llvm-svn: 132276

fixes self-host.

llvm-svn: 132275

and should probably be encoded as

DW_OP_reg 32 DW_OP_piece 4 DW_OP_reg 33

llvm-svn: 132274

llvm-svn: 132271

llvm-svn: 132270

It's quite likely that this will explode, but I need to know how. :)

llvm-svn: 132269

-verify-machineinstrs failures on several tests.

llvm-svn: 132268

llvm-svn: 132267

llvm-svn: 132266

llvm-svn: 132265

llvm-svn: 132264

Refactor the type legalizer. Switch TargetLowering to a new enum - LegalizeTypeAction.
This patch does not change the behavior of the type legalizer. The codegen
produces the same code.
This infrastructural change is needed in order to enable complex decisions
for vector types (needed by the vector-select patch).

llvm-svn: 132263

llvm-svn: 132262

noexcept for <memory>.  I've added a few extension noexcept to:  allocator_traits<A>::deallocate, allocaate<T>::deallocate, return_temporary_buffer, and default_delete<T>::operator()(T*) const.  My rationale was:  If a std-dicated noexcept function needs to call another std-defined function, that called function must be noexcept.  We're all a little new to noexcept, so things like this are to be expected.  Also included fix for broken __is_swappable trait pointed out by Marc Glisse, thanks Marc|.  And fixed a test case for is_nothrow_destructible.  Destructors are now noexcept by default|

llvm-svn: 132261

llvm-svn: 132260

llvm-svn: 132259

llvm-svn: 132258

llvm-svn: 132257

llvm-svn: 132256

llvm-svn: 132255

Fixes PR10040.

llvm-svn: 132254

transformed by the inliner into a branch to the enclosing landing pad
(when inlined through an invoke).  If not so optimized, it is lowered
DWARF EH preparation into a call to _Unwind_Resume (or _Unwind_SjLj_Resume
as appropriate).  Its chief advantage is that it takes both the
exception value and the selector value as arguments, meaning that there
is zero effort in recovering these;  however, the frontend is required
to pass these down, which is not actually particularly difficult.

Also document the behavior of landing pads a bit better, and make it
clearer that it's okay that personality functions don't always land at
landing pads.  This is just a fact of life.  Don't write optimizations that
rely on pushing things over an unwind edge.

llvm-svn: 132253

switch.  With this newfound organization, teach tblgen how not to give
all intrinsics the 'nounwind' attribute.  Introduce a new intrinsic,
llvm.eh.resume, which does not have this attribute.  Documentation and uses
to follow.

llvm-svn: 132252

llvm-svn: 132250

llvm-svn: 132249

to load/store i64 values. Since there's no current support to explicitly
declare such restrictions, implement it by using specific hardcoded register
pairs during isel.

llvm-svn: 132248

Add a couple of helper methods in the SourceManager API, isAtStartOfMacroInstantiation/isAtEndOfMacroInstantiation
useful only for source locations that point at a macro token.

llvm-svn: 132247

llvm-svn: 132246

Delete the Kill and Def markers in BlockInfo. They are no longer
necessary when BlockInfo describes a continuous live range.

This only affects the relatively rare kind of basic block where a live
range looks like this:

 |---x   o---|

Now live range splitting can pretend that it is looking at two blocks:

 |---x
         o---|

This allows the code to be simplified a bit.

llvm-svn: 132245

It is important that this function returns the same number of live blocks as
countLiveBlocks(CurLI) because live range splitting uses the number of live
blocks to ensure it is making progress.

This is in preparation of supporting duplicate UseBlock entries for basic blocks
that have a virtual register live-in and live-out, but not live-though.

llvm-svn: 132244

in MipsRegisterInfo::getCalleeSavedRegs so that both registers paired for a
double precision register get saved.

 

llvm-svn: 132243

register allocation dependent and will occasionally break. WIP in the
register allocator to model paired/etc registers.

rdar://9119939

llvm-svn: 132242

llvm-svn: 132241

Need this to prevent emitting illegal conditional move instructions. 

llvm-svn: 132240

llvm-svn: 132239

llvm-svn: 132238

llvm-svn: 132237

There was no way to check if a given register/mode pair was valid. We now return
an error code (-2) instead of asserting. If anyone thinks that an assert
at this point  is really needed, we can autogen a hasValidDwarfRegNum instead.

llvm-svn: 132236

and add some basic tests for them.

llvm-svn: 132235

the Win64 EH mechanism to implement GCC-style exceptions. LLVM supports
hardly anything else at this point!

llvm-svn: 132234