Make various changes suggested by Chris.

llvm-svn: 79358

Privatize the ValueHandle global map.  Because this is used so heavily throughout the code base, locking all accesses to
it is not practical performance-wise.

llvm-svn: 79355

llvm-svn: 79353

llvm-svn: 79351

llvm-svn: 79346

TargetData is not present. It still uses TargetData when available.
This generalization also fixed some limitations in the TargetData
case; the attached testcase covers this.

llvm-svn: 79344

llvm-svn: 79343

remove RemoveDuplicateSuccessor, as it is no longer necessary, and because
it breaks assumptions made in
MachineBasicBlock::isOnlyReachableByFallthrough.

Convert test/CodeGen/X86/omit-label.ll to FileCheck and add a testcase
for PR4732.

test/CodeGen/Thumb2/thumb2-ifcvt2.ll sees a diff with this commit due to
it being bugpoint-reduced to the point where it doesn't matter what the
condition for the branch is.

Add some more interesting code to
test/CodeGen/X86/2009-08-06-branchfolder-crash.ll, which is the testcase
that originally motivated the RemoveDuplicateSuccessor code, to help
verify that the original problem isn't being re-broken.

llvm-svn: 79338

unruly indices for arrays that are members of structs.

llvm-svn: 79337

Patch by Dmitry Gorbachev!

llvm-svn: 79334

llvm-svn: 79325

MCAsmStreamer.  Based on this, eliminate the current section from AsmPrinter.

While I'm at it, clean up the last of the horrible "switch to null section" stuff
and add an assert.  This change is in preparation for completely eliminating 
asmprinter::switchtosection.

llvm-svn: 79324

an EHFrame section, so we just emit ehframe data into a random section.

This is clearly bad.

llvm-svn: 79323

llvm-svn: 79321

llvm-svn: 79318

send instructions like:

NEW: 	movl	"L___stack_chk_guard$non_lazy_ptr" - "L1$pb"(%esi), %eax
OLD: 	movl	L___stack_chk_guard$non_lazy_ptr-"L1$pb"(%esi), %eax

through the streamer.  Several fixmes.

llvm-svn: 79317

 - Patch by Yonggang Luo.

llvm-svn: 79315

 - Patch by Yonggang Luo.

llvm-svn: 79314

llvm-svn: 79313

llvm-svn: 79312

be able to understand ;-)

llvm-svn: 79311

llvm-svn: 79306

llvm-svn: 79298

try to use i686-darwin to build for arm-eabi, you'll quickly run into
several false assumptions that the target OS must be the same as the
host OS. These patches split $(OS) into $(HOST_OS) and $(TARGET_OS) to
help builds like "make check" and the test-suite able to cross
compile. Along the way a target of *-unknown-eabi is defined as
"Freestanding" so that TARGET_OS checks have something to work with.

Patch by Sandeep Patel!

llvm-svn: 79296

returns a log2 value.

llvm-svn: 79293

for a single "m" constraint; this is wrong because the
opcode of a load or store would have to change in parallel.
This patch makes it always compute addresses into a register,
which is correct but not as efficient as possible.  7144566.

llvm-svn: 79292

llvm-svn: 79289

llvm-svn: 79287

llvm-svn: 79274

llvm-svn: 79272

llvm-svn: 79264

llvm-svn: 79263

llvm-svn: 79262

llvm-svn: 79258

llvm-svn: 79256

llvm-svn: 79255

llvm-svn: 79254

Clear the uniquing table when initializing TLOF to avoid a crash when the TLOF is reinitialized with a different MCContext.

llvm-svn: 79253

llvm-svn: 79252

more properly belong. This allows removing the front-end conditionalized
SJLJ code, and cleans up the generated IR considerably. All of the
infrastructure code (calling _Unwind_SjLj_Register/Unregister, etc) is
added by the SjLjEHPrepare pass.

llvm-svn: 79250