From c0dfffa448ad7ab647779bc3e7f2aee5c76cb31b Mon Sep 17 00:00:00 2001 From: Andrew Trick Date: Tue, 9 Oct 2012 23:44:32 +0000 Subject: misched: Add computeInstrLatency to TargetSchedModel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165566 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/CodeGen/TargetSchedule.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/llvm/CodeGen') diff --git a/include/llvm/CodeGen/TargetSchedule.h b/include/llvm/CodeGen/TargetSchedule.h index 6a5359de14..3adbe7d0d7 100644 --- a/include/llvm/CodeGen/TargetSchedule.h +++ b/include/llvm/CodeGen/TargetSchedule.h @@ -74,6 +74,14 @@ public: const MachineInstr *UseMI, unsigned UseOperIdx, bool FindMin) const; + /// \brief Compute the instruction latency based on the available machine + /// model. + /// + /// Compute and return the expected latency of this instruction independent of + /// a particular use. computeOperandLatency is the prefered API, but this is + /// occasionally useful to help estimate instruction cost. + unsigned computeInstrLatency(const MachineInstr *MI) const; + /// \brief Identify the processor corresponding to the current subtarget. unsigned getProcessorID() const { return SchedModel.getProcessorID(); } -- cgit v1.2.3-70-g09d2