Augment CrashRecoveryContext to have registered "cleanup" objects that can be used to release resources during a crash.

llvm-svn: 127849

instead of copying.

llvm-svn: 127835

Add an argument to APInt's magic udiv calculation to specify the number of bits that are known zero in the divided number.

This will come in handy soon.

llvm-svn: 127828

report_fatal_error() invokes exit(). We know report_fatal_error() might not write messages to stderr when any errors were detected on FD == 2.

llvm-svn: 127726

FIXME: It is a temporal hack. We should detect as many "special file name" as possible.
llvm-svn: 127724

FIXME: We should use sys::fs::unique_file() in future.
llvm-svn: 127723

llvm-svn: 127705

llvm-svn: 127426

llvm-svn: 127417

llvm-svn: 127416

llvm-svn: 127413

support for creating buffers that cover only a part of a file.

llvm-svn: 127409

llvm-svn: 127241

llvm-svn: 127140

inefficient file system buffering if the writes are not a multiple of the desired
buffer size. Avoid this by limiting the large write to a multiple of the buffer
size and copying the remainder into the buffer.

Thanks to Dan for pointing this out.

llvm-svn: 127026

raw_ostream: If writing a string that is larger than the buffer, write it directly instead of doing many buffer-sized writes.

This caps the number of write(2) calls per string to a maximum of 2.

llvm-svn: 127010

llvm-svn: 126558

of a constant had a minor typo introduced when copying it from the book, which
caused it to favor negative approximations over positive approximations in many
cases. Positive approximations require fewer operations beyond the multiplication.

In the case of division by 3, we still generate code that is a single instruction
larger than GCC's code.

llvm-svn: 126097

llvm-svn: 125986

llvm-svn: 125943

llvm-svn: 125804

Add getAllOnesValue of FP numbers to Constants and APFloat.
Add more tests.

llvm-svn: 125776

No one uses *-mingw64. mingw-w64 is represented as {i686|x86_64}-w64-mingw32. In llvm side, i686 and x64 can be treated as similar way.

llvm-svn: 125747

llvm-svn: 125574

on the host OS.  Reviewed by dgregor.

llvm-svn: 125406

I have another way to achieve the same goal.

llvm-svn: 125239

llvm-svn: 125236

name of a path, after resolving symbolic links and eliminating excess
path elements such as "foo/../" and "./".

This routine still needs a Windows implementation, but I don't have a
Windows machine available. Help? Please?

llvm-svn: 125228

AC_CHECK_FUNCS seeks a symbol only in libs. We should check the declaration in string.h.

FIXME: I have never seen mingw(s) have strerror_s() (not _strerror_s()).
FIXME: Autoconf/CMake may seek strerror_s() with the definition MINGW_HAS_SECURE_API in future.
llvm-svn: 125172

Windows/Windows.h: Redefine _WIN32_WINNT here. mingw-w64 tends to define it as 0x0502 in its headers.

llvm-svn: 125171

Windows/Program.inc: Eliminate the declaration of SetInformationJobObject(). It should be provided with _WIN32_WINNT>=0x0500.

llvm-svn: 125170

llvm-svn: 125169

MemoryBuffer::getOpenFile to not close the file descriptor.

llvm-svn: 125128

llvm-svn: 124960

config.h.* have conditions whether each symbol is defined or not.
Autoconf and CMake may check symbols in libgcc.a for JIT on Mingw.

llvm-svn: 124950

Windows/Program.inc: Quote arguments when dubious characters (used by cmd.exe or MSYS shell) are included to invoke CreateProcess(). Thanks to Danil Malyshev.

llvm-svn: 124945

llvm-svn: 124864

llvm-svn: 124771

may be useful to understand "none", this is not the place for it.  Tweak
the fix to Normalize while there: the fix added in 123990 works correctly,
but I like this way better.  Finally, now that Triple understands some
non-trivial environment values, teach the unittests about them.

llvm-svn: 124720

llvm-svn: 124639