llvm-svn: 81848

While I'm there, change code that does:
  SomeTy == Type::getFooType(Context)
into:
  SomeTy->getTypeID() == FooTyID
to decrease the amount of useless type creation which may involve locking, etc.

llvm-svn: 81846

an unpacked one.

llvm-svn: 81845

argpromote to avoid invalidating an iterator.  This fixes PR4977.
All clang tests now pass with expensive checking (on my system 
at least).

llvm-svn: 81843

llvm-svn: 81840

are in the SCC for each execution of a CGSCC pass.

llvm-svn: 81838

llvm-svn: 81836

llvm-svn: 81834

llvm-svn: 81833

llvm-svn: 81827

GetProcessId was introduced only in XP. As a bonus, this change makes Program
objects copyable, since Program is now basically a PID.

llvm-svn: 81826

llvm-svn: 81824

llvm-svn: 81823

llvm-svn: 81822

has multiple uses, as one of the other uses may be on a path
to a different node above the callseq_start, because that
leads to a cyclic graph. This problem is exposed when
-combiner-global-alias-analysis is used. This fixes PR4880.

llvm-svn: 81821

llvm-svn: 81819

versions of CALL and JMP with segmented addresses
provided in-line, as pairs of immediates.

llvm-svn: 81818

parses the .word directive as 4 bytes and ARMAsmParser::ParseInstruction will
give an error is called.  Broke out the test of the .word directive into two
different test cases, one for x86 and one for arm.

llvm-svn: 81817

1. Switch from an std::set to a SmallPtrSet for visited chain nodes.
2. Do not force the recursive flattening of token factor nodes, regardless of
   use count.
3. Immediately process newly created TokenFactor nodes.

Also, improve combiner-aa by teaching it that loads to non-overlapping offsets
of relatively aligned objects cannot alias.

These changes result in a >5x speedup for combiner-aa on most testcases.

llvm-svn: 81816

it splits them.

llvm-svn: 81815

its result if the condition is false.

llvm-svn: 81814

DAG Combiner to disambiguate chains for loads and stores of types which are
 broken up by the Legalizer into smaller pieces.  

llvm-svn: 81813

memset region to the alignment of the new start address.

llvm-svn: 81810

llvm-svn: 81800

llvm-svn: 81799

Add early coalescing to liveintervals. This is work in progress and is known to miscompute some tests. Read it at your own rish, I have aged 10 year while writing this.

The gist of this is if source of some of the copies that feed into a phi join is defined by the phi join, we'd like to eliminate them. However, if any of the non-identity source overlaps the live interval of the phi join then the coalescer won't be able to coalesce them. The early coalescer's job is to eliminate the identity copies by partially-coalescing the two live intervals.

llvm-svn: 81796

created once, so shouldn't be stuck in the middle of the loop. Also early exit
if there are no uses of UnwindInst in the function.

llvm-svn: 81785

obtained via accessor functions.

llvm-svn: 81782

llvm-svn: 81773

llvm-svn: 81770

Patch by Xerxes Rånby!

llvm-svn: 81768

llvm-svn: 81766

llvm-svn: 81764

llvm-svn: 81758

llvm-svn: 81757

llvm-svn: 81755

full AsmPrinter, and change TargetRegistry to keep track
of registered MCInstPrinters.

llvm-mc is still linking in the entire
target foo to get the code emitter stuff, but this is an
important step in the right direction.

llvm-svn: 81754

llvm-svn: 81753

llvm-svn: 81752

llvm-svn: 81751