Convert the C backend into a target, for use with LLC.  This allows us to use
the lowerallocations pass to eliminate malloc/free warnings and hackish code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11409 91177308-0d34-0410-b5e6-96231b3b80d8

Change how we create the cwriter, and add a buttload of libraries that it now
needs.  This will be fixed shortly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11407 91177308-0d34-0410-b5e6-96231b3b80d8

Change access to the cwriter

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11406 91177308-0d34-0410-b5e6-96231b3b80d8

Make the cwriter use the lowerinvoke pass so that it can either use "disabled exceptions" or
"expensive exceptions" controlled by an option.  Also refactor and eliminate a bunch of cruft.
This is a temporary solution and causes millions of warnings to pour out of programs that use
exceptions, but it should fix the problem with sparc and the 'write' declaration (PR190).
Subsequent changes will make this stink much less

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11405 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase.  The CFE should not generate illegal LLVM intrinsics, even if
the input program is horribly broken (like 126.gcc).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11401 91177308-0d34-0410-b5e6-96231b3b80d8

Added check for target machine endian-ness and put the result into
Makefile.config (ENDIAN variable is set to big or little).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11398 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for a bunch more functions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11395 91177308-0d34-0410-b5e6-96231b3b80d8

Remove getAllocatedRegNum(). Use getReg() instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11393 91177308-0d34-0410-b5e6-96231b3b80d8

Mark MachineBasicBlock::operator[] deprecated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11392 91177308-0d34-0410-b5e6-96231b3b80d8

Define DEPRECATED so that it can be used in function and variable
declarations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11391 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for fopen/fclose.  Specifically with fopen, we were marking all of the
operands as incomplete, though fopen is known to only read them.  This just adds
fclose for symmetry, though it doesn't gain anything.  This makes the dsgraphs for
181.mcf much more precise.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11390 91177308-0d34-0410-b5e6-96231b3b80d8

Use getNumVirtualRegs().

Whitespace cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11389 91177308-0d34-0410-b5e6-96231b3b80d8

Add getNumVirtualRegs().

Whitespace cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11388 91177308-0d34-0410-b5e6-96231b3b80d8

Bug fixed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11385 91177308-0d34-0410-b5e6-96231b3b80d8

Fix compilation of 126.gcc: intrinsic functions cannot throw, so they are not
allowed in invoke instructions.  Thus, if we are inlining a call to an intrinsic
function into an invoke site, we don't need to turn the call into an invoke!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11384 91177308-0d34-0410-b5e6-96231b3b80d8

Intrinsic functions cannot throw

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11383 91177308-0d34-0410-b5e6-96231b3b80d8

Updated to list all code/directories that have additional or alternate
licensing information.

Also added note to indicate that warrany disclaimer and the no-endorsement
clause applies to everything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11382 91177308-0d34-0410-b5e6-96231b3b80d8

Bug fix

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11381 91177308-0d34-0410-b5e6-96231b3b80d8

exit(1) instead of abort()'ing on error

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11380 91177308-0d34-0410-b5e6-96231b3b80d8

Fix buggy error message problem

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11379 91177308-0d34-0410-b5e6-96231b3b80d8

Fix spelling of `tendency'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11378 91177308-0d34-0410-b5e6-96231b3b80d8

Expose a pass ID for lower-invoke

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11377 91177308-0d34-0410-b5e6-96231b3b80d8

Expose a pass ID that can be 'required'

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11376 91177308-0d34-0410-b5e6-96231b3b80d8

Squish warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11375 91177308-0d34-0410-b5e6-96231b3b80d8

Restructure code to handle memcpy/memmove

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11374 91177308-0d34-0410-b5e6-96231b3b80d8

Right, memcpy READS memory too :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11373 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase for support for memcpy/memmove

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11372 91177308-0d34-0410-b5e6-96231b3b80d8

Fix off-by-one in Interpreter::getFirstVarArg(), which was punishing
any attempts by LLI to use varargs (possibly left over from the introduction
of IntrinsicLowering??)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11370 91177308-0d34-0410-b5e6-96231b3b80d8

Fine grainify namespacification, prune #includes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11369 91177308-0d34-0410-b5e6-96231b3b80d8

The Interpreter was failing the AtExit UnitTest. This fixes it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11367 91177308-0d34-0410-b5e6-96231b3b80d8

Update the example here in the header file.

I don't know about you guys, but I rarely read the .html manuals :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11366 91177308-0d34-0410-b5e6-96231b3b80d8

Include <iosfwd>.
Add prototypes for MachineBasicBlock's dump() and print() methods.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11365 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor MachineFunction::print() into MachineBasicBlock::print().
Add MachineBasicBlock::dump().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11364 91177308-0d34-0410-b5e6-96231b3b80d8

Add head-of-file comments and Doxygen comments.  Tighten up a lot of whitespace.
Rename SetMachineOperandConst's formal parameters to match other methods here.
Mark some methods as being used only by the SPARC back-end.
Fix a missing-paren bug in OutputValue().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11363 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for memcpy and memmove intrinsics.  Why isn't the cwriter using
the intrinsiclowering code?? :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11362 91177308-0d34-0410-b5e6-96231b3b80d8

New features

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11361 91177308-0d34-0410-b5e6-96231b3b80d8

Be a bit more specific about what the alignment value means and the restrictions on it

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11360 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase for PR233: [llvmgcc] Structure copies result in a LOT of code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11359 91177308-0d34-0410-b5e6-96231b3b80d8

Move ilist_trairs<MachineInstr> in MachineBasicBlock.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11358 91177308-0d34-0410-b5e6-96231b3b80d8

Add parent pointer to MachineInstr that points to owning
MachineBasicBlock. Also change opcode to a short and numImplicitRefs
to an unsigned char so that overall MachineInstr's size stays the
same.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11357 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed minor typos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11356 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for the llvm.memmove intrinsic

Patch graciously contributed by Reid Spencer!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11355 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for the llvm.memmove intrinsic.
Patch graciously contributed by Reid Spencer!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11354 91177308-0d34-0410-b5e6-96231b3b80d8

Urg, check in header I forgot.  :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11353 91177308-0d34-0410-b5e6-96231b3b80d8

Test that we get rep movs when calling memcpy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11352 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for the rep movs[bwd] instructions, and emit them when code
generating the llvm.memcpy intrinsic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11351 91177308-0d34-0410-b5e6-96231b3b80d8

Document the llvm.memcpy intrinsic.  Clean up some of the formatting of other
sections

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11350 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the llvm.memcpy intrinsic

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11349 91177308-0d34-0410-b5e6-96231b3b80d8

Rename the opCode instance variable to Opcode

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11348 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a dead field from MachineInstr!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11347 91177308-0d34-0410-b5e6-96231b3b80d8

This field is never read

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11346 91177308-0d34-0410-b5e6-96231b3b80d8

Change interface so that we can add to the end of a basic block
without getting an assertion from ilist that we are dereferencing
ilist<T>::end().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11345 91177308-0d34-0410-b5e6-96231b3b80d8

Add one more doxygen comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11344 91177308-0d34-0410-b5e6-96231b3b80d8

Express one of MachineOperand's many constructors in terms of another, by means of default arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11343 91177308-0d34-0410-b5e6-96231b3b80d8

Remove this MachineOpCodeFlags assertion - its test can never be false.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11342 91177308-0d34-0410-b5e6-96231b3b80d8

Remove these MachineOpCodeFlags and their accessor - they are never set.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11341 91177308-0d34-0410-b5e6-96231b3b80d8

Change MachineBasicBlock's vector of MachineInstr pointers into an
ilist of MachineInstr objects. This allows constant time removal and
insertion of MachineInstr instances from anywhere in each
MachineBasicBlock. It also allows for constant time splicing of
MachineInstrs into or out of MachineBasicBlocks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11340 91177308-0d34-0410-b5e6-96231b3b80d8

getOpCode() --> getOpcode().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11339 91177308-0d34-0410-b5e6-96231b3b80d8

Remove getOpCode(). Help doxygenify some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11338 91177308-0d34-0410-b5e6-96231b3b80d8

Ooops, top-level C++-comments aren't recognized by flex.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11337 91177308-0d34-0410-b5e6-96231b3b80d8

* Convert C comments to C++ style (why are some one way, some another?!)
* Delete extra space, extra blank comment lines
* Convert function comments to doxygen

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11336 91177308-0d34-0410-b5e6-96231b3b80d8

MachineInstr::getOpCode() --> getOpcode() in SPARC back-end.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11335 91177308-0d34-0410-b5e6-96231b3b80d8

If a node has more than 64 outgoing edges, make the edges go from the 'truncated' block,
instead of dropping them entirely.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11334 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typos in comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11333 91177308-0d34-0410-b5e6-96231b3b80d8

s/getOpCode/getOpcode

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11332 91177308-0d34-0410-b5e6-96231b3b80d8

Cosmetic improvements to this option.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11331 91177308-0d34-0410-b5e6-96231b3b80d8

Fix bug in initial check - when recompiling everything with llvm-native-gcc,
you have to erase the program and re-run the linker, too, before running the
checker.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11328 91177308-0d34-0410-b5e6-96231b3b80d8

add advice bullet about -check-exit-code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11327 91177308-0d34-0410-b5e6-96231b3b80d8

add description of -check-exit-code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11326 91177308-0d34-0410-b5e6-96231b3b80d8

Add check-exit-code option, defaulting to true.

Add ProgramExitedNonzero argument to executeProgram(), and make it
tell its caller whether the program exited nonzero.

Move executeProgramWithCBE() out of line, to ExecutionDriver.cpp, and remove
its extra arguments which are always defaulted.  Make it turn off
check-exit-code if the program exits nonzero while generating a reference
output.

Make diffProgram() assume that any nonzero exit code is a failure, if
check-exit-code is turned on.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11325 91177308-0d34-0410-b5e6-96231b3b80d8

Actually load profiling information now!  Block layout can use real, live,
actual profile info, and works!  :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11324 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typeo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11323 91177308-0d34-0410-b5e6-96231b3b80d8

Increase constness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11322 91177308-0d34-0410-b5e6-96231b3b80d8

Add an important prototype

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11320 91177308-0d34-0410-b5e6-96231b3b80d8

Fix copy-and-pastos

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11319 91177308-0d34-0410-b5e6-96231b3b80d8

Add skeleton profileinfoloader pass.  This will be enhanced to actually LOAD
a profile tommorow.  :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11318 91177308-0d34-0410-b5e6-96231b3b80d8

Remove assert as the only integer registers on the sparc are physical.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11317 91177308-0d34-0410-b5e6-96231b3b80d8

Factor profile information loading OUT of llvm-prof into libanalysis

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11316 91177308-0d34-0410-b5e6-96231b3b80d8

Fix previous broken commit. A MachineOperand may have opType ==
MO_VirtualRegister but if the register number is one of a physical
register is it considered as a physical register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11315 91177308-0d34-0410-b5e6-96231b3b80d8

Factor this code out of llvm-prof

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11314 91177308-0d34-0410-b5e6-96231b3b80d8

Remove obsolete comment.  Unreachable blocks will automatically be left at the
end of the function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11313 91177308-0d34-0410-b5e6-96231b3b80d8

Basic functionality testing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11312 91177308-0d34-0410-b5e6-96231b3b80d8

Add an _embarassingly simple_ implementation of basic block layout.  This is
more of a testcase for profiling information than anything that should reasonably
be used, but it's a starting point.  When I have more time I will whip this into
better shape.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11311 91177308-0d34-0410-b5e6-96231b3b80d8

Remove assert as it is meaningless. MachineOperands can be tagged as
MO_VirtualRegister but actually be representing a physical register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11310 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure to register the 'no profile' implementation as the default for ProfileInfo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11309 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify implementation, and probably speed things up too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11308 91177308-0d34-0410-b5e6-96231b3b80d8

Implement SimplifyCFG/PhiEliminate.ll

Having a proper 'select' instruction would allow the elimination of a lot
of the special case cruft in this patch, but we don't have one yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11307 91177308-0d34-0410-b5e6-96231b3b80d8

New feature testcase for simplifycfg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11306 91177308-0d34-0410-b5e6-96231b3b80d8

Initialize the count instance variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11305 91177308-0d34-0410-b5e6-96231b3b80d8

Expose the "Other" value type to tablegen targets

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11304 91177308-0d34-0410-b5e6-96231b3b80d8

Remove long obsolete method.  switch instructions are first class entities in the CFG, and have been for a LOOOONG time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11303 91177308-0d34-0410-b5e6-96231b3b80d8

Remove obsolete method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11302 91177308-0d34-0410-b5e6-96231b3b80d8

The hasConstantReferences predicate always returns false.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11301 91177308-0d34-0410-b5e6-96231b3b80d8

Updated to handle the new SPEC95 configuration options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11298 91177308-0d34-0410-b5e6-96231b3b80d8

Added support for configuring SPEC95.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11295 91177308-0d34-0410-b5e6-96231b3b80d8

An initial implementation of an LLVM ProfileInfo class which is designed to
eventually allow Passes to use profiling information to direct them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11294 91177308-0d34-0410-b5e6-96231b3b80d8

Sprinkle liberally with comments, saute with doxygen until readable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11293 91177308-0d34-0410-b5e6-96231b3b80d8

Doxygenify comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11292 91177308-0d34-0410-b5e6-96231b3b80d8

Urg, the X86 backend DOES use virtual register operands. :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11288 91177308-0d34-0410-b5e6-96231b3b80d8

Remove and simplify some of the bewildering collection of isFOORegister
methods which have strangely different semantics in different backends,
and noone knew what any did.

Getting rid of these ALSO allows the dependence of MachineInstr.h on
MRegisterInfo.h to be removed, which makes me much happier, and probably
alkis too.  :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11287 91177308-0d34-0410-b5e6-96231b3b80d8