Define cache properties for the optimizer .
This option specifies the cache properties that the optimizer can use. It does not guarantee that any particular cache property is used.
Although this option can be used alone, it is part of the expansion of the –xtarget option; it is provided to allow overriding an -xcache value implied by a specific -xtarget option.
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The si/li/ai/ti fields are defined as follows:
The size of the data cache at level i, in kilobytes
The line size of the data cache at level i, in bytes
The associativity of the data cache at level i
The number of hardware threads sharing the cache at level i (optional)
Example: xcache=16/32/4:1024/32/1 specifies the following:
A Level 1 cache has: 16K bytes, 32 byte line size, 4–way associativity.
A Level 2 cache has: 1024K bytes, 32 byte line size, direct mapping associativity.