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1026762
2012 Nov 21
4
[LLVMdev] Disable loop unroll pass
Hi,
We've a target which has hardware support for zero-overhead loops.
Currently, we cannot detect them because the loop unroller is unrolling
them before entering into the codegen. Looking at its implementation, it
seems that it checks if it is profitable to unroll it or not based on
certain parameters.
Given that zero cost loops building is based more or less on the same
constraints