If conversion should not convert PHI nodes (dotnet#77886)

a74nh · Nov 4, 2022 · 4214438 · 4214438
1 parent a1ec5e2
commit 4214438
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/coreclr/jit/optimizer.cpp b/src/coreclr/jit/optimizer.cpp
@@ -4762,6 +4762,12 @@ bool Compiler::optIfConvert(BasicBlock* block)
                         return false;
                     }
 
+                    // Ensure the source isn't a phi.
+                    if (op2->OperIs(GT_PHI))
+                    {
+                        return false;
+                    }
+
                     asgNode  = tree;
                     asgStmt  = stmt;
                     asgBlock = middleBlock;