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fix(compiler): move projection attributes into constants

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We can save some memory by moving the `attrs` passed into the `projection` instruction into the constant pool.

(cherry picked from commit f0b28f6443)
This commit is contained in:
Kristiyan Kostadinov
2026-05-30 09:35:43 +02:00
committed by Pawel Kozlowski
parent 9f6fda6815
commit ae1c8a1f7a
6 changed files with 17 additions and 13 deletions
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packages/compiler-cli/test/compliance/test_cases/r3_compiler_compliance/components_and_directives/content_projection/ng_content_fallback.js
+2 -1
View File
@@ -1,5 +1,6 @@
const $_c0$ = [[["basic"]], "*", [["footer"]], [["structural"]]];
const $_c1$ = ["basic", "*", "footer", "structural"];
const $_c2$ = ["*ngIf", "hasStructural"];
function TestComponent_ProjectionFallback_0_Template(rf, ctx) {
if (rf & 1) {
@@ -46,7 +47,7 @@ function TestComponent_ng_content_6_ProjectionFallback_0_Template(rf, ctx) {
function TestComponent_ng_content_6_Template(rf, ctx) {
if (rf & 1) {
$r3$.ɵɵprojection(0, 3, ["*ngIf", "hasStructural"], TestComponent_ng_content_6_ProjectionFallback_0_Template, 2, 0);
$r3$.ɵɵprojection(0, 3, $_c2$, TestComponent_ng_content_6_ProjectionFallback_0_Template, 2, 0);
}
}
packages/compiler-cli/test/compliance/test_cases/r3_compiler_compliance/components_and_directives/content_projection/project_as_ng_content.js
+9 -8
View File
@@ -1,16 +1,17 @@
const _c0 = [[["", "card-title", ""]], [["", "card-content", ""]]];
const _c1 = ["[card-title]", "[card-content]"];
const _c2 = ["*"];
const $_c0$ = [[["", "card-title", ""]], [["", "card-content", ""]]];
const $_c1$ = ["[card-title]", "[card-content]"];
const $_c2$ = ["*"];
const $_c3$ = ["ngProjectAs", "[card-content]", 5, ["", "card-content", ""]];
// ...
selectors: [["card"]],
standalone: false,
ngContentSelectors: _c1,
ngContentSelectors: $_c1$,
decls: 3,
vars: 0,
template: function Card_Template(rf, ctx) {
if (rf & 1) {
i0.ɵɵprojectionDef(_c0);
i0.ɵɵprojectionDef($_c0$);
i0.ɵɵprojection(0);
i0.ɵɵtext(1, " --- ");
i0.ɵɵprojection(2, 1);
@@ -19,7 +20,7 @@ template: function Card_Template(rf, ctx) {
// ...
selectors: [["card-with-title"]],
standalone: false,
ngContentSelectors: _c2,
ngContentSelectors: $_c2$,
decls: 4,
vars: 0,
consts: [["ngProjectAs", "[card-title]", 5, ["", "card-title", ""]]],
@@ -29,7 +30,7 @@ template: function CardWithTitle_Template(rf, ctx) {
i0.ɵɵelementStart(0, "card")(1, "h1", 0);
i0.ɵɵtext(2, "Title");
i0.ɵɵelementEnd();
i0.ɵɵprojection(3, 0, ["ngProjectAs", "[card-content]", 5, ["", "card-content", ""]]);
i0.ɵɵprojection(3, 0, $_c3$);
i0.ɵɵelementEnd();
}
}
@@ -44,4 +45,4 @@ template: function App_Template(rf, ctx) {
i0.ɵɵtext(1, "content");
i0.ɵɵelementEnd();
}
}
}
packages/compiler-cli/test/compliance/test_cases/r3_view_compiler_template/self_closing_structural_directives.js
+3 -1
View File
@@ -1,3 +1,5 @@
const $_c1$ = ["*ngIf", "flag"];
function MyComponent_img_2_Template(rf, ctx) {
if (rf & 1) {
i0.ɵɵi18nStart(0, 0, 1);
@@ -34,7 +36,7 @@ function MyComponent_ng_container_5_Template(rf, ctx) {
function MyComponent_ng_content_6_Template(rf, ctx) {
if (rf & 1) {
i0.ɵɵi18nStart(0, 0, 6);
i0.ɵɵprojection(1, 0, ["*ngIf", "flag"]);
i0.ɵɵprojection(1, 0, $_c1$);
i0.ɵɵi18nEnd();
}
}
packages/compiler/src/template/pipeline/ir/src/ops/create.ts
+1 -1
View File
@@ -1137,7 +1137,7 @@ export interface ProjectionOp extends Op<CreateOp>, ConsumesSlotOpTrait {
projectionSlotIndex: number;
attributes: null | o.LiteralArrayExpr;
attributes: null | o.Expression;
localRefs: string[];
packages/compiler/src/template/pipeline/src/instruction.ts
+1 -1
View File
@@ -393,7 +393,7 @@ export function projectionDef(def: o.Expression | null): ir.CreateOp {
export function projection(
slot: number,
projectionSlotIndex: number,
attributes: o.LiteralArrayExpr | null,
attributes: o.Expression | null,
fallbackFnName: string | null,
fallbackDecls: number | null,
fallbackVars: number | null,
packages/compiler/src/template/pipeline/src/phases/const_collection.ts
+1 -1
View File
@@ -45,7 +45,7 @@ export function collectElementConsts(job: CompilationJob): void {
if (attributes !== undefined) {
const attrArray = serializeAttributes(attributes);
if (attrArray.entries.length > 0) {
op.attributes = attrArray;
op.attributes = job.pool.getConstLiteral(attrArray, true);
}
}
} else if (ir.isElementOrContainerOp(op)) {