Three address instructions
| . Assignment
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. Function
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| - x = y op z
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- param x
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| - x = op y
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- call p,n
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| - x = y
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- return y
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| . Jump
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|
| - goto L
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. Pointer
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| - if x relop y goto L
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- x = &y
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| .Indexed assignment |
- x = *y
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| - x = y[i]
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- *x = y
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| - x[i] = y
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The various types of the three-address codes. Statements can have symbolic label and there are statements for flow of control. A symbolic label represents the index of a three-address statement in the array holding intermediate code. Actual indices can be substituted for the labels either by making a separate pass, or by using backpatching.
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