[SystemZ] Add to --enable-targets=all

This patch finally enables the SystemZ target in the default build
(with --enable-targets=all).

Patch by Richard Sandiford.

llvm-svn: 181209

[SystemZ] Add configure bits

This patch wires up the SystemZ target in configure, so that it can now be
built using --enable-targets=systemz.   It is not yet included in the default
build (--enable-targets=all); this will be done by a follow-up patch.

Patch by Richard Sandiford.

llvm-svn: 181208

The intended semantics mirror autoconf, where the user is able to
specify a host triple, but if it's left to the build system then
"config.guess" is invoked for the default.

This also renames the LLVM_HOSTTRIPLE define to LLVM_HOST_TRIPLE to
fit in with the style of the surrounding defines.

llvm-svn: 181112

Should fix PR15877.

llvm-svn: 181026

llvm-svn: 180685

llvm-svn: 180684

Add basic zlib support to LLVM. This would allow to use compression/uncompression in selected LLVM tools.

llvm-svn: 180083

llvm-svn: 180025

it. NetBSD/ARM and TILE-Gx are examples for platforms that have an
unusable fenv.h and this avoids the need for a blacklist.

llvm-svn: 177865

issues.

llvm-svn: 177136

Since r174770 gcc version check is not needed because CXX_FLAG_CHECK
implements the workaround itself.

llvm-svn: 175080

to use -Wfoo instead of -Wno-foo. This works around a bug in some versions of
gcc, where it will silently accept an unknown -Wno-foo option, but will
generate an error for a compile which uses -Wno-foo if that compile also
triggers any warnings.

llvm-svn: 174770

Conditionalize constant folding of math intrinsics on the availability of an implementation on the host.  This is a little bit unfortunate, but until someone decides to implement a full libm for APFloat, we don't have a better way to get this functionality.

llvm-svn: 174561

llvm-svn: 174322

Makefile.config.

This is implied at the bottom of the help text of configure (besides
CC/CXX/LDFLAGS, already passed to Makefile.config).

For backward compatibility, the values of CFLAGS and CXXFLAGS defaults
to empty, overriding the default values provided by autoconf (for
example, '-g -O2' when CC=gcc').

$(CPP) is not used by our makefiles. Therefore, the value of CPP is
not passed to Makefile.config, despite beeing mentioned by 'configure
--help'.

llvm-svn: 174313

llvm-svn: 174288

llvm-svn: 174108

catches uses of an extremely minor and widely-available C++ extension (which
every C++ compiler I could find supports, but EDG and Clang reject in strict
mode).

The diagnosed code pattern looks like this:

struct X {
  union {
    struct {
      int a;
      int b;
    } S;
  };
};

llvm-svn: 174103

This patch adds support for AArch64 (ARM's 64-bit architecture) to
LLVM in the "experimental" category. Currently, it won't be built
unless requested explicitly.

This initial commit should have support for:
    + Assembly of all scalar (i.e. non-NEON, non-Crypto) instructions
      (except the late addition CRC instructions).
    + CodeGen features required for C++03 and C99.
    + Compilation for the "small" memory model: code+static data <
      4GB.
    + Absolute and position-independent code.
    + GNU-style (i.e. "__thread") TLS.
    + Debugging information.

The principal omission, currently, is performance tuning.

This patch excludes the NEON support also reviewed due to an outbreak of
batshit insanity in our legal department. That will be committed soon bringing
the changes to precisely what has been approved.

Further reviews would be gratefully received.

llvm-svn: 174054

Regenerate configure script for new option to make the buildbots happy.

Signed-off-by: Saleem Abdulrasool <compnerd@compnerd.org>
llvm-svn: 173893

This simply fixes up quoting of macro invocations to appease newer versions of autotools.

http://llvm-reviews.chandlerc.com/D332



Signed-off-by: Saleem Abdulrasool <compnerd@compnerd.org>
llvm-svn: 173878

Additional quoting for safety and satisfying newer autotools.  Fix a couple of 80 column violations.

http://llvm-reviews.chandlerc.com/D333



Signed-off-by: Saleem Abdulrasool <compnerd@compnerd.org>
llvm-svn: 173877

Some versions of gcc accept unsupported -W flags and run just fine if
there are no warnings, but die with an unsupported flag error if a
warning is encountered.  gcc 4.3 and gcc 4.4 both exhibit this
behavior for -Wno-maybe-uninitialized.  Therefore, if the flag check
for -Wno-maybe-uninitialized succeeds, only use
-Wno-maybe-uninitialized if we are using gcc version 4.7 or greater.
Use -Wno-uninitialized otherwise.

llvm-svn: 172543

If the compiler is gcc, disable variants of -Wuninitialized depending
on the gcc version.  This gets a lot of false positive warnings out of
the build.

Generate a new configure for the gcc -Wno-uninitialized fix.

Pick up -Wno-uninitialized from configure

Add the option -Wno[-maybe]-uninitialized as determined by configure.

llvm-svn: 172006

Some linux distibutions (for example, Mageia 2, Fedora 17) ship Clang that is
essentially broken for the end user.  Clang can not find or compile libstdc++
headers.

The issue is that our configure prefers clang over gcc, thus selecting a broken
Clang when a working GCC is available.

Now we detect this issue by compiling a simple program.  If it does not
compile, configure stops with an error suggesting the user to select a
different compiler.

llvm-svn: 171975

the source code should now be set up to handle this.

llvm-svn: 171570

wall time, user time, and system time since a process started.

For walltime, we currently use TimeValue's interface and a global
initializer to compute a close approximation of total process runtime.

For user time, this adds support for an somewhat more precise timing
mechanism -- clock_gettime with the CLOCK_PROCESS_CPUTIME_ID clock
selected.

For system time, we have to do a full getrusage call to extract the
system time from the OS. This is expensive but unavoidable.

In passing, clean up the implementation of the old APIs and fix some
latent bugs in the Windows code. This might have manifested on Windows
ARM systems or other systems with strange 64-bit integer behavior.

The old API for this both user time and system time simultaneously from
a single getrusage call. While this results in fewer system calls, it
also results in a lower precision user time and if only user time is
desired, it introduces a higher overhead. It may be worthwhile to switch
some of the pass timers to not track system time and directly track user
and wall time. The old API also tracked walltime in a confusing way --
it just set it to the current walltime rather than providing any measure
of wall time since the process started the way buth user and system time
are tracked. The new API is more consistent here.

The plan is to eventually implement these methods for a *child* process
by using the wait3(2) system call to populate an rusage struct
representing the whole subprocess execution. That way, after waiting on
a child process its stats will become accurate and cheap to query.

llvm-svn: 171551

VMCore to IR.

llvm-svn: 171360

llvm-svn: 171342

llvm-svn: 171108

in clang. The default remains to build those.

llvm-svn: 170134

Noticed by Dimitri Andric!

llvm-svn: 168319

llvm-svn: 168272

Approved by Chris Lattner.

llvm-svn: 167984

as valid triples denote  Mips target.

llvm-svn: 166961

The Apple buildbots have been modified not to pass --target,
so they shouldn't choke on a default program prefix anymore.

Patch by Rick Foos!

llvm-svn: 164956

Patch committed on behalf of Kirill Uhanov

llvm-svn: 164831

The Apple buildbots are set up to pass --target to configure for both
cross- and non-cross-compile builds, and the standard autoconf response
to this is to set the program prefix to '<target>-'. Until we can figure
out the proper way to handle this (don't pass --target? pass an explicit
--program-prefix=""? don't auto-populate program_prefix with target_alias?)
it's more important to keep the buildbots running.

This reverts r164633 / ba48ceb1a3802e20e781ef04ea2573ffae2ac414.

llvm-svn: 164651

llvm-svn: 164633

whether or not we want to print out backtrace information. Useful
for libraries that don't need backtrace information on a crash.

rdar://11844710

llvm-svn: 164426