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

Remove some unneeded stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11286 91177308-0d34-0410-b5e6-96231b3b80d8

Add #include

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11285 91177308-0d34-0410-b5e6-96231b3b80d8

Do not use MachineOperand::isVirtualRegister either!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11283 91177308-0d34-0410-b5e6-96231b3b80d8

Stop using this method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11282 91177308-0d34-0410-b5e6-96231b3b80d8

Remove uses of MachineOperand::isVirtualRegister

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11281 91177308-0d34-0410-b5e6-96231b3b80d8

Remvoe use of MO.isVirtualRegister(), turn an assertion into an assert()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11280 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate MachineOperand::isPhysicalRegister.  The X86 backend should use
MRegisterInfo::isPhysicalRegister(MO.getReg()) and the Sparc backend should
use isMachineRegister()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11279 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate users of MachineOperand::isPhysicalRegister

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11278 91177308-0d34-0410-b5e6-96231b3b80d8

Remove use of isPhysicalRegister

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11277 91177308-0d34-0410-b5e6-96231b3b80d8

Don't use MachineOperator::is(Phys|Virt)Register

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11276 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify condition, this does not change the predicate at all though

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11275 91177308-0d34-0410-b5e6-96231b3b80d8

Tighten up checks

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11274 91177308-0d34-0410-b5e6-96231b3b80d8

Right, define the LPROF variable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11273 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure to copy the null terminator at the end of the argv list.  Some
programs use it instead of argc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11270 91177308-0d34-0410-b5e6-96231b3b80d8

* Added class comments
* Doxygenified existing comments
* Compactified code to be more consistent

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11268 91177308-0d34-0410-b5e6-96231b3b80d8

Fix documentation bugs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11267 91177308-0d34-0410-b5e6-96231b3b80d8

Make block profiling the default
add a new -function argument
Add a new -o argument to specify where to put llvmprof.out data

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11265 91177308-0d34-0410-b5e6-96231b3b80d8

Allow the program to take a '-llvmprof-output filename' option to specify
where to output the profiling data, if llvmprof.out is not good enough.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11264 91177308-0d34-0410-b5e6-96231b3b80d8

initialization calls now return argc.  If the program uses the argc value
passed into main, make sure they use the return value of the init call
instead of the one passed in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11262 91177308-0d34-0410-b5e6-96231b3b80d8

Make the initialization calls return argc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11261 91177308-0d34-0410-b5e6-96231b3b80d8

Doxygen-ify comments, make function prototypes more consistent in format.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11259 91177308-0d34-0410-b5e6-96231b3b80d8

Mention install, RPM, autoconf improvements

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11257 91177308-0d34-0410-b5e6-96231b3b80d8

Bug fixed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11256 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR228: [sparc] Boolean constants are emitted as true and false

I will observe that the concept of using WriteAsOperand is completely broken,
but then we all knew that, didn't we?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11255 91177308-0d34-0410-b5e6-96231b3b80d8

RPM spec file for LLVM tools and libraries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11254 91177308-0d34-0410-b5e6-96231b3b80d8

Should fix pr220  - "make install" doesn't install header files when
BUILD_SRC_ROOT != BUILD_OBJ_ROOT

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11253 91177308-0d34-0410-b5e6-96231b3b80d8

Doxygenify comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11252 91177308-0d34-0410-b5e6-96231b3b80d8

Move this testcase out of /home/vadve/lattner/cvs/llvm/test/Programs/LLVMSource,
as it fails.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11250 91177308-0d34-0410-b5e6-96231b3b80d8

Only add the global variable with the abort message if an unwind actually
occurs in the program.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11249 91177308-0d34-0410-b5e6-96231b3b80d8

Add global methods that prevent us from using ilist::iterators as
random access iterators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11248 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR#226: When emitting padding, always emit it as bytes.  Bytes can be
placed into any alignment situation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11247 91177308-0d34-0410-b5e6-96231b3b80d8

Many things have been fixed, so move them out of the "known problems" section
Also, PR137 is a code quality PR, not a bug

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11246 91177308-0d34-0410-b5e6-96231b3b80d8

QOI bug fixed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11245 91177308-0d34-0410-b5e6-96231b3b80d8

It turns out that the two dimensional vectors were causing big slowdowns
in this for programs with lots of types (like the testcase in PR224).
The problem was that the type ID that the outer vector was using was not
very dense (as many types are getting resolved), so the vector is large
and gets reallocated a lot.

Since there are a lot of values in the program (the .ll file is 10M),
each reallocation has to copy the subvectors, which is also quite slow
(this wouldn't be a problem if C++ supported move semantics, but it
doesn't, at least not yet :(

Changing the outer data structure to a map speeds a release build of
llvm-as up from 11.21s to 5.13s on the testcase in PR224.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11244 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the statistics

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11243 91177308-0d34-0410-b5e6-96231b3b80d8

Speed up type resolution some more.  On the testcase in PR224, for example,
this speeds up a release llvm-as from 21.95s to 11.21s, because before it
would do an expensive traversal of the type-graph of every type resolved.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11242 91177308-0d34-0410-b5e6-96231b3b80d8

When resolving upreferences, if multiple uprefs will be resolved to the same
type at the same time, resolve the upreferences to each other before resolving
it to the outer type.  This shaves off some time from the testcase in PR224, from
25.41s -> 21.72s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11241 91177308-0d34-0410-b5e6-96231b3b80d8

SchedGraph doesn't need to be friends with SchedGraphNodeCommon anymore.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11240 91177308-0d34-0410-b5e6-96231b3b80d8

Move InstrSchedule's iterator begin/end methods inline.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11239 91177308-0d34-0410-b5e6-96231b3b80d8

Make SchedGraph::dump() use SchedGraphNodeCommon's const_iterator
instead of randomly groping about inside its outEdges array.
Make SchedGraph::addDummyEdges() use getNumOutEdges() instead of
outEdges.size().
Get rid of ifdefed-out code in SchedGraph::buildGraph().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11238 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the hashing scheme in an attempt to speed up the "slow" case in
type resolution.  Unfortunately it doesn't help.

Also delete some dead debugging code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11237 91177308-0d34-0410-b5e6-96231b3b80d8

Fix bug in installation process: MKDIR must respect DESTDIR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11236 91177308-0d34-0410-b5e6-96231b3b80d8

This debugging hook is no longer needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11233 91177308-0d34-0410-b5e6-96231b3b80d8

Code cleanup in preparation for later changes.  Now that ContainedTy's are
consistent across the various type classes, we can factor out a LOT more
almost-identical code.  Also, add a couple of temporary statistics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11232 91177308-0d34-0410-b5e6-96231b3b80d8

Now that all of the derived types have disciplined interfaces, we can eliminate
all of the ad-hoc storage of contained types.  This allows getContainedType to
not be virtual, and allows us to entirely delete the TypeIterator class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11230 91177308-0d34-0410-b5e6-96231b3b80d8

Don't depend on auto data conversion

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11229 91177308-0d34-0410-b5e6-96231b3b80d8

Adjust to the changed StructType interface.  In particular, getElementTypes() is gone.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11228 91177308-0d34-0410-b5e6-96231b3b80d8

Increase encapsulation of the StructType class, eliminating the getElementTypes() member

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11227 91177308-0d34-0410-b5e6-96231b3b80d8

Method is gone

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11226 91177308-0d34-0410-b5e6-96231b3b80d8

Start using the new and improve interface to FunctionType arguments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11224 91177308-0d34-0410-b5e6-96231b3b80d8

Improve encapsulation in the FunctionType class, by adding param_(iterator/begin/end)
members, and eliminating the getParamTypes() method, and the associated typedef.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11223 91177308-0d34-0410-b5e6-96231b3b80d8

This #include is not needed, it should have been removed with the last patch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11222 91177308-0d34-0410-b5e6-96231b3b80d8

Instead of searching the entire type graph for a type to determine if it
contains the type we are looking for, just search the immediately used types.
We can only do this because we keep the "current" type in the nesting level
as we decrement upreferences.

This change speeds up the testcase in PR224 from 50.4s to 22.08s, not
too shabby.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11221 91177308-0d34-0410-b5e6-96231b3b80d8

Upreferences are always OpaqueTypes, meaning that it is impossible for a non-abstract
type from containing one.  This speeds up the asmparser on the testcase in PR224 from
61->50s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11220 91177308-0d34-0410-b5e6-96231b3b80d8

Another nice speedup for the register allocator.  This time, we replace
the Virt2PhysRegMap std::map with an std::vector.  This speeds up the
register allocator another (almost) 40%, from .72->.45s in a release build
of LLC on 253.perlbmk.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11219 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new (hidden) option that is useful for profiling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11218 91177308-0d34-0410-b5e6-96231b3b80d8

Ugh, perform an optimization that GCC should be able to do itself.  This
speeds up livevar from .48/.32s -> .45/.31s in LLC on perlbmk

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11217 91177308-0d34-0410-b5e6-96231b3b80d8

Only do stuff for the REAL number of physical registers we have, not 1024.
This speeds up live variables a lot, from .60/.39s -> .47/.26s in LLC, for
the first/second pass respectively.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11216 91177308-0d34-0410-b5e6-96231b3b80d8

Change the PhysRegsUsed map into a dense array.  Seeing that this is a mapping
from physical registers, and they are always dense, it makes sense to not have
a ton of RBtree overhead.  This change speeds up regalloclocal about ~30% on
253.perlbmk, from .35s -> .27s in the JIT (in LLC, it goes from .74 -> .55).

Now live variable analysis is the slowest codegen pass.  Of course it doesn't
help that we have to run it twice, because regalloclocal doesn't update it,
but even if it did it would be the slowest pass (now it's just the 2x slowest
pass :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11215 91177308-0d34-0410-b5e6-96231b3b80d8

Two problems with these lines of code:
 1. The "work" was not in the assert, so it was punishing the optimized release
 2. getNamedFunction is _very_ expensive in large programs.  It is not designed
    to be used like this, and was taking 7% of the execution time of the code
    generator on perlbmk.

Since the assert "can never fail", I'm just killing it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11214 91177308-0d34-0410-b5e6-96231b3b80d8

The ConstantExpr::getCast call can cause a CPR to be generated.  If so,
strip it off.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11213 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR215: [bcwriter] Problem compactifying ConstantPointerRefs

Have I ever mentioned how much I _hate_ constantpointerrefs?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11212 91177308-0d34-0410-b5e6-96231b3b80d8