[llvm] r317477 - [SystemZ] implement hasDivRemOp()

[Jonas Paulsson via llvm-commits]

Author: jonpa
Date: Mon Nov  6 05:10:31 2017
New Revision: 317477

URL: http://llvm.org/viewvc/llvm-project?rev=317477&view=rev
Log:
[SystemZ]  implement hasDivRemOp()

SystemZ can do division and remainder in a single instruction for scalar
integer types, which are now reflected by returning true in this hook for
those cases.

Review: Ulrich Weigand

Modified:
    llvm/trunk/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp
    llvm/trunk/lib/Target/SystemZ/SystemZTargetTransformInfo.h

Modified: llvm/trunk/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp?rev=317477&r1=317476&r2=317477&view=diff
==============================================================================
--- llvm/trunk/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp (original)
+++ llvm/trunk/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp Mon Nov  6 05:10:31 2017
@@ -323,6 +323,11 @@ unsigned SystemZTTIImpl::getRegisterBitW
   return 0;
 }
 
+bool SystemZTTIImpl::hasDivRemOp(Type *DataType, bool IsSigned) {
+  EVT VT = TLI->getValueType(DL, DataType);
+  return (VT.isScalarInteger() && TLI->isTypeLegal(VT));
+}
+
 int SystemZTTIImpl::getArithmeticInstrCost(
     unsigned Opcode, Type *Ty,  
     TTI::OperandValueKind Op1Info, TTI::OperandValueKind Op2Info,

Modified: llvm/trunk/lib/Target/SystemZ/SystemZTargetTransformInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/SystemZ/SystemZTargetTransformInfo.h?rev=317477&r1=317476&r2=317477&view=diff
==============================================================================
--- llvm/trunk/lib/Target/SystemZ/SystemZTargetTransformInfo.h (original)
+++ llvm/trunk/lib/Target/SystemZ/SystemZTargetTransformInfo.h Mon Nov  6 05:10:31 2017
@@ -62,6 +62,7 @@ public:
   unsigned getPrefetchDistance() { return 2000; }
   unsigned getMinPrefetchStride() { return 2048; }
 
+  bool hasDivRemOp(Type *DataType, bool IsSigned);
   bool prefersVectorizedAddressing() { return false; }
   bool LSRWithInstrQueries() { return true; }
   bool supportsEfficientVectorElementLoadStore() { return true; }