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Commit | Line | Data |
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fc512014 XL |
1 | #!/bin/bash |
2 | ||
3 | set -euxo pipefail | |
4 | ||
fc512014 XL |
5 | rm -rf /tmp/rustc-pgo |
6 | ||
7 | python2.7 ../x.py build --target=$PGO_HOST --host=$PGO_HOST \ | |
8 | --stage 2 library/std --rust-profile-generate=/tmp/rustc-pgo | |
9 | ||
6a06907d | 10 | RUSTC_BOOTSTRAP=1 ./build/$PGO_HOST/stage2/bin/rustc --edition=2018 \ |
fc512014 XL |
11 | --crate-type=lib ../library/core/src/lib.rs |
12 | ||
13 | # Download and build a single-file stress test benchmark on perf.rust-lang.org. | |
14 | function pgo_perf_benchmark { | |
15 | local PERF=e095f5021bf01cf3800f50b3a9f14a9683eb3e4e | |
16 | local github_prefix=https://raw.githubusercontent.com/rust-lang/rustc-perf/$PERF | |
17 | local name=$1 | |
18 | curl -o /tmp/$name.rs $github_prefix/collector/benchmarks/$name/src/lib.rs | |
6a06907d XL |
19 | |
20 | RUSTC_BOOTSTRAP=1 ./build/$PGO_HOST/stage2/bin/rustc --edition=2018 \ | |
21 | --crate-type=lib /tmp/$name.rs | |
fc512014 XL |
22 | } |
23 | ||
24 | pgo_perf_benchmark externs | |
25 | pgo_perf_benchmark ctfe-stress-4 | |
26 | ||
27 | cp -pri ../src/tools/cargo /tmp/cargo | |
28 | ||
5869c6ff XL |
29 | # The Cargo repository does not have a Cargo.lock in it, as it relies on the |
30 | # lockfile already present in the rust-lang/rust monorepo. This decision breaks | |
31 | # down when Cargo is built outside the monorepo though (like in this case), | |
32 | # resulting in a build without any dependency locking. | |
33 | # | |
34 | # To ensure Cargo is built with locked dependencies even during PGO profiling | |
35 | # the following command copies the monorepo's lockfile into the Cargo temporary | |
36 | # directory. Cargo will *not* keep that lockfile intact, as it will remove all | |
37 | # the dependencies Cargo itself doesn't rely on. Still, it will prevent | |
38 | # building Cargo with arbitrary dependency versions. | |
39 | # | |
40 | # See #81378 for the bug that prompted adding this. | |
41 | cp -p ../Cargo.lock /tmp/cargo | |
42 | ||
fc512014 XL |
43 | # Build cargo (with some flags) |
44 | function pgo_cargo { | |
45 | RUSTC=./build/$PGO_HOST/stage2/bin/rustc \ | |
46 | ./build/$PGO_HOST/stage0/bin/cargo $@ \ | |
47 | --manifest-path /tmp/cargo/Cargo.toml | |
48 | } | |
49 | ||
50 | # Build a couple different variants of Cargo | |
51 | CARGO_INCREMENTAL=1 pgo_cargo check | |
52 | echo 'pub fn barbarbar() {}' >> /tmp/cargo/src/cargo/lib.rs | |
53 | CARGO_INCREMENTAL=1 pgo_cargo check | |
54 | touch /tmp/cargo/src/cargo/lib.rs | |
55 | CARGO_INCREMENTAL=1 pgo_cargo check | |
56 | pgo_cargo build --release | |
57 | ||
58 | # Merge the profile data we gathered | |
59 | ./build/$PGO_HOST/llvm/bin/llvm-profdata \ | |
60 | merge -o /tmp/rustc-pgo.profdata /tmp/rustc-pgo | |
61 | ||
62 | # This produces the actual final set of artifacts. | |
63 | $@ --rust-profile-use=/tmp/rustc-pgo.profdata |