Ensure simdTmpVar is inserted into the IR

dotnet · Dec 12, 2024 · 1acd2f9 · 1acd2f9
1 parent bfa2fee
commit 1acd2f9
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/coreclr/jit/decomposelongs.cpp b/src/coreclr/jit/decomposelongs.cpp
@@ -1881,12 +1881,17 @@ GenTree* DecomposeLongs::DecomposeHWIntrinsicMoveMask(LIR::Use& use, GenTreeHWIn
 
     if (varTypeIsByte(simdBaseType))
     {
+        // Create:
+        //      simdTmpVar = op1
+
         GenTree* simdTmpVar    = RepresentOpAsLocalVar(op1, node, &node->Op(1));
         unsigned simdTmpVarNum = simdTmpVar->AsLclVarCommon()->GetLclNum();
         JITDUMP("[DecomposeHWIntrinsicMoveMask]: Saving op1 tree to a temp var:\n");
         DISPTREERANGE(Range(), simdTmpVar);
         Range().Remove(simdTmpVar);
 
+        Range().InsertBefore(node, simdTmpVar);
+
         // Create:
         //      simdTmpLo = GT_HWINTRINSIC{GetLower}(simdTmpVar)
         //      loResult  = GT_HWINTRINSIC{MoveMask}(simdTmpLo)