Struct JitCompiler 

pub struct JitCompiler { /* private fields */ }

JIT WGSL compiler for kernel fusion

Phase 1 MVP: Template-based code generation for common patterns. Future: Full SQL AST → WGSL compilation in Phase 2.

Implementations

impl JitCompiler

pub fn new() -> Self

Create a new JIT compiler with shader cache

pub fn generate_fused_filter_sum( &self, filter_threshold: i32, filter_op: &str, ) -> String

Generate fused filter+sum kernel

Fuses WHERE clause with SUM aggregation in single GPU pass.

Arguments

• filter_threshold - Threshold value for filter (e.g., WHERE value > 1000)
• filter_op - Filter operator (“gt”, “lt”, “eq”, “gte”, “lte”)

Returns

WGSL shader source code for fused kernel

Example

let shader = compiler.generate_fused_filter_sum(1000, "gt");
// Generates: WHERE value > 1000, SUM(value) in single pass

pub fn compile_fused_filter_sum( &self, device: &Device, filter_threshold: i32, filter_op: &str, ) -> Arc<ShaderModule>

Compile and cache fused filter+sum kernel

Arguments

• device - GPU device for compilation
• filter_threshold - Filter threshold value
• filter_op - Filter operator

Returns

Arc reference to compiled shader module (cached for reuse)

pub fn cache_stats(&self) -> (usize, usize)

Get cache statistics (size, capacity)

Trait Implementations

impl Default for JitCompiler

fn default() -> Self

Returns the “default value” for a type.