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GO Classes DPP | COMPILER|DATA DEPENDENCY

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Consider the following $C$ code segment:
 

x = y + 1; // Line 1
y = x - 2; // Line 2
z = x + y; // Line 3
x = 5;     // Line 4
y =z * 2;  // Line 5


In the context of instruction-level parallelism, a dependency exists if two statements access the same memory location, and at least one access is a write.

The total number of distinct Output (Write-After-Write, WAW) data dependencies in this code segment is $\_\_\_\_$

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