Do not hack on volatile loads.  I'm not sure what the point of a volatile load
from constant memory is, but lets not take chances.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10765 91177308-0d34-0410-b5e6-96231b3b80d8

Implement SCCP/phitest.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10763 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase, allow folding of binary operators that use PHI nodes, as long
as the result of the binary operator is always constant.  This does not require
the PHI itself to be constant though.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10762 91177308-0d34-0410-b5e6-96231b3b80d8

Implement Transforms/ScalarRepl/phinodepromote.ll, which is an important
case that the C/C++ front-end generates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10761 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10760 91177308-0d34-0410-b5e6-96231b3b80d8

Implement: Assembler/2004-01-11-getelementptrfolding.llx

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10759 91177308-0d34-0410-b5e6-96231b3b80d8

This isn't really an assembler test.  This tests to make sure the
ConstantExpr::getGetElementPtr method folds two getelementptr instructions
when possible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10758 91177308-0d34-0410-b5e6-96231b3b80d8

Urg, remove testing code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10757 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a regression that I introduced yesterday.  :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10756 91177308-0d34-0410-b5e6-96231b3b80d8

Make LiveVariables::HandlePhysRegUse and
LiveVariables::HandlePhysRegDef private they use information that is
not in memory when LiveVariables finishes the analysis.

Also update the TwoAddressInstructionPass to not use this interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10755 91177308-0d34-0410-b5e6-96231b3b80d8

Check in two changes:
The first change (which is disabled) compactifies all of the function constant
pools into the global constant pool, in an attempt to reduce the amount of
duplication and overhead.  Unfortunately, as the comment indicates, this is
not yet a win, so it is disabled.

The second change sorts the typeid's so that those types that can be used
by instructions in the program appear earlier in the table than those that
cannot (such as structures and arrays).  This causes the instructions to
be able to use the dense encoding more often, saving about 5K on 254.gap.
This is only a .65% savings though, unfortunately. :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10754 91177308-0d34-0410-b5e6-96231b3b80d8

Hrm, another minor cleanup, which I missed before

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10753 91177308-0d34-0410-b5e6-96231b3b80d8

Minor cleanup

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10752 91177308-0d34-0410-b5e6-96231b3b80d8

Update obsolete comments
Fix iterator invalidation problems which was causing -mstrip to miss some
entries, and read free'd memory.  This shrinks the symbol table of 254.gap
from 333 to 284 bytes!  :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10751 91177308-0d34-0410-b5e6-96231b3b80d8

Do not bother to emit a BytecodeBlock for an empty symbol table.  This commonly
occurs when the symbol table for a module has been stripped, making all of the
function local symbols go away.

This saves 6728 bytes in the stripped bytecode file of 254.gap (which obviously
has 841 functions), which isn't a ton, but helps and was easy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10750 91177308-0d34-0410-b5e6-96231b3b80d8

Remove use of llvm/CodeGen/InstrSelection.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10749 91177308-0d34-0410-b5e6-96231b3b80d8

Remove standard C header wrappers

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10748 91177308-0d34-0410-b5e6-96231b3b80d8

Remove config wrapper around <cerrno>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10747 91177308-0d34-0410-b5e6-96231b3b80d8

Remove standard C file wrapper

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10746 91177308-0d34-0410-b5e6-96231b3b80d8

Remove wrapper for standard C file, use <cstdlib> instead

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10745 91177308-0d34-0410-b5e6-96231b3b80d8

Remove wrappers around std c files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10744 91177308-0d34-0410-b5e6-96231b3b80d8

Dead file, use <cstring> instead of this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10743 91177308-0d34-0410-b5e6-96231b3b80d8

Err, we don't need Config/*.h files for things that are standard C++

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10742 91177308-0d34-0410-b5e6-96231b3b80d8

minor comment tweaks

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10741 91177308-0d34-0410-b5e6-96231b3b80d8

remove obsolete file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10740 91177308-0d34-0410-b5e6-96231b3b80d8

* finegrainify namespacification of ArchiveReader.cpp
* Refactor reader stuff out of include/llvm/Bytecode/Primitives.h.  This is
  internal implementation details for the reader, not public interfaces!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10739 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor writer stuff out of include/llvm/Bytecode/Primitives.h.  This is
internal implementation details for the writer, not public interfaces!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10738 91177308-0d34-0410-b5e6-96231b3b80d8

Finegrainify namespacification

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10737 91177308-0d34-0410-b5e6-96231b3b80d8

Fix annoying warnings.  W doesn't have a revision number

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10736 91177308-0d34-0410-b5e6-96231b3b80d8

Live var is now in lib/Target/Sparc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10735 91177308-0d34-0410-b5e6-96231b3b80d8

Move sparc-specific code into lib/Target/Sparc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10734 91177308-0d34-0410-b5e6-96231b3b80d8

Move sparc-specific livevar code into lib/Target/Sparc

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10733 91177308-0d34-0410-b5e6-96231b3b80d8

Fix more incestuous #includage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10732 91177308-0d34-0410-b5e6-96231b3b80d8

Finegrainify namespacification.
This should get hunked over to the Sparc backend, along with
MachineCodeForInstruction and a bunch of files in include/llvm/Codegen,
but those battles will have to wait for a later time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10731 91177308-0d34-0410-b5e6-96231b3b80d8

Move InstrSelection into lib/Target/Sparc, as it's sparc specific

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10730 91177308-0d34-0410-b5e6-96231b3b80d8

Move InstrSelection into lib/Target/Sparc, as it's sparc specific.  This
makes the incestuous #include'ing of sparc internal headers much less
disturbing.  :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10729 91177308-0d34-0410-b5e6-96231b3b80d8

Move lib/Codegen/RegAlloc into lib/Target/Sparc, as it is sparc specific

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10728 91177308-0d34-0410-b5e6-96231b3b80d8

Finegrainify namespacification

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10727 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dependence on structure index type.  s/MT/FT

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10726 91177308-0d34-0410-b5e6-96231b3b80d8

Finegrainify namespacification

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10725 91177308-0d34-0410-b5e6-96231b3b80d8

Finegrainify namespacification
add flags for PR82

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10724 91177308-0d34-0410-b5e6-96231b3b80d8

Remove an obsolete method, including its _long_ out of date comment.
This is an incremental step towards fixing PR82

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10723 91177308-0d34-0410-b5e6-96231b3b80d8

Inching towards fixing PR82

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10722 91177308-0d34-0410-b5e6-96231b3b80d8

Inching our way towards fixing PR82

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10721 91177308-0d34-0410-b5e6-96231b3b80d8

Remove yet another obsolete comment :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10720 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typos. Rewrite head-of-file comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10719 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typos. Regularize include guard.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10718 91177308-0d34-0410-b5e6-96231b3b80d8

New bugs fixed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10716 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase for PR202

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10715 91177308-0d34-0410-b5e6-96231b3b80d8

Improve encapsulation in the Loop and LoopInfo classes by eliminating the
getSubLoops/getTopLevelLoops methods, replacing them with iterator-based
accessors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10714 91177308-0d34-0410-b5e6-96231b3b80d8

explain the jump for llvm-db

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10713 91177308-0d34-0410-b5e6-96231b3b80d8

Add a separate list of fixed intervals. This improves the running time
of the register allocator as follows:

       before   after
mesa   2.3790  1.5994
vpr    2.6008  1.2078
gcc    1.9840  0.5273
mcf    0.2569  0.0470
eon    1.8468  1.4359
twolf  0.9475  0.2004
burg   1.6807  1.3300
lambda 1.2191  0.3764

Speedups range anyware from 30% to over 400% :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10712 91177308-0d34-0410-b5e6-96231b3b80d8

Minor cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10711 91177308-0d34-0410-b5e6-96231b3b80d8

Remove declared but undefined method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10710 91177308-0d34-0410-b5e6-96231b3b80d8

Change perl interpreter path to the standard /usr/bin/perl.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10708 91177308-0d34-0410-b5e6-96231b3b80d8

Change implementation of LiveIntervals::overlap(). This results in a
30-50% decrease in running time of the linear scan register allocator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10707 91177308-0d34-0410-b5e6-96231b3b80d8

Ugh, fix some copy and pasted code that somehow never got compiled or something
:(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10706 91177308-0d34-0410-b5e6-96231b3b80d8

Pass std::string to constructor as const reference to avoid multiple
copies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10705 91177308-0d34-0410-b5e6-96231b3b80d8

restore comments to this file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10704 91177308-0d34-0410-b5e6-96231b3b80d8

* Implement set/show args
* Implement support for arguments to the 'run' command
* Minor cleanups and fixes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10703 91177308-0d34-0410-b5e6-96231b3b80d8

implement the "null command" which repeats the last command

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10702 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for new intrinsic

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10701 91177308-0d34-0410-b5e6-96231b3b80d8

add new intrinsic

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10700 91177308-0d34-0410-b5e6-96231b3b80d8

add new method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10699 91177308-0d34-0410-b5e6-96231b3b80d8

Add links to SLD from the LangRef.html doc
Clean up the SLD document a LOT
Fill in a lot of details in the SLD document
update the formats for the object descriptors

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10698 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some typos and copy-and-paste-os in comments, and doxygenify.
Add <csignal> so that this file compiles on Solaris.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10697 91177308-0d34-0410-b5e6-96231b3b80d8

Remove simple coalescing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10695 91177308-0d34-0410-b5e6-96231b3b80d8

/me slaps head

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10694 91177308-0d34-0410-b5e6-96231b3b80d8

/me slaps forehead

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10693 91177308-0d34-0410-b5e6-96231b3b80d8

fix warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10692 91177308-0d34-0410-b5e6-96231b3b80d8

Add VMCore and code generator support for debugging intrinsics.  By default
code generators completely ignore them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10691 91177308-0d34-0410-b5e6-96231b3b80d8

Add some intrinsics

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10690 91177308-0d34-0410-b5e6-96231b3b80d8

An example testcase for use in the debugger.  Currently you can do stuff like
stepping, next'ing, finish'ing, stacktraces, source listings, etc.  You can't
print program variables yet though.

Oh, and I lost my nice commented version of funccall.ll  :(

Test with:
llvm-as funccall.ll
llvm-db funccall.bc
<arguments>

This is not automatically testable yet, and the C front-end doesn't support
debug information yet.  That said, it's a start.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10689 91177308-0d34-0410-b5e6-96231b3b80d8

Add new directory

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10688 91177308-0d34-0410-b5e6-96231b3b80d8

Initial checkin of the LLVM Source-Level Debugger.  This is incomplete, but
a good start.  The status is documented in docs/SourceLevelDebugging.html

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10687 91177308-0d34-0410-b5e6-96231b3b80d8

Add new dir

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10686 91177308-0d34-0410-b5e6-96231b3b80d8

Initial checkin of the LLVM source-level debugger.  This is still not finished,
by any stretch of the imagination, but it is pretty cool and works :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10685 91177308-0d34-0410-b5e6-96231b3b80d8

Initial implementation of some source-level debugging stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10684 91177308-0d34-0410-b5e6-96231b3b80d8

First version of this document.  It is still missing some pretty big pieces, and
the debugging information formats will likely change, but it's a start, and I
have to move on to other things in the short-term, so it might be a while before
I get back to working on this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10683 91177308-0d34-0410-b5e6-96231b3b80d8

Currently we cannot handle two-address instructions of the form:
A = B op C where A == C, but this cannot really occur in practice
because of SSA form. Add an assert to check that just to be safe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10682 91177308-0d34-0410-b5e6-96231b3b80d8

Update description.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10681 91177308-0d34-0410-b5e6-96231b3b80d8

Regression test for initializers with members of unknown size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10678 91177308-0d34-0410-b5e6-96231b3b80d8

Not all platforms supports sighandler_t, so I changed it to use the older
return value from signal() (which should be the same type; it's just not
typedef'd).
This fixes the build on Solaris.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10675 91177308-0d34-0410-b5e6-96231b3b80d8

Add new ExecutionEngine::getGlobalValueAtAddress method, which can efficiently
turn a memory address back into the LLVM global object that starts at that
address.  Note that this won't cause any additional datastructures to be built
for clients of the EE that don't need this information.

Also modified some code to not access the GlobalAddress map directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10674 91177308-0d34-0410-b5e6-96231b3b80d8

Add new ExecutionEngine::getGlobalValueAtAddress method, which can efficiently
turn a memory address back into the LLVM global object that starts at that
address.  Note that this won't cause any additional datastructures to be built
for clients of the EE that don't need this information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10673 91177308-0d34-0410-b5e6-96231b3b80d8

* Add a new helper progress method
* Make sure that the user sees the 100% mark
* Don't bother printing out X.0%, just print out X%

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10672 91177308-0d34-0410-b5e6-96231b3b80d8

Add some comments, add new getGlobalVariable method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10671 91177308-0d34-0410-b5e6-96231b3b80d8

Add some comments, add a new getGlobalVariable method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10670 91177308-0d34-0410-b5e6-96231b3b80d8

Add missing #include

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10669 91177308-0d34-0410-b5e6-96231b3b80d8

* Make Module::getTypeName const
* Add new Module::getTypeByName method
* Group methods in Module.cpp better

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10668 91177308-0d34-0410-b5e6-96231b3b80d8

Make the lookup method const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10667 91177308-0d34-0410-b5e6-96231b3b80d8

Add a bunch of fine tunings that Reid contributed.  Thanks Reid!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10666 91177308-0d34-0410-b5e6-96231b3b80d8

add new function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10665 91177308-0d34-0410-b5e6-96231b3b80d8

Add new function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10664 91177308-0d34-0410-b5e6-96231b3b80d8

clarify comments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10663 91177308-0d34-0410-b5e6-96231b3b80d8

New class, useful for command-line interactive programs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10662 91177308-0d34-0410-b5e6-96231b3b80d8

doxygenify

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10661 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for PR198

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10660 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR198

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10659 91177308-0d34-0410-b5e6-96231b3b80d8

Add comments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10658 91177308-0d34-0410-b5e6-96231b3b80d8