When truncating a result of a vector that is split we need
to use the result of the split vector, and not re-split the dead node.

llvm-svn: 160357

llvm-svn: 160356

buildbot failures.

llvm-svn: 160355

llvm-svn: 160354

llvm-svn: 160353

llvm-svn: 160352

ASTMatchers (lower level abstraction) to Tooling (higher level
abstraction).

llvm-svn: 160351

llvm-svn: 160350

llvm-svn: 160349

It now accepts an arbitrary inner matcher but is fully backwards
compatible.

llvm-svn: 160348

llvm-svn: 160347

large immediates. Add dag combine logic to recover in case the large
immediates doesn't fit in cmp immediate operand field.

int foo(unsigned long l) {
  return (l>> 47) == 1;
}

we produce

  %shr.mask = and i64 %l, -140737488355328
  %cmp = icmp eq i64 %shr.mask, 140737488355328
  %conv = zext i1 %cmp to i32
  ret i32 %conv

which codegens to

movq    $0xffff800000000000,%rax
andq    %rdi,%rax
movq    $0x0000800000000000,%rcx
cmpq    %rcx,%rax
sete    %al
movzbl    %al,%eax
ret

TargetLowering::SimplifySetCC would transform
(X & -256) == 256 -> (X >> 8) == 1
if the immediate fails the isLegalICmpImmediate() test. For x86,
that's immediates which are not a signed 32-bit immediate.

Based on a patch by Eli Friedman.

PR10328
rdar://9758774

llvm-svn: 160346

llvm-svn: 160345

Speculatively fix crashes by code inspection. Can't reproduce them yet.

llvm-svn: 160344

  - lib/Driver/Driver.cpp, tools/driver/driver.cpp: Exit status should not be propagated, although clang driver should catch exceptions.
  - test/Driver/crash-report.c: Add REQUIRES:shell for now.
    FIXME: setenv should work also on Lit.InternalShellRunner.
  - test/Driver/crash-report.c: Remove XFAIL.

Thanks to Chad, To point out the issue.

llvm-svn: 160343

test/Driver/crash-report.c: Small tweaks. 1) Use %t instead %T for TMP. 2) Set all of $TMPDIR, $TEMP and $TMP, or a certain host might set $TEMP.

llvm-svn: 160342

Some units tests crashed on a different platform.

llvm-svn: 160341

This places limits on CollectSubexprs to constrains the number of
reassociation possibilities. It limits the recursion depth and skips
over chains of nested recurrences outside the current loop.

Fixes PR13361. Although underlying SCEV behavior is still potentially bad.

llvm-svn: 160340

to build a type before seeing the definition.

llvm-svn: 160339

llvm-svn: 160338

the state of the unwind instructions once the prologue has finished.  If it hits an
early return epilogue in the middle of the function, re-instate the prologue after that
epilogue has completed so that we can still unwind for cases where the flow of control
goes past that early-return.  <rdar://problem/11775059>

Move the UnwindPlan operator== definition into the .cpp file, expand the definition a bit.

Add some casts to a SBCommandInterpreter::HandleCompletion() log statement so it builds without
warning on 64- and 32-bit systems.

llvm-svn: 160337

someone has set our file descriptor to -1 and crash in FD_SET...
<rdar://problem/11653966>

llvm-svn: 160336

 * Treat compound assignment as a use, at Jordy's request.
 * Always add compound assignments into the CFG, so we can correctly diagnose the use in 'return x += 1;'

llvm-svn: 160334

Define a 'null_frag' SDPatternOperator node, which if referenced in an
instruction Pattern, results in the pattern being collapsed to be as-if
'[]' had been specified instead. This allows supporting a multiclass
definition where some instaniations have ISel patterns associated and
others do not.

For example,
multiclass myMulti<RegisterClass rc, SDPatternOperator OpNode = null_frag> {
  def _x : myI<(outs rc:), (ins rc:), []>;
  def _r : myI<(outs rc:), (ins rc:), [(set rc:, (OpNode rc:))]>;
}

defm foo : myMulti<GRa, not>;
defm bar : myMulti<GRb>;

llvm-svn: 160333

llvm-svn: 160332

llvm-svn: 160331

use out of TransferFunctions, and compute it in advance rather than on-the-fly.

This allows us to handle compound assignments with DeclRefExprs on the RHS
correctly, and also makes it trivial to treat const& function parameters as not
initializing the argument. The patch also makes both of those changes.

llvm-svn: 160330

llvm-svn: 160329

<rdar://problem/11818967>

llvm-svn: 160328

Defer checking for registers in the MC AsmMatcher until the after user-defined match classes have been checked.  This allows the creation of MatchClass's that are supersets of a register class.

llvm-svn: 160327

<rdar://problem/11672978> Fixing an issue where an ObjC object might come out without a description because the expression used to obtain it would timeout before running to completion

llvm-svn: 160326

llvm-svn: 160325

This should fix the failure on Windows.

llvm-svn: 160324

llvm-svn: 160323

llvm-svn: 160322

when using Python < 2.7.0.  This is the case on Snow Leopard, where the tools are always
installed in /Developer.  This isn't a proper fix for really figuring out where Xcode
is installed, but should work to fix an obvious problem on Snow Leopard.

llvm-svn: 160321

llvm-svn: 160320

This code is very sensitive to the difference between "columns" as printed
and "bytes" (SourceManager columns). All variables are now named explicitly
and our assumptions are (hopefully) documented as both comment and assertion.

Whether parseable fixits should use byte offsets or Unicode character counts
is pending discussion on the mailing list; currently the implementation uses
bytes (and has no problems on lines containing multibyte characters).
This has been added to the user manual.

<rdar://problem/11877454>

llvm-svn: 160319

Found while investigating PR13330

llvm-svn: 160318

llvm-svn: 160317