folding optimizations.

llvm-svn: 89109

distinguish between them and the more generic instructions (add, mov, and ldr).

llvm-svn: 89108

It was too difficult to keep the heuristics for merging and duplication
consistent.

llvm-svn: 89105

llvm-svn: 89099

llvm-svn: 89093

2.  Allow SCCIterator to work with inverse graphs.
3.  Fix an incorrect comment in GraphTraits.h (the type in the comment 
was given as GraphType* when it is actually const GraphType &).
Patch by Patrick Alexander Simmons.

llvm-svn: 89091

programs that depend on native shared libraries.  Patch by Timo Lindfors.

llvm-svn: 89087

llvm-svn: 89082

llvm-svn: 89081

 - I plan on fixing/workarounding this, but until then I'd like the bots to stay
   green.

llvm-svn: 89077

llvm-svn: 89076

llvm-svn: 89075

as the isSigned bool to CreateIntCast by having this resolve to a call
to a private method, rather than by using a gcc attribute.

llvm-svn: 89067

llvm-svn: 89066

libffi support and that the interpreter can't call external functions without
it. Patch by Timo Juhani Lindfors! Fixes PR5466.

llvm-svn: 89062

llvm-svn: 89059

llvm-svn: 89056

more than one place. No intended functionality change.

llvm-svn: 89024

is analyzable so it can be updated. If it's not, be safe and don't move the
block.

llvm-svn: 89022

llvm-svn: 89021

llvm-svn: 89019

unconditional branches or fallthroghes. Instcombine/SimplifyCFG
should be simplifying branches with known conditions.

This fixes some problems caused by these transformations not
updating the MachineBasicBlock CFG.

llvm-svn: 89017

llvm-svn: 89016

right type.

llvm-svn: 89014

llvm-svn: 89011

llvm-svn: 89007

llvm-svn: 89002

llvm-svn: 89001

0b1110 (ALways).  This is so that the disassembler decoder can distinguish among
BX_RET, BRIND, and BXr9.

llvm-svn: 89000

in this testcase.

llvm-svn: 88998

by the recent FixedStackPseudoSourceValue-related changes, now that
the specific bug that affected it is fixed, in r88954.

llvm-svn: 88997

address space (though it only uses a small fraction of that), and the
buildbots disallow that.

Also add a comment to the Makefile's ulimit line warning future
developers that changing it won't work.

llvm-svn: 88994

llvm-svn: 88991

uninitialized memory.

llvm-svn: 88985

The large code model is documented at
http://www.x86-64.org/documentation/abi.pdf and says that calls should
assume their target doesn't live within the 32-bit pc-relative offset
that fits in the call instruction.

To do this, we turn off the global-address->target-global-address
conversion in X86TargetLowering::LowerCall(). The first attempt at
this broke the lazy JIT because it can separate the movabs(imm->reg)
from the actual call instruction. The lazy JIT receives the address of
the movabs as a relocation and needs to record the return address from
the call; and then when that call happens, it needs to patch the
movabs with the newly-compiled target. We could thread the call
instruction into the relocation and record the movabs<->call mapping
explicitly, but that seems to require at least as much new
complication in the code generator as this change.

To fix this, we make lazy functions _always_ go through a call
stub. You'd think we'd only have to force lazy calls through a stub on
difficult platforms, but that turns out to break indirect calls
through a function pointer. The right fix for that is to distinguish
between calls and address-of operations on uncompiled functions, but
that's complex enough to leave for someone else to do.

Another attempt at this defined a new CALL64i pseudo-instruction,
which expanded to a 2-instruction sequence in the assembly output and
was special-cased in the X86CodeEmitter's emitInstruction()
function. That broke indirect calls in the same way as above.

This patch also removes a hack forcing Darwin to the small code model.
Without far-call-stubs, the small code model requires things of the
JITMemoryManager that the DefaultJITMemoryManager can't provide.

Thanks to echristo for lots of testing!

llvm-svn: 88984

Don't build examples by default, use BUILD_EXAMPLES=1 to build them. The only utility of this is testing that we keep the examples up to date, I will just make the buildbots run with this flag.

llvm-svn: 88979

disk space, and increasing battery lifetime. :)

llvm-svn: 88978

llvm-svn: 88977

- Check memoperand alignment instead of checking stack alignment. Most load / store folding instructions are not referencing spill stack slots.
- Mark MOVUPSrm re-materializable.

llvm-svn: 88974

llvm-svn: 88973