Rename SelectionDAGISel::Schedule to
SelectionDAGISel::CreateScheduler, and make it just create the
scheduler. Leave running the scheduler to the higher-level code.
This makes the higher-level code a little more explicit and
easier to follow, and will help enable some future refactoring.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63944 91177308-0d34-0410-b5e6-96231b3b80d8

Print globl directive for variables with external linkage (global variables).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63943 91177308-0d34-0410-b5e6-96231b3b80d8

Delete an unused member function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63941 91177308-0d34-0410-b5e6-96231b3b80d8

We don't really need the abort here. This unbreak x86_64 linux build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63940 91177308-0d34-0410-b5e6-96231b3b80d8

Move getPointerRegClass from TargetInstrInfo to TargetRegisterInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63938 91177308-0d34-0410-b5e6-96231b3b80d8

Move ScheduleDAGSDNodes.h to be a private header. Front-ends
that previously included this header should include
SchedulerRegistry.h instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63937 91177308-0d34-0410-b5e6-96231b3b80d8

Add TargetInstrInfo::isSafeToMoveRegisterClassDefs. It returns true if it's safe to move an instruction which defines a value in the register class. Replace pre-splitting specific IgnoreRegisterClassBarriers with this new hook.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63936 91177308-0d34-0410-b5e6-96231b3b80d8

Change -1 => negative number.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63935 91177308-0d34-0410-b5e6-96231b3b80d8

Move ScheduleDAGInstrs.h to be a private header. Front-ends
that used this header to select a scheduling policy should
use SchedulerRegistry.h instead (llvm-gcc and clang were
updated a while ago).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63934 91177308-0d34-0410-b5e6-96231b3b80d8

Document the meaning of -1 for getCopyCost.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63933 91177308-0d34-0410-b5e6-96231b3b80d8

Tidy up the ScheduleDAG class definition a little. Make a few
more member functions protected, and group all the protected
members together.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63932 91177308-0d34-0410-b5e6-96231b3b80d8

Don't pass BitVectors by value, pass them by reference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63931 91177308-0d34-0410-b5e6-96231b3b80d8

Correct strange whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63927 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore DbgInfoIntrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63923 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR3489, use bits instead of bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63916 91177308-0d34-0410-b5e6-96231b3b80d8

get rid of some non-DebugLoc getTargetNode variants.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63909 91177308-0d34-0410-b5e6-96231b3b80d8

Free the buffer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63907 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test. It produces unexpected code if sse4.1 is on.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63906 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of one more non-DebugLoc getNode and
its corresponding getTargetNode.  Lots of
caller changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63904 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a crasher: we need to check that the function is non-null before using it!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63902 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor my previous change to maintain the distinction between AliasAnalysis and BasicAliasAnalysis.  This involves some wider changes because it
folds away some never-used methods.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63900 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore dbg intrinsics while propagating conditional expression info. Take 2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63898 91177308-0d34-0410-b5e6-96231b3b80d8

isAsCheapAsMove instructions can have register src operands. Check if they are really re-materializable.
This fixes sse.expandfft and sse.stepfft.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63890 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a non-DebugLoc version of getNode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63889 91177308-0d34-0410-b5e6-96231b3b80d8

Revert rev. 63876. It is causing llvm-gcc bootstrap failure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63888 91177308-0d34-0410-b5e6-96231b3b80d8

Delete some trailing whiespaces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63887 91177308-0d34-0410-b5e6-96231b3b80d8

Remove 3 non-DebugLoc variants of getNode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63886 91177308-0d34-0410-b5e6-96231b3b80d8

FIx spelling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63883 91177308-0d34-0410-b5e6-96231b3b80d8

Probe for flags before using them to try to help compiling with
compilers that don't support those flags.  This hopefully will help
gcc 3.X compile this code.  http://llvm.org/PR3487

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63882 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead blocks in the end.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63880 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore dbg intrinsics while propagating conditional expression info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63876 91177308-0d34-0410-b5e6-96231b3b80d8

testcase for rdar://6551276 and llvm-gcc r63873

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63874 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR3488: llvm-ar r doesn't replace existing files

Patch by Daniel Shelton!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63870 91177308-0d34-0410-b5e6-96231b3b80d8

Revert the previous commit.  It seems it didn't
really solve the problem.  Also it changed the
name from libLLVMgold to LLVMgold (correcting
the name resulted in the original problem
suddenly reappearing).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63861 91177308-0d34-0410-b5e6-96231b3b80d8

Stop llvm-config thinking that there are circular
dependencies between libraries due to __dso_handle
when doing "make install".  I don't know what the
LINK_COMPONENTS stuff is about, so I left it alone.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63860 91177308-0d34-0410-b5e6-96231b3b80d8

Machine LICM increases register pressure and it almost always increase code size. For now, disable it for optimizing for size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63856 91177308-0d34-0410-b5e6-96231b3b80d8

Turn on machine LICM in non-fast mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63855 91177308-0d34-0410-b5e6-96231b3b80d8

Teach machine licm to CSE hoisted instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63854 91177308-0d34-0410-b5e6-96231b3b80d8

ReMaterializeTrivialDef need to trim the live interval to the last kill if the copy kills the source register. This fixes uint64tof64.ll after ARM::MOVi is marked as isAsCheapAsAMove.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63853 91177308-0d34-0410-b5e6-96231b3b80d8

A few more isAsCheapAsAMove.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63852 91177308-0d34-0410-b5e6-96231b3b80d8

Clarify comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63851 91177308-0d34-0410-b5e6-96231b3b80d8

if we have a large GEP offset on a 32-bit or other target, make
sure to print the value properly sext'd to the right pointer size.
This fixes PR3481.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63843 91177308-0d34-0410-b5e6-96231b3b80d8

Pre-alloc splitting needs to be more careful to avoid inserting spills/restores
between call frame setup/restore points.  Unfortunately, this regresses
code size a bit, but at least it's correct now!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63837 91177308-0d34-0410-b5e6-96231b3b80d8

PR3485, document alignment on byref.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63836 91177308-0d34-0410-b5e6-96231b3b80d8

It's not obvious, but lto_module_create_from_memory doesn't need to use the
buffer after it creates the Module. Thus, we don't need to store this pointer
in claimed_file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63834 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug where we were not emitting a cvt rnd sat node for converting
between a unsigned integer and signed integer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63831 91177308-0d34-0410-b5e6-96231b3b80d8

Remove accidentally included debug message!

Reword a comment for clarity. Remove some extra whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63823 91177308-0d34-0410-b5e6-96231b3b80d8

Reapply 63765.  Patches for clang and llvm-gcc to follow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63812 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of 3 non-DebugLoc getNode variants.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63808 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore dbg intrinsics while folding switch instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63802 91177308-0d34-0410-b5e6-96231b3b80d8

Remove non-DebugLoc versions of getMergeValues, ZeroExtendInReg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63800 91177308-0d34-0410-b5e6-96231b3b80d8

Remove non-DebugLoc forms of CopyToReg and CopyFromReg.
Adjust callers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63789 91177308-0d34-0410-b5e6-96231b3b80d8

Reverting 63765.  This broke the build of both clang
and llvm-gcc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63786 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore dbg intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63781 91177308-0d34-0410-b5e6-96231b3b80d8

Add test case for r63760.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63774 91177308-0d34-0410-b5e6-96231b3b80d8

Remove now-incorrect test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63772 91177308-0d34-0410-b5e6-96231b3b80d8

Alphabetize includes. Update comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63771 91177308-0d34-0410-b5e6-96231b3b80d8

80 column rule.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63768 91177308-0d34-0410-b5e6-96231b3b80d8

Remove non-DebugLoc versions of getLoad and getStore.
Adjust the many callers of those versions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63767 91177308-0d34-0410-b5e6-96231b3b80d8

New feature: add support for target intrinsics being defined in the
target directories themselves.  This also means that VMCore no longer
needs to know about every target's list of intrinsics.  Future work
will include converting the PowerPC target to this interface as an
example implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63765 91177308-0d34-0410-b5e6-96231b3b80d8

Avoids generating a legalization assert for the case where a vector type is legal
but when legalizing the operation, we split the vector type and generate a library
call whose type needs to be promoted. For example, X86 with SSE on but MMX off,
a divide v2i64 will be scalarized to 2 calls to a library using i64.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63760 91177308-0d34-0410-b5e6-96231b3b80d8

mention that PIC is needed for libLTO and libLLVMgold

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63755 91177308-0d34-0410-b5e6-96231b3b80d8

Bill implemented this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63752 91177308-0d34-0410-b5e6-96231b3b80d8

add a note, this is why we're faster at SciMark-MonteCarlo with
SSE disabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63751 91177308-0d34-0410-b5e6-96231b3b80d8

Skip over zero registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63748 91177308-0d34-0410-b5e6-96231b3b80d8

allow main to have any integer type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63743 91177308-0d34-0410-b5e6-96231b3b80d8

remove printf - it was there only for debugging!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63742 91177308-0d34-0410-b5e6-96231b3b80d8

add support for .a files containing LLVM IR to the gold plugin

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63741 91177308-0d34-0410-b5e6-96231b3b80d8

Minor code cleanups; no functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63740 91177308-0d34-0410-b5e6-96231b3b80d8

Since I'm obliged to work with a development OS that currently doesn't
support GraphViz, I've been using the foo->dump() facility.  This
patch is a minor rewrite to the SelectionDAG dump() stuff to make it a
little more helpful.  The existing foo->dump() functionality does not
change; this patch adds foo->dumpr().  All of this is only useful when
running LLVM under a debugger.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63736 91177308-0d34-0410-b5e6-96231b3b80d8

Allow the inverse transform x86_fp80 -> i80 (also
fires during the Ada build).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63731 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR3468: a crash when constant folding a bitcast of
i80 to x86 long double (this was presumably generated
by sroa).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63730 91177308-0d34-0410-b5e6-96231b3b80d8

Don't call isInvariantLoad twice.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63729 91177308-0d34-0410-b5e6-96231b3b80d8

Don't bother hoisting out a "cheap" instruction if all of its uses are PHIs. LICM "cheap" instructions are not particularly beneficial to start with. This will just end up making the copies harder to coalesce.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63728 91177308-0d34-0410-b5e6-96231b3b80d8

For now, only hoist re-materilizable instructions. LICM will increase register pressure. We want to avoid spilling more instructions if it's possible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63725 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63724 91177308-0d34-0410-b5e6-96231b3b80d8

Reapply patch from r62553, with a fix to avoid looking for an ffi.h that isn't
there.

This changes the interpreter to use libffi. After this patch, the interpreter
will barely be able to call any external functions if built on a system without
libffi installed (just enough to pass 'make check' really). But with libffi,
we can now call any function that isn't variadic or taking a struct or vector
parameter (but pointer to struct is fine). Patch by Alexei Svitkine!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63723 91177308-0d34-0410-b5e6-96231b3b80d8

Finish making AliasAnalysis aware of the fact that most atomic intrinsics only dereference their arguments, and enhance
BasicAA to make use of this fact when computing ModRef info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63718 91177308-0d34-0410-b5e6-96231b3b80d8

Remove non-DebugLoc forms of the exotic forms
of Lod and Sto; patch uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63716 91177308-0d34-0410-b5e6-96231b3b80d8

fix a pretty serious bug in StringMap where GetOrCreate(strstart,strend, z)
would not set new values to Z.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63707 91177308-0d34-0410-b5e6-96231b3b80d8

add a friend needed by a stringmap change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63706 91177308-0d34-0410-b5e6-96231b3b80d8

Remove some more non-DebugLoc versions of construction
functions, with callers adjusted to fit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63705 91177308-0d34-0410-b5e6-96231b3b80d8

Check in file I forgot.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63704 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a few non-DebugLoc versions of node creation
functions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63703 91177308-0d34-0410-b5e6-96231b3b80d8

Fixes a case where we generate an incorrect mask for pshfhw in the presence
of undefs and incorrectly determining if we have punpckldq.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63702 91177308-0d34-0410-b5e6-96231b3b80d8

While folding vallue comparison terminators ignore dbg intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63700 91177308-0d34-0410-b5e6-96231b3b80d8

Patch up omissions in DebugLoc propagation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63693 91177308-0d34-0410-b5e6-96231b3b80d8

Fill in more omissions in DebugLog propagation.
I think that's it for this directory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63690 91177308-0d34-0410-b5e6-96231b3b80d8

Constify and don't return a reference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63689 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore dbg intrinsics while hoisting common code in the two blocks up into the branch block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63687 91177308-0d34-0410-b5e6-96231b3b80d8

DebugLoc propagation; adjustment to things omitted
from SelectionDagBuild.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63680 91177308-0d34-0410-b5e6-96231b3b80d8

Erm. Would be nice to initialize this variable. . .

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63677 91177308-0d34-0410-b5e6-96231b3b80d8

Add getDebugLocTuple to retrieve the DebugLocTuple for a given DebugLoc object.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63676 91177308-0d34-0410-b5e6-96231b3b80d8

Add getter for the index.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63675 91177308-0d34-0410-b5e6-96231b3b80d8

Need this file too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63674 91177308-0d34-0410-b5e6-96231b3b80d8

Add some DL propagation to places that didn't
have it yet.  More coming.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63673 91177308-0d34-0410-b5e6-96231b3b80d8

Do not let dbg intrinsic block folding of two entry phi node.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63671 91177308-0d34-0410-b5e6-96231b3b80d8

If "optimize for size" attribute is set then block non-trivial loop unswitches but allow trivial loop unswitches.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63670 91177308-0d34-0410-b5e6-96231b3b80d8

DebugLoc propgation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63664 91177308-0d34-0410-b5e6-96231b3b80d8

More whitespace fixin'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63663 91177308-0d34-0410-b5e6-96231b3b80d8