optimising compiler การใช้

In spite of the aforementioned difficulties, IBM produced its PL / I optimising compiler in 1971.
These conversions are required by asm . js, so that an optimising compiler can produce highly efficient native code ahead-of-time.
If range of the required result is greater than the range of operands, this normally produces slow inefficient code, even from a good optimising compiler.
In such an optimising compiler, no conversions are performed when asm . js code calls other asm . js code, as the required type specifiers mean it is guaranteed that values will already have the correct type.
Their disadvantages include the need for multiple chained pointer indirections to access an element, and the extra work required to determine the next row in an " n "-dimensional array to allow an optimising compiler to prefetch it.