Displaying 1 result from an estimated 1 matches for "numcyclesforstoreloadthroughmemory".
2015 Jun 12
4
[LLVMdev] Loop Vectorization and Store-Load Forwarding issue
...cting store may flush out of the store pipe by the time the load is issued. And vectorization may become beneficial.
I am seeing some performance improvements when I disable the method above. This is for x86. Hence I am seeking some advice on how to improve the following logic. Can we better model NumCyclesForStoreLoadThroughMemory ? This may be way too high ? Or there are other ways to circumvent the basic problem ?
-TIA
Dibyendu
Part A:
const unsigned NumCyclesForStoreLoadThroughMemory = 8*TypeByteSize; // 512 for the test case shown
// Maximum vector factor.
unsigned MaxVFWithoutSLForwardIssues = VectorizerParams:...