[PATCH] D147921: [X86][AMX] Add check for potentially dereferencing null return value

[Bing Yu via Phabricator via llvm-commits]

yubing created this revision.
Herald added subscribers: pengfei, hiraditya.
Herald added a project: All.
yubing requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147921

Files:
  llvm/lib/Target/X86/X86LowerAMXType.cpp


Index: llvm/lib/Target/X86/X86LowerAMXType.cpp
===================================================================
--- llvm/lib/Target/X86/X86LowerAMXType.cpp
+++ llvm/lib/Target/X86/X86LowerAMXType.cpp
@@ -488,7 +488,7 @@
   // Get tile shape.
   IntrinsicInst *II = nullptr;
   if (IsPHI) {
-    Value *PhiOp = dyn_cast<PHINode>(V)->getIncomingValue(0);
+    Value *PhiOp = cast<PHINode>(V)->getIncomingValue(0);
     II = cast<IntrinsicInst>(PhiOp);
   } else {
     II = cast<IntrinsicInst>(V);


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