[NFC][llvm-exegesis] Refactor ResolvedSchedClass & friends

Summary:
`ResolvedSchedClass` will need to be used outside of `Analysis`
(before `InstructionBenchmarkClustering` even), therefore promote
it into a non-private top-level class, and while there also
move all of the functions that are only called by `ResolvedSchedClass`
into that same new file.

Reviewers: courbet, gchatelet

Reviewed By: courbet

Subscribers: mgorny, tschuett, mgrang, jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59993

llvm-svn: 357259

1 files changed, 58 insertions, 0 deletions

diff --git a/llvm/tools/llvm-exegesis/lib/SchedClassResolution.h b/llvm/tools/llvm-exegesis/lib/SchedClassResolution.h
new file mode 100644
index 00000000000..00f65ee2edf
--- /dev/null
+++ b/llvm/tools/llvm-exegesis/lib/SchedClassResolution.h
@@ -0,0 +1,58 @@
+//===-- SchedClassResolution.h ----------------------------------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// Analysis output for benchmark results.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_EXEGESIS_SCHEDCLASSRESOLUTION_H
+#define LLVM_TOOLS_LLVM_EXEGESIS_SCHEDCLASSRESOLUTION_H
+
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCDisassembler/MCDisassembler.h"
+#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/raw_ostream.h"
+
+namespace llvm {
+namespace exegesis {
+
+// Computes the idealized ProcRes Unit pressure. This is the expected
+// distribution if the CPU scheduler can distribute the load as evenly as
+// possible.
+std::vector<std::pair<uint16_t, float>> computeIdealizedProcResPressure(
+    const llvm::MCSchedModel &SM,
+    llvm::SmallVector<llvm::MCWriteProcResEntry, 8> WPRS);
+
+// An llvm::MCSchedClassDesc augmented with some additional data.
+struct ResolvedSchedClass {
+  ResolvedSchedClass(const llvm::MCSubtargetInfo &STI,
+                     unsigned ResolvedSchedClassId, bool WasVariant);
+
+  static std::pair<unsigned /*SchedClassId*/, bool /*WasVariant*/>
+  resolveSchedClassId(const llvm::MCSubtargetInfo &SubtargetInfo,
+                      const llvm::MCInstrInfo &InstrInfo,
+                      const llvm::MCInst &MCI);
+
+  const unsigned SchedClassId;
+  const llvm::MCSchedClassDesc *const SCDesc;
+  const bool WasVariant; // Whether the original class was variant.
+  const llvm::SmallVector<llvm::MCWriteProcResEntry, 8>
+      NonRedundantWriteProcRes;
+  const std::vector<std::pair<uint16_t, float>> IdealizedProcResPressure;
+};
+
+} // namespace exegesis
+} // namespace llvm
+
+#endif // LLVM_TOOLS_LLVM_EXEGESIS_SCHEDCLASSRESOLUTION_H