in functions which call __builtin_unwind_init()

__builtin_unwind_init() is an undocumented gcc intrinsic which has this effect,
and is used in libgcc_eh.

Goes part of the way toward fixing PR8541.

llvm-svn: 183984

llvm-svn: 183983

llvm-svn: 183982

Adhering to LLVM's ReST style for section markup.

llvm-svn: 183981

llvm-svn: 183980

llvm-svn: 183979

Summary:
Don't remove backslashes from block comments. Previously this
/* \    \ \ \ \ \
*/
would be turned to this:
/*
*/
which spoils some kinds of ASCII-art, people use in their comments. The behavior
was related to handling escaped newlines in block comments inside preprocessor
directives. This patch makes handling it in a more civilized way.

Reviewers: klimek

Reviewed By: klimek

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D979

llvm-svn: 183978

llvm-svn: 183977

llvm-svn: 183976

was        stc2 p0, c0, [r0]!
instead of stc2 p0, c0, [r0,#0]!

llvm-svn: 183975

llvm-svn: 183974

llvm-svn: 183973

llvm-svn: 183972

Give it the right register format so we can also emit it when AVX is enabled.

llvm-svn: 183971

Previously, it only ever fired for zeros which formed null pointers.
Now, hilariously, in C++98 this was almost anything. Including tricks
like warning on the divisor in this code:

typedef char c3[3];
size_t f(c3* ptr) {
  return (sizeof(ptr) / sizeof(*ptr)) / (size_t)(!(sizeof(ptr) % sizeof(*ptr)));
}

Why the RHS of the outer divide is a null pointer constant is a sordid
tale of sorrow. Anyways, the committee fixed this for C++11 and onward
as part of core isssue 903, and Richard recently implemented this fix
causing the warning to go away here (and elsewhere).

This patch restores the warning here and adds it for numerous other
somewhat obvious gaffes:

int g(int x) {
  return x / (int)(0.0);
}

The patch is essentially just using the full power of our constant
folding in Clang to produce the warning, but insisting that it must fold
to an *integer* which is zero so that we don't get false positives
anywhere.

llvm-svn: 183970

llvm-svn: 183969

llvm-svn: 183968

possible.

llvm-svn: 183967

This is a resubmit of r182877, which was reverted because it broken
MCJIT tests on ARM. The patch leaves MCJIT on ARM as it was before: only
enabled for iOS. I've CC'ed people from the original review and revert.

FastISel was only enabled for iOS ARM and Thumb2, this patch enables it
for ARM (not Thumb2) on Linux and NaCl, but not MCJIT.

Thumb2 support needs a bit more work, mainly around register class
restrictions.

The patch punts to SelectionDAG when doing TLS relocation on non-Darwin
targets. I will fix this and other FastISel-to-SelectionDAG failures in
a separate patch.

The patch also forces FastISel to retain frame pointers: iOS always
keeps them for backtracking (so emitted code won't change because of
this), but Linux was getting much worse code that was incorrect when
using big frames (such as test-suite's lencod). I'll also fix this in a
later patch, it will probably require a peephole so that FastISel
doesn't rematerialize frame pointers back-to-back.

The test changes are straightforward, similar to:
  http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130513/174279.html
They also add a vararg test that got dropped in that change.

I ran all of lnt test-suite on A15 hardware with --optimize-option=-O0
and all the tests pass. All the tests also pass on x86 make check-all. I
also re-ran the check-all tests that failed on ARM, and they all seem to
pass.

llvm-svn: 183966

llvm-svn: 183965

Summary:
COFFReference class is defined to represent relocation information for
COFFDefinedAtom, as ELFReference for ELFDefinedAtom. ReaderCOFF can now
read relocation entries and create COFFReferences accordingly.

I need to make WriterPECOFF to handle the relocation references created by
the reader, but this patch is already big, so I think it's probably better
to get it reviewed now.

Reviewers: Bigcheese

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D976

llvm-svn: 183964

llvm-svn: 183963

For consistency, change the address in the test case from 0xDEADBEEF to
0xCAFEBABE since 0xCAFEBABE that actually has a 2-byte alignment.

llvm-svn: 183962

- specify the architecture
- specify the platform
- specify if only external symbols should be dumped
- specify if types in the function signatures should be canonicalized

llvm-svn: 183961

llvm-svn: 183960

llvm-svn: 183959

llvm-svn: 183958

llvm-svn: 183957

Nothing useful to AArch64 will (should!) be found in any Mips-specific
directories.

Patch by Luke Zarko.

llvm-svn: 183956

llvm-svn: 183955

llvm-svn: 183954

The current functionality is extremely basic and a bit rough around the
edges, but it will flesh out in future commits.

llvm-svn: 183953

build with Clang's -Wimplicit-fallthrough warning enabled. The fallthrough
was not making this code better.

llvm-svn: 183952

process of trying to fix the related issue for block literals.)

llvm-svn: 183951

llvm-svn: 183950

Added a new makefile setting that can be set in LLDB makefiles: USE_LIBCPP. This will enable libc++ support.
Improved the makefile "clean" to include deleting all ".d.[0-9]+" files.

Added options to the "lldb/examples/lookup" example and made it build using the LLDB_BUILD_DIR. If this is not set, it will default to "/Applications/Xcode.app/Contents/SharedFrameworks" on Darwin.

Added options to the "lldb/examples/function" example and made it build using the LLDB_BUILD_DIR.

llvm-svn: 183949

llvm-svn: 183948

llvm-svn: 183947

llvm-svn: 183946

llvm-svn: 183945