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exitlast
2015 Mar 27
9
[LLVMdev] fix for loop scale limiting in BFI
I've been trying to get rid of the loop scale limiting problem during
BFI. Initially, this was saturating frequencies to the max side of the
scale, so a double nested loop would get max frequencies in all the
blocks (e.g., llvm/test/CodeGen/X86/lsr-i386.ll). This made the inner
loop no hotter than the outer loop, so block placement would not
bother aligning them.
In convertFloatingToInteger()