CQ35478

这是一个SPLOOP的性能问题。它是由硬件缺陷而造成的。此缺陷会导致在执行SPKERNEL时额外的一个CPU延迟机器周期。这种延迟发生的条件是以下三个：

1）SPKERNEL指令后紧跟着一个通过交叉路径阅读寄存器的指令

2）在SPLOOP内有指令写上述寄存器

3）与SPKERNEL指令并行执行的指令都不与1）中指令使用同一功能单元

修复这个问题的方法是在发生上述情况时，在SPKERNEL 指令与后面的指令之间加入一个NOP指令。

缺陷发生在：

C6000的编译器版本：6.0.1B1 - 6.0.24，6.1.13 - 6.1.14，7.0.0B1 - 7.0.1，7.1.0B1

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For technical support on MultiCore devices, please post your questions in the C6000 MultiCore Forum
For questions related to the BIOS MultiCore SDK (MCSDK), please use the BIOS Forum

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