quantrs2_sim/jit_compilation/
types.rs

1//! Type definitions for JIT compilation
2//!
3//! This module provides types and enums for the JIT compilation system.
4
5use scirs2_core::ndarray::Array2;
6use scirs2_core::Complex64;
7use std::fmt;
8use std::hash::{Hash, Hasher};
9use std::time::{Duration, Instant};
10
11use crate::circuit_interfaces::{InterfaceGate, InterfaceGateType};
12
13/// JIT compilation configuration
14#[derive(Debug, Clone)]
15pub struct JITConfig {
16    /// Minimum frequency threshold for compilation
17    pub compilation_threshold: usize,
18    /// Maximum number of gates in a compilable sequence
19    pub max_sequence_length: usize,
20    /// Enable pattern analysis and optimization
21    pub enable_pattern_analysis: bool,
22    /// Enable adaptive compilation thresholds
23    pub enable_adaptive_thresholds: bool,
24    /// Maximum cache size for compiled sequences
25    pub max_cache_size: usize,
26    /// Enable runtime profiling for optimization
27    pub enable_runtime_profiling: bool,
28    /// JIT compilation optimization level
29    pub optimization_level: JITOptimizationLevel,
30    /// Enable parallel compilation
31    pub enable_parallel_compilation: bool,
32}
33
34impl Default for JITConfig {
35    fn default() -> Self {
36        Self {
37            compilation_threshold: 10,
38            max_sequence_length: 20,
39            enable_pattern_analysis: true,
40            enable_adaptive_thresholds: true,
41            max_cache_size: 1000,
42            enable_runtime_profiling: true,
43            optimization_level: JITOptimizationLevel::Aggressive,
44            enable_parallel_compilation: true,
45        }
46    }
47}
48
49/// JIT optimization levels
50#[derive(Debug, Clone, Copy, PartialEq, Eq)]
51pub enum JITOptimizationLevel {
52    /// No optimization
53    None,
54    /// Basic optimizations (constant folding, dead code elimination)
55    Basic,
56    /// Advanced optimizations (loop unrolling, vectorization)
57    Advanced,
58    /// Aggressive optimizations (inline expansion, specialized paths)
59    Aggressive,
60}
61
62/// Gate sequence pattern for compilation
63#[derive(Debug, Clone, PartialEq, Eq)]
64pub struct GateSequencePattern {
65    /// Gate types in the sequence
66    pub gate_types: Vec<InterfaceGateType>,
67    /// Target qubits for each gate
68    pub target_qubits: Vec<Vec<usize>>,
69    /// Sequence hash for fast lookup
70    pub hash: u64,
71    /// Usage frequency
72    pub frequency: usize,
73    /// Last used timestamp
74    pub last_used: Instant,
75    /// Compilation status
76    pub compilation_status: CompilationStatus,
77}
78
79impl Hash for GateSequencePattern {
80    fn hash<H: Hasher>(&self, state: &mut H) {
81        self.gate_types.hash(state);
82        self.target_qubits.hash(state);
83    }
84}
85
86/// Compilation status for gate sequences
87#[derive(Debug, Clone, Copy, PartialEq, Eq)]
88pub enum CompilationStatus {
89    /// Not yet compiled
90    NotCompiled,
91    /// Currently being compiled
92    Compiling,
93    /// Successfully compiled
94    Compiled,
95    /// Compilation failed
96    Failed,
97    /// Compiled and optimized
98    Optimized,
99}
100
101/// Compiled gate sequence
102#[derive(Debug, Clone)]
103pub struct CompiledGateSequence {
104    /// Original pattern
105    pub pattern: GateSequencePattern,
106    /// Compiled function pointer (simulation only)
107    pub compiled_function: CompiledFunction,
108    /// Compilation time
109    pub compilation_time: Duration,
110    /// Runtime performance statistics
111    pub performance_stats: JITPerformanceStats,
112    /// Memory usage
113    pub memory_usage: usize,
114    /// Optimization flags applied
115    pub optimizations: Vec<JITOptimization>,
116}
117
118/// Compiled function representation
119#[derive(Debug, Clone)]
120pub enum CompiledFunction {
121    /// Native machine code (placeholder for actual implementation)
122    NativeCode {
123        code_size: usize,
124        entry_point: usize,
125    },
126    /// Optimized interpreter bytecode
127    Bytecode {
128        instructions: Vec<BytecodeInstruction>,
129    },
130    /// Specialized matrix operations
131    MatrixOps { operations: Vec<MatrixOperation> },
132    /// SIMD-optimized operations
133    SIMDOps {
134        vectorized_ops: Vec<VectorizedOperation>,
135    },
136}
137
138/// JIT bytecode instructions
139#[derive(Debug, Clone)]
140pub enum BytecodeInstruction {
141    /// Apply single-qubit gate
142    ApplySingleQubit {
143        gate_type: InterfaceGateType,
144        target: usize,
145    },
146    /// Apply two-qubit gate
147    ApplyTwoQubit {
148        gate_type: InterfaceGateType,
149        control: usize,
150        target: usize,
151    },
152    /// Apply multi-qubit gate
153    ApplyMultiQubit {
154        gate_type: InterfaceGateType,
155        targets: Vec<usize>,
156    },
157    /// Fused operation
158    FusedOperation { operation: FusedGateOperation },
159    /// Memory prefetch hint
160    Prefetch { address_pattern: PrefetchPattern },
161    /// Barrier/synchronization
162    Barrier,
163}
164
165/// Matrix operation for compilation
166#[derive(Debug, Clone)]
167pub struct MatrixOperation {
168    /// Operation type
169    pub op_type: MatrixOpType,
170    /// Target qubits
171    pub targets: Vec<usize>,
172    /// Matrix elements (if small enough to inline)
173    pub matrix: Option<Array2<Complex64>>,
174    /// Matrix computation function
175    pub compute_matrix: MatrixComputeFunction,
176}
177
178/// Matrix operation types
179#[derive(Debug, Clone)]
180pub enum MatrixOpType {
181    /// Direct matrix multiplication
182    DirectMult,
183    /// Kronecker product
184    KroneckerProduct,
185    /// Tensor contraction
186    TensorContraction,
187    /// Sparse matrix operation
188    SparseOperation,
189}
190
191/// Matrix computation function
192#[derive(Debug, Clone)]
193pub enum MatrixComputeFunction {
194    /// Precomputed matrix
195    Precomputed(Array2<Complex64>),
196    /// Runtime computation
197    Runtime(String), // Function identifier
198    /// Parameterized computation
199    Parameterized {
200        template: Array2<Complex64>,
201        param_indices: Vec<usize>,
202    },
203}
204
205/// Vectorized operation for SIMD
206#[derive(Debug, Clone)]
207pub struct VectorizedOperation {
208    /// SIMD instruction type
209    pub instruction: SIMDInstruction,
210    /// Data layout requirements
211    pub layout: SIMDLayout,
212    /// Vector length
213    pub vector_length: usize,
214    /// Parallelization factor
215    pub parallel_factor: usize,
216}
217
218/// SIMD instruction types
219#[derive(Debug, Clone)]
220pub enum SIMDInstruction {
221    /// Vectorized complex multiplication
222    ComplexMul,
223    /// Vectorized complex addition
224    ComplexAdd,
225    /// Vectorized rotation
226    Rotation,
227    /// Vectorized tensor product
228    TensorProduct,
229    /// Vectorized gate application
230    GateApplication,
231}
232
233/// SIMD data layout
234#[derive(Debug, Clone)]
235pub enum SIMDLayout {
236    /// Array of structures (`AoS`)
237    ArrayOfStructures,
238    /// Structure of arrays (`SoA`)
239    StructureOfArrays,
240    /// Interleaved real/imaginary
241    Interleaved,
242    /// Separate real/imaginary arrays
243    Separate,
244}
245
246/// Fused gate operation
247#[derive(Debug, Clone)]
248pub struct FusedGateOperation {
249    /// Component gates
250    pub gates: Vec<InterfaceGate>,
251    /// Fused matrix
252    pub fused_matrix: Array2<Complex64>,
253    /// Target qubits for the fused operation
254    pub targets: Vec<usize>,
255    /// Optimization level applied
256    pub optimization_level: JITOptimizationLevel,
257}
258
259/// Prefetch pattern for memory optimization
260#[derive(Debug, Clone)]
261pub enum PrefetchPattern {
262    /// Sequential access
263    Sequential { stride: usize },
264    /// Strided access
265    Strided { stride: usize, count: usize },
266    /// Sparse access
267    Sparse { indices: Vec<usize> },
268    /// Block access
269    Block { base: usize, size: usize },
270}
271
272/// JIT performance statistics
273#[derive(Debug, Clone)]
274pub struct JITPerformanceStats {
275    /// Execution count
276    pub execution_count: usize,
277    /// Total execution time
278    pub total_execution_time: Duration,
279    /// Average execution time
280    pub average_execution_time: Duration,
281    /// Best execution time
282    pub best_execution_time: Duration,
283    /// Cache hit ratio
284    pub cache_hit_ratio: f64,
285    /// Memory bandwidth utilization
286    pub memory_bandwidth: f64,
287    /// CPU utilization
288    pub cpu_utilization: f64,
289    /// Performance improvement over interpreted
290    pub speedup_factor: f64,
291}
292
293impl Default for JITPerformanceStats {
294    fn default() -> Self {
295        Self {
296            execution_count: 0,
297            total_execution_time: Duration::new(0, 0),
298            average_execution_time: Duration::new(0, 0),
299            best_execution_time: Duration::from_secs(u64::MAX),
300            cache_hit_ratio: 0.0,
301            memory_bandwidth: 0.0,
302            cpu_utilization: 0.0,
303            speedup_factor: 1.0,
304        }
305    }
306}
307
308/// JIT optimization techniques applied
309#[derive(Debug, Clone, Copy, PartialEq, Eq)]
310pub enum JITOptimization {
311    /// Constant folding
312    ConstantFolding,
313    /// Dead code elimination
314    DeadCodeElimination,
315    /// Loop unrolling
316    LoopUnrolling,
317    /// Vectorization
318    Vectorization,
319    /// Inline expansion
320    InlineExpansion,
321    /// Gate fusion
322    GateFusion,
323    /// Memory layout optimization
324    MemoryLayoutOptimization,
325    /// Instruction scheduling
326    InstructionScheduling,
327    /// Register allocation
328    RegisterAllocation,
329    /// Strength reduction
330    StrengthReduction,
331}
332
333/// Optimization suggestions
334#[derive(Debug, Clone, Copy, PartialEq, Eq)]
335pub enum OptimizationSuggestion {
336    /// Gate fusion optimization
337    GateFusion,
338    /// Vectorization optimization
339    Vectorization,
340    /// Constant folding optimization
341    ConstantFolding,
342    /// Loop unrolling optimization
343    LoopUnrolling,
344    /// Memory layout optimization
345    MemoryLayoutOptimization,
346    /// Instruction scheduling optimization
347    InstructionScheduling,
348}
349
350/// Compilation priority levels
351#[derive(Debug, Clone, Copy, PartialEq, Eq)]
352pub enum CompilationPriority {
353    /// Low priority
354    Low,
355    /// Medium priority
356    Medium,
357    /// High priority
358    High,
359    /// Critical priority
360    Critical,
361}
362
363/// JIT benchmark results
364#[derive(Debug, Clone)]
365pub struct JITBenchmarkResults {
366    /// Total number of gate sequences tested
367    pub total_sequences: usize,
368    /// Number of sequences that were compiled
369    pub compiled_sequences: usize,
370    /// Number of sequences that were interpreted
371    pub interpreted_sequences: usize,
372    /// Average compilation time
373    pub average_compilation_time: Duration,
374    /// Average execution time for compiled sequences
375    pub average_execution_time_compiled: Duration,
376    /// Average execution time for interpreted sequences
377    pub average_execution_time_interpreted: Duration,
378    /// Speedup factor (interpreted / compiled)
379    pub speedup_factor: f64,
380    /// Compilation success rate
381    pub compilation_success_rate: f64,
382    /// Memory usage reduction
383    pub memory_usage_reduction: f64,
384}
385
386impl fmt::Display for JITBenchmarkResults {
387    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
388        writeln!(f, "JIT Compilation Benchmark Results:")?;
389        writeln!(f, "  Total sequences: {}", self.total_sequences)?;
390        writeln!(f, "  Compiled sequences: {}", self.compiled_sequences)?;
391        writeln!(f, "  Interpreted sequences: {}", self.interpreted_sequences)?;
392        writeln!(
393            f,
394            "  Average compilation time: {:?}",
395            self.average_compilation_time
396        )?;
397        writeln!(
398            f,
399            "  Average execution time (compiled): {:?}",
400            self.average_execution_time_compiled
401        )?;
402        writeln!(
403            f,
404            "  Average execution time (interpreted): {:?}",
405            self.average_execution_time_interpreted
406        )?;
407        writeln!(f, "  Speedup factor: {:.2}x", self.speedup_factor)?;
408        writeln!(
409            f,
410            "  Compilation success rate: {:.1}%",
411            self.compilation_success_rate * 100.0
412        )?;
413        write!(
414            f,
415            "  Memory usage reduction: {:.1}%",
416            self.memory_usage_reduction * 100.0
417        )
418    }
419}
quantrs2_sim/jit_compilation/types.rs

quantrs2_sim/jit_compilation/
types.rs
