instructions which define each value#) to simplify and improve the coallescer.
In particular, this patch:

1. Implements iterative coallescing.
2. Reverts an unsafe hack from handlePhysRegDef, superceeding it with a
   better solution.
3. Implements PR865, "coallescing" away the second copy in code like:

   A = B
   ...
   B = A

This also includes changes to symbolically print registers in intervals
when possible.

llvm-svn: 29862

Demote check for bison from error to warning and make sure that the
makefile can handle an empty definition for BISON variable.

llvm-svn: 29861

llvm-svn: 29860

utility of the LoopUnroll pass.

Also, add a testcase for multiblock-loop unrolling.

llvm-svn: 29859

Adjust implementation to match the new interface after exception handling
was removed in the Unix verison. NOTE: this hasn't been compiled yet!

llvm-svn: 29858

implement a movcond instruction

llvm-svn: 29857

llvm-svn: 29856

and ensure that a memory overrun won't occur while still writing Length
bytes in the outstring function.

llvm-svn: 29855

llvm-svn: 29854

llvm-svn: 29853

llvm-svn: 29852

llvm-svn: 29851

does emit linkable .o files in very simple cases.

llvm-svn: 29850

This library no longer throws nor handles exceptions, so turn off the
REQUIRES_EH flag.

llvm-svn: 29849

Final remove of exception handling from this file. lib/System can no longer
throw exceptions so there's no need for try/catch blocks here.

llvm-svn: 29848

handles exceptions.

llvm-svn: 29847

Final removal of exceptions from lib/System and adjustment of users to
accommodate.

llvm-svn: 29846

llvm-svn: 29845

llvm-svn: 29844

Eliminate exception throwing from Path::renamePathOnDisk and adjust its
users correspondingly.

llvm-svn: 29843

portion fo the program name via sys::Path().getLast(). This makes error
messages more readable since this is invariably used only in error
messages.  Instead of:
  /path/to/llvm/bin/directory/toolname: error message
we will now get:
  toolname: error message
Also, since we always have a program name (even if its defaulted), don't
check to see if it is set or not when generating error messages. This
eliminates a bunch of constant strings, saving a little under 1K of data.

llvm-svn: 29842

Remove exception throwing from Path::getDirectoryContents and its users.

llvm-svn: 29841

Remove exceptions from the Path::create*OnDisk methods. Update their users
to handle error messages via arguments and result codes.

llvm-svn: 29840

triplet ordering (large, small, small) explicit with one triplet per line.

llvm-svn: 29839

llvm-svn: 29838

Adjust code to compensate for Path class interface change.

llvm-svn: 29837

Change the Path::make*OnDisk methods exception free and adjust their usage.

llvm-svn: 29836

memory pressure. This order spaces out large executables with small ones in
between so that in a -j2 or -j3 build, it only attempts to build only one
large executable at time. If you're doing -j4, you probably have enuogh
memory anyway.

llvm-svn: 29835

llvm-svn: 29834

(hopefully) provide support for it.

llvm-svn: 29833

llvm-svn: 29832

adjust users of it to compensate.

llvm-svn: 29831

defines each value# tracked by the interval.  This will be used to improve
coallescing.

llvm-svn: 29830

version to be left blank if the build failed.

Also corrected a problem where if the build failed the nightly tester
would still try to read the results of the Dejagnutests log even
though it didnt exist.

llvm-svn: 29829

llvm-svn: 29828

a null pointer when there is an error.

llvm-svn: 29827

just return MinTime if that should ever happen.

llvm-svn: 29826

llvm-svn: 29825

llvm-svn: 29823

llvm-svn: 29821