Matabeleland food shortages. Robert Mugabe and Joshua Nkomo finally reconciled their political differences by late 1987. The roots of discord remained, however, and in some ways increased as Mugabe's rule became increasingly autocratic into the 21st century. In the early 1990s, a Land Acquisition Act was passed, calling for the Mugabe government to purchase mostly white-owned commercial farming land for redistribution to native Africans. Matabeleland has rich central plains, watered by tributaries of the Zambezi and Limpopo rivers, allowing it to sustain cattle and consistently produce large amounts of cotton and maize. But land grabbing, squatting, and repossessions of large white
Use-define chain variable and all the uses, U, reachable from that definition without any other intervening definitions. Both UD and DU chains are created by using a form of static code analysis known as data flow analysis. Knowing the use-def and def-use chains for a program or subprogram is a prerequisite for many compiler optimizations, including constant propagation and common subexpression elimination. Making the use-define or define-use chains is a step in liveness analysis, so that logical representations of all the variables can be identified and tracked through the code. Consider the following snippet of code: Notice that codice_1 is assigned a