llvm-svn: 193276

Revert "Calling _chkstk is required on ELF as well as COFF on Windows. Without _chkstk functions requiring large stack crash in initialization code. Previous code tested for COFF format but not Mach-O and this patch modifies the code to test for Windows."

This reverts commit r193263.

It is causing CodeGen/X86/mingw-alloca.ll to fail.

llvm-svn: 193275

Commit r191484 treated constexpr function templates as normal function
templates with respect to delaying their parsing.  However, this is
unnecessarily restrictive because there is no compatibility concern with
constexpr, MSVC doesn't support it.

Instead, simply disable delayed template parsing for constexpr function
templates.  This largely reverts the changes made in r191484 but keeps
it's unit test.

This fixes PR17661.

llvm-svn: 193274

llvm-svn: 193273

llvm-svn: 193272

Because it depends on "-mllvm -debug" flag, the test fails in Release build.

llvm-svn: 193271

Also update the cost model.

llvm-svn: 193270

The Itanium mangler couldn't cope with mangling an IndirectFieldDecl.
Instead, mangle the field the IndirectFieldDecl refers to.

Further, give IndirectFieldDecl no linkage just like FieldDecl.

N.B. Decl.cpp:getLVForNamespaceScopeDecl tried to calculate linkage for
data members of anonymous structs/unions.  However, this seems
impossible so turn it into an assertion.

llvm-svn: 193269

llvm-svn: 193268

Now, all extract & insert intrinsics should have the correct and operation
to ignore higher bits.

rdar://15250497

llvm-svn: 193267

llvm-svn: 193266

This ensures that variables accessible through a union are invalidated when
the union value is passed to a function. We still don't fully handle union
values, but this should at least quiet some false positives.

PR16596

llvm-svn: 193265

There are a few motivations for this:
- Using a map allows for checking if line is in map. This differentiates
  unexecutable lines (such as comments) from unexecuted logical lines of
  code. "#####" is now outputted in this case, in line with gcov.
- Source files are no longer read in twice: once when storing the line
  counts, and once when outputting the data.
- Greatly simplifies the function FileInfo::addLineCount().

llvm-svn: 193264

Without _chkstk functions requiring large stack crash in 
initialization code. Previous code tested for COFF format but 
not Mach-O and this patch modifies the code to test for Windows.

Credits to Andrew MacPherson.

llvm-svn: 193263

On sandy bridge (PR17654) we now get
	vpxor	%xmm1, %xmm1, %xmm1
	vpunpckhbw	%xmm1, %xmm0, %xmm2
	vpunpcklbw	%xmm1, %xmm0, %xmm0
	vinsertf128	$1, %xmm2, %ymm0, %ymm0

On haswell it's a simple
	vpmovzxbw	%xmm0, %ymm0

There is a maze of duplicated and dead transforms and patterns in this
area. Remove the dead custom lowering of zext v8i16 to v8i32, that's
already handled by LowerAVXExtend.

llvm-svn: 193262

- Skip instructions added in prolog. For specific targets, prolog may
  insert helper function calls (e.g. _chkstk will be called when
  there're more than 4K bytes allocated on stack). However, these
  helpers don't use/def YMM/XMM registers.

llvm-svn: 193261

llvm-svn: 193260

llvm-svn: 193259

llvm-svn: 193258

llvm-svn: 193257

FIXME: I don't think it'd be smart.
llvm-svn: 193256

llvm-svn: 193255

llvm-svn: 193254

llvm-svn: 193253

Per Nadav's review comments for r192866.

llvm-svn: 193252

 Major steps include:
 1). introduces a not-addr-taken bit-field in GlobalVariable
 2). GlobalOpt pass sets "not-address-taken" if it proves a global varirable 
    dosen't have its address taken.
 3). AA use this info for disambiguation. 

llvm-svn: 193251

llvm-svn: 193250

Pacifies GCC's -Wstrict-prototypes.

llvm-svn: 193249

llvm-svn: 193248

llvm-svn: 193247

A prior commit of this patch was reverted because it was within the blamelist's purview of a failing test.  The failure of that test has been addressed here: http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20131021/091546.html.  Therefore I am recommitting this patch (all tests pass on windows, except for the usual modules & index suspects that never pass on my box).

Some background: Both Doug and Richard had asked me in Chicago to remove the circular reference in CXXRecordDecl to LambdaExpr by factoring out and storing the needed information from LambdaExpr directly into CXXRecordDecl.
 
In addition, I have added an IsGenericLambda flag - this makes life a little easier when we implement capturing, and are Sema-analyzing the body of a lambda (and the calloperator hasn't been wired to the closure class yet). Any inner lambdas can have potential captures that could require walking up the scope chain and checking if any generic lambdas are capture-ready. This 'bit' makes some of that checking easier. 

No change in functionality.

This patch was approved by Doug with minor modifications (comments were cleaned up, and all data members were converted from bool/enum to unsigned, as requested): 
http://llvm-reviews.chandlerc.com/D1856

Thanks!

llvm-svn: 193246

llvm-svn: 193245

llvm-svn: 193244

llvm-svn: 193243

Some versions of the GNU MIPS toolchain generate 64-Bit DWARF (even though
it isn't really necessary).  This change adds support for the 64-Bit DWARF
format, but is not actually tested with >4GB of debug data.

Similar changes are in progress for llvm's version of DWARFDebugLine, in
review D1988.

llvm-svn: 193242

llvm-svn: 193241

llvm-svn: 193240

llvm-svn: 193239

llvm-svn: 193238

Unlike the previously added intrinsics, these do not map to a single instruction
on MIPS32. They are provided for regularity (to round out the .[bhw] variants
of the same operation) and compatibility with GCC.

Includes:
  copy_[us].d, fill.d, insert.d, insve.d

llvm-svn: 193237