use a 'register pressure reducing' scheduler
make sure only one move is used in a hello world

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29520 91177308-0d34-0410-b5e6-96231b3b80d8

Bug fix: always generate a RET_FLAG in LowerRET
fixes ret_null.ll and call.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29519 91177308-0d34-0410-b5e6-96231b3b80d8

updated CVS server location

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29518 91177308-0d34-0410-b5e6-96231b3b80d8

For PR845:
Enable the makefile check on the result of find-cycles.pl. LLVM is now
cycle free and we intend to keep it that way. This patch will fail the
build if cycles are found.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29517 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typo in the name of expand_dependencies.
Make the dependency line pattern match handle white space better.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29516 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR867 (and maybe 868) and testcsae:
Transforms/SimplifyCFG/2006-08-03-Crash.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29515 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase for pr867

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29514 91177308-0d34-0410-b5e6-96231b3b80d8

Applying for all.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29512 91177308-0d34-0410-b5e6-96231b3b80d8

Copy the liveins for the first block.  PR859

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29511 91177308-0d34-0410-b5e6-96231b3b80d8

Make all the schedulers continue to work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29510 91177308-0d34-0410-b5e6-96231b3b80d8

Print an error message if the lib directory (first argument) is not a
directory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29508 91177308-0d34-0410-b5e6-96231b3b80d8

update comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29507 91177308-0d34-0410-b5e6-96231b3b80d8

remove some more dead sparcv9 support stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29506 91177308-0d34-0410-b5e6-96231b3b80d8

remove a dead proto

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29505 91177308-0d34-0410-b5e6-96231b3b80d8

Get darwin intel debugging up and running.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29504 91177308-0d34-0410-b5e6-96231b3b80d8

Make it fit into 80-columns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29503 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29502 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify. Use addprefix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29501 91177308-0d34-0410-b5e6-96231b3b80d8

add and use ARMISD::RET_FLAG

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29499 91177308-0d34-0410-b5e6-96231b3b80d8

Now that SparcV9 is gone, this logical can be simplified significantly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29498 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29497 91177308-0d34-0410-b5e6-96231b3b80d8

One of the directories we were searching in for .o and .a files was wrong. We now search /lib instead of /libs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29496 91177308-0d34-0410-b5e6-96231b3b80d8

Remove ARM for the moment since it is a work in progress.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29495 91177308-0d34-0410-b5e6-96231b3b80d8

Add new tool, lto, to do link time optimization. This tool installs
dynamic library that linker can use to optimize llvm byte codes at
link time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29494 91177308-0d34-0410-b5e6-96231b3b80d8

Changes:
  1. Update an obsolete comment.
  2. Make the sorting by base an explicit (though still N^2) step, so
     that the code is more clear on what it is doing.
  3. Partition uses so that uses inside the loop are handled before uses
     outside the loop.

Note that none of these changes currently changes the code inserted by LSR,
but they are a stepping stone to getting there.

This code is the result of some crazy pair programming with Nate. :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29493 91177308-0d34-0410-b5e6-96231b3b80d8

Remove some extraneous newlines.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29492 91177308-0d34-0410-b5e6-96231b3b80d8

Really add support for compilers without noinline

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29491 91177308-0d34-0410-b5e6-96231b3b80d8

Work around a GCC 3.3.5 bug noticed by a user.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29490 91177308-0d34-0410-b5e6-96231b3b80d8

Work around a bug in gcc 3.3.5, reported by a user

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29489 91177308-0d34-0410-b5e6-96231b3b80d8

We now only search the following directories for .o and .a files:
utils/
libs/
tools/
Release/ & Debug/
as per Chris.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29488 91177308-0d34-0410-b5e6-96231b3b80d8

Reflect change to AssignTopologicalOrder().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29480 91177308-0d34-0410-b5e6-96231b3b80d8

- Change AssignTopologicalOrder to return vector of SDNode* by reference.
- Tweak implementation to avoid using std::map.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29479 91177308-0d34-0410-b5e6-96231b3b80d8

AssignTopologicalOrder now returns the vector of SDNode* by reference to
avoid the expensive operation of copying a vector.
It also returns a maximum id by value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29478 91177308-0d34-0410-b5e6-96231b3b80d8

If the Program name was NULL then all further output sent to std::cerr was
suppressed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29477 91177308-0d34-0410-b5e6-96231b3b80d8

Removed some dead code and hopefully fixed the issue where the total list of tests was not being sent

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29476 91177308-0d34-0410-b5e6-96231b3b80d8

Final polish on machine pass registries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29471 91177308-0d34-0410-b5e6-96231b3b80d8

Breaking out specialized classes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29470 91177308-0d34-0410-b5e6-96231b3b80d8

Use of vector<bool> causes some horrendous compile time regression (2x)!
Looks like libstdc++ implementation does not scale very well. Switch back
to using directly managed arrays.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29469 91177308-0d34-0410-b5e6-96231b3b80d8

Update the readme to remove duplicate information and clarify the loop
problem.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29468 91177308-0d34-0410-b5e6-96231b3b80d8

Disable LSR at -fast

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29467 91177308-0d34-0410-b5e6-96231b3b80d8

Add special check to avoid isLoop call.  Simple, but doesn't seem to speed
up lcssa much in practice.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29465 91177308-0d34-0410-b5e6-96231b3b80d8

Speed up Loop::isLCSSAForm by using a binary search and single-entry cache.

This reduces LCSSA pass time from 1.5s to 0.96s when run on eon in release+asserts mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29464 91177308-0d34-0410-b5e6-96231b3b80d8

Replace the SSA update code in LCSSA with a bottom-up approach instead of a top
down approach, inspired by discussions with Tanya.

This approach is significantly faster, because it does not need dominator
frontiers and it does not insert extraneous unused PHI nodes.  For example, on
252.eon, in a release-asserts build, this speeds up LCSSA (which is the slowest
pass in gccas) from 9.14s to 0.74s on my G5.  This code is also slightly smaller
and significantly simpler than the old code.

Amusingly, in a normal Release build (which includes the
"assert(L->isLCSSAForm());" assertion), asserting that the result of LCSSA
is in LCSSA form is actually slower than the LCSSA transformation pass
itself on 252.eon.  I will see if Loop::isLCSSAForm can be sped up next.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29463 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the build on case-sensitive filesystems :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29457 91177308-0d34-0410-b5e6-96231b3b80d8

Add dominates/properlyDominates queries to IDom.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29456 91177308-0d34-0410-b5e6-96231b3b80d8

Now that the ISel is available, it's possible to create a default instruction
scheduler creator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29452 91177308-0d34-0410-b5e6-96231b3b80d8

start comments with #
move the constant pool to .text
correctly print loads of labels
mark R0, R1, R2 and R3 as caller save

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29451 91177308-0d34-0410-b5e6-96231b3b80d8

1. Change use of "Cache" to "Default".
2. Added argument to instruction scheduler creators so the creators can do
special things.
3. Repaired target hazard code.
4. Misc.

More to follow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29450 91177308-0d34-0410-b5e6-96231b3b80d8

no need to check readability here

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29449 91177308-0d34-0410-b5e6-96231b3b80d8

Remove some now-dead methods.  Use getFileStatus instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29447 91177308-0d34-0410-b5e6-96231b3b80d8

No need to check isWriteable here (which isn't sufficient anyway).  Just attempt
to do the operation and if it fails, oh well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29446 91177308-0d34-0410-b5e6-96231b3b80d8

Use Path::getFileStatus

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29445 91177308-0d34-0410-b5e6-96231b3b80d8

Use Path::getFileStatus to get status-related info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29444 91177308-0d34-0410-b5e6-96231b3b80d8

Use getFileStatus instead of Path::isDirectory().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29443 91177308-0d34-0410-b5e6-96231b3b80d8

elimiante some syscalls

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29442 91177308-0d34-0410-b5e6-96231b3b80d8

Update my entry.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29438 91177308-0d34-0410-b5e6-96231b3b80d8

Update Bil's entry

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29437 91177308-0d34-0410-b5e6-96231b3b80d8

Forgot the added files for plugable machine passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29436 91177308-0d34-0410-b5e6-96231b3b80d8

Fix HTML 4.01 Strict errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29435 91177308-0d34-0410-b5e6-96231b3b80d8

Introducing plugable register allocators and instruction schedulers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29434 91177308-0d34-0410-b5e6-96231b3b80d8

implement LowerConstantPool and LowerGlobalAddress

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29433 91177308-0d34-0410-b5e6-96231b3b80d8

Adding to credibility.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29432 91177308-0d34-0410-b5e6-96231b3b80d8

Added AssignTopologicalOrder() to assign each node an unique id based on their topological order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29431 91177308-0d34-0410-b5e6-96231b3b80d8

Factor topological order code to SelectionDAG. Clean up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29430 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a problem with use of undefined variables. Print an error message if
the first argument is omitted. Attempt to use a standard/default font.
Make the generation of the DOT file readable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29429 91177308-0d34-0410-b5e6-96231b3b80d8

Minor fix due to recent API changes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29428 91177308-0d34-0410-b5e6-96231b3b80d8

Update to include new options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29426 91177308-0d34-0410-b5e6-96231b3b80d8

Update library dependency information, describe new libraries, talk a
little about llvm-config as a source for help with library dependencies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29425 91177308-0d34-0410-b5e6-96231b3b80d8

Added myself to credits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29424 91177308-0d34-0410-b5e6-96231b3b80d8

Pass N by reference to select functions to prevent gcc from allocating more stack.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29423 91177308-0d34-0410-b5e6-96231b3b80d8

PIC jump table entries are always 32-bit even in 64-bit mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29422 91177308-0d34-0410-b5e6-96231b3b80d8

If dejagnu is not found, tell the user instead of bombing out with an
obscure error.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29421 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR850 and CodeGen/X86/2006-07-31-SingleRegClass.ll.

The CFE refers to all single-register constraints (like "A") by their 16-bit
name, even though the 8 or 32-bit version of the register may be needed.
The X86 backend should realize what is going on and redecode the name back
to its proper form.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29420 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase for PR850.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29419 91177308-0d34-0410-b5e6-96231b3b80d8

Changed to a new directory for opensource checkout.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29418 91177308-0d34-0410-b5e6-96231b3b80d8

handle GlobalValue::InternalLinkage in doFinalization

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29417 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a couple typos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29416 91177308-0d34-0410-b5e6-96231b3b80d8

Remove an unneeded match condition: the type check for root node has been
moved to outside the actual select routine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29415 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a duplicate pattern.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29414 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a duplicate pattern/

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29413 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for PR854.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29412 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase for GCC bug28417, ensuring that we don't start getting it wrong
somehow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29410 91177308-0d34-0410-b5e6-96231b3b80d8

fix externals

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29409 91177308-0d34-0410-b5e6-96231b3b80d8

Instead of blindly looking past constantexpr casts, actually constant
fold them.  This correctly truncates constants that are too large for the
destination slot and makes the code easier to understand.  This fixes PR853
and Regression/CodeGen/X86/2006-07-28-AsmPrint-Long-As-Pointer.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29408 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase for PR853

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29407 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a redundant syscall.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29405 91177308-0d34-0410-b5e6-96231b3b80d8

Split each select function for a particular opcode into multiple ones. One
per possible ValueType of the node. e.g. Select_add is split into Select_add_i8,
Select_add_i16, etc.

For opcodes which do not produce a non-chain result, it is split on the
ValueType of its first non-chain operand. e.g. Select_store.

On X86 / Mac OS X, Select_store used to be the largest function. It had a stack
frame size of 8.5k. Now the largest one is Store_i32 with a frame size of 3.1k.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29404 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the --with-extra-options to use the correct variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29403 91177308-0d34-0410-b5e6-96231b3b80d8

Modify setStatusInfoOnDisk to not throw an exception.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29402 91177308-0d34-0410-b5e6-96231b3b80d8

Update win32 for Path::getStatusInfo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29401 91177308-0d34-0410-b5e6-96231b3b80d8

Modify Path::eraseFromDisk to not throw an exception.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29400 91177308-0d34-0410-b5e6-96231b3b80d8

Finegrainify namespacification, minor cleanups

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29399 91177308-0d34-0410-b5e6-96231b3b80d8

Update comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29398 91177308-0d34-0410-b5e6-96231b3b80d8

WriteBytecodeToFile actually can't throw.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29397 91177308-0d34-0410-b5e6-96231b3b80d8

formatting cleanups

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29396 91177308-0d34-0410-b5e6-96231b3b80d8

Change Path::getStatusInfo to return a boolean and error string on an error
instead of throwing an exception.  This reduces the amount of code that is
exposed to exceptions (e.g. FileUtilities), though it is clearly only one step
along the way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29395 91177308-0d34-0410-b5e6-96231b3b80d8

libsupport still throws.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29394 91177308-0d34-0410-b5e6-96231b3b80d8

Exceptions are thrown by and through this library.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29393 91177308-0d34-0410-b5e6-96231b3b80d8

WriteBytecodeToFile throws, so this needs EH info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29392 91177308-0d34-0410-b5e6-96231b3b80d8

Fix handling of asm specifiers for external globals. This unbreaks many programs
on leopard in the jit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29391 91177308-0d34-0410-b5e6-96231b3b80d8