Make the text of this file a little more useful.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16150 91177308-0d34-0410-b5e6-96231b3b80d8

Don't just assume that either uint64_t or u_int64_t is available. Instead,
give preference to uint64_t if it exists. If not, check for u_int64_t. If
that doesn't exist either, then error out.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16149 91177308-0d34-0410-b5e6-96231b3b80d8

Change the way we choose a free register: instead of picking the first
free allocatable register, we prefer the a free one with the most uses
of inactive intervals.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16148 91177308-0d34-0410-b5e6-96231b3b80d8

Change the way we choose a free register: instead of picking the first
free allocatable register, we prefer the a free one with the most uses
of inactive intervals. This causes less spills and performes a bit
better compared to gcc:

Program                 | GCC/LLC (Before)| GCC/LLC (After)
164.gzip/164.gzip       | 0.59            | 0.60
175.vpr/175.vpr         | 0.57            | 0.58
176.gcc/176.gcc         | 0.59            | 0.61
181.mcf/181.mcf         | 0.94            | 0.95
186.crafty/186.crafty   | 0.62            | 0.62
197.parser/197.parser   | 0.89            | 0.88
252.eon/252.eon         | 0.61            | 0.66
253.perlbmk/253.perlbmk | 0.79            | 0.84
254.gap/254.gap         | 0.81            | 0.81
255.vortex/255.vortex   | 0.92            | 0.93
256.bzip2/256.bzip2     | 0.69            | 0.69
300.twolf/300.twolf     | 0.91            | 0.90

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16147 91177308-0d34-0410-b5e6-96231b3b80d8

Added a check for u_int64_t, which is used by Interix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16145 91177308-0d34-0410-b5e6-96231b3b80d8

Added u_int64_t because some systems use that instead of uint64_t.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16144 91177308-0d34-0410-b5e6-96231b3b80d8

We don't need to sort the added vector as unhandled intervals are
stored in a binary heap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16143 91177308-0d34-0410-b5e6-96231b3b80d8

Convert remaining X-Form and Pseudo instructions over to asm writer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16142 91177308-0d34-0410-b5e6-96231b3b80d8

Pull in definition of std::unary_function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16140 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak build

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16139 91177308-0d34-0410-b5e6-96231b3b80d8

Back to compiling land for v8

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16138 91177308-0d34-0410-b5e6-96231b3b80d8

Changes For Bug 352
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8

Be a bit more efficient when processing the active and inactive
lists. Instead of scanning the vector backwards, scan it forward and
swap each element we want to erase. Then at the end erase all removed
intervals at once. This doesn't save much: 0.08s out of 4s when
compiling 176.gcc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16136 91177308-0d34-0410-b5e6-96231b3b80d8

Give a better assertion if we see a use before a def.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16135 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure <cassert> is included for platforms that don't include it via
other header files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16134 91177308-0d34-0410-b5e6-96231b3b80d8

mkdtemp doesn't exist on Cygwin. Use tempnam & mkdir instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16133 91177308-0d34-0410-b5e6-96231b3b80d8

Make CommandLine prefix error output with the name of the program.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16129 91177308-0d34-0410-b5e6-96231b3b80d8

Initial commit for platform independent system configuration support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16128 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for FreeBSD

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16127 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for Interix and FreeBSD

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16126 91177308-0d34-0410-b5e6-96231b3b80d8

Actually define PreventCoreFiles in the sys namespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16125 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new abstraction, SysConfig for platform independent system
configuration calls. Right now this just contains PreventCoreFiles so that
bugpoint can by platform independent.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16124 91177308-0d34-0410-b5e6-96231b3b80d8

Minor code clarity changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16123 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a "test" botch.
Alphabetize the platform list
Install some AC_MSG_CHECKING/AC_MSG_RESULT pairs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16122 91177308-0d34-0410-b5e6-96231b3b80d8

convert M and MD form instructions to generated asm writer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16121 91177308-0d34-0410-b5e6-96231b3b80d8

Recognize Interix systems as if they were SunOS and make sure we don't
attempt to configure for "Unknown" system types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16120 91177308-0d34-0410-b5e6-96231b3b80d8

Move the GetTemporaryDirectory function from "generic Unix" to platform
specific.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16119 91177308-0d34-0410-b5e6-96231b3b80d8

Add inclusion of assert.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16118 91177308-0d34-0410-b5e6-96231b3b80d8

Initial commit of a configuration file for compiling C++ programs with
the file name pattern *.cpp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16117 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the "setIncludePaths" and "setSymbolDefines" interface methods.
Revise token substitution to be a little faster.
Clean up exception throwing, make sure its always a std::string.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16116 91177308-0d34-0410-b5e6-96231b3b80d8

Pass lists of -I and -D options through to the Compiler Driver.
Handle -g and -Wxxx for GCC compatibility

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16115 91177308-0d34-0410-b5e6-96231b3b80d8

Add a blurb about exploiting the use of external storage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16114 91177308-0d34-0410-b5e6-96231b3b80d8

Move yet more instructions over to being printed by the generated asm writer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16112 91177308-0d34-0410-b5e6-96231b3b80d8

Abbreviate the long descriptions which are now in docs/SystemLibrary.html.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16111 91177308-0d34-0410-b5e6-96231b3b80d8

Reduce the number of arguments in the instruction builder and make some
improvements on instruction selection that account for register and frame
index bases.

Patch contributed by Jeff Cohen. Thanks Jeff!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16110 91177308-0d34-0410-b5e6-96231b3b80d8

Need to throw std::string not const char* if we want error messages to be
caught.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16109 91177308-0d34-0410-b5e6-96231b3b80d8

Synchronize documentation of configuration items and substitutions with
current reality of llvmc implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16108 91177308-0d34-0410-b5e6-96231b3b80d8

Convert A-Form instructions to auto-generated asm writer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16107 91177308-0d34-0410-b5e6-96231b3b80d8

Register sizes should be specified in bits

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16106 91177308-0d34-0410-b5e6-96231b3b80d8

Improvements to int->float cast code for PPC-64

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16105 91177308-0d34-0410-b5e6-96231b3b80d8

Must link against new LLVMsystem library

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16104 91177308-0d34-0410-b5e6-96231b3b80d8

RemoveFileOnSignal is now in sys:: namespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16103 91177308-0d34-0410-b5e6-96231b3b80d8

Put this change back in after testing from Reid proved its innocence.  getSpillSize now returns value in bits

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16102 91177308-0d34-0410-b5e6-96231b3b80d8

Update doxygen comment now that getSpillSize is supposed to return value in bits

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16101 91177308-0d34-0410-b5e6-96231b3b80d8

Add a declaration of environ global for Darwin

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16100 91177308-0d34-0410-b5e6-96231b3b80d8

Add a missing header file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16099 91177308-0d34-0410-b5e6-96231b3b80d8

Add an assert to cature null Operands. It is better to catch it here than
to SIGSEGV in the bowels of isa<...> later.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16098 91177308-0d34-0410-b5e6-96231b3b80d8

Signals support has been moved to lib/System

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16097 91177308-0d34-0410-b5e6-96231b3b80d8

Updated to create a link needed for correct lib/System compilation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16096 91177308-0d34-0410-b5e6-96231b3b80d8

Add lib/System ahead of lib/Support in case there are operating system
issues.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16095 91177308-0d34-0410-b5e6-96231b3b80d8

Link with LLVMsystem.a for operating system independence.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16094 91177308-0d34-0410-b5e6-96231b3b80d8

RemoveFileOnErrorSignal is now in the llvm::sys namespace. Adjust
accordingly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16093 91177308-0d34-0410-b5e6-96231b3b80d8

Add the LLVMsystem.a library as it is now used for operating system
independence of the tool.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16092 91177308-0d34-0410-b5e6-96231b3b80d8

The functions in Signal.h are now in the llvm::sys namespace - adjust

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16091 91177308-0d34-0410-b5e6-96231b3b80d8

add llvmc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16090 91177308-0d34-0410-b5e6-96231b3b80d8

Convert llvmc to use the lib/System interface instead of directly
using Unix operating system calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16089 91177308-0d34-0410-b5e6-96231b3b80d8

Move a warning comment to where it should have been in the first place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16088 91177308-0d34-0410-b5e6-96231b3b80d8

Correct the vim: specification

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16087 91177308-0d34-0410-b5e6-96231b3b80d8

Include some additional header files.
Fix the banner length.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16086 91177308-0d34-0410-b5e6-96231b3b80d8

Initial platform independent implementation of operating system concept
of "Signals" (cleanup after fatal errors).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16085 91177308-0d34-0410-b5e6-96231b3b80d8

Initial commit of an platform-indepdendent implementation for the
"Program" operating system concept (find and execute programs).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16084 91177308-0d34-0410-b5e6-96231b3b80d8

Put the lib/System interface functions in llvm::sys namespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16083 91177308-0d34-0410-b5e6-96231b3b80d8

Create a link from $BUILD_OBJ_ROOT/lib/System/platform to
$BUILD_SRC_ROOT/lib/System/$build which gives us the ability to
configure the lib/System for the current type of operating system.
Also cleaned up some indentation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16082 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the following missing functionality in the PPC backend:
cast fp->bool
cast ulong->fp
algebraic right shift long by non-constant value
These changes tested across most of the test suite.  Fixes Regression/casts

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16081 91177308-0d34-0410-b5e6-96231b3b80d8

Initial commit of the platform agnostic interface to finding and executing
programs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16080 91177308-0d34-0410-b5e6-96231b3b80d8

Add a function to remove whole directorys on fatal signal.
Doxygenify function comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16079 91177308-0d34-0410-b5e6-96231b3b80d8

Revise the design of the Path concept per peer review. Too many changes to
note individually but these essence of it is to not derive from
std::string, clarify the interface, and provide better documentation.
There is now also (untested) implementations for AIX, Darwin, and SunOS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16078 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16077 91177308-0d34-0410-b5e6-96231b3b80d8

Now that LiveIntervals::addIntervalsForSpills is fixed, do not require
LiveVariables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16076 91177308-0d34-0410-b5e6-96231b3b80d8

Only update LiveVariables if it is available. addIntervalsForSpills
runs after the initial run of the live interval analysis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16075 91177308-0d34-0410-b5e6-96231b3b80d8

Back out this change as it broke the build last night. This should be
investicated further as the linearscan variants don't really need
LiveVariables...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16074 91177308-0d34-0410-b5e6-96231b3b80d8

Back out change to divide getSpillSize by 8 until I figure out why it breaks x86, which has register sizes in bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16073 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typo in the bytecode format documentation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16072 91177308-0d34-0410-b5e6-96231b3b80d8

The linear scan variants do not require the LiveVariables analysis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16071 91177308-0d34-0410-b5e6-96231b3b80d8

Register sizes are in bits, not bytes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16070 91177308-0d34-0410-b5e6-96231b3b80d8

Add getLastBlock member. This is useful when growing a densemap keyed
on MachineBasicBlocks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16069 91177308-0d34-0410-b5e6-96231b3b80d8

Add MachineBasicBlock2IndexFunctor. This is useful for densemaps from
MachineBasicBlocks to an arbitrary type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16068 91177308-0d34-0410-b5e6-96231b3b80d8

Add size member function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16067 91177308-0d34-0410-b5e6-96231b3b80d8

Add more content.

This isn't in reviewable shape yet, unless you're curious.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16066 91177308-0d34-0410-b5e6-96231b3b80d8

Bug 430 Fixed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16065 91177308-0d34-0410-b5e6-96231b3b80d8

Correctly compute the number of compaction tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16064 91177308-0d34-0410-b5e6-96231b3b80d8

Prevent an empty compaction table from being written to the bytecode file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16063 91177308-0d34-0410-b5e6-96231b3b80d8

Add the CompactionTableIsEmpty function so that we can determine if a
CompactionTable really needs to be emitted. This is not a straight forward
computation, hence the need for a member function here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16062 91177308-0d34-0410-b5e6-96231b3b80d8

Use newly added API in MRegisterInfo and don't expose the allocatable
register set anymore. Its users now use the MRegisterInfo API.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16061 91177308-0d34-0410-b5e6-96231b3b80d8

Use newly added API in MRegisterInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16060 91177308-0d34-0410-b5e6-96231b3b80d8

Add getAllocatableSet() function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16059 91177308-0d34-0410-b5e6-96231b3b80d8

Provide some meta tags for this document.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16058 91177308-0d34-0410-b5e6-96231b3b80d8

Add the default table related styles

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16057 91177308-0d34-0410-b5e6-96231b3b80d8

Document the rational for the #include hierarchy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16056 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16055 91177308-0d34-0410-b5e6-96231b3b80d8

First cut at a README for lib/System explaining the #inclusion rules and
design criteria.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16054 91177308-0d34-0410-b5e6-96231b3b80d8

Add a README explaining the intended content of this directory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16053 91177308-0d34-0410-b5e6-96231b3b80d8

Add default index functor (an identity functor). You could use a
vector directly to get the same functionality but using a DenseMap
makes the code more readable IMO.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16052 91177308-0d34-0410-b5e6-96231b3b80d8

Previous checkin broke printf(%a) support for fp constants-- re-fix it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16051 91177308-0d34-0410-b5e6-96231b3b80d8

New version of Bill Wendling's PR33 patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16050 91177308-0d34-0410-b5e6-96231b3b80d8

Fix documentation.
Make the library name LLVMsystem instead of just system so as to not
to be confused with other "system" libraries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16049 91177308-0d34-0410-b5e6-96231b3b80d8

Initial implementation of the Path operating system concept.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16048 91177308-0d34-0410-b5e6-96231b3b80d8

License for this library.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16047 91177308-0d34-0410-b5e6-96231b3b80d8

Update to include tools/llvmc and lib/System as having additional copyright
licenses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16046 91177308-0d34-0410-b5e6-96231b3b80d8

License file for llvmc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16045 91177308-0d34-0410-b5e6-96231b3b80d8