vendor/llvm/llvm-release_39-r276489

1 files changed, 44 insertions, 17 deletions

diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index 05c9a9e0b079..8f1cb9b6f659 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -16,16 +16,13 @@
 #ifndef LLVM_CODEGEN_MACHINEINSTR_H
 #define LLVM_CODEGEN_MACHINEINSTR_H
 
-#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMapInfo.h"
 #include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/ilist.h"
 #include "llvm/ADT/ilist_node.h"
 #include "llvm/ADT/iterator_range.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/CodeGen/MachineOperand.h"
-#include "llvm/IR/DebugInfo.h"
 #include "llvm/IR/DebugLoc.h"
 #include "llvm/IR/InlineAsm.h"
 #include "llvm/MC/MCInstrDesc.h"
@@ -34,10 +31,17 @@
 
 namespace llvm {
 
+class StringRef;
+template <typename T> class ArrayRef;
 template <typename T> class SmallVectorImpl;
+class DILocalVariable;
+class DIExpression;
 class TargetInstrInfo;
 class TargetRegisterClass;
 class TargetRegisterInfo;
+#ifdef LLVM_BUILD_GLOBAL_ISEL
+class Type;
+#endif
 class MachineFunction;
 class MachineMemOperand;
 
@@ -102,6 +106,13 @@ private:
 
   DebugLoc debugLoc;                    // Source line information.
 
+#ifdef LLVM_BUILD_GLOBAL_ISEL
+  /// Type of the instruction in case of a generic opcode.
+  /// \invariant This must be nullptr is getOpcode() is not
+  /// in the range of generic opcodes.
+  Type *Ty;
+#endif
+
   MachineInstr(const MachineInstr&) = delete;
   void operator=(const MachineInstr&) = delete;
   // Use MachineFunction::DeleteMachineInstr() instead.
@@ -176,6 +187,11 @@ public:
     Flags &= ~((uint8_t)Flag);
   }
 
+  /// Set the type of the instruction.
+  /// \pre getOpcode() is in the range of the generic opcodes.
+  void setType(Type *Ty);
+  Type *getType() const;
+
   /// Return true if MI is in a bundle (but not the first MI in a bundle).
   ///
   /// A bundle looks like this before it's finalized:
@@ -248,17 +264,11 @@ public:
 
   /// Return the debug variable referenced by
   /// this DBG_VALUE instruction.
-  const DILocalVariable *getDebugVariable() const {
-    assert(isDebugValue() && "not a DBG_VALUE");
-    return cast<DILocalVariable>(getOperand(2).getMetadata());
-  }
+  const DILocalVariable *getDebugVariable() const;
 
   /// Return the complex address expression referenced by
   /// this DBG_VALUE instruction.
-  const DIExpression *getDebugExpression() const {
-    assert(isDebugValue() && "not a DBG_VALUE");
-    return cast<DIExpression>(getOperand(3).getMetadata());
-  }
+  const DIExpression *getDebugExpression() const;
 
   /// Emit an error referring to the source location of this instruction.
   /// This should only be used for inline assembly that is somehow
@@ -343,6 +353,14 @@ public:
     return make_range(operands_begin() + getDesc().getNumDefs(),
                       operands_end());
   }
+  iterator_range<mop_iterator> explicit_uses() {
+    return make_range(operands_begin() + getDesc().getNumDefs(),
+                      operands_begin() + getNumExplicitOperands() );
+  }
+  iterator_range<const_mop_iterator> explicit_uses() const {
+    return make_range(operands_begin() + getDesc().getNumDefs(),
+                      operands_begin() + getNumExplicitOperands() );
+  }
 
   /// Returns the number of the operand iterator \p I points to.
   unsigned getOperandNo(const_mop_iterator I) const {
@@ -508,6 +526,11 @@ public:
   /// Convergent instructions can not be made control-dependent on any
   /// additional values.
   bool isConvergent(QueryType Type = AnyInBundle) const {
+    if (isInlineAsm()) {
+      unsigned ExtraInfo = getOperand(InlineAsm::MIOp_ExtraInfo).getImm();
+      if (ExtraInfo & InlineAsm::Extra_IsConvergent)
+        return true;
+    }
     return hasProperty(MCID::Convergent, Type);
   }
 
@@ -713,7 +736,7 @@ public:
 
   /// Return true if this instruction is identical to (same
   /// opcode and same operands as) the specified instruction.
-  bool isIdenticalTo(const MachineInstr *Other,
+  bool isIdenticalTo(const MachineInstr &Other,
                      MICheckType Check = CheckDefs) const;
 
   /// Unlink 'this' from the containing basic block, and return it without
@@ -899,6 +922,10 @@ public:
     return findRegisterDefOperandIdx(Reg, true, false, TRI) != -1;
   }
 
+  /// Returns true if the MachineInstr has an implicit-use operand of exactly
+  /// the given register (not considering sub/super-registers).
+  bool hasRegisterImplicitUseOperand(unsigned Reg) const;
+
   /// Returns the operand index that is a use of the specific register or -1
   /// if it is not found. It further tightens the search criteria to a use
   /// that kills the register if isKill is true.
@@ -1054,8 +1081,8 @@ public:
                          const TargetRegisterInfo *RegInfo,
                          bool AddIfNotFound = false);
 
-  /// Clear all kill flags affecting Reg.  If RegInfo is
-  /// provided, this includes super-register kills.
+  /// Clear all kill flags affecting Reg.  If RegInfo is provided, this includes
+  /// all aliasing registers.
   void clearRegisterKills(unsigned Reg, const TargetRegisterInfo *RegInfo);
 
   /// We have determined MI defined a register without a use.
@@ -1125,7 +1152,7 @@ public:
 
   /// Copy implicit register operands from specified
   /// instruction to this instruction.
-  void copyImplicitOps(MachineFunction &MF, const MachineInstr *MI);
+  void copyImplicitOps(MachineFunction &MF, const MachineInstr &MI);
 
   //
   // Debugging support
@@ -1168,7 +1195,7 @@ public:
     assert(debugLoc.hasTrivialDestructor() && "Expected trivial destructor");
   }
 
-  /// Erase an operand  from an instruction, leaving it with one
+  /// Erase an operand from an instruction, leaving it with one
   /// fewer operand than it started with.
   void RemoveOperand(unsigned i);
 
@@ -1268,7 +1295,7 @@ struct MachineInstrExpressionTrait : DenseMapInfo<MachineInstr*> {
     if (RHS == getEmptyKey() || RHS == getTombstoneKey() ||
         LHS == getEmptyKey() || LHS == getTombstoneKey())
       return LHS == RHS;
-    return LHS->isIdenticalTo(RHS, MachineInstr::IgnoreVRegDefs);
+    return LHS->isIdenticalTo(*RHS, MachineInstr::IgnoreVRegDefs);
   }
 };