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7a1a40890d
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1143 Commits

Author SHA1 Message Date
Niko Matsakis
7a1a40890d Remove copy bindings from patterns. 2013-05-30 15:20:36 -04:00
Niko Matsakis
5209709e46 Fix matching of rvalues with destructors 
Fixes #4542.
 2013-05-30 15:20:36 -04:00
Niko Matsakis
c492a2126f Remove some spurious copies that are identified by later patches 2013-05-30 09:54:39 -04:00
Niko Matsakis
7dfb865339 Remove local_imm/local_mem since all variables are now by reference 2013-05-30 09:54:38 -04:00
Niko Matsakis
2616581863 Refactor helper routines to be less tied to match syntax 2013-05-30 09:47:15 -04:00
Niko Matsakis
dcd84901c6 Remove TrByImplicitRef and source field on datums 2013-05-30 09:47:14 -04:00
Björn Steinbrink
1720d9f663 Remove a bunch of unnecessary allocations and copies 2013-05-30 11:49:04 +02:00
Alex Crichton
4a5d887b58 Allow doc(hidden) and --test to disable doc linting 2013-05-30 01:02:55 -05:00
Alex Crichton
af995ce1e7 Make missing documentation linting more robust 
Add some more cases for warning about missing documentation, and also add a test
to make sure it doesn't die in the future.
 2013-05-30 01:02:55 -05:00
Patrick Walton
206ab89629 librustc: Stop reexporting the standard modules from prelude. 2013-05-29 19:04:53 -07:00
Patrick Walton
4e3d4b36dc libsyntax: Stop parsing mutable fields 2013-05-29 19:04:51 -07:00
Patrick Walton
aeda178011 librustc: Redo the unsafe checker and make unsafe methods not callable from safe code 2013-05-29 19:04:50 -07:00
bors
844b5cff36 auto merge of #6794 : thestinger/rust/align_zero, r=pcwalton 
This is unlikely to alter optimized codegen much but there's no point in downgrading the known alignment to 1.
 2013-05-29 07:32:06 -07:00
bors
d80642b519 auto merge of #6784 : nikomatsakis/rust/moves-into-borrowck, r=pcwalton 
Move the computation of what data is moved out of `liveness` and into `borrowck`. The resulting code is cleaner, since before we had a split distribution of responsibilities, and also this avoids having multiple implementations of the dataflow code. Liveness is still used to report warnings about useless writes. This will go away when we get the control-flow graph code landed (working on that).

Also adds borrow checker documentation.

Fixes #4384.
Required to support once fns and to properly fix closures (#2202).
First step to generalize our treatment of moves somewhat as well.
 2013-05-28 22:16:50 -07:00
bors
e3d0c1eb0e auto merge of #6731 : thomaslee/rust/issue-6575, r=pcwalton 
Fix for #6575. In the trans phase, rustc emits code for a function parameter that goes completely unused in the event the return type of the function in question happens to be an immediate.

This patch modifies rustc & parts of rustrt to ensure that the vestigial parameter is no longer present in compiled code.
 2013-05-28 17:37:57 -07:00
Niko Matsakis
f30b538929 Update documentation for moves 2013-05-28 20:22:15 -04:00
Niko Matsakis
e35db1ab35 Reconcile treatment of &mut with the docs 2013-05-28 20:22:15 -04:00
Niko Matsakis
bf1647c92a Reconcile docs and code, adding examples and adding RESTR_CLAIM 2013-05-28 20:22:15 -04:00
Niko Matsakis
329f7a17e2 Update docs on the formal basis of the borrow checker. 2013-05-28 20:22:15 -04:00
Niko Matsakis
5851d3242c Move checking for moves and initialization of local variables and patterns into 
borrow checker and generalize what moves are allowed. Fixes a nasty
bug or two in the pattern move checking code. Unifies dataflow code
used for initialization and other things. First step towards
once fns. Everybody wins.

Fixes #4384. Fixes #4715. cc once fns (#2202), optimizing local moves (#5016).
 2013-05-28 20:22:14 -04:00
Daniel Micay
9ab2921300 use the type's alignment for generated memsets 2013-05-28 18:38:46 -04:00
bors
d7e1f08b21 auto merge of #6774 : alexcrichton/rust/silence-warnings, r=graydon 
Also as a bonus this fixes #6767
 2013-05-28 13:35:05 -07:00
Alex Crichton
b04c40bb1c Silence various warnings throughout test modules 2013-05-28 15:27:35 -05:00
Daniel Micay
accc5272f8 noalias on all &mut parameters is too coarse 
it can alias `&const` and `@mut`
 2013-05-28 13:05:50 -04:00
bors
b738b5766e auto merge of #6754 : thestinger/rust/noalias, r=nikomatsakis 
The compiler guarantees that there are no other references to a unique pointer when it's passed by-value to a function.

The existence of the header and annihilator don't matter since it's not relevant to the call:

> For a call to the parent function, dependencies between memory references from before or after the call and from those during the call are “irrelevant” to the noalias keyword for the arguments and return value used in that call.

@graydon's tracing garbage collector stores the metadata outside of the boxes, so that won't be a problem. I'm unsure if updating the header while inside a function where it's marked as `noalias` would be a problem anyway since you never actually read or write to the header.

@nikomatsakis: r?
 2013-05-28 02:59:03 -07:00
bors
6264df5331 auto merge of #6777 : alexcrichton/rust/less-memory, r=graydon 
Via my super-accurate timing (`/usr/bin/time -l`), I get 2431119360 => 1884430336 == ~520MB

Closes #6637.
 2013-05-27 22:29:09 -07:00
Alex Crichton
ae7df57c5a Prevent refcount cycles during linting 
Shaves off ~600MB of memory while compiling rustc
 2013-05-27 22:22:09 -05:00
Graydon Hoare
3c4ce79518 rustc: Switch ty::node_type_table to smallintmap, cut 400mb memory use off a librustc build. 
Smallintmap was being populated with sparse keys during ast deserialization.
 2013-05-27 19:50:49 -07:00
Tom Lee
b7f71e1ee6 Implementing suggestions from @nikomatsakis 2013-05-27 19:34:25 -07:00
bors
2061ce9aff auto merge of #6741 : pcwalton/rust/intra-crate-start, r=graydon 
r? @brson
 2013-05-27 18:26:04 -07:00
Tom Lee
67283eaad2 Omit unused implicit argument if return type is immediate. 2013-05-27 17:13:01 -07:00
bors
dbc57584bd auto merge of #6724 : thestinger/rust/swap_fast, r=thestinger 
Passing higher alignment values gives the optimization passes more freedom since it can copy in larger chunks. This change results in rustc outputting the same post-optimization IR as clang for swaps and most copies excluding the lack of information about padding.

Code snippet:

```rust
#[inline(never)]
fn swap<T>(x: &mut T, y: &mut T) {
    util::swap(x, y);
}
```

Original IR (for `int`):

```llvm
define internal fastcc void @_ZN9swap_283417_a71830ca3ed2d65d3_00E(i64*, i64*) #1 {
static_allocas:
  %2 = icmp eq i64* %0, %1
  br i1 %2, label %_ZN4util9swap_283717_a71830ca3ed2d65d3_00E.exit, label %3

; <label>:3                                       ; preds = %static_allocas
  %4 = load i64* %0, align 1
  %5 = load i64* %1, align 1
  store i64 %5, i64* %0, align 1
  store i64 %4, i64* %1, align 1
  br label %_ZN4util9swap_283717_a71830ca3ed2d65d3_00E.exit

_ZN4util9swap_283717_a71830ca3ed2d65d3_00E.exit:  ; preds = %3, %static_allocas
  ret void
}
```

After #6710:

```llvm
define internal fastcc void @_ZN9swap_283017_a71830ca3ed2d65d3_00E(i64* nocapture, i64* nocapture) #1 {
static_allocas:
  %2 = load i64* %0, align 1
  %3 = load i64* %1, align 1
  store i64 %3, i64* %0, align 1
  store i64 %2, i64* %1, align 1
  ret void
}
```

After this change:

```llvm
define internal fastcc void @_ZN9swap_283017_a71830ca3ed2d65d3_00E(i64* nocapture, i64* nocapture) #1 {
static_allocas:
  %2 = load i64* %0, align 8
  %3 = load i64* %1, align 8
  store i64 %3, i64* %0, align 8
  store i64 %2, i64* %1, align 8
  ret void
}
```

Another example:

```rust
#[inline(never)]
fn set<T>(x: &mut T, y: T) {
    *x = y;
}
```

Before, with `(int, int)` (align 1):

```llvm
define internal fastcc void @_ZN8set_282517_8fa972e3f9e451983_00E({ i64, i64 }* nocapture, { i64, i64 }* nocapture) #1 {
static_allocas:
  %2 = bitcast { i64, i64 }* %1 to i8*
  %3 = bitcast { i64, i64 }* %0 to i8*
  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %3, i8* %2, i64 16, i32 1, i1 false)
  ret void
}
```

After, with `(int, int)` (align 8):

```llvm
define internal fastcc void @_ZN8set_282617_8fa972e3f9e451983_00E({ i64, i64 }* nocapture, { i64, i64 }* nocapture) #1 {
static_allocas:
  %2 = bitcast { i64, i64 }* %1 to i8*
  %3 = bitcast { i64, i64 }* %0 to i8*
  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %3, i8* %2, i64 16, i32 8, i1 false)
  ret void
}
```
 2013-05-27 15:56:08 -07:00
bors
5d04ee805b auto merge of #6715 : Xazax-hun/rust/incoming, r=graydon 
Preliminary implementation for: https://github.com/mozilla/rust/issues/6275

This is my first (non hello world) rust code, so it may not be idiomatic.
 2013-05-27 13:44:08 -07:00
Seo Sanghyeon
8f80323f09 Remove unnecessary allocations flagged by lint 2013-05-28 03:14:44 +09:00
Seo Sanghyeon
363e672736 Use adjustments table for allocation lint 2013-05-28 03:12:13 +09:00
Daniel Micay
c302010ef0 mark unique pointer parameters as noalias 
Closes #6749
 2013-05-26 14:11:30 -04:00
Daniel Micay
58d6864ad7 add an align parameter to call_memcpy 2013-05-26 10:26:04 -04:00
Daniel Micay
d9c0f0f188 add memset32/memset64 2013-05-26 10:26:03 -04:00
Daniel Micay
cf8e9f9aec make the memcpy/memmove intrinsics higher-level 
This allows them to make use of the type's alignment, instead of being
pessimistic and assuming it is only 1.
 2013-05-26 10:26:03 -04:00
James Miller
2c2346e3d4 Mark &mut parameters as noalias 2013-05-26 17:40:07 +12:00
Patrick Walton
cf34f9f9a9 librustc: Allow intra-crate start functions, for runtimeless operation. 2013-05-25 18:20:33 -07:00
Gábor Horváth
3d61931fca Only trigger missing documentation warnings to public functions and fields. 2013-05-24 14:13:41 +02:00
Gábor Horváth
c6581325ac Warnings for missing documentations. 2013-05-24 10:27:31 +02:00
bors
ed9a793d24 auto merge of #6706 : brson/rust/glue, r=catamorphism 
Instead of `glue_drop1234` it's `Type::<hash>::glue_drop1234`

Haven't done any performance testing.
 2013-05-23 23:13:46 -07:00
bors
212d6a2f61 auto merge of #6710 : thestinger/rust/swap, r=catamorphism 2013-05-23 22:04:40 -07:00
Daniel Micay
a7f450ab22 indentation fix 2013-05-23 22:32:33 -04:00
Daniel Micay
7d2f836065 add memcpy intrinsic to mirror memmove 2013-05-23 22:29:30 -04:00
bors
a776d65b4d auto merge of #6690 : erickt/rust/cleanup-warnings, r=brson 
Simple patch series to fix up all the warnings a rustc compile is giving at the moment. It also fixes a NOTE in `to_bytes.rs` to remove the `to_bytes::iter_bytes_<N>` functions.
 2013-05-23 18:10:36 -07:00
Erick Tryzelaar
9635b30837 cleanup warnings from librustc 2013-05-23 17:57:07 -07:00
Erick Tryzelaar
1965d72957 core: remove iter_bytes helper functions 2013-05-23 17:48:16 -07:00