[llvm] aaddf43 - [X86][AMX] Add check for potentially dereferencing null return value

[Bing1 Yu via llvm-commits]

Author: Bing1 Yu
Date: 2023-04-11T13:01:03+08:00
New Revision: aaddf43fc3d80f8cc415497f5b250dddb3d103ac

URL: https://github.com/llvm/llvm-project/commit/aaddf43fc3d80f8cc415497f5b250dddb3d103ac
DIFF: https://github.com/llvm/llvm-project/commit/aaddf43fc3d80f8cc415497f5b250dddb3d103ac.diff

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

Reviewed By: xiangzhangllvm

Differential Revision: https://reviews.llvm.org/D147921

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/lib/Target/X86/X86LowerAMXType.cpp b/llvm/lib/Target/X86/X86LowerAMXType.cpp
index 547f897bbdc09..6966ee4b6fbe5 100644
--- a/llvm/lib/Target/X86/X86LowerAMXType.cpp
+++ b/llvm/lib/Target/X86/X86LowerAMXType.cpp
@@ -488,7 +488,7 @@ static void replaceWithTileLoad(Use &U, Value *Ptr, bool IsPHI = false) {
   // 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);