X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FTargetInstrInfo.cpp;h=f1d1d07c38aef048793903f90f9516679825148c;hb=138c2b4e8a4480f4d956980b24c504c27e18cfc1;hp=62818d0cae9de5b91a98978c9d07f9131f6eff49;hpb=c8141dfc7f983cb04e65d8acd6bcbdc8e4b8a0ae;p=oota-llvm.git

diff --git a/lib/Target/TargetInstrInfo.cpp b/lib/Target/TargetInstrInfo.cpp
index 62818d0cae9..f1d1d07c38a 100644
--- a/lib/Target/TargetInstrInfo.cpp
+++ b/lib/Target/TargetInstrInfo.cpp
@@ -12,139 +12,70 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetInstrItineraries.h"
 #include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/CodeGen/SelectionDAGNodes.h"
 #include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCInstrItineraries.h"
 #include "llvm/Support/ErrorHandling.h"
+#include <cctype>
 using namespace llvm;
 
-//===----------------------------------------------------------------------===//
-//  TargetOperandInfo
-//===----------------------------------------------------------------------===//
-
-/// getRegClass - Get the register class for the operand, handling resolution
-/// of "symbolic" pointer register classes etc.  If this is not a register
-/// operand, this returns null.
-const TargetRegisterClass *
-TargetOperandInfo::getRegClass(const TargetRegisterInfo *TRI) const {
-  if (isLookupPtrRegClass())
-    return TRI->getPointerRegClass(RegClass);
-  // Instructions like INSERT_SUBREG do not have fixed register classes.
-  if (RegClass < 0)
-    return 0;
-  // Otherwise just look it up normally.
-  return TRI->getRegClass(RegClass);
-}
-
 //===----------------------------------------------------------------------===//
 //  TargetInstrInfo
-//===----------------------------------------------------------------------===//
-
-TargetInstrInfo::TargetInstrInfo(const TargetInstrDesc* Desc,
-                                 unsigned numOpcodes)
-  : Descriptors(Desc), NumOpcodes(numOpcodes) {
-}
+//
+// Methods that depend on CodeGen are implemented in
+// TargetInstrInfoImpl.cpp. Invoking them without linking libCodeGen raises a
+// link error.
+// ===----------------------------------------------------------------------===//
 
 TargetInstrInfo::~TargetInstrInfo() {
 }
 
-unsigned
-TargetInstrInfo::getNumMicroOps(const MachineInstr *MI,
-                                const InstrItineraryData *ItinData) const {
-  if (!ItinData || ItinData->isEmpty())
-    return 1;
-
-  unsigned Class = MI->getDesc().getSchedClass();
-  unsigned UOps = ItinData->Itineraries[Class].NumMicroOps;
-  if (UOps)
-    return UOps;
-
-  // The # of u-ops is dynamically determined. The specific target should
-  // override this function to return the right number.
-  return 1;
-}
-
-int
-TargetInstrInfo::getOperandLatency(const InstrItineraryData *ItinData,
-                             const MachineInstr *DefMI, unsigned DefIdx,
-                             const MachineInstr *UseMI, unsigned UseIdx) const {
-  if (!ItinData || ItinData->isEmpty())
-    return -1;
-
-  unsigned DefClass = DefMI->getDesc().getSchedClass();
-  unsigned UseClass = UseMI->getDesc().getSchedClass();
-  return ItinData->getOperandLatency(DefClass, DefIdx, UseClass, UseIdx);
-}
-
-int
-TargetInstrInfo::getOperandLatency(const InstrItineraryData *ItinData,
-                                   SDNode *DefNode, unsigned DefIdx,
-                                   SDNode *UseNode, unsigned UseIdx) const {
-  if (!ItinData || ItinData->isEmpty())
-    return -1;
+const TargetRegisterClass*
+TargetInstrInfo::getRegClass(const MCInstrDesc &MCID, unsigned OpNum,
+                             const TargetRegisterInfo *TRI,
+                             const MachineFunction &MF) const {
+  if (OpNum >= MCID.getNumOperands())
+    return 0;
 
-  if (!DefNode->isMachineOpcode())
-    return -1;
+  short RegClass = MCID.OpInfo[OpNum].RegClass;
+  if (MCID.OpInfo[OpNum].isLookupPtrRegClass())
+    return TRI->getPointerRegClass(MF, RegClass);
 
-  unsigned DefClass = get(DefNode->getMachineOpcode()).getSchedClass();
-  if (!UseNode->isMachineOpcode())
-    return ItinData->getOperandCycle(DefClass, DefIdx);
-  unsigned UseClass = get(UseNode->getMachineOpcode()).getSchedClass();
-  return ItinData->getOperandLatency(DefClass, DefIdx, UseClass, UseIdx);
-}
-
-bool TargetInstrInfo::hasLowDefLatency(const InstrItineraryData *ItinData,
-                                       const MachineInstr *DefMI,
-                                       unsigned DefIdx) const {
-  if (!ItinData || ItinData->isEmpty())
-    return false;
+  // Instructions like INSERT_SUBREG do not have fixed register classes.
+  if (RegClass < 0)
+    return 0;
 
-  unsigned DefClass = DefMI->getDesc().getSchedClass();
-  int DefCycle = ItinData->getOperandCycle(DefClass, DefIdx);
-  return (DefCycle != -1 && DefCycle <= 1);
+  // Otherwise just look it up normally.
+  return TRI->getRegClass(RegClass);
 }
 
 /// insertNoop - Insert a noop into the instruction stream at the specified
 /// point.
-void TargetInstrInfo::insertNoop(MachineBasicBlock &MBB, 
+void TargetInstrInfo::insertNoop(MachineBasicBlock &MBB,
                                  MachineBasicBlock::iterator MI) const {
   llvm_unreachable("Target didn't implement insertNoop!");
 }
 
-
-bool TargetInstrInfo::isUnpredicatedTerminator(const MachineInstr *MI) const {
-  const TargetInstrDesc &TID = MI->getDesc();
-  if (!TID.isTerminator()) return false;
-  
-  // Conditional branch is a special case.
-  if (TID.isBranch() && !TID.isBarrier())
-    return true;
-  if (!TID.isPredicable())
-    return true;
-  return !isPredicated(MI);
-}
-
-
 /// Measure the specified inline asm to determine an approximation of its
 /// length.
-/// Comments (which run till the next SeparatorChar or newline) do not
+/// Comments (which run till the next SeparatorString or newline) do not
 /// count as an instruction.
 /// Any other non-whitespace text is considered an instruction, with
-/// multiple instructions separated by SeparatorChar or newlines.
+/// multiple instructions separated by SeparatorString or newlines.
 /// Variable-length instructions are not handled here; this function
 /// may be overloaded in the target code to do that.
 unsigned TargetInstrInfo::getInlineAsmLength(const char *Str,
                                              const MCAsmInfo &MAI) const {
-  
-  
+
+
   // Count the number of instructions in the asm.
   bool atInsnStart = true;
   unsigned Length = 0;
   for (; *Str; ++Str) {
-    if (*Str == '\n' || *Str == MAI.getSeparatorChar())
+    if (*Str == '\n' || strncmp(Str, MAI.getSeparatorString(),
+                                strlen(MAI.getSeparatorString())) == 0)
       atInsnStart = true;
-    if (atInsnStart && !isspace(*Str)) {
+    if (atInsnStart && !std::isspace(*Str)) {
       Length += MAI.getMaxInstLength();
       atInsnStart = false;
     }
@@ -152,6 +83,6 @@ unsigned TargetInstrInfo::getInlineAsmLength(const char *Str,
                                strlen(MAI.getCommentString())) == 0)
       atInsnStart = false;
   }
-  
+
   return Length;
 }