[CostModel][x86] remove cost-kind predicate for intrinsic costs

We model cost as number of instructions / uops, so it does not
make sense to treat size/blended costs any differently than
throughput.

llvm/lib/Target/X86/X86TargetTransformInfo.cpp

@@ -2860,9 +2860,6 @@ int X86TTIImpl::getTypeBasedIntrinsicInstrCost(
 
 int X86TTIImpl::getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
                                       TTI::TargetCostKind CostKind) {
-  if (CostKind != TTI::TCK_RecipThroughput)
-    return BaseT::getIntrinsicInstrCost(ICA, CostKind);
-
   if (ICA.isTypeBasedOnly())
     return getTypeBasedIntrinsicInstrCost(ICA, CostKind);
 

llvm/test/Analysis/CostModel/X86/intrinsic-cost-kinds.ll

@@ -149,12 +149,12 @@ define void @fshl(i32 %a, i32 %b, i32 %c, <16 x i32> %va, <16 x i32> %vb, <16 x
 ; LATE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret void
 ;
 ; SIZE-LABEL: 'fshl'
-; SIZE-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %s = call i32 @llvm.fshl.i32(i32 %a, i32 %b, i32 %c)
+; SIZE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %s = call i32 @llvm.fshl.i32(i32 %a, i32 %b, i32 %c)
 ; SIZE-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %v = call <16 x i32> @llvm.fshl.v16i32(<16 x i32> %va, <16 x i32> %vb, <16 x i32> %vc)
 ; SIZE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret void
 ;
 ; SIZE_LATE-LABEL: 'fshl'
-; SIZE_LATE-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %s = call i32 @llvm.fshl.i32(i32 %a, i32 %b, i32 %c)
+; SIZE_LATE-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %s = call i32 @llvm.fshl.i32(i32 %a, i32 %b, i32 %c)
 ; SIZE_LATE-NEXT:  Cost Model: Found an estimated cost of 10 for instruction: %v = call <16 x i32> @llvm.fshl.v16i32(<16 x i32> %va, <16 x i32> %vb, <16 x i32> %vc)
 ; SIZE_LATE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret void
 ;