by Anton Korobeynikov!  This is a step towards closing PR786.

llvm-svn: 28447

llvm-svn: 28415

This is part of the on-going work on PR 761.

llvm-svn: 28414

llvm-svn: 28378

llvm-svn: 28368

llvm-svn: 28247

TargetData.h.  This should make recompiles a bit faster with my current
TargetData tinkering.

llvm-svn: 28238

llvm-svn: 28184

llvm-svn: 28182

llvm-svn: 28104

llvm-svn: 28102

llvm-svn: 28099

llvm-svn: 28093

llvm-svn: 28091

Refactor TargetMachine, pushing handling of TargetData into the target-specific subclasses.  This has one caller-visible change: getTargetData() now returns a pointer instead of a reference.

This fixes PR 759.

llvm-svn: 28074

basic block labels, consolidating the code to do so in one place for each
target.

llvm-svn: 28050

x86 and ppc for 100% dense switch statements when relocations are non-PIC.
This support will be extended and enhanced in the coming days to support
PIC, and less dense forms of jump tables.

llvm-svn: 27947

llvm-svn: 27651

letting the code generator handle them directly.

llvm-svn: 27539

llvm-svn: 27491

llvm-svn: 27225

llvm-svn: 27180

manner that the LowerSwitch LLVM to LLVM pass does: emitting a binary
search tree of basic blocks.  The new approach has several advantages:
it is faster, it generates significantly smaller code in many cases, and
it paves the way for implementing dense switch tables as a jump table by
handling switches directly in the instruction selector.

This functionality is currently only enabled on x86, but should be safe for
every target.  In anticipation of making it the default, the cfg is now
properly updated in the x86, ppc, and sparc select lowering code.

llvm-svn: 27156

llvm-svn: 27109

llvm-svn: 27088

llvm-svn: 27081

llvm-svn: 26994

Make the CBE and V9 backends create their own, since they're the only ones that use it.

llvm-svn: 26974

Make the PPC backend not dependent on BRTWOWAY_CC and make the branch
selector smarter about the code it generates, fixing a case in the
readme.

llvm-svn: 26814

llvm-svn: 26628

implement copysign as a native op if they have it.

llvm-svn: 26541

llvm-svn: 26403

instructions are expensive.

llvm-svn: 26298

and SUBE nodes that actually expose what's going on and allow for
significant simplifications in the targets.

llvm-svn: 26255

and ComputeMaskedBits to match the new improved versions in instcombine.
Tested against all of multisource/benchmarks on ppc.

llvm-svn: 26238

it, because this:

.bss
X:
.byte 0

results in the assembler warning: "initialization in bss segment".  Annoying.

llvm-svn: 26204

The ABI specifies that there is a register save area at the bottom of the
stack, which means the actual used pointer needs to be an offset from
the subtracted value.

llvm-svn: 26202

CALLSEQ_START nodes.

llvm-svn: 26143

intrinsics.

Autogen frameindex matcher

llvm-svn: 26107

llvm-svn: 26106