
     Code = bitc::FUNC_CODE_INST_UNREACHABLE;
     AbbrevToUse = FUNCTION_INST_UNREACHABLE_ABBREV;
index 2c3c0eb..05010ec 100644 (file)
@@ -1168,6 +1168,30 @@ SDValue SelectionDAGBuilder::getValueImpl(const Value *V) {
   llvm_unreachable("Can't get register for value!");
 }
 
+void SelectionDAGBuilder::visitCleanupRet(const CleanupReturnInst &I) {
+  report_fatal_error("visitCleanupRet not yet implemented!");
+}
+
+void SelectionDAGBuilder::visitCatchEndBlock(const CatchEndBlockInst &I) {
+  report_fatal_error("visitCatchEndBlock not yet implemented!");
+}
+
+void SelectionDAGBuilder::visitCatchRet(const CatchReturnInst &I) {
+  report_fatal_error("visitCatchRet not yet implemented!");
+}
+
+void SelectionDAGBuilder::visitCatchBlock(const CatchBlockInst &I) {
+  report_fatal_error("visitCatchBlock not yet implemented!");
+}
+
+void SelectionDAGBuilder::visitTerminateBlock(const TerminateBlockInst &TBI) {
+  report_fatal_error("visitTerminateBlock not yet implemented!");
+}
+
+void SelectionDAGBuilder::visitCleanupBlock(const CleanupBlockInst &TBI) {
+  report_fatal_error("visitCleanupBlock not yet implemented!");
+}
+
 void SelectionDAGBuilder::visitRet(const ReturnInst &I) {
   const TargetLowering &TLI = DAG.getTargetLoweringInfo();
   auto &DL = DAG.getDataLayout();
index 7006754..df85e23 100644 (file)
@@ -734,6 +734,12 @@ private:
   void visitSwitch(const SwitchInst &I);
   void visitIndirectBr(const IndirectBrInst &I);
   void visitUnreachable(const UnreachableInst &I);
+  void visitCleanupRet(const CleanupReturnInst &I);
+  void visitCatchEndBlock(const CatchEndBlockInst &I);
+  void visitCatchRet(const CatchReturnInst &I);
+  void visitCatchBlock(const CatchBlockInst &I);
+  void visitTerminateBlock(const TerminateBlockInst &TBI);
+  void visitCleanupBlock(const CleanupBlockInst &CBI);
 
   uint32_t getEdgeWeight(const MachineBasicBlock *Src,
                          const MachineBasicBlock *Dst) const;
index ecfd659..b8ddcfe 100644 (file)
@@ -1546,6 +1546,12 @@ int TargetLoweringBase::InstructionOpcodeToISD(unsigned Opcode) const {
   case Invoke:         return 0;
   case Resume:         return 0;
   case Unreachable:    return 0;
+  case CleanupRet:     return 0;
+  case CatchEndBlock:  return 0;
+  case CatchRet:       return 0;
+  case CatchBlock:     return 0;
+  case TerminateBlock: return 0;
+  case CleanupBlock:   return 0;
   case Add:            return ISD::ADD;
   case FAdd:           return ISD::FADD;
   case Sub:            return ISD::SUB;
index adc620d..a866828 100644 (file)
@@ -2848,8 +2848,66 @@ void AssemblyWriter::printInstruction(const Instruction &I) {
 
       writeOperand(LPI->getClause(i), true);
     }
+  } else if (const auto *CBI = dyn_cast<CatchBlockInst>(&I)) {
+    Out << ' ';
+    TypePrinter.print(I.getType(), Out);
+
+    Out << " [";
+    for (unsigned Op = 0, NumOps = CBI->getNumArgOperands(); Op < NumOps;
+         ++Op) {
+      if (Op > 0)
+        Out << ", ";
+      writeOperand(CBI->getArgOperand(Op), /*PrintType=*/true);
+    }
+    Out << "] to ";
+    writeOperand(CBI->getNormalDest(), /*PrintType=*/true);
+    Out << " unwind ";
+    writeOperand(CBI->getUnwindDest(), /*PrintType=*/true);
+  } else if (const auto *TBI = dyn_cast<TerminateBlockInst>(&I)) {
+    Out << " [";
+    for (unsigned Op = 0, NumOps = TBI->getNumArgOperands(); Op < NumOps;
+         ++Op) {
+      if (Op > 0)
+        Out << ", ";
+      writeOperand(TBI->getArgOperand(Op), /*PrintType=*/true);
+    }
+    Out << "] unwind ";
+    if (TBI->hasUnwindDest())
+      writeOperand(TBI->getUnwindDest(), /*PrintType=*/true);
+    else
+      Out << "to caller";
+  } else if (const auto *CBI = dyn_cast<CleanupBlockInst>(&I)) {
+    Out << ' ';
+    TypePrinter.print(I.getType(), Out);
+
+    Out << " [";
+    for (unsigned Op = 0, NumOps = CBI->getNumOperands(); Op < NumOps; ++Op) {
+      if (Op > 0)
+        Out << ", ";
+      writeOperand(CBI->getOperand(Op), /*PrintType=*/true);
+    }
+    Out << "]";
   } else if (isa<ReturnInst>(I) && !Operand) {
     Out << " void";
+  } else if (const auto *CRI = dyn_cast<CleanupReturnInst>(&I)) {
+    if (CRI->hasReturnValue()) {
+      Out << ' ';
+      writeOperand(CRI->getReturnValue(), /*PrintType=*/true);
+    } else {
+      Out << " void";
+    }
+
+    Out << " unwind ";
+    if (CRI->hasUnwindDest())
+      writeOperand(CRI->getUnwindDest(), /*PrintType=*/true);
+    else
+      Out << "to caller";
+  } else if (const auto *CEBI = dyn_cast<CatchEndBlockInst>(&I)) {
+    Out << " unwind ";
+    if (CEBI->hasUnwindDest())
+      writeOperand(CEBI->getUnwindDest(), /*PrintType=*/true);
+    else
+      Out << "to caller";
   } else if (const CallInst *CI = dyn_cast<CallInst>(&I)) {
     // Print the calling convention being used.
     if (CI->getCallingConv() != CallingConv::C) {
index 0a04494..658c5e2 100644 (file)
@@ -197,7 +197,7 @@ BasicBlock::iterator BasicBlock::getFirstInsertionPt() {
     return end();
 
   iterator InsertPt = FirstNonPHI;
-  if (isa<LandingPadInst>(InsertPt)) ++InsertPt;
+  if (InsertPt->isEHBlock()) ++InsertPt;
   return InsertPt;
 }
 
index c57ba16..124bf08 100644 (file)
@@ -196,6 +196,11 @@ const char *Instruction::getOpcodeName(unsigned OpCode) {
   case Invoke: return "invoke";
   case Resume: return "resume";
   case Unreachable: return "unreachable";
+  case CleanupRet: return "cleanupret";
+  case CatchEndBlock: return "catchendblock";
+  case CatchRet: return "catchret";
+  case CatchBlock: return "catchblock";
+  case TerminateBlock: return "terminateblock";
 
   // Standard binary operators...
   case Add: return "add";
@@ -256,6 +261,7 @@ const char *Instruction::getOpcodeName(unsigned OpCode) {
   case ExtractValue:   return "extractvalue";
   case InsertValue:    return "insertvalue";
   case LandingPad:     return "landingpad";
+  case CleanupBlock:   return "cleanupblock";
 
   default: return "<Invalid operator> ";
   }
@@ -407,6 +413,8 @@ bool Instruction::mayReadFromMemory() const {
   case Instruction::Fence: // FIXME: refine definition of mayReadFromMemory
   case Instruction::AtomicCmpXchg:
   case Instruction::AtomicRMW:
+  case Instruction::CatchRet:
+  case Instruction::TerminateBlock:
     return true;
   case Instruction::Call:
     return !cast<CallInst>(this)->doesNotAccessMemory();
@@ -427,6 +435,8 @@ bool Instruction::mayWriteToMemory() const {
   case Instruction::VAArg:
   case Instruction::AtomicCmpXchg:
   case Instruction::AtomicRMW:
+  case Instruction::CatchRet:
+  case Instruction::TerminateBlock:
     return true;
   case Instruction::Call:
     return !cast<CallInst>(this)->onlyReadsMemory();
@@ -455,6 +465,10 @@ bool Instruction::isAtomic() const {
 bool Instruction::mayThrow() const {
   if (const CallInst *CI = dyn_cast<CallInst>(this))
     return !CI->doesNotThrow();
+  if (const auto *CRI = dyn_cast<CleanupReturnInst>(this))
+    return CRI->unwindsToCaller();
+  if (const auto *CEBI = dyn_cast<CatchEndBlockInst>(this))
+    return CEBI->unwindsToCaller();
   return isa<ResumeInst>(this);
 }
 
index 86c921a..02cb120 100644 (file)
@@ -670,6 +670,303 @@ BasicBlock *ResumeInst::getSuccessorV(unsigned idx) const {
   llvm_unreachable("ResumeInst has no successors!");
 }
 
+//===----------------------------------------------------------------------===//
+//                        CleanupReturnInst Implementation
+//===----------------------------------------------------------------------===//
+
+CleanupReturnInst::CleanupReturnInst(const CleanupReturnInst &CRI)
+    : TerminatorInst(CRI.getType(), Instruction::CleanupRet,
+                     OperandTraits<CleanupReturnInst>::op_end(this) -
+                         CRI.getNumOperands(),
+                     CRI.getNumOperands()) {
+  SubclassOptionalData = CRI.SubclassOptionalData;
+  if (Value *RetVal = CRI.getReturnValue())
+    setReturnValue(RetVal);
+  if (BasicBlock *UnwindDest = CRI.getUnwindDest())
+    setUnwindDest(UnwindDest);
+}
+
+void CleanupReturnInst::init(Value *RetVal, BasicBlock *UnwindBB) {
+  SubclassOptionalData = 0;
+  if (UnwindBB)
+    setInstructionSubclassData(getSubclassDataFromInstruction() | 1);
+  if (RetVal)
+    setInstructionSubclassData(getSubclassDataFromInstruction() | 2);
+
+  if (UnwindBB)
+    setUnwindDest(UnwindBB);
+  if (RetVal)
+    setReturnValue(RetVal);
+}
+
+CleanupReturnInst::CleanupReturnInst(LLVMContext &C, Value *RetVal,
+                                     BasicBlock *UnwindBB, unsigned Values,
+                                     Instruction *InsertBefore)
+    : TerminatorInst(Type::getVoidTy(C), Instruction::CleanupRet,
+                     OperandTraits<CleanupReturnInst>::op_end(this) - Values,
+                     Values, InsertBefore) {
+  init(RetVal, UnwindBB);
+}
+
+CleanupReturnInst::CleanupReturnInst(LLVMContext &C, Value *RetVal,
+                                     BasicBlock *UnwindBB, unsigned Values,
+                                     BasicBlock *InsertAtEnd)
+    : TerminatorInst(Type::getVoidTy(C), Instruction::CleanupRet,
+                     OperandTraits<CleanupReturnInst>::op_end(this) - Values,
+                     Values, InsertAtEnd) {
+  init(RetVal, UnwindBB);
+}
+
+BasicBlock *CleanupReturnInst::getUnwindDest() const {
+  if (hasUnwindDest())
+    return cast<BasicBlock>(getOperand(getUnwindLabelOpIdx()));
+  return nullptr;
+}
+void CleanupReturnInst::setUnwindDest(BasicBlock *NewDest) {
+  assert(NewDest);
+  setOperand(getUnwindLabelOpIdx(), NewDest);
+}
+
+BasicBlock *CleanupReturnInst::getSuccessorV(unsigned Idx) const {
+  assert(Idx == 0);
+  return getUnwindDest();
+}
+unsigned CleanupReturnInst::getNumSuccessorsV() const {
+  return getNumSuccessors();
+}
+void CleanupReturnInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
+  assert(Idx == 0);
+  setUnwindDest(B);
+}
+
+//===----------------------------------------------------------------------===//
+//                        CatchEndBlockInst Implementation
+//===----------------------------------------------------------------------===//
+
+CatchEndBlockInst::CatchEndBlockInst(const CatchEndBlockInst &CRI)
+    : TerminatorInst(CRI.getType(), Instruction::CatchEndBlock,
+                     OperandTraits<CatchEndBlockInst>::op_end(this) -
+                         CRI.getNumOperands(),
+                     CRI.getNumOperands()) {
+  SubclassOptionalData = CRI.SubclassOptionalData;
+  if (BasicBlock *UnwindDest = CRI.getUnwindDest())
+    setUnwindDest(UnwindDest);
+}
+
+void CatchEndBlockInst::init(BasicBlock *UnwindBB) {
+  SubclassOptionalData = 0;
+  if (UnwindBB) {
+    setInstructionSubclassData(getSubclassDataFromInstruction() | 1);
+    setUnwindDest(UnwindBB);
+  }
+}
+
+CatchEndBlockInst::CatchEndBlockInst(LLVMContext &C, BasicBlock *UnwindBB,
+                                     unsigned Values, Instruction *InsertBefore)
+    : TerminatorInst(Type::getVoidTy(C), Instruction::CatchEndBlock,
+                     OperandTraits<CatchEndBlockInst>::op_end(this) - Values,
+                     Values, InsertBefore) {
+  init(UnwindBB);
+}
+
+CatchEndBlockInst::CatchEndBlockInst(LLVMContext &C, BasicBlock *UnwindBB,
+                                     unsigned Values, BasicBlock *InsertAtEnd)
+    : TerminatorInst(Type::getVoidTy(C), Instruction::CatchEndBlock,
+                     OperandTraits<CatchEndBlockInst>::op_end(this) - Values,
+                     Values, InsertAtEnd) {
+  init(UnwindBB);
+}
+
+BasicBlock *CatchEndBlockInst::getSuccessorV(unsigned Idx) const {
+  assert(Idx == 0);
+  return getUnwindDest();
+}
+unsigned CatchEndBlockInst::getNumSuccessorsV() const {
+  return getNumSuccessors();
+}
+void CatchEndBlockInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
+  assert(Idx == 0);
+  setUnwindDest(B);
+}
+
+//===----------------------------------------------------------------------===//
+//                        CatchReturnInst Implementation
+//===----------------------------------------------------------------------===//
+
+CatchReturnInst::CatchReturnInst(const CatchReturnInst &CRI)
+    : TerminatorInst(Type::getVoidTy(CRI.getContext()), Instruction::CatchRet,
+                     OperandTraits<CatchReturnInst>::op_end(this) -
+                         CRI.getNumOperands(),
+                     CRI.getNumOperands()) {
+  Op<0>() = CRI.Op<0>();
+}
+
+CatchReturnInst::CatchReturnInst(BasicBlock *BB, Instruction *InsertBefore)
+    : TerminatorInst(Type::getVoidTy(BB->getContext()), Instruction::CatchRet,
+                     OperandTraits<CatchReturnInst>::op_begin(this), 1,
+                     InsertBefore) {
+  Op<0>() = BB;
+}
+
+CatchReturnInst::CatchReturnInst(BasicBlock *BB, BasicBlock *InsertAtEnd)
+    : TerminatorInst(Type::getVoidTy(BB->getContext()), Instruction::CatchRet,
+                     OperandTraits<CatchReturnInst>::op_begin(this), 1,
+                     InsertAtEnd) {
+  Op<0>() = BB;
+}
+
+BasicBlock *CatchReturnInst::getSuccessorV(unsigned Idx) const {
+  assert(Idx == 0);
+  return getSuccessor();
+}
+unsigned CatchReturnInst::getNumSuccessorsV() const {
+  return getNumSuccessors();
+}
+void CatchReturnInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
+  assert(Idx == 0);
+  setSuccessor(B);
+}
+
+//===----------------------------------------------------------------------===//
+//                        CatchBlockInst Implementation
+//===----------------------------------------------------------------------===//
+void CatchBlockInst::init(BasicBlock *IfNormal, BasicBlock *IfException,
+                          ArrayRef<Value *> Args, const Twine &NameStr) {
+  assert(getNumOperands() == 2 + Args.size() && "NumOperands not set up?");
+  Op<-2>() = IfNormal;
+  Op<-1>() = IfException;
+  std::copy(Args.begin(), Args.end(), op_begin());
+  setName(NameStr);
+}
+
+CatchBlockInst::CatchBlockInst(const CatchBlockInst &CBI)
+    : TerminatorInst(CBI.getType(), Instruction::CatchBlock,
+                     OperandTraits<CatchBlockInst>::op_end(this) -
+                         CBI.getNumOperands(),
+                     CBI.getNumOperands()) {
+  std::copy(CBI.op_begin(), CBI.op_end(), op_begin());
+}
+
+CatchBlockInst::CatchBlockInst(Type *RetTy, BasicBlock *IfNormal,
+                               BasicBlock *IfException, ArrayRef<Value *> Args,
+                               unsigned Values, const Twine &NameStr,
+                               Instruction *InsertBefore)
+    : TerminatorInst(RetTy, Instruction::CatchBlock,
+                     OperandTraits<CatchBlockInst>::op_end(this) - Values,
+                     Values, InsertBefore) {
+  init(IfNormal, IfException, Args, NameStr);
+}
+
+CatchBlockInst::CatchBlockInst(Type *RetTy, BasicBlock *IfNormal,
+                               BasicBlock *IfException, ArrayRef<Value *> Args,
+                               unsigned Values, const Twine &NameStr,
+                               BasicBlock *InsertAtEnd)
+    : TerminatorInst(RetTy, Instruction::CatchBlock,
+                     OperandTraits<CatchBlockInst>::op_end(this) - Values,
+                     Values, InsertAtEnd) {
+  init(IfNormal, IfException, Args, NameStr);
+}
+
+BasicBlock *CatchBlockInst::getSuccessorV(unsigned Idx) const {
+  return getSuccessor(Idx);
+}
+unsigned CatchBlockInst::getNumSuccessorsV() const {
+  return getNumSuccessors();
+}
+void CatchBlockInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
+  return setSuccessor(Idx, B);
+}
+
+//===----------------------------------------------------------------------===//
+//                        TerminateBlockInst Implementation
+//===----------------------------------------------------------------------===//
+void TerminateBlockInst::init(BasicBlock *BB, ArrayRef<Value *> Args,
+                              const Twine &NameStr) {
+  SubclassOptionalData = 0;
+  if (BB)
+    setInstructionSubclassData(getSubclassDataFromInstruction() | 1);
+  if (BB)
+    Op<-1>() = BB;
+  std::copy(Args.begin(), Args.end(), op_begin());
+  setName(NameStr);
+}
+
+TerminateBlockInst::TerminateBlockInst(const TerminateBlockInst &TBI)
+    : TerminatorInst(TBI.getType(), Instruction::TerminateBlock,
+                     OperandTraits<TerminateBlockInst>::op_end(this) -
+                         TBI.getNumOperands(),
+                     TBI.getNumOperands()) {
+  SubclassOptionalData = TBI.SubclassOptionalData;
+  std::copy(TBI.op_begin(), TBI.op_end(), op_begin());
+}
+
+TerminateBlockInst::TerminateBlockInst(LLVMContext &C, BasicBlock *BB,
+                                       ArrayRef<Value *> Args, unsigned Values,
+                                       const Twine &NameStr,
+                                       Instruction *InsertBefore)
+    : TerminatorInst(Type::getVoidTy(C), Instruction::TerminateBlock,
+                     OperandTraits<TerminateBlockInst>::op_end(this) - Values,
+                     Values, InsertBefore) {
+  init(BB, Args, NameStr);
+}
+
+TerminateBlockInst::TerminateBlockInst(LLVMContext &C, BasicBlock *BB,
+                                       ArrayRef<Value *> Args, unsigned Values,
+                                       const Twine &NameStr,
+                                       BasicBlock *InsertAtEnd)
+    : TerminatorInst(Type::getVoidTy(C), Instruction::TerminateBlock,
+                     OperandTraits<TerminateBlockInst>::op_end(this) - Values,
+                     Values, InsertAtEnd) {
+  init(BB, Args, NameStr);
+}
+
+BasicBlock *TerminateBlockInst::getSuccessorV(unsigned Idx) const {
+  assert(Idx == 0);
+  return getUnwindDest();
+}
+unsigned TerminateBlockInst::getNumSuccessorsV() const {
+  return getNumSuccessors();
+}
+void TerminateBlockInst::setSuccessorV(unsigned Idx, BasicBlock *B) {
+  assert(Idx == 0);
+  return setUnwindDest(B);
+}
+
+//===----------------------------------------------------------------------===//
+//                        CleanupBlockInst Implementation
+//===----------------------------------------------------------------------===//
+void CleanupBlockInst::init(ArrayRef<Value *> Args, const Twine &NameStr) {
+  assert(getNumOperands() == Args.size() && "NumOperands not set up?");
+  std::copy(Args.begin(), Args.end(), op_begin());
+  setName(NameStr);
+}
+
+CleanupBlockInst::CleanupBlockInst(const CleanupBlockInst &CBI)
+    : Instruction(CBI.getType(), Instruction::CleanupBlock,
+                  OperandTraits<CleanupBlockInst>::op_end(this) -
+                      CBI.getNumOperands(),
+                  CBI.getNumOperands()) {
+  std::copy(CBI.op_begin(), CBI.op_end(), op_begin());
+}
+
+CleanupBlockInst::CleanupBlockInst(Type *RetTy, ArrayRef<Value *> Args,
+                                   const Twine &NameStr,
+                                   Instruction *InsertBefore)
+    : Instruction(RetTy, Instruction::CleanupBlock,
+                  OperandTraits<CleanupBlockInst>::op_end(this) - Args.size(),
+                  Args.size(), InsertBefore) {
+  init(Args, NameStr);
+}
+
+CleanupBlockInst::CleanupBlockInst(Type *RetTy, ArrayRef<Value *> Args,
+                                   const Twine &NameStr,
+                                   BasicBlock *InsertAtEnd)
+    : Instruction(RetTy, Instruction::CleanupBlock,
+                  OperandTraits<CleanupBlockInst>::op_end(this) - Args.size(),
+                  Args.size(), InsertAtEnd) {
+  init(Args, NameStr);
+}
+
 //===----------------------------------------------------------------------===//
 //                      UnreachableInst Implementation
 //===----------------------------------------------------------------------===//
@@ -3618,6 +3915,30 @@ InvokeInst *InvokeInst::cloneImpl() const {
 
 ResumeInst *ResumeInst::cloneImpl() const { return new (1) ResumeInst(*this); }
 
+CleanupReturnInst *CleanupReturnInst::cloneImpl() const {
+  return new (getNumOperands()) CleanupReturnInst(*this);
+}
+
+CatchEndBlockInst *CatchEndBlockInst::cloneImpl() const {
+  return new (getNumOperands()) CatchEndBlockInst(*this);
+}
+
+CatchReturnInst *CatchReturnInst::cloneImpl() const {
+  return new (1) CatchReturnInst(*this);
+}
+
+CatchBlockInst *CatchBlockInst::cloneImpl() const {
+  return new (getNumOperands()) CatchBlockInst(*this);
+}
+
+TerminateBlockInst *TerminateBlockInst::cloneImpl() const {
+  return new (getNumOperands()) TerminateBlockInst(*this);
+}
+
+CleanupBlockInst *CleanupBlockInst::cloneImpl() const {
+  return new (getNumOperands()) CleanupBlockInst(*this);
+}
+
 UnreachableInst *UnreachableInst::cloneImpl() const {
   LLVMContext &Context = getContext();
   return new UnreachableInst(Context);
index 647920f..b6df708 100644 (file)
@@ -380,6 +380,10 @@ private:
   void visitExtractValueInst(ExtractValueInst &EVI);
   void visitInsertValueInst(InsertValueInst &IVI);
   void visitLandingPadInst(LandingPadInst &LPI);
+  void visitCatchBlockInst(CatchBlockInst &CBI);
+  void visitCatchEndBlockInst(CatchEndBlockInst &CEBI);
+  void visitCleanupBlockInst(CleanupBlockInst &CBI);
+  void visitTerminateBlockInst(TerminateBlockInst &TBI);
 
   void VerifyCallSite(CallSite CS);
   void verifyMustTailCall(CallInst &CI);
@@ -2404,10 +2408,12 @@ void Verifier::visitCallInst(CallInst &CI) {
 void Verifier::visitInvokeInst(InvokeInst &II) {
   VerifyCallSite(&II);
 
-  // Verify that there is a landingpad instruction as the first non-PHI
+  // Verify that there is an exception block instruction is the first non-PHI
   // instruction of the 'unwind' destination.
-  Assert(II.getUnwindDest()->isLandingPad(),
-         "The unwind destination does not have a landingpad instruction!", &II);
+  Assert(
+      II.getUnwindDest()->isEHBlock(),
+      "The unwind destination does not have an exception handling instruction!",
+      &II);
 
   visitTerminatorInst(II);
 }
@@ -2818,6 +2824,72 @@ void Verifier::visitLandingPadInst(LandingPadInst &LPI) {
   visitInstruction(LPI);
 }
 
+void Verifier::visitCatchBlockInst(CatchBlockInst &CBI) {
+  BasicBlock *BB = CBI.getParent();
+
+  Function *F = BB->getParent();
+  Assert(F->hasPersonalityFn(),
+         "CatchBlockInst needs to be in a function with a personality.", &CBI);
+
+  // The catchblock instruction must be the first non-PHI instruction in the
+  // block.
+  Assert(BB->getFirstNonPHI() == &CBI,
+         "CatchBlockInst not the first non-PHI instruction in the block.",
+         &CBI);
+
+  visitTerminatorInst(CBI);
+}
+
+void Verifier::visitCatchEndBlockInst(CatchEndBlockInst &CEBI) {
+  BasicBlock *BB = CEBI.getParent();
+
+  Function *F = BB->getParent();
+  Assert(F->hasPersonalityFn(),
+         "CatchEndBlockInst needs to be in a function with a personality.",
+         &CEBI);
+
+  // The catchendblock instruction must be the first non-PHI instruction in the
+  // block.
+  Assert(BB->getFirstNonPHI() == &CEBI,
+         "CatchEndBlockInst not the first non-PHI instruction in the block.",
+         &CEBI);
+
+  visitTerminatorInst(CEBI);
+}
+
+void Verifier::visitCleanupBlockInst(CleanupBlockInst &CBI) {
+  BasicBlock *BB = CBI.getParent();
+
+  Function *F = BB->getParent();
+  Assert(F->hasPersonalityFn(),
+         "CleanupBlockInst needs to be in a function with a personality.", &CBI);
+
+  // The cleanupblock instruction must be the first non-PHI instruction in the
+  // block.
+  Assert(BB->getFirstNonPHI() == &CBI,
+         "CleanupBlockInst not the first non-PHI instruction in the block.",
+         &CBI);
+
+  visitInstruction(CBI);
+}
+
+void Verifier::visitTerminateBlockInst(TerminateBlockInst &TBI) {
+  BasicBlock *BB = TBI.getParent();
+
+  Function *F = BB->getParent();
+  Assert(F->hasPersonalityFn(),
+         "TerminateBlockInst needs to be in a function with a personality.",
+         &TBI);
+
+  // The terminateblock instruction must be the first non-PHI instruction in the
+  // block.
+  Assert(BB->getFirstNonPHI() == &TBI,
+         "TerminateBlockInst not the first non-PHI instruction in the block.",
+         &TBI);
+
+  visitTerminatorInst(TBI);
+}
+
 void Verifier::verifyDominatesUse(Instruction &I, unsigned i) {
   Instruction *Op = cast<Instruction>(I.getOperand(i));
   // If the we have an invalid invoke, don't try to compute the dominance.
index 286a563..bcc39ef 100644 (file)
@@ -2653,6 +2653,26 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
     setOrigin(&I, getCleanOrigin());
   }
 
+  void visitCleanupBlockInst(CleanupBlockInst &I) {
+    setShadow(&I, getCleanShadow(&I));
+    setOrigin(&I, getCleanOrigin());
+  }
+
+  void visitCatchBlock(CatchBlockInst &I) {
+    setShadow(&I, getCleanShadow(&I));
+    setOrigin(&I, getCleanOrigin());
+  }
+
+  void visitTerminateBlock(TerminateBlockInst &I) {
+    setShadow(&I, getCleanShadow(&I));
+    setOrigin(&I, getCleanOrigin());
+  }
+
+  void visitCatchEndBlockInst(CatchEndBlockInst &I) {
+    setShadow(&I, getCleanShadow(&I));
+    setOrigin(&I, getCleanOrigin());
+  }
+
   void visitGetElementPtrInst(GetElementPtrInst &I) {
     handleShadowOr(I);
   }
@@ -2696,6 +2716,16 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
     // Nothing to do here.
   }
 
+  void visitCleanupReturnInst(CleanupReturnInst &CRI) {
+    DEBUG(dbgs() << "CleanupReturn: " << CRI << "\n");
+    // Nothing to do here.
+  }
+
+  void visitCatchReturnInst(CatchReturnInst &CRI) {
+    DEBUG(dbgs() << "CatchReturn: " << CRI << "\n");
+    // Nothing to do here.
+  }
+
   void visitInstruction(Instruction &I) {
     // Everything else: stop propagating and check for poisoned shadow.
     if (ClDumpStrictInstructions)
index d6fc916..0c707c4 100644 (file)
@@ -58,8 +58,8 @@ bool ADCE::runOnFunction(Function& F) {
 
   // Collect the set of "root" instructions that are known live.
   for (Instruction &I : inst_range(F)) {
-    if (isa<TerminatorInst>(I) || isa<DbgInfoIntrinsic>(I) ||
-        isa<LandingPadInst>(I) || I.mayHaveSideEffects()) {
+    if (isa<TerminatorInst>(I) || isa<DbgInfoIntrinsic>(I) || I.isEHBlock() ||
+        I.mayHaveSideEffects()) {
       Alive.insert(&I);
       Worklist.push_back(&I);
     }
index 09c605e..e484069 100644 (file)
@@ -77,8 +77,8 @@ INITIALIZE_PASS_END(BDCE, "bdce", "Bit-Tracking Dead Code Elimination",
                     false, false)
 
 static bool isAlwaysLive(Instruction *I) {
-  return isa<TerminatorInst>(I) || isa<DbgInfoIntrinsic>(I) ||
-         isa<LandingPadInst>(I) || I->mayHaveSideEffects();
+  return isa<TerminatorInst>(I) || isa<DbgInfoIntrinsic>(I) || I->isEHBlock() ||
+         I->mayHaveSideEffects();
 }
 
 void BDCE::determineLiveOperandBits(const Instruction *UserI,
index 1130d22..e845a7f 100644 (file)
@@ -669,7 +669,8 @@ bool JumpThreading::ProcessBlock(BasicBlock *BB) {
   // because now the condition in this block can be threaded through
   // predecessors of our predecessor block.
   if (BasicBlock *SinglePred = BB->getSinglePredecessor()) {
-    if (SinglePred->getTerminator()->getNumSuccessors() == 1 &&
+    const TerminatorInst *TI = SinglePred->getTerminator();
+    if (!TI->isExceptional() && TI->getNumSuccessors() == 1 &&
         SinglePred != BB && !hasAddressTakenAndUsed(BB)) {
       // If SinglePred was a loop header, BB becomes one.
       if (LoopHeaders.erase(SinglePred))
index 4d3a708..c625b0f 100644 (file)
@@ -539,9 +539,9 @@ void SCCPSolver::getFeasibleSuccessors(TerminatorInst &TI,
     return;
   }
 
-  if (isa<InvokeInst>(TI)) {
-    // Invoke instructions successors are always executable.
-    Succs[0] = Succs[1] = true;
+  // Unwinding instructions successors are always executable.
+  if (TI.isExceptional()) {
+    Succs.assign(TI.getNumSuccessors(), true);
     return;
   }
 
@@ -605,8 +605,8 @@ bool SCCPSolver::isEdgeFeasible(BasicBlock *From, BasicBlock *To) {
     return BI->getSuccessor(CI->isZero()) == To;
   }
 
-  // Invoke instructions successors are always executable.
-  if (isa<InvokeInst>(TI))
+  // Unwinding instructions successors are always executable.
+  if (TI->isExceptional())
     return true;
 
   if (SwitchInst *SI = dyn_cast<SwitchInst>(TI)) {
index 53471de..c761934 100644 (file)
@@ -119,8 +119,9 @@ bool llvm::MergeBlockIntoPredecessor(BasicBlock *BB, DominatorTree *DT,
 
   // Don't break self-loops.
   if (PredBB == BB) return false;
-  // Don't break invokes.
-  if (isa<InvokeInst>(PredBB->getTerminator())) return false;
+  // Don't break unwinding instructions.
+  if (PredBB->getTerminator()->isExceptional())
+    return false;
 
   succ_iterator SI(succ_begin(PredBB)), SE(succ_end(PredBB));
   BasicBlock *OnlySucc = BB;
index 5608557..e1788c9 100644 (file)
@@ -283,8 +283,9 @@ bool llvm::isInstructionTriviallyDead(Instruction *I,
                                       const TargetLibraryInfo *TLI) {
   if (!I->use_empty() || isa<TerminatorInst>(I)) return false;
 
-  // We don't want the landingpad instruction removed by anything this general.
-  if (isa<LandingPadInst>(I))
+  // We don't want the landingpad-like instructions removed by anything this
+  // general.
+  if (I->isEHBlock())
     return false;
 
   // We don't want debug info removed by anything this general, unless
index 7568ecf..3fd3e08 100644 (file)
@@ -25,3 +25,72 @@ lpad:                                             ; preds = %entry
 declare void @_Z3quxv() optsize
 
 declare i32 @__gxx_personality_v0(...)
+
+define void @cleanupret0() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  cleanupret i8 0 unwind label %bb
+bb:
+  ret void
+}
+
+define void @cleanupret1() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  cleanupret void unwind label %bb
+bb:
+  ret void
+}
+
+define void @cleanupret2() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  cleanupret i8 0 unwind to caller
+}
+
+define void @cleanupret3() personality i32 (...)* @__gxx_personality_v0 {
+  cleanupret void unwind to caller
+}
+
+define void @catchret() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  br label %bb
+bb:
+  catchret label %bb
+}
+
+define i8 @catchblock() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  %cbv = catchblock i8 [i7 4] to label %bb unwind label %bb2
+bb:
+  ret i8 %cbv
+bb2:
+  ret i8 42
+}
+
+define void @terminateblock0() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  terminateblock [i7 4] unwind label %bb
+bb:
+  ret void
+}
+
+define void @terminateblock1() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  terminateblock [i7 4] unwind to caller
+}
+
+define void @cleanupblock() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  cleanupblock void [i7 4]
+  ret void
+}
+
+define void @catchendblock0() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  catchendblock unwind label %bb
+bb:
+  ret void
+}
+
+define void @catchendblock1() personality i32 (...)* @__gxx_personality_v0 {
+entry:
+  catchendblock unwind to caller
+}
index b56b72f..8fa9923 100644 (file)
@@ -2,7 +2,7 @@
 
 ; PR1042
 define i32 @foo() {
-; CHECK: The unwind destination does not have a landingpad instruction
+; CHECK: The unwind destination does not have an exception handling instruction
        %A = invoke i32 @foo( )
                        to label %L unwind label %L             ; <i32> [#uses=1]
 L:             ; preds = %0, %0
@@ -18,7 +18,7 @@ L1:           ; preds = %0
 L2:            ; preds = %0
        br label %L
 L:             ; preds = %L2, %L1, %L1
-; CHECK: The unwind destination does not have a landingpad instruction
+; CHECK: The unwind destination does not have an exception handling instruction
        ret i32 %A
 }
 
index 7672951..d94a704 100644 (file)
@@ -241,6 +241,11 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
       STRINGIFY_CODE(FUNC_CODE, INST_SWITCH)
       STRINGIFY_CODE(FUNC_CODE, INST_INVOKE)
       STRINGIFY_CODE(FUNC_CODE, INST_UNREACHABLE)
+      STRINGIFY_CODE(FUNC_CODE, INST_CLEANUPRET)
+      STRINGIFY_CODE(FUNC_CODE, INST_CATCHRET)
+      STRINGIFY_CODE(FUNC_CODE, INST_CATCHBLOCK)
+      STRINGIFY_CODE(FUNC_CODE, INST_CATCHENDBLOCK)
+      STRINGIFY_CODE(FUNC_CODE, INST_TERMINATEBLOCK)
       STRINGIFY_CODE(FUNC_CODE, INST_PHI)
       STRINGIFY_CODE(FUNC_CODE, INST_ALLOCA)
       STRINGIFY_CODE(FUNC_CODE, INST_LOAD)