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

Fix grammar-o.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11210 91177308-0d34-0410-b5e6-96231b3b80d8

All of spec, including 253.perlbmk should now work.  There is still the 254.gap
regression, but that will definitely be fixed by 1.2

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11209 91177308-0d34-0410-b5e6-96231b3b80d8

Improve compatibility with programs that already have a prototype for 'write',
even if it is wierd in some way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11207 91177308-0d34-0410-b5e6-96231b3b80d8

vi failed me again.  :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11206 91177308-0d34-0410-b5e6-96231b3b80d8

Rename the invoke 'except' destination to the 'unwind' destination

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11205 91177308-0d34-0410-b5e6-96231b3b80d8

Change the 'exception' destination to the 'unwind' destination.  We will always
allow 'except' instead of 'unwind' here though.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11203 91177308-0d34-0410-b5e6-96231b3b80d8

rename the "exceptional" destination of an invoke instruction to the 'unwind' dest

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11202 91177308-0d34-0410-b5e6-96231b3b80d8

Add new bug, add note about llvm-db

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11201 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR225: [pruneeh] -pruneeh pass removes invoke instructions it shouldn't

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11200 91177308-0d34-0410-b5e6-96231b3b80d8

splitBasicBlock "does the right thing" now, no reason to reposition it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11199 91177308-0d34-0410-b5e6-96231b3b80d8

Bug fixed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11198 91177308-0d34-0410-b5e6-96231b3b80d8

Implement proper invoke/unwind lowering.
This fixed PR16 "[lowerinvoke] The -lowerinvoke pass does not insert calls to setjmp/longjmp"

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11195 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase, code generators should support invoke/unwind

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11192 91177308-0d34-0410-b5e6-96231b3b80d8

Print out all globals as they are emitted, not just those emitted from
emitGlobals

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11191 91177308-0d34-0410-b5e6-96231b3b80d8

There is no reason to #define fd

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11190 91177308-0d34-0410-b5e6-96231b3b80d8

add pr105

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11189 91177308-0d34-0410-b5e6-96231b3b80d8

Fix unterminated-quote typo in echo command

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11188 91177308-0d34-0410-b5e6-96231b3b80d8

Document automake as a build dependency because we use aclocal

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11187 91177308-0d34-0410-b5e6-96231b3b80d8

Move rules for regenerating autoconf files into this shell script.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11186 91177308-0d34-0410-b5e6-96231b3b80d8

Remove rules for autoconf'ing files from top-level Makefile

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11185 91177308-0d34-0410-b5e6-96231b3b80d8

Add a call to 'write' right before the call to abort() in the unwind path.
This causes the JIT, or LLC'd program to print out a nice message, explaining
WHY the program aborted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11184 91177308-0d34-0410-b5e6-96231b3b80d8

Fix indentation of selectiondag.

I don't know why its indentation has been bugging me, but it has.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11180 91177308-0d34-0410-b5e6-96231b3b80d8

Add one that I missed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11179 91177308-0d34-0410-b5e6-96231b3b80d8

Instead of callign removeTriviallyDeadNodes on the global graph every time
removeDeadNodes is called, only call it at the end of the pass being run.
This saves 1.3 seconds running DSA on 177.mesa (5.3->4.0s), which is
pretty big.  This is only possible because of the automatic garbage
collection done on forwarding nodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11178 91177308-0d34-0410-b5e6-96231b3b80d8

Remove another unneeded call.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11177 91177308-0d34-0410-b5e6-96231b3b80d8

This call is no longer needed now that merging does not produce garbage

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11176 91177308-0d34-0410-b5e6-96231b3b80d8

Substantially improve the DSA code by removing 'forwarding' nodes from
DSGraphs while they are forwarding.  When the last reference to the forwarding
node is dropped, the forwarding node is autodeleted.  This should simplify
removeTriviallyDead nodes, and is only (efficiently) possible because we are
using an ilist of dsnodes now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11175 91177308-0d34-0410-b5e6-96231b3b80d8

Bugfix for ilist conversion.  The ilist wants to make an 'end' node which has
G == 0

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11174 91177308-0d34-0410-b5e6-96231b3b80d8

Switch the Nodes list from being an std::vector<DSNode*> to an ilist<DSNode>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11173 91177308-0d34-0410-b5e6-96231b3b80d8

One of the 'annoying' things about ilists is that the iterators don't behave
quite the same as for non-intrusive lists of pointers to nodes.  To support
transitioning code bases, add a new 'compatibility' iterator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11172 91177308-0d34-0410-b5e6-96231b3b80d8

Change to use node_iterators instead of direct access to Nodes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11171 91177308-0d34-0410-b5e6-96231b3b80d8

Change to use iterators instead of direct access

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11170 91177308-0d34-0410-b5e6-96231b3b80d8

Minor change to breakpoint (lack of) support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11169 91177308-0d34-0410-b5e6-96231b3b80d8

getNodes() is gone, use node_begin/end instead
Rename stats from dsnode -> dsa
Add a new stat

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11167 91177308-0d34-0410-b5e6-96231b3b80d8