[llvm] [IA] Support vp.store in lowerinterleavedStore (PR #149605)

[Philip Reames via llvm-commits]

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@@ -266,22 +266,28 @@ bool RISCVTargetLowering::lowerInterleavedLoad(
 ///
 /// Note that the new shufflevectors will be removed and we'll only generate one
 /// vsseg3 instruction in CodeGen.
-bool RISCVTargetLowering::lowerInterleavedStore(StoreInst *SI,
+bool RISCVTargetLowering::lowerInterleavedStore(Instruction *Store,
+                                                Value *LaneMask,
                                                 ShuffleVectorInst *SVI,
                                                 unsigned Factor) const {
-  IRBuilder<> Builder(SI);
-  const DataLayout &DL = SI->getDataLayout();
+  IRBuilder<> Builder(Store);
+  const DataLayout &DL = Store->getDataLayout();
   auto Mask = SVI->getShuffleMask();
   auto *ShuffleVTy = cast<FixedVectorType>(SVI->getType());
   // Given SVI : <n*factor x ty>, then VTy : <n x ty>
   auto *VTy = FixedVectorType::get(ShuffleVTy->getElementType(),
                                    ShuffleVTy->getNumElements() / Factor);
-  if (!isLegalInterleavedAccessType(VTy, Factor, SI->getAlign(),
-                                    SI->getPointerAddressSpace(), DL))
+  auto *XLenTy = Type::getIntNTy(Store->getContext(), Subtarget.getXLen());
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preames wrote:

I have this same pattern in a few cases in this file, I'll do this as a post-commit and get them all.  

https://github.com/llvm/llvm-project/pull/149605