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Refactor LoopCollectCompiler: simplify aggregation function call handling, optimize register allocation, streamline loop source setup, and update function arguments for consistency.

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This commit is contained in:
Tim Voronov
2025-07-26 15:18:22 -04:00
parent 7039a97417
commit 74f3452ec4
2 changed files with 11 additions and 9 deletions
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6
pkg/compiler/internal/loop_collect.go
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@@ -116,8 +116,14 @@ func (c *LoopCollectCompiler) compileLoop(spec *core.Collector) {
doInit := spec.HasGrouping() || !spec.HasAggregation()
if doInit {
if loop.Allocate {
// Move the collector to the next loop source
c.ctx.Emitter.EmitMove(loop.Src, spec.Destination())
} else {
// We do not control the source of the loop, so we just set it to the destination
loop.Src = spec.Destination()
}
loop.EmitInitialization(c.ctx.Registers, c.ctx.Emitter, c.ctx.Loops.Depth())
}

10
pkg/compiler/internal/loop_collect_agg.go
View File

@@ -177,7 +177,6 @@ func (c *LoopCollectCompiler) finalizeGlobalAggregation(spec *core.Collector) {
c.ctx.Registers.Free(prevLoop.Src)
// Create a new loop with 1 iteration only to process the aggregation
c.ctx.Symbols.EnterScope()
loop := c.ctx.Loops.NewLoop(core.ForInLoop, core.NormalLoop, prevLoop.Distinct)
c.ctx.Loops.Push(loop)
@@ -199,19 +198,16 @@ func (c *LoopCollectCompiler) finalizeGlobalAggregation(spec *core.Collector) {
// Initialize the loop
loop.EmitInitialization(c.ctx.Registers, c.ctx.Emitter, c.ctx.Loops.Depth())
// Process the aggregation function calls using the values from the previous loop's collector
c.compileGlobalAggregationFuncCalls(spec, prevLoop.Dst)
// Free the previous loop's destination register
c.ctx.Registers.Free(prevLoop.Dst)
c.compileGlobalAggregationFuncCalls(spec)
}
// compileGlobalAggregationFuncCalls processes the aggregation function calls for the selectors.
// It loads the arguments from the aggregator, calls the aggregation functions,
// and assigns the results to local variables.
// It also handles the case where there are no records in the aggregator by loading NONE values.
func (c *LoopCollectCompiler) compileGlobalAggregationFuncCalls(spec *core.Collector, aggregator vm.Operand) {
func (c *LoopCollectCompiler) compileGlobalAggregationFuncCalls(spec *core.Collector) {
// Gets the number of records in the accumulator
aggregator := spec.Destination()
cond := c.ctx.Registers.Allocate(core.Temp)
c.ctx.Emitter.EmitAB(vm.OpLength, cond, aggregator)
zero := loadConstant(c.ctx, runtime.ZeroInt)