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bors
41501a6b03 Auto merge of #67437 - matthew-healy:skip-llvm-rebuild, r=Mark-Simulacrum 
Add LLVM `skip-rebuild` option to `x.py`

This PR reimplements parts of @Walther's work from #65848, and closes #65612.

I decided not to implement the [arguments to override this setting](https://github.com/rust-lang/rust/issues/65612#issuecomment-544247546) in this PR. If there's strong feeling that this change shouldn't be merged without the overrides then I'm happy to close this until I've had a chance to add them in. Otherwise I'll aim to submit a second PR with those this weekend.

I'd have liked to have tested the change in `native.rs`, but there didn't seem to be any existing test infrastructure. I ran this a few times manually and it _worked on my machine_ though... 😬
 2019-12-27 10:58:57 +00:00
bors
8f5f8f916f Auto merge of #67192 - oli-obk:const_zst_addr, r=RalfJung,varkor 
Various const eval and pattern matching ICE fixes

r? @RalfJung
cc @spastorino

This PR does not change existing behaviour anymore and just fixes a bunch of ICEs reachable from user code (sometimes even on stable via obscure union transmutes).
 2019-12-27 07:38:52 +00:00
Sebastien Marie
98d8326cfc add comment for rustfmt in config.toml.example 2019-12-27 05:32:12 +00:00
Sebastien Marie
b817a68391 allow rustfmt key in [build] section 2019-12-27 05:32:11 +00:00
bors
a04c789f69 Auto merge of #66936 - cjgillot:hirene-expr, r=Zoxc 
Allocate HIR on an arena 2/4 -- Expr & Pat

This is the second PR in the series started by #66931

This time, commits don't really make sense on their own.
They are mostly split by type of compile error.

The additional diff is here: https://github.com/cjgillot/rust/compare/hirene-preamble...hirene-expr
 2019-12-27 01:40:41 +00:00
Camille GILLOT
fb100e5ddc Move arena_vec inside lowering. 2019-12-26 23:40:50 +01:00
Camille GILLOT
75632c5ffe Remove some type information. 2019-12-26 23:40:13 +01:00
Camille GILLOT
1984ec5d20 Fewer calls to arena.alloc. 2019-12-26 23:39:14 +01:00
Camille GILLOT
8284035372 Fallout in other crates. 2019-12-26 23:38:46 +01:00
Camille GILLOT
58b908d09c Lowering for hir::Expr. 2019-12-26 23:36:12 +01:00
Camille GILLOT
52e9825ba8 Visit for hir::Expr. 2019-12-26 23:36:12 +01:00
Camille GILLOT
2b1cfe5b5b Syntax for hir::Expr. 2019-12-26 23:36:12 +01:00
Matthew Healy
e44fc4577f Skip LLVM rebuild when skip-rebuild is true 2019-12-26 22:19:18 +00:00
Matthew Healy
2297a8b199 Parse llvm_skip_rebuild into Config 2019-12-26 22:16:42 +00:00
Matthew Healy
1a01f97785 Document LLVM skip-rebuild config.toml option 2019-12-26 22:16:41 +00:00
Oliver Scherer
f65a91eb47 Make ui test bitwidth independent 2019-12-26 22:50:18 +01:00
Oliver Scherer
12a4c2ca18 Fix rebase fallout 2019-12-26 22:50:18 +01:00
Oliver Scherer
aaffe12453 Use the targetted const eval functions 2019-12-26 22:50:18 +01:00
Oliver Scherer
b476344ccc Reintroduce the recursion comment 2019-12-26 22:50:18 +01:00
Oliver Scherer
1531c3937b Documentation nit 2019-12-26 22:50:18 +01:00
Oliver Scherer
20c1b3fb49 Add a const_eval helper to InterpCx 2019-12-26 22:50:18 +01:00
Oliver Scherer
1acbf4b802 Early abort instead of building up zero sized values 2019-12-26 22:50:18 +01:00
Oliver Scherer
95205518dd Explain why const_eval is ok here 2019-12-26 22:50:17 +01:00
Oliver Scherer
0e3fafaea7 Typo 2019-12-26 22:50:17 +01:00
Oliver Scherer
72ebce0e1b Remove unintended noisy log statement 2019-12-26 22:50:17 +01:00
Oliver Scherer
6937ca2c90 Explain the currently necessary existance of TransmuteSizeDiff 2019-12-26 22:50:17 +01:00
Oliver Scherer
cb8d1c3c65 Explain what we are doing with parameter environments for statics 2019-12-26 22:50:17 +01:00
Oliver Scherer
8a88ff1006 Comments should start capitalized and end in a period 2019-12-26 22:50:17 +01:00
Oliver Scherer
41d58185dd Explain ParamEnv::reveal_all usage 2019-12-26 22:50:17 +01:00
Oliver Scherer
6b651b1a88 Add regression test for ZST statics being allowed to "read" from themselves 2019-12-26 22:50:17 +01:00
Oliver Scherer
a7a011d2fa Immediately evaluate and validate constants when we want them as operands 2019-12-26 22:50:17 +01:00
Oliver Scherer
0e969b73f6 Interning even happens when validation of a constant fails 2019-12-26 22:50:17 +01:00
Oliver Scherer
a0bd1a695d Prevent an ICE on invalid transmutes 2019-12-26 22:50:16 +01:00
Oliver Scherer
13694de4a2 Comment on a few odd things that we should look at 2019-12-26 22:50:16 +01:00
Oliver Scherer
bb1ecee5b6 Simplify force_allocation_maybe_sized 2019-12-26 22:50:16 +01:00
Oliver Scherer
b5b5258d74 Retire to_ptr which should already have no users but still kept getting new ones 2019-12-26 22:50:14 +01:00
Oliver Scherer
1e40681f50 Don't ICE on the use of integer addresses for ZST constants in pattern matching 2019-12-26 22:46:22 +01:00
Martin Habovstiak
2c796ee77c Use NonNull in slice::Iter and slice::IterMut. 
`ptr` of `slice::Iter` and `slice::IterMut` can never be null, but this
fact wasn't exploited for layout optimizations. By changing `ptr` from
`*<mutability> T` to `NonNull<T>`, the compiler can now optimize layout
of `Option<Iter<'a, T>>`.
 2019-12-26 20:18:31 +01:00
Stein Somers
e3c814e623 prune ill-conceived BTreeMap iter_mut assertion and test more 2019-12-26 18:26:57 +01:00
Mark Rousskov
9c0f3f7f2a Document safety of Path casting 2019-12-26 12:12:42 -05:00
bors
3e0a1c0910 Auto merge of #67592 - matthewjasper:cleanup-match, r=Centril 
Prepare for lowering or-patterns

This is probably best reviewed commit-by-commit.

* Rustfmt `rustc_mir::build::{self, matches}`
* Remove `-Znll-dont-emit-read-for-match`
* Split `match_expr` into smaller functions
* Feature gate or-patterns in const contexts

cc https://github.com/rust-lang/rust/issues/54883

r? @Centril
 2019-12-26 16:44:52 +00:00
Dario Gonzalez
915686d069 Implement padding for IpAddr without heap alloc 2019-12-26 08:22:59 -08:00
Christian Poveda
be9a3c60a3
Update .mailmap 2019-12-26 10:32:26 -05:00
Oliver Scherer
097e14d19d Treat extern statics just like statics in the "const pointer to static" representation 2019-12-26 14:50:40 +01:00
Matthew Kraai
2f43313834 Convert collapsed to shortcut reference links 2019-12-26 05:27:55 -08:00
bors
3ac40b69c7 Auto merge of #67327 - oli-obk:cleanup, r=RalfJung 
Split up `const_eval.rs`

Fixes #67316

r? @RalfJung
 2019-12-26 13:15:05 +00:00
Matthew Kraai
21e636f188 Remove redundant link texts 2019-12-26 05:04:46 -08:00
Oliver Scherer
07df1479e5 Rebase fallout 2019-12-26 12:11:12 +01:00
Oliver Scherer
7d5f36a1e5 A cycle error on a diverging function is now a const stack overflow again 2019-12-26 12:11:12 +01:00
Oliver Scherer
2e66f85111 Bail out before running the query 2019-12-26 12:11:12 +01:00