llvm-svn: 118883

needs to use the current pc and current offset in two ways:  To 
determine which function we are currently executing, and the decide
how much of that function has executed so far.  For the former use,
we need to back up the saved pc value by one byte if we're going to
use the correct function's unwind information -- we may be executing
a CALL instruction at the end of a function and the following instruction
belongs to a new function, or we may be looking at unwind information
which only covers the call instruction and not the subsequent instruction.

But when we're talking about deciding which row of an UnwindPlan to
execute, we want to use the actual byte offset in the function, not the
byte offset - 1.

Right now RegisterContextLLDB is tracking both the "real" offset and
an "offset minus one" and different parts of the class have to know 
which one to use and they need to be updated/set in tandem.  I want
to revisit this at some point.

The second change made in looking up eh_frame information; it was
formerly done by looking for the start address of the function we
are currently executing.  But it is possible to have unwind information
for a function which only covers a small section of the function's
address range.  In which case looking up by the start pc value may not
find the eh_frame FDE.

The hand-written _sigtramp() unwind info on Mac OS X, which covers
exactly one instruction in the middle of the function, happens to
trigger both of these issues.

I still need to get the UnwindPlan runner to handle arbitrary dwarf
expressions in the FDE but there's a good chance it will be easy to
reuse the DWARFExpression class to do this.

llvm-svn: 118882

Fix use of an uninitialized SourceLocation because DeclarationNameLoc failed to completely zero-initialize itself.
Now we explicitly memset all of its values.

This bug was uncovered by the 'Index/recursive-cxx-member-calls.cpp', which exhibited an assertion
on an i386 darwin build of clang.  Adding this test case back since the assertion is now resolved.

llvm-svn: 118881

direct-initialization (rather than copy-initialization) to initialize
the temporary, allowing explicit constructors. Fixes PR8342.

llvm-svn: 118880

assembly as well as registers that changed.

llvm-svn: 118879

llvm-svn: 118878

llvm-svn: 118877

llvm-svn: 118876

one store dead. This is especially noticeable in
SingleSource/Benchmarks/Shootout/objinst.

llvm-svn: 118875

llvm-svn: 118874

object diagnostic expressions while we work on the
logic for handling the timeout.

llvm-svn: 118873

llvm-svn: 118872

logic that supported calling functions with arbitrary
arguments.  We use ClangFunction for this, and the
low-level logic is only required to support one or two
pointer arguments.

llvm-svn: 118871

llvm-svn: 118869

They should not fail.

llvm-svn: 118868

exercise 'expression' command on namespaced variables.

llvm-svn: 118867

thread basic info state and not realize that a thread was already suspended
or if a thread was starting up and not ready to be displayed to the user
(in an uninterruptable state). If it is not user ready yet, we don't add it
to our list of threads that can be played with.

llvm-svn: 118866

llvm-svn: 118865

llvm-svn: 118864

llvm-svn: 118863

llvm-svn: 118862

    rdar://problem/8659840
    test failure: ./dotest.py -v -t -f NamespaceTestCase.test_with_dwarf_and_run_command

llvm-svn: 118861

the architecture and compiler specs.

llvm-svn: 118860

llvm-svn: 118859

llvm-svn: 118856

llvm-svn: 118854

Modify CursorVisitor to also walks CXXOperatorCallExprs using data-recursion.  Fixes <rdar://problem/8659019>.

llvm-svn: 118853

RegionStore/BasicStore: do not return UndefinedVal for accesses to concrete addresses; instead return UnknownVal.  This
leads it up to checkers (e.g., DereferenceChecker) to guard against illegal accesses (e.g., null dereferences).

Fixes PR 5272 and <rdar://problem/6839683>.

llvm-svn: 118852

llvm-svn: 118851

llvm-svn: 118848

to invoke the test driver.

llvm-svn: 118847

llvm-svn: 118846

and vaarg instructions.

llvm-svn: 118845

Fix minimum 16-bit signed value error exposed by MC asm parser tests
Add initial MC asm parser tests for the MBlaze backend

llvm-svn: 118844

llvm-svn: 118843

llvm-svn: 118842

testing for dereferenceable pointers into a helper function,
isDereferenceablePointer.  Teach it how to reason about GEPs
with simple non-zero indices.

Also eliminate ArgumentPromtion's IsAlwaysValidPointer,
which didn't check for weak externals or out of range gep
indices.

llvm-svn: 118840

llvm-svn: 118839

llvm-svn: 118837

llvm-svn: 118836