llvm-project/llvm/lib/Target/RISCV/RISCVPfmCounters.td
Craig Topper afa8aeeeec
[RISCV][llvm-exegesis] Add default Pfm cycle counter. (#121866)
Also tested with Ubuntu on SiFive's HiFive Premier P550 board. Curiously
latency is reporting ~1.5 on basic scalar arithmetic, scalar mul is
~3.5, and div is ~36.5. This 0.5 cycles higher than I expect.
2025-01-07 09:51:34 -08:00

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TableGen

//===---- RISCVPfmCounters.td - RISC-V Hardware Counters ---*- tablegen -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This describes the available hardware counters for RISC-V.
//
//===----------------------------------------------------------------------===//
def CpuCyclesPfmCounter : PfmCounter<"CYCLES">;
def DefaultPfmCounters : ProcPfmCounters {
let CycleCounter = CpuCyclesPfmCounter;
}
def : PfmCountersDefaultBinding<DefaultPfmCounters>;