Alexander Markov
467c98b846
This change introduces handling of protobufs while doing type flow analysis. Metadata in protobuf message classes is updated dynamically according to the set of called accessors, invalidating and rebuilding TFA summaries as needed. Previously, protobuf-aware tree shaker required the 2nd run of TFA in order to do the actual tree-shaking after protobuf messages are pruned. This significantly increases compilation time. AOT compilation time of a large app (--from-dill): 274s -> 152s New tree shaker is available in kernel compilers under the flag --protobuf-tree-shaker-v2. Issue https://github.com/dart-lang/sdk/issues/42442 Fixes https://github.com/dart-lang/sdk/issues/40785 Change-Id: I4347896737b9b0f7407b845e614dda9ba7621921 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152100 Commit-Queue: Alexander Markov <alexmarkov@google.com> Reviewed-by: Clement Skau <cskau@google.com> Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
131 lines
3.7 KiB
Bash
Executable File
131 lines
3.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
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# for details. All rights reserved. Use of this source code is governed by a
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# BSD-style license that can be found in the LICENSE file.
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# Script for generating AOT snapshot using Dart 2 pipeline: Fasta with
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# strong mode enabled, AOT specific Kernel-to-Kernel transformations and
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# Dart VM precompiler with strong mode semantics and reified generics.
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# Parse incoming arguments and extract the value of --packages option if any
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# was passed. Split options (--xyz) and non-options into two separate arrays.
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# All options will be passed to gen_snapshot, while --packages will be
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# passed to Fasta.
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set -e
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OPTIONS=()
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GEN_KERNEL_OPTIONS=()
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PACKAGES=
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BUILD_ASM=0
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ARGV=()
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for arg in "$@"; do
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case $arg in
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--packages=*)
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PACKAGES="$arg"
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;;
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--enable-asserts | \
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--null-safety | \
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--no-null-safety | \
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--enable-experiment=*)
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GEN_KERNEL_OPTIONS+=("$arg")
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OPTIONS+=("$arg")
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;;
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--tfa | \
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--no-tfa | \
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--protobuf-tree-shaker | \
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--protobuf-tree-shaker-v2 | \
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--gen-bytecode | \
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--no-gen-bytecode | \
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--bytecode-options=* | \
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--minimal-kernel | \
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--no-embed-sources | \
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-D* )
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GEN_KERNEL_OPTIONS+=("$arg")
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;;
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--build-assembly)
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BUILD_ASM=1
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;;
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-v*)
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set -x
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;;
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--*)
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OPTIONS+=("$arg")
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;;
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*)
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ARGV+=("$arg")
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;;
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esac
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done
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if [ "${#ARGV[@]}" -ne 2 ]; then
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echo "Usage: $0 [options] <source> <snapshot>"
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exit 1
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fi
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SOURCE_FILE="${ARGV[0]}"
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SNAPSHOT_FILE="${ARGV[1]}"
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if [ $BUILD_ASM -eq 1 ]; then
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GEN_SNAPSHOT_OPTION="--snapshot-kind=app-aot-assembly"
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GEN_SNAPSHOT_FILENAME="--assembly=${SNAPSHOT_FILE}.S"
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else
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GEN_SNAPSHOT_OPTION="--snapshot-kind=app-aot-elf"
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GEN_SNAPSHOT_FILENAME="--elf=${SNAPSHOT_FILE}"
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fi
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function follow_links() {
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file="$1"
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while [ -h "$file" ]; do
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# On Mac OS, readlink -f doesn't work.
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file="$(readlink "$file")"
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done
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echo "$file"
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}
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# Unlike $0, $BASH_SOURCE points to the absolute path of this file.
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PROG_NAME="$(follow_links "$BASH_SOURCE")"
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# Handle the case where dart-sdk/bin has been symlinked to.
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CUR_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"
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SDK_DIR="$CUR_DIR/../../.."
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if [[ `uname` == 'Darwin' ]]; then
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OUT_DIR="$SDK_DIR/xcodebuild"
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else
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OUT_DIR="$SDK_DIR/out"
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fi
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export DART_CONFIGURATION=${DART_CONFIGURATION:-ReleaseX64}
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BIN_DIR="$OUT_DIR/$DART_CONFIGURATION"
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DART="tools/sdks/dart-sdk/bin/dart"
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if [ ! -f "$DART" ]; then
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DART="$BIN_DIR/dart"
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fi
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# Step 1: Generate Kernel binary from the input Dart source.
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$DART \
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${DART_VM_FLAGS} \
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"${SDK_DIR}/pkg/vm/bin/gen_kernel.dart" \
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--platform "${BIN_DIR}/vm_platform_strong.dill" \
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--aot \
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"${GEN_KERNEL_OPTIONS[@]}" \
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$PACKAGES \
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-o "$SNAPSHOT_FILE.dill" \
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"$SOURCE_FILE"
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# Step 2: Generate snapshot from the Kernel binary.
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"$BIN_DIR"/gen_snapshot \
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"$GEN_SNAPSHOT_OPTION" \
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"$GEN_SNAPSHOT_FILENAME" \
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"${OPTIONS[@]}" \
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"$SNAPSHOT_FILE.dill"
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# Step 3: Assemble the assembly file into an ELF object.
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if [ $BUILD_ASM -eq 1 ]; then
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gcc -shared -o "$SNAPSHOT_FILE" "${SNAPSHOT_FILE}.S"
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fi
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