first draft

include/Conversion/QUIRToPulse/LoadPulseCals.h

@@ -0,0 +1,106 @@
+//===- LoadPulseCals.h ------------------------------------------*- C++ -*-===//
+//
+// (C) Copyright IBM 2023.
+//
+// This code is part of Qiskit.
+//
+// This code is licensed under the Apache License, Version 2.0 with LLVM
+// Exceptions. You may obtain a copy of this license in the LICENSE.txt
+// file in the root directory of this source tree.
+//
+// Any modifications or derivative works of this code must retain this
+// copyright notice, and modified files need to carry a notice indicating
+// that they have been altered from the originals.
+//
+//===----------------------------------------------------------------------===//
+///
+/// This file declares the pass to load the pulse calibrations.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LOAD_PULSE_CALS_H
+#define LOAD_PULSE_CALS_H
+
+#include "Dialect/Pulse/IR/PulseOps.h"
+
+#include "mlir/IR/MLIRContext.h"
+#include "mlir/Pass/Pass.h"
+
+namespace mlir::pulse {
+
+struct LoadPulseCalsPass
+    : public PassWrapper<LoadPulseCalsPass, OperationPass<ModuleOp>> {
+  std::string DEFAULT_PULSE_CALS = "";
+  std::string ADDITIONAL_PULSE_CALS = "";
+
+  // this pass receives the path to default pulse calibrations file as input.
+  // optionally, it can also receive a path to additional pulse calibrations,
+  // which can be used to (a) override the pulse calibration that will be used
+  // for some quantum gates. e.g., one might be interested to study the impact
+  // of changing the pulse sequence corresponding to cx quantum gate on qubits
+  // 4 and 5, then they can specify the desired pulse sequence in an additional
+  // file; and/or (b) add additional pulse calibrations
+  LoadPulseCalsPass() = default;
+  LoadPulseCalsPass(const LoadPulseCalsPass &pass) : PassWrapper(pass) {}
+  LoadPulseCalsPass(std::string inDefaultPulseCals) {
+    DEFAULT_PULSE_CALS = inDefaultPulseCals;
+  }
+  LoadPulseCalsPass(std::string inDefaultPulseCals,
+                    std::string inAdditionalPulseCals) {
+    DEFAULT_PULSE_CALS = inDefaultPulseCals;
+    ADDITIONAL_PULSE_CALS = inAdditionalPulseCals;
+  }
+
+  void runOnOperation() override;
+
+  llvm::StringRef getArgument() const override;
+  llvm::StringRef getDescription() const override;
+
+  // optionally, one can override the path to default pulse calibrations with
+  // this option; e.g., to write a LIT test one can invoke this pass with
+  // --load-pulse-cals=default-pulse-cals=<path-to-pulse-cals-file>
+  Option<std::string> defaultPulseCals{
+      *this, "default-pulse-cals",
+      llvm::cl::desc("default pulse calibrations MLIR file"),
+      llvm::cl::value_desc("filename"), llvm::cl::init("")};
+
+  void loadPulseCals(mlir::quir::CallCircuitOp callCircuitOp, FuncOp funcOp);
+  void loadPulseCals(mlir::quir::CallGateOp callGateOp,
+                     mlir::quir::CallCircuitOp callCircuitOp, FuncOp funcOp);
+  void loadPulseCals(mlir::quir::BuiltinCXOp CXOp,
+                     mlir::quir::CallCircuitOp callCircuitOp, FuncOp funcOp);
+  void loadPulseCals(mlir::quir::Builtin_UOp UOp,
+                     mlir::quir::CallCircuitOp callCircuitOp, FuncOp funcOp);
+  void loadPulseCals(mlir::quir::MeasureOp measureOp,
+                     mlir::quir::CallCircuitOp callCircuitOp, FuncOp funcOp);
+  void loadPulseCals(mlir::quir::BarrierOp barrierOp,
+                     mlir::quir::CallCircuitOp callCircuitOp, FuncOp funcOp);
+  void loadPulseCals(mlir::quir::DelayOp delayOp,
+                     mlir::quir::CallCircuitOp callCircuitOp, FuncOp funcOp);
+  void loadPulseCals(mlir::quir::ResetQubitOp resetOp,
+                     mlir::quir::CallCircuitOp callCircuitOp, FuncOp funcOp);
+
+  void addPulseCalToModule(FuncOp funcOp, mlir::pulse::SequenceOp sequenceOp);
+
+  // parse the pulse cals and add them to pulseCalsNameToSequenceMap
+  void parsePulseCalsSequenceOps(std::string &pulseCalsPath);
+  std::map<std::string, SequenceOp> pulseCalsNameToSequenceMap;
+
+  mlir::pulse::SequenceOp
+  mergePulseSequenceOps(std::vector<mlir::pulse::SequenceOp> &sequenceOps,
+                        std::string mergedSequenceOpName);
+  bool mergeAttributes(std::vector<mlir::pulse::SequenceOp> &sequenceOps,
+                       std::string attrName,
+                       std::vector<mlir::Attribute> &attrVector);
+  std::string getMangledName(std::string &gateName, std::set<uint32_t> &qubits);
+  std::string getMangledName(std::string &gateName, uint32_t qubit);
+  std::set<uint32_t> getQubitOperands(std::vector<Value> qubitOperands,
+                                      mlir::quir::CallCircuitOp callCircuitOp);
+
+  // TODO: move this function to Utils; it's used here and MergeCircuitsPass
+  static mlir::quir::CircuitOp
+  getCircuitOp(mlir::quir::CallCircuitOp callCircuitOp);
+};
+} // namespace mlir::pulse
+
+#endif // LOAD_PULSE_CALS_H

lib/Conversion/QUIRToPulse/CMakeLists.txt

@@ -12,6 +12,8 @@
 
 add_mlir_conversion_library(QUIRToPulse
 
+LoadPulseCals.cpp
+
 detail/TypeConversion.cpp
 
 ADDITIONAL_HEADER_DIRS