Invention Grant
US08782381B2 Dynamically rewriting branch instructions in response to cache line eviction 有权
动态地重写分支指令以响应缓存线驱逐

Dynamically rewriting branch instructions in response to cache line eviction
Abstract:
Mechanisms are provided for evicting cache lines from an instruction cache of the data processing system. The mechanisms store, for a portion of code in a current cache line, a linked list of call sites that directly or indirectly target the portion of code in the current cache line. A determination is made as to whether the current cache line is to be evicted from the instruction cache. The linked list of call sites is processed to identify one or more rewritten branch instructions having associated branch stubs, that either directly or indirectly target the portion of code in the current cache line. In addition, the one or more rewritten branch instructions are rewritten to restore the one or more rewritten branch instructions to an original state based on information in the associated branch stubs.
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