llvm-svn: 189880

/bin/sh is more portable, and all systems with /bin/bash are expected to
have /bin/sh as well, even if only a link to bash.

Review: http://llvm-reviews.chandlerc.com/D1576
llvm-svn: 189879

Previously, the clang crash handling code would kick in and give a crash
report for these, even though they're not that sort of error.

rdar://14882264

llvm-svn: 189878

llvm-svn: 189877

llvm-svn: 189876

llvm-svn: 189875

llvm-svn: 189874

llvm-svn: 189873

This adds init/fini support for Hexagon.

llvm-svn: 189872

This changes the interface of createLinkerInput to use ErrorOr, so that
errors from the linker can be captured.

Also adds a convenience function for error strings to be returned from
file nodes.

llvm-svn: 189871

llvm-svn: 189870

The reason that I am turning off this optimization is that there is an
additional case where a block can escape that has come up. Specifically, this
occurs when a block is used in a scope outside of its current scope.

This can cause a captured retainable object pointer whose life is preserved by
the objc_retainBlock to be deallocated before the block is invoked.

An example of the code needed to trigger the bug is:

----
\#import <Foundation/Foundation.h>
int main(int argc, const char * argv[]) {
  void (^somethingToDoLater)();

  {
    NSObject *obj = [NSObject new];

    somethingToDoLater = ^{
      [obj self]; // Crashes here
    };
  }

  NSLog(@"test.");

  somethingToDoLater();
  return 0;
}
----

In the next commit, I remove all the dead code that results from this.

Once I put in the fixing commit I will bring back the tests that I deleted in
this commit.

rdar://14802782.
rdar://14868830.

llvm-svn: 189869

[objc-arc] Move some block tests from basic.ll -> retain-block.ll and add some missing CHECK-LABELS.

llvm-svn: 189868

Summary:
Transform the token sequence for:
typename typedef T U;

to:
typename T typedef U;

Raise a diagnostic when this happens but only if we succeeded handling
the typename.

Reviewers: rsmith, rnk

Reviewed By: rsmith

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1433

llvm-svn: 189867

Patch by chris.wailes@gmail.com.

llvm-svn: 189866

llvm-svn: 189865

llvm-svn: 189864

llvm-svn: 189863

hashing the contents of DW_FORM_data1 on top of a type with attributes.

llvm-svn: 189862

llvm-svn: 189861

Patch by Nico Rieck!

llvm-svn: 189860

Found by Chris Wailes

llvm-svn: 189859

This patch changes the default setting for the LateVectorization flag that controls where the loop-vectorizer is ran.

Perf gains:
SingleSource/Benchmarks/Shootout/matrix -37.33%
MultiSource/Benchmarks/PAQ8p/paq8p  -22.83%
SingleSource/Benchmarks/Linpack/linpack-pc  -16.22%
SingleSource/Benchmarks/Shootout-C++/ary3 -15.16%
MultiSource/Benchmarks/TSVC/NodeSplitting-flt/NodeSplitting-flt -10.34%
MultiSource/Benchmarks/TSVC/NodeSplitting-dbl/NodeSplitting-dbl -7.12%

Regressions:
SingleSource/Benchmarks/Misc/lowercase  15.10%
MultiSource/Benchmarks/TSVC/Equivalencing-flt/Equivalencing-flt 13.18%
SingleSource/Benchmarks/Shootout-C++/matrix 8.27%
SingleSource/Benchmarks/CoyoteBench/lpbench 7.30%

llvm-svn: 189858

llvm-svn: 189857

llvm-svn: 189855

This is another one that doesn't matter much,
but uses the right GEP index types in the first
place.

llvm-svn: 189854

This doesn't actually matter, since alloca is always
0 address space, but this is more consistent.

llvm-svn: 189853

This fixes pr13124.

From the discussion at
http://lists.cs.uiuc.edu/pipermail/cfe-dev/2012-June/022606.html
we know that we cannot make funcions in a weak_odr vtable also weak_odr. They
should remain linkonce_odr.

The side effect is that we cannot emit a available_externally vtable unless we
also emit a copy of the function. This also has an issue: If codegen is going
to output a function, sema has to mark it used. Given llvm.org/pr9114, it looks
like sema cannot be more aggressive at marking functions used because
of vtables.

This leaves us with a few unpleasant options:

* Marking functions in vtables used if possible. This sounds a bit sloppy, so
  we should avoid it.
* Producing available_externally vtables only when all the functions in it are
  already used or weak_odr. This would cover cases like

--------------------
struct foo {
  virtual ~foo();
};
struct bar : public foo {
  virtual void zed();
};
void f() {
  foo *x(new bar);
  delete x;
}
void g(bar *x) {
  x->~bar(); // force the destructor to be used
}
--------------------------

and

----------------------------------
template<typename T>
struct bar {
  virtual ~bar();
};
template<typename T>
bar<T>::~bar() {
}

// make the destructor weak_odr instead of linkonce_odr
extern template class bar<int>;

void f() {
  bar<int> *x(new bar<int>);
  delete x;
}
----------------------------

These look like corner cases, so it is unclear if it is worth it.

* And finally: Just nuke this optimization. That is what this patch implements.

llvm-svn: 189852

Switched FormatAttr to using an IdentifierArgument instead of a StringArgument since that is a more accurate modeling.

llvm-svn: 189851

with a prior declaration. No functionality change intended.

llvm-svn: 189850

WIP: Refactor some code so that it can be called by more than just one method. No functionality change.

llvm-svn: 189849

llvm-svn: 189848

llvm-svn: 189847

separator between each two elements.

llvm-svn: 189846

llvm-svn: 189845

llvm-svn: 189844

Patch by chris.wailes@gmail.com

Functions can now declare what state the consumable type the are returning will
be in. This is then used on the caller side and checked on the callee side.
Constructors now use this attribute instead of the 'consumes' attribute.

llvm-svn: 189843

From llvm r189841.

llvm-svn: 189842

This reverts commit r189648.

Fixes for the previously failing clang-side arm_neon_intrinsics test
cases will be checked in separately.

llvm-svn: 189841

This won't affect the kinds of hashes we test for as we actually
do hashing based on form and attribute. Change the fission-hash
testcase one last time to handle DW_AT_comp_dir.

llvm-svn: 189840