Set a higher value for maxStoresPerMemcpy in MipsISelLowering.cpp.

llvm-svn: 158414

2 files changed, 17 insertions, 0 deletions

diff --git a/llvm/lib/Target/Mips/MipsISelLowering.cpp b/llvm/lib/Target/Mips/MipsISelLowering.cpp
index d6a8b8e3658..aa777f7c2c1 100644
--- a/llvm/lib/Target/Mips/MipsISelLowering.cpp
+++ b/llvm/lib/Target/Mips/MipsISelLowering.cpp
@@ -303,6 +303,8 @@ MipsTargetLowering(MipsTargetMachine &TM)
 
   setExceptionPointerRegister(IsN64 ? Mips::A0_64 : Mips::A0);
   setExceptionSelectorRegister(IsN64 ? Mips::A1_64 : Mips::A1);
+
+  maxStoresPerMemcpy = 16;
 }
 
 bool MipsTargetLowering::allowsUnalignedMemoryAccesses(EVT VT) const {
@@ -3455,6 +3457,16 @@ MipsTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
   return false;
 }
 
+EVT MipsTargetLowering::getOptimalMemOpType(uint64_t Size, unsigned DstAlign,
+                                            unsigned SrcAlign, bool IsZeroVal,
+                                            bool MemcpyStrSrc,
+                                            MachineFunction &MF) const {
+  if (Subtarget->hasMips64())
+    return MVT::i64;
+
+  return MVT::i32;
+}
+
 bool MipsTargetLowering::isFPImmLegal(const APFloat &Imm, EVT VT) const {
   if (VT != MVT::f32 && VT != MVT::f64)
     return false;
diff --git a/llvm/lib/Target/Mips/MipsISelLowering.h b/llvm/lib/Target/Mips/MipsISelLowering.h
index 740cf06406f..e45d352b415 100644
--- a/llvm/lib/Target/Mips/MipsISelLowering.h
+++ b/llvm/lib/Target/Mips/MipsISelLowering.h
@@ -195,6 +195,11 @@ namespace llvm {
 
     virtual bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const;
 
+    virtual EVT getOptimalMemOpType(uint64_t Size, unsigned DstAlign,
+                                    unsigned SrcAlign, bool IsZeroVal,
+                                    bool MemcpyStrSrc,
+                                    MachineFunction &MF) const;
+
     /// isFPImmLegal - Returns true if the target can instruction select the
     /// specified FP immediate natively. If false, the legalizer will
     /// materialize the FP immediate as a load from a constant pool.