EDSC builder test uses FileCheck to match the IR produced by EDSC in the
textual order. For mathematical operations, EDSC relies on overloaded
operators. Since they are essentially function calls, the order of evaluation
of their operands is unspecified and differs between compilers. Do not rely on
a specific order of operands and just check they are all emitted before the
last operation. Give names to matched SSA values in order to make sure the
right operands are used in relevant places.
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PiperOrigin-RevId: 249494995