ARM64-SVE: refactor lsra buildHWIntrinsic

src/coreclr/jit/hwintrinsic.h

@@ -948,12 +948,6 @@ struct HWIntrinsicInfo
         return (flags & HW_Flag_Scalable) != 0;
     }
 
-    static bool IsMaskedOperation(NamedIntrinsic id)
-    {
-        const HWIntrinsicFlag flags = lookupFlags(id);
-        return IsLowMaskedOperation(id) || IsOptionalEmbeddedMaskedOperation(id) || IsExplicitMaskedOperation(id);
-    }
-
     static bool IsLowMaskedOperation(NamedIntrinsic id)
     {
         const HWIntrinsicFlag flags                = lookupFlags(id);

src/coreclr/jit/lsra.h

@@ -1418,7 +1418,11 @@ class LinearScan : public LinearScanInterface
         return nextConsecutiveRefPositionMap;
     }
     FORCEINLINE RefPosition* getNextConsecutiveRefPosition(RefPosition* refPosition);
-    void getLowVectorOperandAndCandidates(HWIntrinsic intrin, size_t* operandNum, SingleTypeRegSet* candidates);
+    SingleTypeRegSet         getOperandCandidates(GenTreeHWIntrinsic* intrinsicTree, HWIntrinsic intrin, size_t opNum);
+    GenTree*                 getDelayFreeOperand(GenTreeHWIntrinsic* intrinsicTree, bool embedded = false);
+    GenTree*                 getVectorAddrOperand(GenTreeHWIntrinsic* intrinsicTree);
+    GenTree*                 getConsecutiveRegistersOperand(const HWIntrinsic intrin, bool* destIsConsecutive);
+    GenTreeHWIntrinsic*      getEmbeddedMaskOperand(const HWIntrinsic intrin);
 #endif
 
 #ifdef DEBUG
@@ -2031,6 +2035,8 @@ class LinearScan : public LinearScanInterface
 #ifdef TARGET_ARM64
     int  BuildConsecutiveRegistersForUse(GenTree* treeNode, GenTree* rmwNode = nullptr);
     void BuildConsecutiveRegistersForDef(GenTree* treeNode, int fieldCount);
+    void BuildHWIntrinsicImmediate(GenTreeHWIntrinsic* intrinsicTree, const HWIntrinsic intrin);
+    int  BuildEmbeddedOperandUses(GenTreeHWIntrinsic* embeddedOpNode, GenTree* embeddedDelayFreeOp);
 #endif // TARGET_ARM64
 #endif // FEATURE_HW_INTRINSICS