a trivial unittest would have caught.  This revision also adds the trivial
unittest.

llvm-svn: 82675

computation, and some cosmetics.

llvm-svn: 82660

llvm-svn: 82657

llvm-svn: 82656

is also the name of their type, as declarations like "EVT EVT" look
really odd.

llvm-svn: 82654

The machine code verifier did not check for explicit operands correctly. It
used MachineInstr::getNumExplicitOperands, but that method may cheat and use
the declared count in the TargetInstrDesc.

Now we check the explicit operands one at a time in visitMachineOperand.

llvm-svn: 82652

default implementation.  Update comment on the default version, which made it
sound like most targets override it.  Currently only X86 and SystemZ override
this method.

llvm-svn: 82651

llvm-svn: 82647

This fixes PR5031. Unfortunately, there is no small testcase :(

llvm-svn: 82643

llvm-svn: 82641

llvm-svn: 82638

Fix bug in kill flag updating for post-register-allocation scheduling. When the kill flag of a superreg needs to be cleared because there are one or more subregs live, we instead add implicit-defs of those subregs and leave the kill flag on the superreg. This allows us to end the live-range of the superreg without ending the live-ranges of the subregs.

llvm-svn: 82629

llvm-svn: 82622

of the defs are processed.
Also fix a implicit_def propagation bug: a implicit_def of a physical register
should be applied to uses of the sub-registers.

llvm-svn: 82616

llvm-svn: 82610

"the jit has not been linked in" if the interpreter failed.

This fixes a unit test failure.

llvm-svn: 82601

llvm-svn: 82600

two different places for printing MachineMemOperands.

Drop the virtual from Value::dump and instead give Value a
protected virtual hook that can be overridden by subclasses
to implement custom printing. This lets printing be more
consistent, and simplifies printing of PseudoSourceValue
values.

llvm-svn: 82599

llvm-svn: 82597

llvm-svn: 82591

llvm-svn: 82561

llvm-svn: 82554

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

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

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: 82532

ExecuteAndWait.

llvm-svn: 82522

 - 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