[X86] Fix lowering to illegal type in LowerINSERT_VECTOR_ELT

llvm · Jul 28, 2021 · 6ff73ef · 6ff73ef
1 parent 2f7511c
commit 6ff73ef
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Showing 2 changed files with 576 additions and 14 deletions.
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -18970,6 +18970,9 @@ SDValue X86TargetLowering::LowerINSERT_VECTOR_ELT(SDValue Op,
 
     MVT IdxSVT = MVT::getIntegerVT(EltSizeInBits);
     MVT IdxVT = MVT::getVectorVT(IdxSVT, NumElts);
+    if (!isTypeLegal(IdxSVT) || !isTypeLegal(IdxVT))
+      return SDValue();
+
     SDValue IdxExt = DAG.getZExtOrTrunc(N2, dl, IdxSVT);
     SDValue IdxSplat = DAG.getSplatBuildVector(IdxVT, dl, IdxExt);
     SDValue EltSplat = DAG.getSplatBuildVector(VT, dl, N1);