buffer", while we work out a solution.

Dan convinced me that making debugging annoying for him is worse than 10x being
slower for me. :)

llvm-svn: 82553

llvm-svn: 82552

llvm-svn: 82551

GetProcessId() was introduced only in Windows XP, and we want to support earlier
versions.

llvm-svn: 82548

llvm-svn: 82544

commands except the last one, instead redirect the stderr to a temporary
file. This sidesteps a potential deadlocking issue.

llvm-svn: 82538

Add a magic LLVM_DISABLE_CRT_DEBUG environment variable which we check in RegisterHandler and use to disable the Win32 crash dialogs. These are a major blocker to any kind of automated testing.

Also, tweak the 'lit' test runner to set this variable unconditionally.

llvm-svn: 82537

llvm-svn: 82536

Fix PR5024. LiveVariables::FindLastPartialDef should return a set of sub-registers that were defined by the last partial def, not just a single sub-register.

llvm-svn: 82535

llvm-svn: 82534

llvm-svn: 82533

llvm-svn: 82532

llvm-svn: 82530

llvm-svn: 82529

llvm-svn: 82528

llvm-svn: 82527

ExecuteAndWait.

llvm-svn: 82522

llvm-svn: 82521

llvm-svn: 82520

 - This also fixes a dereference of std::string::end, which makes MSVC unhappy and was causing all the static analyzer clang tests to fail.

llvm-svn: 82517

static const class member into each translation unit, with external linkage???
 - If someone understands this issue better, please clue me in, I haven't
   consulted the standard yet.

llvm-svn: 82516

Switch DIDescriptor to use a TrackingVH. - This makes it much safer to work with debug info, since it was extraordinarily easy to have dangling pointers thanks to MDNode uniquing.

llvm-svn: 82507

This is designed for tracking a value even when it might move (like WeakVH), but it is an error to delete the referenced value (unlike WeakVH0. TrackingVH is templated like AssertingVH on the tracked Value subclass, it is an error to RAUW a tracked value to an incompatible type.

For implementation reasons the latter error is only diagnosed on accesses to a mis-RAUWed TrackingVH, because we don't want a virtual interface in a templated class.

The former error is also only diagnosed on access, so that clients are allowed to delete a tracked value, as long as they don't use it. This makes it easier for the client to reason about destruction.

llvm-svn: 82506

llvm-svn: 82505

%S0<def> = EXTRACT_SUBREG %Q0<kill>, 1
to
%S0<def> = IMPLICIT_DEF %Q0<imp-use,kill>

Implicit_def does not *read* any register so the operand should be marked "implicit". The missing "implicit" marker on the operand is wrong, but it doesn't actually break anything.

llvm-svn: 82503

take into consideration that the result of an invoke is only valid in
the normal dest, not the unwind dest.  This caused 'PHINode::hasConstantValue'
to return true in an invalid situation, causing mem2reg to delete a phi that
was actually needed.  This caused a crash building 483.xalancbmk.

llvm-svn: 82491

no functionality change.

llvm-svn: 82490

llvm-svn: 82489

llvm-svn: 82488

variable increment / decrement slighter high priority. 

This has major impact on some micro-benchmarks. On MultiSource/Applications
and spec tests, it's a minor win. It also reduce 256.bzip instruction count
by 8%, 55 on 164.gzip on i386 / Darwin.

llvm-svn: 82485

llvm-svn: 82483

the base pointer, without the offset. This matches MemSDNode's
new alignment behavior, and holds more interesting information.

llvm-svn: 82473

llvm-svn: 82471

loads in order to reduce register pressure.

llvm-svn: 82470

And fix a bug with the behavior of min/max instructions formed from
fcmp uge comparisons.

Also, use FiniteOnlyFPMath() for this code instead of UnsafeFPMath,
as it is more specific.

llvm-svn: 82466

PseudoSourceValue already effectively represents the offset from the
frame base, so the actual offset should not be added to it.

llvm-svn: 82465

bootstrap problems.

llvm-svn: 82464

by setPreservesCFG().

llvm-svn: 82463

helpful, and it didn't correctly handle the case of constants input
to PHIs for backedges.

llvm-svn: 82462

arrays and structs, which cannot be bitcast to integers.

llvm-svn: 82460