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48 Commits

Author SHA1 Message Date
bors
680eb71564 auto merge of #8532 : kballard/rust/cstr-cleanup, r=erickt 
Implement interior null checking in `.to_c_str()`, among other changes.
 2013-08-16 06:02:14 -07:00
Daniel Micay
062747b9c9 ptr: inline the Clone implementation 2013-08-15 21:12:34 -04:00
Kevin Ballard
03ef71e262 Add ToCStr method .with_c_str() 
.with_c_str() is a replacement for the old .as_c_str(), to avoid
unnecessary boilerplate.

Replace all usages of .to_c_str().with_ref() with .with_c_str().
 2013-08-15 01:33:10 -07:00
Alex Crichton
930885d5e5 Forbid pub/priv where it has no effect 
Closes #5495
 2013-08-12 23:20:46 -07:00
Daniel Micay
0cb0ef2ca5 fix build with the new snapshot compiler 2013-08-12 17:37:46 -04:00
Erick Tryzelaar
a54476b0aa Merge remote-tracking branch 'remotes/origin/master' into remove-str-trailing-nulls 2013-08-07 14:10:39 -07:00
Daniel Micay
55f3d04101 vec: use offset_inbounds for iterators 
This allows LLVM to optimize vector iterators to an `getelementptr` and
`icmp` pair, instead of `getelementptr` and *two* comparisons.

Code snippet:

~~~
fn foo(xs: &mut [f64]) {
    for x in xs.mut_iter() {
        *x += 10.0;
    }
}
~~~

LLVM IR at stage0:

~~~
; Function Attrs: noinline uwtable
define void @"_ZN3foo17_68e1b25bca131dba7_0$x2e0E"({ i64, %tydesc*, i8*, i8*, i8 }* nocapture, { double*, i64 }* nocapture) #1 {
"function top level":
  %2 = getelementptr inbounds { double*, i64 }* %1, i64 0, i32 0
  %3 = load double** %2, align 8
  %4 = getelementptr inbounds { double*, i64 }* %1, i64 0, i32 1
  %5 = load i64* %4, align 8
  %6 = ptrtoint double* %3 to i64
  %7 = and i64 %5, -8
  %8 = add i64 %7, %6
  %9 = inttoptr i64 %8 to double*
  %10 = icmp eq double* %3, %9
  %11 = icmp eq double* %3, null
  %or.cond6 = or i1 %10, %11
  br i1 %or.cond6, label %match_case, label %match_else

match_else:                                       ; preds = %"function top level", %match_else
  %12 = phi double* [ %13, %match_else ], [ %3, %"function top level" ]
  %13 = getelementptr double* %12, i64 1
  %14 = load double* %12, align 8
  %15 = fadd double %14, 1.000000e+01
  store double %15, double* %12, align 8
  %16 = icmp eq double* %13, %9
  %17 = icmp eq double* %13, null
  %or.cond = or i1 %16, %17
  br i1 %or.cond, label %match_case, label %match_else

match_case:                                       ; preds = %match_else, %"function top level"
  ret void
}
~~~

Optimized LLVM IR at stage1/stage2:

~~~
; Function Attrs: noinline uwtable
define void @"_ZN3foo17_68e1b25bca131dba7_0$x2e0E"({ i64, %tydesc*, i8*, i8*, i8 }* nocapture, { double*, i64 }* nocapture) #1 {
"function top level":
  %2 = getelementptr inbounds { double*, i64 }* %1, i64 0, i32 0
  %3 = load double** %2, align 8
  %4 = getelementptr inbounds { double*, i64 }* %1, i64 0, i32 1
  %5 = load i64* %4, align 8
  %6 = lshr i64 %5, 3
  %7 = getelementptr inbounds double* %3, i64 %6
  %8 = icmp eq i64 %6, 0
  %9 = icmp eq double* %3, null
  %or.cond6 = or i1 %8, %9
  br i1 %or.cond6, label %match_case, label %match_else

match_else:                                       ; preds = %"function top level", %match_else
  %.sroa.0.0.in7 = phi double* [ %10, %match_else ], [ %3, %"function top level" ]
  %10 = getelementptr inbounds double* %.sroa.0.0.in7, i64 1
  %11 = load double* %.sroa.0.0.in7, align 8
  %12 = fadd double %11, 1.000000e+01
  store double %12, double* %.sroa.0.0.in7, align 8
  %13 = icmp eq double* %10, %7
  br i1 %13, label %match_case, label %match_else

match_case:                                       ; preds = %match_else, %"function top level"
  ret void
}
~~~
 2013-08-06 23:54:24 -04:00
Daniel Micay
7d115c9420 add an intrinsic for inbounds GEP 2013-08-06 23:41:20 -04:00
Erick Tryzelaar
5eaa4d1d2f Merge remote-tracking branch 'remotes/origin/master' into remove-str-trailing-nulls 2013-08-06 16:21:02 -07:00
blake2-ppc
ea9c5c405e std: Remove uint::iterate, replaced by range 2013-08-06 04:05:08 +02:00
Erick Tryzelaar
3c94b5044c Merge remote-tracking branch 'remotes/origin/master' into str-remove-null 2013-08-04 16:23:41 -07:00
Erick Tryzelaar
bd908d4c0e std and rustc: explicitly pass c strings to c functions 
When strings lose their trailing null, this pattern will become dangerous:

let foo = "bar";
let foo_ptr: *u8 = &foo[0];

Instead we should use c_strs to handle this correctly.
 2013-08-04 15:45:16 -07:00
Erick Tryzelaar
3102b1797e std: replace str::as_c_str with std::c_str 2013-08-04 14:13:17 -07:00
Daniel Micay
9f74217d80 register snapshots 2013-08-03 21:09:28 -04:00
Daniel Micay
ef870d37a5 implement pointer arithmetic with GEP 
Closes #8118, #7136

~~~rust
extern mod extra;

use std::vec;
use std::ptr;

fn bench_from_elem(b: &mut extra::test::BenchHarness) {
    do b.iter {
        let v: ~[u8] = vec::from_elem(1024, 0u8);
    }
}

fn bench_set_memory(b: &mut extra::test::BenchHarness) {
    do b.iter {
        let mut v: ~[u8] = vec::with_capacity(1024);
        unsafe {
            let vp = vec::raw::to_mut_ptr(v);
            ptr::set_memory(vp, 0, 1024);
            vec::raw::set_len(&mut v, 1024);
        }
    }
}

fn bench_vec_repeat(b: &mut extra::test::BenchHarness) {
    do b.iter {
        let v: ~[u8] = ~[0u8, ..1024];
    }
}
~~~

Before:

    test bench_from_elem ... bench: 415 ns/iter (+/- 17)
    test bench_set_memory ... bench: 85 ns/iter (+/- 4)
    test bench_vec_repeat ... bench: 83 ns/iter (+/- 3)

After:

    test bench_from_elem ... bench: 84 ns/iter (+/- 2)
    test bench_set_memory ... bench: 84 ns/iter (+/- 5)
    test bench_vec_repeat ... bench: 84 ns/iter (+/- 3)
 2013-07-30 02:50:31 -04:00
Erick Tryzelaar
7af56bb921 std: move StrUtil::as_c_str into StrSlice 2013-07-23 16:56:22 -07:00
bors
3514a5af06 auto merge of #7857 : blake2-ppc/rust/fix-test-warnings, r=alexcrichton 
Fix warnings that only show up when compiling the tests for libstd, libextra and one in librusti. Only trivial changes.
 2013-07-18 20:55:38 -07:00
bors
559d2ef925 auto merge of #7842 : thestinger/rust/closure, r=huonw 2013-07-18 08:37:39 -07:00
blake2-ppc
ff9b75f26d Fix warnings in libstd and librusti tests 2013-07-18 02:18:56 +02:00
Patrick Walton
99b33f7219 librustc: Remove all uses of "copy". 2013-07-17 14:57:51 -07:00
Daniel Micay
0bc204e74d rm unnecessary stage0 zero_memory fn 2013-07-17 14:08:54 -04:00
=Mark Sinclair
294999c350 Added overloaded Add and Sub traits for pointer arithmetic 
Implemented ptr arithmetic for *T and *mut T. Tests passing
 2013-07-10 06:34:00 -04:00
Daniel Micay
6f5be9063d ptr: optimize {swap,replace,read}_ptr 2013-07-09 22:44:11 -04:00
Niko Matsakis
59083d2c6a Address nits by @catamorphism 2013-07-08 13:55:10 -04:00
Niko Matsakis
ba13482dfa update ptr intrinsics and rewrite vec routines to be more correct. 
In particular, it is not valid to go around passing uninitialized or zero'd
memory as arguments. Rust should generally be free to assume that the arguments
it gets are valid input values, but the output of intrinsics::uninit() and
intrinsics::init() are not (e.g., an @T is just null, leading to an error
if we should try to increment the ref count).
 2013-07-08 13:53:44 -04:00
Huon Wilson
cdea73cf5b Convert vec::{as_imm_buf, as_mut_buf} to methods. 2013-07-04 00:46:50 +10:00
Alex Crichton
b29c368674 Removing a lot of usage of '&const' 2013-06-29 08:35:48 -07:00
James Miller
3bc4d1a120 Remove all #[cfg(stage0)]-protected code 
New snapshot means this can all go. Also removes places that have
comments that say they are workarounds for stage0 errors.
 2013-06-21 02:43:02 +12:00
Graydon Hoare
d904c72af8 replace #[inline(always)] with #[inline]. r=burningtree. 2013-06-18 14:48:48 -07:00
Daniel Micay
fbae011ad1 fix the docstring for copy_nonoverlapping_memory 2013-06-11 19:06:01 -04:00
Daniel Micay
107e371bf0 fix the ptr::set_memory docstring 2013-06-11 17:48:44 -04:00
Huon Wilson
98ba91f81b remove unused import warnings 2013-06-09 02:22:23 +10:00
Daniel Micay
8bcefef2f2 libc: omit memcpy, memmove and memset 
LLVM provides these functions as intrinsics, and will generate calls to
libc when appropriate. They are exposed in the `ptr` module as
`copy_nonoverlapping_memory`, `copy_memory` and `set_memory`.
 2013-06-06 15:18:45 -04:00
Daniel Micay
e900dba28a rename the Ptr trait to RawPtr 
Closes #6607
 2013-06-03 13:50:29 -04:00
Daniel Micay
454133127a ptr: split out borrowed pointer utilities 
The ptr module is intended to be for raw pointers.

Closes #3111
 2013-06-02 19:24:33 -04:00
Daniel Micay
042618da7b ptr: replace unnecessary unsafe code 2013-05-31 11:32:27 -04:00
Daniel Micay
29aba8033a mv the raw pointer {swap,replace}_ptr to std::ptr 2013-05-31 10:31:26 -04:00
Alex Crichton
007651cd26 Require documentation by default for libstd 
Adds documentation for various things that I understand.
Adds #[allow(missing_doc)] for lots of things that I don't understand.
 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
Alex Crichton
b04c40bb1c Silence various warnings throughout test modules 2013-05-28 15:27:35 -05:00
Daniel Micay
e6c04dea03 fix casts on 32-bit 2013-05-27 18:14:00 -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
Daniel Micay
7bff0281c7 optimize util::swap, &mut pointers never alias 2013-05-23 23:00:16 -04:00
Daniel Micay
5ba5865e85 swap_ptr: rm equality check 
This isn't needed semantically, and it's the wrong case to optimize for.
 2013-05-23 21:57:37 -04:00
Patrick Walton
0c820d4123 libstd: Rename libcore to libstd and libstd to libextra; update makefiles. 
This only changes the directory names; it does not change the "real"
metadata names.
 2013-05-22 21:57:05 -07:00
Graydon Hoare
dde5860380 Remove some duplicated unused parts of std now that they're present in core. 2011-12-14 18:04:45 -08:00
Graydon Hoare
447414f007 Establish 'core' library separate from 'std'. 2011-12-06 12:13:04 -08:00