ARM: teach LLVM that Cortex-A7 is very similar to A8.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205314 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMBaseInstrInfo.cpp b/lib/Target/ARM/ARMBaseInstrInfo.cpp
index 4c69a90c4b63373efd9b212673cff2afcff769ad..47f5bf929c7dc17bedb97ffd7e266d99f6f0ee42 100644 (file)
--- a/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -2967,7 +2967,7 @@ ARMBaseInstrInfo::getNumMicroOps(const InstrItineraryData *ItinData,
         break;
       }
       return UOps;
-    } else if (Subtarget.isCortexA8()) {
+    } else if (Subtarget.isCortexA8() || Subtarget.isCortexA7()) {
       if (NumRegs < 4)
         return 2;
       // 4 registers would be issued: 2, 2.
@@ -3004,7 +3004,7 @@ ARMBaseInstrInfo::getVLDMDefCycle(const InstrItineraryData *ItinData,
     return ItinData->getOperandCycle(DefClass, DefIdx);
 
   int DefCycle;
-  if (Subtarget.isCortexA8()) {
+  if (Subtarget.isCortexA8() || Subtarget.isCortexA7()) {
     // (regno / 2) + (regno % 2) + 1
     DefCycle = RegNo / 2 + 1;
     if (RegNo % 2)
@@ -3045,7 +3045,7 @@ ARMBaseInstrInfo::getLDMDefCycle(const InstrItineraryData *ItinData,
     return ItinData->getOperandCycle(DefClass, DefIdx);
 
   int DefCycle;
-  if (Subtarget.isCortexA8()) {
+  if (Subtarget.isCortexA8() || Subtarget.isCortexA7()) {
     // 4 registers would be issued: 1, 2, 1.
     // 5 registers would be issued: 1, 2, 2.
     DefCycle = RegNo / 2;
@@ -3079,7 +3079,7 @@ ARMBaseInstrInfo::getVSTMUseCycle(const InstrItineraryData *ItinData,
     return ItinData->getOperandCycle(UseClass, UseIdx);
 
   int UseCycle;
-  if (Subtarget.isCortexA8()) {
+  if (Subtarget.isCortexA8() || Subtarget.isCortexA7()) {
     // (regno / 2) + (regno % 2) + 1
     UseCycle = RegNo / 2 + 1;
     if (RegNo % 2)
@@ -3119,7 +3119,7 @@ ARMBaseInstrInfo::getSTMUseCycle(const InstrItineraryData *ItinData,
     return ItinData->getOperandCycle(UseClass, UseIdx);
 
   int UseCycle;
-  if (Subtarget.isCortexA8()) {
+  if (Subtarget.isCortexA8() || Subtarget.isCortexA7()) {
     UseCycle = RegNo / 2;
     if (UseCycle < 2)
       UseCycle = 2;
@@ -3309,7 +3309,7 @@ static int adjustDefLatency(const ARMSubtarget &Subtarget,
                             const MachineInstr *DefMI,
                             const MCInstrDesc *DefMCID, unsigned DefAlign) {
   int Adjust = 0;
-  if (Subtarget.isCortexA8() || Subtarget.isLikeA9()) {
+  if (Subtarget.isCortexA8() || Subtarget.isLikeA9() || Subtarget.isCortexA7()) {
     // FIXME: Shifter op hack: no shift (i.e. [r +/- r]) or [r + r << 2]
     // variants are one cycle cheaper.
     switch (DefMCID->getOpcode()) {
@@ -3610,7 +3610,8 @@ ARMBaseInstrInfo::getOperandLatency(const InstrItineraryData *ItinData,
                                   UseMCID, UseIdx, UseAlign);
 
   if (Latency > 1 &&
-      (Subtarget.isCortexA8() || Subtarget.isLikeA9())) {
+      (Subtarget.isCortexA8() || Subtarget.isLikeA9() ||
+       Subtarget.isCortexA7())) {
     // FIXME: Shifter op hack: no shift (i.e. [r +/- r]) or [r + r << 2]
     // variants are one cycle cheaper.
     switch (DefMCID.getOpcode()) {

diff --git a/lib/Target/ARM/ARMISelDAGToDAG.cpp b/lib/Target/ARM/ARMISelDAGToDAG.cpp
index f8841a2b058d03a825e720f471d54eedbf5a5029..970c63342c02d1dab06dd4487bdf452ec8ab8b37 100644 (file)
--- a/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -412,8 +412,8 @@ bool ARMDAGToDAGISel::hasNoVMLxHazardUse(SDNode *N) const {
   if (!CheckVMLxHazard)
     return true;
 
-  if (!Subtarget->isCortexA8() && !Subtarget->isCortexA9() &&
-      !Subtarget->isSwift())
+  if (!Subtarget->isCortexA7() && !Subtarget->isCortexA8() &&
+      !Subtarget->isCortexA9() && !Subtarget->isSwift())
     return true;
 
   if (!N->hasOneUse())

diff --git a/lib/Target/ARM/ARMSubtarget.h b/lib/Target/ARM/ARMSubtarget.h
index e76cc85a1aa1e062f30eac2b204560ab6112201d..3ffc72e21e011899c4187f334134277d3d0db17e 100644 (file)
--- a/lib/Target/ARM/ARMSubtarget.h
+++ b/lib/Target/ARM/ARMSubtarget.h
@@ -265,6 +265,7 @@ public:
   bool hasV8Ops()   const { return HasV8Ops;  }
 
   bool isCortexA5() const { return ARMProcFamily == CortexA5; }
+  bool isCortexA7() const { return ARMProcFamily == CortexA7; }
   bool isCortexA8() const { return ARMProcFamily == CortexA8; }
   bool isCortexA9() const { return ARMProcFamily == CortexA9; }
   bool isCortexA15() const { return ARMProcFamily == CortexA15; }