llvm-svn: 147785

llvm-svn: 147784

Thanks to David Blaikie for pointing this out.

llvm-svn: 147783

the anonymous namespace to its parent. Semantically, this means that
the anonymous namespaces defined in one module are distinct from the
anonymous namespaces defined in another module.

llvm-svn: 147782

Patch by  Joe Groff!

llvm-svn: 147781

that we can merge, for example, two occurrences of

  namespace N { void f(); }

in two disjoint modules.

llvm-svn: 147780

llvm-svn: 147779

modules. Teach name lookup into namespaces to search in each of the
merged DeclContexts as well as the (now-primary) DeclContext. This
supports the common case where two different modules put something
into the same namespace.

llvm-svn: 147778

This subsumes several other transforms while enabling us to catch more cases.

llvm-svn: 147777

llvm-svn: 147776

is important because it's fairly common for headers (especially system
headers) to want to provide only those typedefs needed for that
particular header, based on some guard macro, e.g.,

#ifndef _SIZE_T
#define _SIZE_T
typedef long size_t;
#endif

which is repeated in a number of headers. The guard macro protects
against duplicate definitions. However, this means that only the first
occurrence of this pattern actually defines size_t, so the submodule
corresponding to this header has the only visible definition. If a
user then imports a different submodule from the same module, size_t
will be known but not visible, and therefore cannot be used.

By allowing redefinition of typedefs, each header that wants to define
size_t can do so independently, so it will be available in the
corresponding submodules.

llvm-svn: 147775

llvm-svn: 147774

this substraction will result in small negative numbers at worst which
become very large positive numbers on assignment and are thus caught by
the <=4 check on the next line. The >0 check clearly intended to catch
these as negative numbers.

Spotted by inspection, and impossible to trigger given the shift widths
that can be used.

llvm-svn: 147773

llvm-svn: 147772

llvm-svn: 147771

Remove AVX hack in X86Subtarget. AVX/AVX2 are now treated as an SSE level. Predicate functions have been altered to maintain previous names and behavior.

llvm-svn: 147770

llvm-svn: 147769

Reorder a bunch of patterns to put the AVX version first thus giving it priority over the SSE version. Another step towards trying to remove the AVX hack that disables SSE from X86Subtarget.

llvm-svn: 147768

Clean up patterns for MOVNT*. Not sure why there were floating point types on MOVNTPS and MOVNTDQ. And v4i64 was completely missing.

llvm-svn: 147767

Mark MOVNTI as being supported in SSE2 OR AVX mode. This instruction has no AVX equivalent so we should use the SSE version.

llvm-svn: 147766

Move SSE2 logical operations PAND/POR/PXOR/PANDN above SSE1 logical operations ANDPS/ORPS/XORPS/ANDNPS. This fixes a pattern ordering issue that meant that the SSE2 instructions could never be directly selected since the SSE1 patterns would always match first. This is largely moot with the ExeDepsFix pass, but I'm trying to audit for all such ordering issues.

llvm-svn: 147765

Change some places that were checking for AVX OR SSE1/2 to use hasXMM/hasXMMInt instead. Also fix one place that checked SSE3, but accidentally excluded AVX to use hasSSE3orAVX. This is a step towards removing the AVX hack from the X86Subtarget.h

llvm-svn: 147764

llvm-svn: 147763

Don't disable MMX support when AVX is enabled. Fix predicates for MMX instructions that were added along with SSE instructions to check for AVX in addition to SSE level.

llvm-svn: 147762

First brush with testing __gxx_personality_v0 reveals there is still a long way to go.  But my understanding of what it is supposed to do continues to improve.  I am currently contemplating whether I need to implement typeinfo before completing __gxx_personality_v0 in order to get matching catch handlers correct.

llvm-svn: 147761

Add a few TODO's and FIXME's.  Making notes as I go along, but not slowing down to fix these yet.  Just don't want anything to fall through the cracks.

llvm-svn: 147760

Correct comment regarding members of __cxa_dependent_exception.  Actually it is useful to disguise a __cxa_dependent_exception as a __cxa_exception by filling in most (not all) of these members at __cxa_dependent_exception construction time.  That way most routines don't have to care which kind of exception they have.

llvm-svn: 147759

llvm-svn: 147758

llvm-svn: 147757

llvm-svn: 147756

llvm-svn: 147755

We still save an instruction when just the "and" part is replaced.
Also change the code to match comments more closely.

llvm-svn: 147753

llvm-svn: 147752

safely proven not to have been clobbered. No small test case possible.

llvm-svn: 147751

c++ object properties. wip.

llvm-svn: 147750

InstCombine: If we have a bit test and a sign test anded/ored together, merge the sign bit into the bit test.

This is common in bit field code, e.g. checking if the first or the last bit of a bit field is set.

llvm-svn: 147749

llvm-svn: 147748

Fixed an ARM backtracing issue where if the previous frame was a thumb
function and it was a tail call so that the current frame returned to
an address that would fall into the next function, we would use the
next function as the basis for how we unwound the previous frame's
registers and of course get things wrong. We now fix the PC code
address using the current ABI plug-in, and the ARM ABI plug-in has
been modified to correctly fix the code address. So when we do the
symbol context lookup, instead of taking an address like 0x1001 and
decrementing 1, and looking up the symbol context for a frame, we
now correctly fix 0x1001 to 0x1000, then decrement that by 1 to
get the correct symbol context.

I added a bunch more logging to "log enable lldb uwnind" to help
us in the future. We now log the PC, FP and SP (if they are available),
and we also dump the "active_row" that we find for unwinding a frame.

llvm-svn: 147747

Fixed the default ARM regiter set to be able to refer to "r7" as "fp" for the apple debugserver.

llvm-svn: 147746

llvm-svn: 147745