llvm-svn: 40960

(constants are still not handled).  Adds ConvertActions
to control fp-to-fp conversions (these are currently
defaulted for all other targets, so no changes there).

llvm-svn: 40958

llvm-svn: 40957

to do so.

llvm-svn: 40955

llvm-svn: 40953

llvm-svn: 40952

llvm-svn: 40950

llvm-svn: 40947

llvm-svn: 40946

llvm-svn: 40944

llvm-svn: 40941

documentation implies and as its uses depend.

llvm-svn: 40939

stdin through llvm-ld and llvm-link.

llvm-svn: 40938

llvm-svn: 40936

and one hack to avoid hitting a bad case when the alias analysis is imprecise.

llvm-svn: 40935

it for potentially undeading pointers.

llvm-svn: 40933

No functionality change.

llvm-svn: 40932

llvm-svn: 40927

llvm-svn: 40926

llvm-svn: 40925

ConstantFoldInstruction on calls) by avoiding Value::getName().  getName() constructs
and returns an std::string, which does heap allocation stuff.  This slightly speeds up
instcombine.

llvm-svn: 40924

1. domtree is a tree, not a graph.  There is no need to avoid revisiting nodes with a set.
2. the worklist can contain the child iterator pointers so we don't get N^2 rescanning of children.

This speeds up updateDFSNumbers significantly, making it basically free.  On the testcase in PR1432,
this speeds up loopsimplify by another 3x, dropping it from the 12th most expensive pass to the to
the 30th. :)  It used to be #1.

llvm-svn: 40923

llvm-svn: 40922

llvm-svn: 40921

natural loop canonicalization (which does many cfg xforms) by 4.3x, for 
example.  This also fixes a bug in postdom dfnumber computation.

llvm-svn: 40920

llvm-svn: 40919

- Fix some minor bugs related to special markers on val# def. ~0U means
  undefined, ~1U means dead val#.

llvm-svn: 40916

llvm-svn: 40915

llvm-svn: 40914

kill instruction #, and source register number (iff the value# is defined by a
copy).
- Now def instruction # is set for every value#, not just for copy defined ones.
- Update some outdated code related inactive live ranges.
- Kill info not yet set. That's next patch.

llvm-svn: 40913

llvm-svn: 40912

llvm-svn: 40909

llvm-svn: 40908

SSE mode (all but conversions <-> other FP types, I think):
>>Do not mark all-80-bit operations as "Requires[FPStack]"
(which really means "not SSE").
>>Refactor load-and-extend to facilitate this.
>>Update comments.
>>Handle long double in SSE when computing FP_REG_KILL.

llvm-svn: 40906

llvm-svn: 40903

Fix comment typo

llvm-svn: 40898

Fix GLIBCXX_DEBUG error triggered by incrementing erased iterator.

llvm-svn: 40897

Add a missing forward declaration.

llvm-svn: 40896

llvm-svn: 40887

Last x87 bits for full functionality (not
thoroughly tested, and long doubles do not work
in SSE modes at all - use -mcpu=i486 for now)

llvm-svn: 40886