[llvm] [PowerPC] cost modeling for length type VP intrinsic load/store (PR #168938)

[zhijian lin via llvm-commits]

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@@ -1078,3 +1082,61 @@ PPCTTIImpl::getVPLegalizationStrategy(const VPIntrinsic &PI) const {
 
   return VPLegalization(VPLegalization::Legal, VPLegalization::Legal);
 }
+
+bool PPCTTIImpl::hasActiveVectorLength() const {
+  unsigned CPU = ST->getCPUDirective();
+  if (!PPCEVL)
+    return false;
+  if (CPU == PPC::DIR_PWR10 || CPU == PPC::DIR_PWR_FUTURE ||
+      (Pwr9EVL && CPU == PPC::DIR_PWR9))
+    return true;
+  return false;
+}
+
+static inline bool isLegalLoadWithLengthType(EVT VT) {
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diggerlin wrote:

since the function is a simple static function and only used in the `isLegalMaskedLoad` , we can make the function as lamda function in the `isLegalMaskedLoad`

https://github.com/llvm/llvm-project/pull/168938