liyuqian

diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 4998a7343..31e4e9220 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -904,6 +904,7 @@ config("optimize") {
   }
   ldflags = common_optimize_on_ldflags + lto_flags
   cflags += lto_flags
+  # cflags += ["-mllvm", "-enable-ml-inliner=release"]
 }

liyuqian

diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 4998a7343..29a07cbfe 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -904,6 +904,7 @@ config("optimize") {
   }
   ldflags = common_optimize_on_ldflags + lto_flags
   cflags += lto_flags
+  cflags += ["-Xclang", "-fembed-bitcode=all"]
 }

liyuqian

import 'package:flutter/material.dart';

void main() {
  runApp(CacheMemTestApp());
}

class CacheMemTestApp extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return CacheMemTestAppState();

liyuqian

import 'dart:math';

void main() {
  const int deviceCount = 5;
  const double failRate = 0.5;
  const int sampleCount = 1000;
  
  final random = Random();
  int sum = 0;
  for (int i = 0; i < sampleCount; i += 1) {

liyuqian

# Number of samples to compute the mean. We try different n from 10, 20, ..., 90
n = seq(10, 90, 10)

# Number of means to compute the standard deviation of the mean
m = 30

set.seed(159)
# Generate a single random value from a "strange" distribution
gen.value <- function()
  sample(1:10, 1) +                               # Offset

liyuqian

diff --git a/packages/flutter_tools/lib/src/resident_runner.dart b/packages/flutter_tools/lib/src/resident_runner.dart
index 9008f0389b..a4fb521e6e 100644
--- a/packages/flutter_tools/lib/src/resident_runner.dart
+++ b/packages/flutter_tools/lib/src/resident_runner.dart
@@ -961,6 +961,13 @@ abstract class ResidentRunner {
     final List<FlutterView> views = await flutterDevices
       .first
       .vmService.getFlutterViews();
+
+    final Map<String, Object> memoryData = await flutterDevices.first.vmService.estimateRasterCacheMemory(

liyuqian

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',

liyuqian

// Demo how ScrollablePositionedList can handle big jump much faster than its ListView counterpart at
// https://gist.github.com/esDotDev/792425c2cdfef947ce514b8ab70511e6
import 'dart:developer';

import 'package:flutter/material.dart';
import 'package:scrollable_positioned_list/scrollable_positioned_list.dart';

class ScrollbarSpike extends StatefulWidget {
  @override
  _ScrollbarSpikeState createState() => _ScrollbarSpikeState();

liyuqian

Some public contributions to Flutter:

Framework

• Added a filterQuality parameter to texture #59966 (zljj0818) [06/2020]
• fix memory leak of android view #50111 (Stonekity) [05/2020]
• Add error message for flutter_gallery transitions_perf test. #47776 (linxuebin1990) [02/2020]
• support endless recorder for timeline #47419 [02/2020]

Engine

• Allow texture sampling quality control #18814 (zljj0818) [06/2020]

liyuqian

import 'package:flutter/material.dart';

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override