Displaying 1 result from an estimated 1 matches for "usecycl".
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usecycle
2013 Dec 20
1
[LLVMdev] extra one cycle of getOperandLatency
Hi llvm-dev,
I wonder why there is an extra cycle for getOperandLatency.
It doesn't seem intuitive.
UseCycle = DefCycle - UseCycle + 1;
When I read the comments in TargetItinerary.td, it said
OperandCycles are optional "cycle counts". They specify the cycle after
instruction issue the values which correspond to specific operand indices
are defined or read.
I thought if an instruction r...