[CostModel][AArch64] Remove amortization factor for some of the vector select instruc...

[oota-llvm.git] / lib / Target / AArch64 / AArch64TargetTransformInfo.cpp

diff --git a/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
index 79f657fa26b09a716c3bad156f1efbb383d21616..f7bad98a74a8ab90da78686025fd73b2b227d8f3 100644 (file)
--- a/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
+++ b/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
@@ -380,15 +380,16 @@ int AArch64TTIImpl::getCmpSelInstrCost(unsigned Opcode, Type *ValTy,
                                        Type *CondTy) {
 
   int ISD = TLI->InstructionOpcodeToISD(Opcode);
-  // We don't lower vector selects well that are wider than the register width.
+  // We don't lower some vector selects well that are wider than the register
+  // width.
   if (ValTy->isVectorTy() && ISD == ISD::SELECT) {
     // We would need this many instructions to hide the scalarization happening.
     const int AmortizationCost = 20;
     static const TypeConversionCostTblEntry<MVT::SimpleValueType>
     VectorSelectTbl[] = {
-      { ISD::SELECT, MVT::v16i1, MVT::v16i16, 16 * AmortizationCost },
-      { ISD::SELECT, MVT::v8i1, MVT::v8i32, 8 * AmortizationCost },
-      { ISD::SELECT, MVT::v16i1, MVT::v16i32, 16 * AmortizationCost },
+      { ISD::SELECT, MVT::v16i1, MVT::v16i16, 16 },
+      { ISD::SELECT, MVT::v8i1, MVT::v8i32, 8 },
+      { ISD::SELECT, MVT::v16i1, MVT::v16i32, 16 },
       { ISD::SELECT, MVT::v4i1, MVT::v4i64, 4 * AmortizationCost },
       { ISD::SELECT, MVT::v8i1, MVT::v8i64, 8 * AmortizationCost },
       { ISD::SELECT, MVT::v16i1, MVT::v16i64, 16 * AmortizationCost }