Merge with LLVM upstream 2011/10/20 (r142530)

Conflicts:
	lib/Support/Unix/Host.inc

Change-Id: Idc00db3b63912dca6348bddd9f8a1af2a8d5d147

1 files changed, 25 insertions, 5 deletions

diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index 5b3d3ea62a..cae38f3470 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -32,6 +32,7 @@ namespace llvm {
 template <typename T> class SmallVectorImpl;
 class AliasAnalysis;
 class TargetInstrInfo;
+class TargetRegisterClass;
 class TargetRegisterInfo;
 class MachineFunction;
 class MachineMemOperand;
@@ -58,8 +59,6 @@ public:
   };
 private:
   const MCInstrDesc *MCID;              // Instruction descriptor.
-  uint16_t NumImplicitOps;              // Number of implicit operands (which
-                                        // are determined at construction time).
 
   uint8_t Flags;                        // Various bits of additional
                                         // information about machine
@@ -78,9 +77,6 @@ private:
   MachineBasicBlock *Parent;            // Pointer to the owning basic block.
   DebugLoc debugLoc;                    // Source line information.
 
-  // OperandComplete - Return true if it's illegal to add a new operand
-  bool OperandsComplete() const;
-
   MachineInstr(const MachineInstr&);   // DO NOT IMPLEMENT
   void operator=(const MachineInstr&); // DO NOT IMPLEMENT
 
@@ -393,6 +389,30 @@ public:
   /// none is found.
   int findFirstPredOperandIdx() const;
 
+  /// findInlineAsmFlagIdx() - Find the index of the flag word operand that
+  /// corresponds to operand OpIdx on an inline asm instruction.  Returns -1 if
+  /// getOperand(OpIdx) does not belong to an inline asm operand group.
+  ///
+  /// If GroupNo is not NULL, it will receive the number of the operand group
+  /// containing OpIdx.
+  ///
+  /// The flag operand is an immediate that can be decoded with methods like
+  /// InlineAsm::hasRegClassConstraint().
+  ///
+  int findInlineAsmFlagIdx(unsigned OpIdx, unsigned *GroupNo = 0) const;
+
+  /// getRegClassConstraint - Compute the static register class constraint for
+  /// operand OpIdx.  For normal instructions, this is derived from the
+  /// MCInstrDesc.  For inline assembly it is derived from the flag words.
+  ///
+  /// Returns NULL if the static register classs constraint cannot be
+  /// determined.
+  ///
+  const TargetRegisterClass*
+  getRegClassConstraint(unsigned OpIdx,
+                        const TargetInstrInfo *TII,
+                        const TargetRegisterInfo *TRI) const;
+
   /// isRegTiedToUseOperand - Given the index of a register def operand,
   /// check if the register def is tied to a source operand, due to either
   /// two-address elimination or inline assembly constraints. Returns the