[llvm] [Asan] Provide TTI hook to provide memory reference infromation of target intrinsics. (PR #97070)

[Yeting Kuo via llvm-commits]

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@@ -36,6 +37,72 @@ static cl::opt<unsigned> SLPMaxVF(
         "exclusively by SLP vectorizer."),
     cl::Hidden);
 
+bool RISCVTTIImpl::getMemoryRefInfo(SmallVectorImpl<MemoryRefInfo> &Interesting,
+                                    IntrinsicInst *II) const {
+  const DataLayout &DL = getDataLayout();
+  Intrinsic::ID IntNo = II->getIntrinsicID();
+  LLVMContext &C = II->getContext();
+  bool HasMask = false;
+
+  switch (IntNo) {
+  case Intrinsic::riscv_vle_mask:
+  case Intrinsic::riscv_vse_mask:
+    HasMask = true;
+    [[fallthrough]];
+  case Intrinsic::riscv_vle:
+  case Intrinsic::riscv_vse: {
+    bool IsWrite = II->getType()->isVoidTy();
+    Type *Ty = IsWrite ? II->getArgOperand(0)->getType() : II->getType();
+    const auto *RVVIInfo = RISCVVIntrinsicsTable::getRISCVVIntrinsicInfo(IntNo);
+    unsigned VLIndex = RVVIInfo->VLOperand;
+    unsigned PtrOperandNo = VLIndex - 1 - HasMask;
+    MaybeAlign Alignment =
+        II->getArgOperand(PtrOperandNo)->getPointerAlignment(DL);
+    Type *MaskType = Ty->getWithNewType(Type::getInt1Ty(C));
+    Value *Mask = ConstantInt::get(MaskType, 1);
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yetingk wrote:

Done.

https://github.com/llvm/llvm-project/pull/97070