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- Update some outdated code related inactive live ranges.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

on 403.gcc from ~15s to ~10s.

llvm-svn: 40884

llvm-svn: 40883

This brings GVN to parity with GCSE+LoadVN.

llvm-svn: 40882

llvm-svn: 40881

llvm-svn: 40878

(on Darwin, anyway).  Fix some table omissions for
LD arithmetic.

llvm-svn: 40877

llvm-svn: 40875

llvm-svn: 40874

This resolves a regression of BasicAA which failed to find any memory information for overloaded intrinsics (PR1600). This resolves that issue, and improves the matching scheme to use a BitVector rather than a binary search.

llvm-svn: 40872

llvm-svn: 40870

llvm-svn: 40868

condition. Fixes 1597.

llvm-svn: 40867

comparison. Fixes bug 1598.

llvm-svn: 40866

introduced by chandler's patch.

llvm-svn: 40864

llvm-svn: 40863

Make this code more efficient.

llvm-svn: 40861

llvm-svn: 40859

2. Make domtree printing print dfin/dfout #'s
3. Fix the Transforms/LoopSimplify/2004-04-13-LoopSimplifyUpdateDomFrontier.ll failure from last night (in DominanceFrontier::splitBlock).

w.r.t. #3, my patches last night happened to expose the bug, but this 
has been broken since Owen's r35839 patch to LoopSimplify.  The code
was subsequently moved over from LoopSimplify into Dominators, carrying
the latent bug.  Fun stuff.

llvm-svn: 40858

llvm-svn: 40854