Merge pull request #447 from wesleywiser/compiler_team_triage_meeting_2019_10_31

[inside-rust] Add compiler team triage meeting post for 2019-10-31

Author: nikomatsakis

posts/inside-rust/2019-11-07-compiler-team-meeting.md

@@ -0,0 +1,43 @@
+---
+layout: post
+title: "2019-10-31 Compiler Team Triage Meeting"
+author: "Wesley Wiser"
+description: "2019-10-31 Compiler Team Triage Meeting"
+team: the compiler team <https://www.rust-lang.org/governance/teams/compiler>
+---
+
+The compiler team had our weekly triage meeting on 2019-10-31.
+You can find the [minutes](https://rust-lang.github.io/compiler-team/minutes/triage-meeting/2019-10-31/) on the [compiler-team](https://github.com/rust-lang/compiler-team) repository.
+Each week, we have general announcements from the team followed by check-ins from two of the compiler team working groups.
+
+# 2019-10-31
+
+## Announcments
+
+Rust 1.39 ships on Thursday!
+
+## Working group sync
+
+### [wg-pgo](https://rust-lang.github.io/compiler-team/working-groups/pgo/)
+
+- PGO is available in the stable compiler. Docs are in the rustc-guide and the rustc-book
+
+- Unfortunately we don't observe significant performance gains from applying it (except for tiny synthetic test cases).
+
+- [@michaelwoerister] asked for people to try PGO on irlo but haven't gotten a lot of feedback.
+
+- There is one interesting theory that Rust doesn't profit as much as C++ because it defaults to having fewer compilation units and thus can make better inlining decisions in the non-PGO case.
+
+- The working group will probably wind down as [@michaelwoerister] don't have time to pursue further and there are no actual known issues in the implementation.
+
+[Link to full discussion](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818/near/179539153)
+
+### [wg-pipelining](https://rust-lang.github.io/compiler-team/working-groups/pipelining/)
+
+- Pipelining support has shipped in Rust 1.38.
+
+- The working group is winding down.
+
+[Link to full discussion](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818/near/179539371)
+
+[@michaelwoerister]: https://github.com/michaelwoerister