[lit] Update LitTestCase to support lit.Test.Result.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189544 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Update shtest format to return lit.Test.Result objects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189545 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Add a TODO.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189546 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a test to not fail for users with my name. :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189547 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Change lit.Test.ResultCode to be unique across pickling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189549 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Factor out Run class to capture configuration + discovered tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189550 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Move top-level execute code into Run object.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189551 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Factor out a results consumer interface for test execution.
 - Also, change TestProvider interface to operate on test indices.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189552 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Put display lock inside the ThreadResultsConsumer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189553 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Refactor test execution logic into lit.run.Run.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189554 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Implement --max-time support by using provider cancel method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189555 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Add support for multiprocessing, under --use-processes for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189556 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Fix internal shell's argv[0] handling.

 - At least on OS X, it is important for correct behavior of /bin/[ that argv[0]
   is passed as written, and not as the full executable path.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189559 91177308-0d34-0410-b5e6-96231b3b80d8
[tests] Use multiple statements instead of 'echo -e', which is not part of BSD echo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189560 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] [tests] Add missing test input file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189561 91177308-0d34-0410-b5e6-96231b3b80d8
Add useAA() to TargetSubtargetInfo

There are several optional (off-by-default) features in CodeGen that can make
use of alias analysis. These features are important for generating code for
some kinds of cores (for example the (in-order) PPC A2 core). This adds a
useAA() function to TargetSubtargetInfo to allow these features to be enabled
by default on a per-subtarget basis.

Here is the first use of this function: To control the default of the
-enable-aa-sched-mi feature.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189563 91177308-0d34-0410-b5e6-96231b3b80d8
Use TargetSubtargetInfo::useAA() in DAGCombine

This uses the TargetSubtargetInfo::useAA() function to control the defaults of
the -combiner-alias-analysis and -combiner-global-alias-analysis options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189564 91177308-0d34-0410-b5e6-96231b3b80d8
Add getUnrollingPreferences to TTI

Allow targets to customize the default behavior of the generic loop unrolling
transformation. This will be used by the PowerPC backend when targeting the A2
core (which is in-order with a deep pipeline), and using more aggressive
defaults is important.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189565 91177308-0d34-0410-b5e6-96231b3b80d8
Revert: r189565 - Add getUnrollingPreferences to TTI

Revert unintentional commit (of an unreviewed change).

Original commit message:

Add getUnrollingPreferences to TTI

Allow targets to customize the default behavior of the generic loop unrolling
transformation. This will be used by the PowerPC backend when targeting the A2
core (which is in-order with a deep pipeline), and using more aggressive
defaults is important.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189566 91177308-0d34-0410-b5e6-96231b3b80d8
Move StringToOffsetTable into the TableGen include directory so I can use it in clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189567 91177308-0d34-0410-b5e6-96231b3b80d8