Zcmp Extension
6 instructions in the Zcmp extension.
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cm.mva01s
— Move two s0-s7 registers into a0-a1
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cm.mvsa01
— Move a0-a1 into two registers of s0-s7
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cm.pop
— Destroy function call stack frame
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cm.popret
— Destroy function call stack frame and return to `ra`
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cm.popretz
— Destroy function call stack frame, move zero to `a0` and return to `ra`
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cm.push
— Create function call stack frame