Clang's support for weakref is now better than llvm-gcc's :-)

We don't introduce a new symbol and we correctly mark undefined references weak only if there is no
definition or regular undefined references in the same file.

llvm-svn: 97733

Instruction (PLI) for disassembly only.

According to A8.6.120 PLI (immediate, literal), for example, different
instructions are generated for "pli [pc, #0]" and "pli [pc, #-0"].  The
disassembler solves it by mapping -0 (negative zero) to -1, -1 to -2, ..., etc.

llvm-svn: 97731

that somehow got through my testing.

llvm-svn: 97728

llvm-svn: 97727

  IF(condition(value)):
If the value satisfies the condition, the line is processed by lit;  otherwise
it is skipped.  A test with no unignored directives is resolved as Unsupported.

The test suite is responsible for defining conditions;  conditions are unary
functions over strings.  I've defined two conditions in the LLVM test suite,
TARGET (with values like those in TARGETS_TO_BUILD) and BINDING (with values
like those in llvm_bindings).  So for example you can write:
  IF(BINDING(ocaml)): RUN: %blah %s -o -
and the RUN line will only execute if LLVM was configured with the ocaml
bindings.

llvm-svn: 97726

llvm-svn: 97725

we now may have identical states with different analysis context.

Set the right AnalysisContext in state when entering and leaving a callee.

With both of the above changes, we can pass the test case.

llvm-svn: 97724

transformation much more careful. Truncating binary '01' to '1' sounds like it's
safe until you realize that it switched from positive to negative under a signed
interpretation, and that depends on the icmp predicate.

Also a few miscellaneous cleanups.

llvm-svn: 97721

the set.

llvm-svn: 97720

Our testing framework can't deal with disabled targets yet.

llvm-svn: 97719

targets except X86.

llvm-svn: 97718

llvm-svn: 97717

llvm-svn: 97716

hacky solution for translating.  Expanded on comment explaining
the hack a bit.

llvm-svn: 97714

llvm-svn: 97713

llvm-svn: 97709

we sometimes emit nodes multiple times to string buffers to size them.
Compute the histogram correctly.

llvm-svn: 97708

Re-enable test.

llvm-svn: 97707

Look ahead a bit to determine if a physical register def that is not marked dead is really alive. This is necessary to catch a lot of common cse opportunities for targets like x86.

llvm-svn: 97706

llvm-svn: 97705

sequence, just emit instruction predicates right before them.  This
exposes yet more factoring opportunitites, shrinking the X86 table 
to 79144 bytes.

llvm-svn: 97704

as the very last thing before node emission.  This should
dramatically reduce the number of times we do 'MatchAddress'
on X86, speeding up compile time.  This also improves comments
in the tables and shrinks the table a bit, now down to 
80506 bytes for x86.

llvm-svn: 97703

ABI conforming.

llvm-svn: 97702

llvm-svn: 97700

'%t' file was left around on my disk.  doh.

llvm-svn: 97699

destroyed, it could leave stubs in the StubToResolverMap, which would confuse
the lookup for subsequent lazy compilations.

llvm-svn: 97698

numbers a ComplexPat will match into.

llvm-svn: 97696

some builtins will rely on target knowledge.

llvm-svn: 97693

a patch my Micah Villmow for PR6465.

llvm-svn: 97692

llvm-svn: 97691

llvm-svn: 97690

Fix a logic error. An instruction that has a live physical register def cannot be CSE'ed, but it *can* be used to replace a common subexpression.

llvm-svn: 97688

llvm-svn: 97687

llvm-svn: 97686

llvm-svn: 97685

llvm-svn: 97684

llvm-svn: 97683

llvm-svn: 97682

Move MachineInstrExpressionTrait::getHashValue() out of line so it can skip over only virtual register defs. This matches what isEqual() is doing.

llvm-svn: 97680

llvm-svn: 97679