add a simplified accessor for creating an fp constant of a
particular value but variable type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49416 91177308-0d34-0410-b5e6-96231b3b80d8

Missed a hasInterval check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49415 91177308-0d34-0410-b5e6-96231b3b80d8

add a version of ConstantFP::get that doesn't take a redundant Type* value,
start migrating code over to use it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49413 91177308-0d34-0410-b5e6-96231b3b80d8

many cleanups to the pow optimizer.  Allow it to handle powf,
add support for  pow(x, 2.0) -> x*x.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49411 91177308-0d34-0410-b5e6-96231b3b80d8

make ConstantFP::isExactlyValue work for long double as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49410 91177308-0d34-0410-b5e6-96231b3b80d8

Add CreateGetResult()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49398 91177308-0d34-0410-b5e6-96231b3b80d8

Check that bodies and calls but not declarations
are marked nounwind when compiling without
-fexceptions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49393 91177308-0d34-0410-b5e6-96231b3b80d8

Rename -disable-required-unwind-tables to -unwind-tables-optional.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49391 91177308-0d34-0410-b5e6-96231b3b80d8

Rename -disable-required-unwind-tables to unwind-tables-optional.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49389 91177308-0d34-0410-b5e6-96231b3b80d8

merge r48768 from branches/ggreif/parallelized-test

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49382 91177308-0d34-0410-b5e6-96231b3b80d8

Add multiple value return instruction constructor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49374 91177308-0d34-0410-b5e6-96231b3b80d8

Convenience method for setting the nounwind
attribute for a function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49373 91177308-0d34-0410-b5e6-96231b3b80d8

silence warning when assertions are disabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49371 91177308-0d34-0410-b5e6-96231b3b80d8

Fix insert point handling for multiple return values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49367 91177308-0d34-0410-b5e6-96231b3b80d8

Handle the situation in 2008-01-25-EmptyFunction.ll
correctly when unwind info is being generated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49366 91177308-0d34-0410-b5e6-96231b3b80d8

Missed one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49365 91177308-0d34-0410-b5e6-96231b3b80d8

Add -disable-required-unwind-tables to tests
that need it (usually, grepping for some string
found in unwind info)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49364 91177308-0d34-0410-b5e6-96231b3b80d8

Implement new llc flag -disable-required-unwind-tables.
Corresponds to -fno-unwind-tables (usually default in gcc).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49361 91177308-0d34-0410-b5e6-96231b3b80d8

Make getDirnameSep a static method (not part of Path's interface).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49354 91177308-0d34-0410-b5e6-96231b3b80d8

Added method Path::getDirname().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49352 91177308-0d34-0410-b5e6-96231b3b80d8

Added support for Create() calls that take an argument besides the
deserializer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49350 91177308-0d34-0410-b5e6-96231b3b80d8

Rename MemOperand to MachineMemOperand. This was suggested by
review feedback from Chris quite a while ago. No functionality
change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49348 91177308-0d34-0410-b5e6-96231b3b80d8

Remove llvm-upgrade.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49347 91177308-0d34-0410-b5e6-96231b3b80d8

Added note to getting started guide to use llvm-gcc4.2.
Removed llvm-upgrade from documentations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49346 91177308-0d34-0410-b5e6-96231b3b80d8

Add operator= implementations to SparseBitVector, allowing it to be used in GVN.  This results
in both time and memory savings for GVN.  For example, one testcase went from 10.5s to 6s with
this patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49345 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase for pr2169.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49344 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49343 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR 2169.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49339 91177308-0d34-0410-b5e6-96231b3b80d8

Use Intrinsic::getDeclaration in more places.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49338 91177308-0d34-0410-b5e6-96231b3b80d8

The "stacksave is not nounwind problem" no longer
needs to be fixed here - a previous commit made sure
that intrinsics always get the right attributes.
So remove no-longer needed code, and while there use
Intrinsic::getDeclaration rather than getOrInsertFunction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49337 91177308-0d34-0410-b5e6-96231b3b80d8

Use Intrinsic::getDeclaration to get hold of
intrinsics.  Fix up the argument type (should
be i8*, was an array*).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49336 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure that intrinsics automagically get the
right parameter attributes no matter how they
are obtained.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49335 91177308-0d34-0410-b5e6-96231b3b80d8

Re-commit of the r48822, where the infinite looping problem discovered
by Dan Gohman is fixed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49330 91177308-0d34-0410-b5e6-96231b3b80d8

Make GVN more memory efficient, particularly on code that contains a large number of
allocations, which GVN can't optimize anyways.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49329 91177308-0d34-0410-b5e6-96231b3b80d8

Remove tabs. Patch by Mike Stump!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49317 91177308-0d34-0410-b5e6-96231b3b80d8

Mark calls to llvm.stacksave, llvm.stackrestore as
nounwind.  When such calls are inlined into something
else that is invoked, they were getting changed to invokes,
which is badness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49299 91177308-0d34-0410-b5e6-96231b3b80d8

regenerate

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49293 91177308-0d34-0410-b5e6-96231b3b80d8

fix warnings with assertions disabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49285 91177308-0d34-0410-b5e6-96231b3b80d8

Silence warning when no assertions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49284 91177308-0d34-0410-b5e6-96231b3b80d8

silence a warning when assertions are disabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49283 91177308-0d34-0410-b5e6-96231b3b80d8

fix a warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49282 91177308-0d34-0410-b5e6-96231b3b80d8

fix this testcase to pass and remove a duplicate instance of itself.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49281 91177308-0d34-0410-b5e6-96231b3b80d8

Prefer to expand mask for xor to -1, so we have a chance to turn it into a not.
If it cannot be expanded, it will keep the old behaviour and try to shrink the constant.
Part of enhancement for PR2191.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49280 91177308-0d34-0410-b5e6-96231b3b80d8

API changes for class Use size reduction, wave 1.
Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49277 91177308-0d34-0410-b5e6-96231b3b80d8

Fix generation of multi-stage instruction itineraries.  Patch by
giuma.cordes@gmail.com

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49276 91177308-0d34-0410-b5e6-96231b3b80d8

-fPIC is required on x86-64 when building shared objects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49274 91177308-0d34-0410-b5e6-96231b3b80d8

disable this for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49248 91177308-0d34-0410-b5e6-96231b3b80d8

Forgot this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49247 91177308-0d34-0410-b5e6-96231b3b80d8

1. IMPLICIT_DEF can *re-define* any register.
2. Coalescer can now create an interesting situation where a register def can
   reaches itself without being killed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49246 91177308-0d34-0410-b5e6-96231b3b80d8

Favors pshufd over shufps when shuffling elements from one vector. pshufd is faster than shufps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49244 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure both PendingLoads and PendingExports are flushed
before an invoke.  Failure to do this causes references in
the landing pad to variables that were not set.  Fixes
g++.dg/eh/delayslot1.C
g++.dg/eh/fp-regs.C
g++.old-deja/g++.brendan/eh1.C

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49243 91177308-0d34-0410-b5e6-96231b3b80d8

strdup needs <cstring>. This fixes a build error with g++-4.3.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49218 91177308-0d34-0410-b5e6-96231b3b80d8

If a value is cast to its own type, then the cast
is not needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49210 91177308-0d34-0410-b5e6-96231b3b80d8

Provide an initial cut at exposing JIT compiled symbols to performance
tools.  This is currently only enabled on the mac, but could easily be
supported by other hosts that are interested.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49207 91177308-0d34-0410-b5e6-96231b3b80d8

Make ExecutionEngine::updateGlobalMapping return the old mapping.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49206 91177308-0d34-0410-b5e6-96231b3b80d8

Undo PHI elimination copy placement patch. This causes coalescing (performace) issues.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49198 91177308-0d34-0410-b5e6-96231b3b80d8

This is done.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49197 91177308-0d34-0410-b5e6-96231b3b80d8

Reenable running StripSymbols when EH is on.
Dale fixed EH.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49192 91177308-0d34-0410-b5e6-96231b3b80d8

New test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49190 91177308-0d34-0410-b5e6-96231b3b80d8

Removed a deleted file from the VStudio System project.  Also added custom build commands to engage 64 bit assembler for compilation callback on 64 bit configurations only.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49188 91177308-0d34-0410-b5e6-96231b3b80d8

if some functions don't have debug info, we were outputing the same label at the start of each of those functions.  This makes assemblers unhappy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49176 91177308-0d34-0410-b5e6-96231b3b80d8

Add member template version of SerializeTrait<T>::Create that also accepts
an optional argument for us by T's Create method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49169 91177308-0d34-0410-b5e6-96231b3b80d8

- Turn copies of implicit_def into implicit_def instructions.
- Be smarter about coalescing copies from implicit_def.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49168 91177308-0d34-0410-b5e6-96231b3b80d8

Special handling of zero-sized live intervals.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49167 91177308-0d34-0410-b5e6-96231b3b80d8

- Treat a live range defined by an implicit_def as a zero-sized one.
- Eliminate an implicit_def when it's being spilled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49166 91177308-0d34-0410-b5e6-96231b3b80d8

- PHI elimination also eliminates implicit_def that fits into a PHI node rather than copying it.
- Be (slightly) smarter about where to place the copies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49165 91177308-0d34-0410-b5e6-96231b3b80d8

Start of a series of patches related to implicit_def.
There is no point in creating a long live range defined by an implicit_def. Scheduler now duplicates implicit_def instruction for each of its uses. Therefore, if an implicit_def node has multiple uses, it will become a number of very short live ranges, rather than a long one. This will make coalescer's job easier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49164 91177308-0d34-0410-b5e6-96231b3b80d8

Re-implemented Path::createDirectoryOnDisk (for Unix).

This method allows one to create a directory, and optionally create all parent
directories that do not exist.

The original implementation would require that *all* directories along a path
are writable by the user, including directories that already exist. For example,
suppose we wanted to create the directory "/tmp/foo/bar", and the directory
"/tmp" already exists, but not "/tmp/foo". Since "/tmp" is writable by all
users, the original implementation would work, and create "/tmp/foo", followed
by "/tmp/bar".

A problem occurred, however if one wanted to created the directory
"/Users/myuser/bar" (or equivalently "/home/myuser/bar"), and "/Users/myuser"
already existed and is writable by the current user. The directory
"/User/myuser" is writable by the user, but "/User" is not. The original
implementation of createDirectoryOnDisk would return with failure since "/User"
is not writable, even though "/User/mysuser" is writable.

The new implementation works by recursively creating parents as needed, and thus
doesn't need to check the permissions on every directory in a path.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49162 91177308-0d34-0410-b5e6-96231b3b80d8

Re-enable SSE4.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49158 91177308-0d34-0410-b5e6-96231b3b80d8

Fix x86-64 encoding bug. REX prefix must always follow 0x0F prefix. For example, extractps in 64bit mode: 66 REX 0F 3A 17, not 66 0F 3A REX 17.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49157 91177308-0d34-0410-b5e6-96231b3b80d8

Cosmetic

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49156 91177308-0d34-0410-b5e6-96231b3b80d8

Temporarily disabling SSE4 until we fix the encoding issues.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49129 91177308-0d34-0410-b5e6-96231b3b80d8

Backing out 48222 temporarily.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49124 91177308-0d34-0410-b5e6-96231b3b80d8

Move instruction flag inference out of InstrInfoEmitter and into
CodeGenDAGPatterns, where it can be used in other tablegen backends.
This allows the inference to be done for DAGISelEmitter so that it
gets accurate mayLoad/mayStore/isSimpleLoad flags.

This brings MemOperand functionality back to where it was before
48329. However, it doesn't solve the problem of anonymous patterns
which expand to code that does loads or stores.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49123 91177308-0d34-0410-b5e6-96231b3b80d8

Suppress the 128-bit integer typedef on 32-bit targets, because
it causes compile errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49122 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase for EH with functions whose names are stripped.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49111 91177308-0d34-0410-b5e6-96231b3b80d8

Make EH work with unnamed functions.  Reenable running
StripSymbols when EH is on.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49110 91177308-0d34-0410-b5e6-96231b3b80d8

Partial CBackend support for 128-bit integers. This is needed
now that llvm-gcc is lowering appropriately-sized struct returns
to i128 on x86-64.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49109 91177308-0d34-0410-b5e6-96231b3b80d8

Iterators folloring a SmallVector erased element are invalidated so
don't access cached iterators from after the erased element.

Re-apply 49056 with SmallVector support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49106 91177308-0d34-0410-b5e6-96231b3b80d8

Now that I am told MachineRegisterInfo also tracks physical register uses / defs, I can do away with the horribleness I introduced a while back. It's impossible to detect if there is any use of a physical register below an instruction (and before any def of the register) with some cheap book keeping.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49105 91177308-0d34-0410-b5e6-96231b3b80d8

Remove #include<map> from LiveVariables.h. Not referenced.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49099 91177308-0d34-0410-b5e6-96231b3b80d8

Cosmetic changes per EH patch review feedback.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49096 91177308-0d34-0410-b5e6-96231b3b80d8

Add new file Support/DataFlow.h.
It allows Use-Def and Def-Use relations to be treated as graphs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49088 91177308-0d34-0410-b5e6-96231b3b80d8

Add new CC lowering rule: provide a list of registers, which can be 'shadowed',
when some another register is used for argument passing.
Currently is used on Win64.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49079 91177308-0d34-0410-b5e6-96231b3b80d8

In some situations, we need to check for local interferences between the PHI
node and its inputs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49070 91177308-0d34-0410-b5e6-96231b3b80d8

Correctly mark a valno that was previous defined by a PHI node as having an
unknown defining inst after PHI elimination.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49069 91177308-0d34-0410-b5e6-96231b3b80d8

more edits from Jon Sargeant

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49065 91177308-0d34-0410-b5e6-96231b3b80d8

Recommitting EH patch; this should answer most of the
review feedback.
-enable-eh is still accepted but doesn't do anything.
EH intrinsics use Dwarf EH if the target supports that,
and are handled by LowerInvoke otherwise.
The separation of the EH table and frame move data is,
I think, logically figured out, but either one still
causes full EH info to be generated (not sure how to
split the metadata correctly).
MachineModuleInfo::needsFrameInfo is no longer used and
is removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49064 91177308-0d34-0410-b5e6-96231b3b80d8

1. Drop default inline threshold back down to 200.
2. Do not use # of basic blocks as part of the cost computation since it doesn't really figure into function size.
3. More aggressively inline function with vector code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49061 91177308-0d34-0410-b5e6-96231b3b80d8

Reverting 49056 due to the build being broken.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49060 91177308-0d34-0410-b5e6-96231b3b80d8

ReMat of load from stub in pic mode extends the life of pic base. Currently spiller doesn't do a good job of estimating the impact. Disable for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49059 91177308-0d34-0410-b5e6-96231b3b80d8

Iterators folloring a SmallVector erased element are invalidated so
don't access cached iterators from after the erased element.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49056 91177308-0d34-0410-b5e6-96231b3b80d8

Fix compilation errors on MSVC. Patch by Argiris Kirtzidis!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49055 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unnecessary and non-deterministic checking code. Re-enable remat of load from gv stub.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49054 91177308-0d34-0410-b5e6-96231b3b80d8

Re-materialization is for uses only.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49053 91177308-0d34-0410-b5e6-96231b3b80d8

Don't use __bzero for memset if the second argument isn't zero.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49050 91177308-0d34-0410-b5e6-96231b3b80d8

Speculatively micro-optimize memory-zeroing calls on Darwin 10.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49048 91177308-0d34-0410-b5e6-96231b3b80d8

Revert 49006 for the moment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49046 91177308-0d34-0410-b5e6-96231b3b80d8

add a dropped hunk from Jon Sargeant's patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49045 91177308-0d34-0410-b5e6-96231b3b80d8

make langref more precise, wave 1, from Jon Sargeant

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49044 91177308-0d34-0410-b5e6-96231b3b80d8