Re-fix the issue Bill fixed in r147899 in a slightly different way, which doesn't abuse the semantics of linker_private.  We don't really want to merge any string constant with a weak_odr global.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147971 91177308-0d34-0410-b5e6-96231b3b80d8
Move RegAllocBase into its own cpp file separate from RABasic.

No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147972 91177308-0d34-0410-b5e6-96231b3b80d8
Cleanup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147975 91177308-0d34-0410-b5e6-96231b3b80d8
Sink spillInterferences into RABasic.

This helper method is too simplistic for RAGreedy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147976 91177308-0d34-0410-b5e6-96231b3b80d8
Use a DenseMap.

This appears to improve sqlite3's compile time by ~2%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147978 91177308-0d34-0410-b5e6-96231b3b80d8
Make data structures private.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147979 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r147978. A DenseMap's iterators may become invalidated here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147980 91177308-0d34-0410-b5e6-96231b3b80d8
Switch all of the uses of my InsertDAGNode helper to follow the exact
same pattern. We already had this pattern is a few places, but others
tried to make a rough approximation of an actual DAG structure. As not
everywhere went to this trouble, nothing could rely on this being done.
In fact, I've checked all references to these node Ids, and the ones
that are using the topo-sort properties are actually satisfied with
a strict-weak-ordering. The requirement appears to be that Use >= Def.

I've added a big blurb of comments to this bit of the transform to
clarify why the order is so important for the next reader of the code.

I'm starting with this change as it is very small, and trivially
reverted if something breaks or the >= above really does need to be >.
If that proves the case, we can hide the problem by reverting this
patch, but the problem exists elsewhere as well, and so a more
comprehensive solution will be needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148001 91177308-0d34-0410-b5e6-96231b3b80d8
Add intel style operand parser skeleton. 
This is a work in progress.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148002 91177308-0d34-0410-b5e6-96231b3b80d8
A DenseMap of a std::map isn't a very good idea because the "grow()" method will
need to make a deep copy of each of the std::maps. Use a std::map of the
std::map instead. This improves the compile time of sqlite3 by ~2%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148003 91177308-0d34-0410-b5e6-96231b3b80d8
Add predicate method check match memory operand size, if available.

In att style asm syntax memory operand size is derived from suffix attached with mnemonic.  In intel style asm syntax it is part of memory operand hence predicate method check is required to select appropriate instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148006 91177308-0d34-0410-b5e6-96231b3b80d8
Move Sched::Preference out of TargetMachine.h where it is not referenced.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148014 91177308-0d34-0410-b5e6-96231b3b80d8
X86: Generalize the x << (y & const) optimization to also catch masks with more set bits set than 31 or 63.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148024 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a bug in the AVX 256-bit shuffle code in cases where the splat element is on the boundary of two 128-bit vectors.
The attached testcase was stuck in an endless loop.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148027 91177308-0d34-0410-b5e6-96231b3b80d8
After Jakob's r147938 exception handling on i386 was completely broken.

Restore the (obviously wrong) behavior from before r147938 without relying on
undefined behavior. Add a fat FIXME note.

This should fix nightly tester failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148030 91177308-0d34-0410-b5e6-96231b3b80d8
Make SplitAnalysis::UseSlots private.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148031 91177308-0d34-0410-b5e6-96231b3b80d8
Rename X86ATTAsmParser -> X86AsmParser

We are using one parser to parse att as well as intel style syntax.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148032 91177308-0d34-0410-b5e6-96231b3b80d8
Allow targets to select source order pre-RA scheduler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148033 91177308-0d34-0410-b5e6-96231b3b80d8
Add test case to check intel syntax parsing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148034 91177308-0d34-0410-b5e6-96231b3b80d8
Remove test case, as Chris suggested.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148039 91177308-0d34-0410-b5e6-96231b3b80d8