blob: aa009a4eac6af877e4e4dc005a2fd9abd19d2f2b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
#!/bin/bash
set -euxo pipefail
rm -rf /tmp/rustc-pgo
python3 ../x.py build --target=$PGO_HOST --host=$PGO_HOST \
--stage 2 library/std --rust-profile-generate=/tmp/rustc-pgo
RUSTC_BOOTSTRAP=1 ./build/$PGO_HOST/stage2/bin/rustc --edition=2018 \
--crate-type=lib ../library/core/src/lib.rs
# Download and build a single-file stress test benchmark on perf.rust-lang.org.
function pgo_perf_benchmark {
local PERF=1e19fc4c6168d2f7596e512f42f358f245d8f09d
local github_prefix=https://raw.githubusercontent.com/rust-lang/rustc-perf/$PERF
local name=$1
local edition=$2
curl -o /tmp/$name.rs $github_prefix/collector/benchmarks/$name/src/lib.rs
RUSTC_BOOTSTRAP=1 ./build/$PGO_HOST/stage2/bin/rustc --edition=$edition \
--crate-type=lib /tmp/$name.rs
}
pgo_perf_benchmark externs 2018
pgo_perf_benchmark ctfe-stress-4 2018
pgo_perf_benchmark inflate 2015
cp -pri ../src/tools/cargo /tmp/cargo
# The Cargo repository does not have a Cargo.lock in it, as it relies on the
# lockfile already present in the rust-lang/rust monorepo. This decision breaks
# down when Cargo is built outside the monorepo though (like in this case),
# resulting in a build without any dependency locking.
#
# To ensure Cargo is built with locked dependencies even during PGO profiling
# the following command copies the monorepo's lockfile into the Cargo temporary
# directory. Cargo will *not* keep that lockfile intact, as it will remove all
# the dependencies Cargo itself doesn't rely on. Still, it will prevent
# building Cargo with arbitrary dependency versions.
#
# See #81378 for the bug that prompted adding this.
cp -p ../Cargo.lock /tmp/cargo
# Build cargo (with some flags)
function pgo_cargo {
RUSTC=./build/$PGO_HOST/stage2/bin/rustc \
./build/$PGO_HOST/stage0/bin/cargo $@ \
--manifest-path /tmp/cargo/Cargo.toml
}
# Build a couple different variants of Cargo
CARGO_INCREMENTAL=1 pgo_cargo check
echo 'pub fn barbarbar() {}' >> /tmp/cargo/src/cargo/lib.rs
CARGO_INCREMENTAL=1 pgo_cargo check
touch /tmp/cargo/src/cargo/lib.rs
CARGO_INCREMENTAL=1 pgo_cargo check
pgo_cargo build --release
# Merge the profile data we gathered
./build/$PGO_HOST/llvm/bin/llvm-profdata \
merge -o /tmp/rustc-pgo.profdata /tmp/rustc-pgo
# This produces the actual final set of artifacts.
$@ --rust-profile-use=/tmp/rustc-pgo.profdata
|
