Remove pseudo instructions that are no longer used.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157492 91177308-0d34-0410-b5e6-96231b3b80d8
Remove the code that emits MIPS' .cprestore directive.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157493 91177308-0d34-0410-b5e6-96231b3b80d8
Remove the code that expands MIPS' .cpload directive.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157494 91177308-0d34-0410-b5e6-96231b3b80d8
Move the code in MipsExpandPseudo to MipsInstrInfo::expandPostRAPseudo.
Delete MipsExpandPseudo.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157495 91177308-0d34-0410-b5e6-96231b3b80d8
Delete MipsExpandPseudo.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157496 91177308-0d34-0410-b5e6-96231b3b80d8
bounds checking: add support for byval arguments

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157498 91177308-0d34-0410-b5e6-96231b3b80d8
Open in read/write mode, creating the file if it doesn't exist.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157501 91177308-0d34-0410-b5e6-96231b3b80d8
Small code cleanup. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157502 91177308-0d34-0410-b5e6-96231b3b80d8
Fix predicate HasStandardEncoding in MipsInstrInfo.td per suggestion of
Benjamin Kramer.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157504 91177308-0d34-0410-b5e6-96231b3b80d8
The llvm_gcda_increment_indirect_counter function writes to the arguments that
are passed in. However, those arguments may be in a write-protected area, as far
as the runtime library is concerned. For instance, the data could be placed into
a 'linkedit' section, which isn't writable. Emit the code from
llvm_gcda_increment_indirect_counter directly into the function instead.

Note: The code for this is ugly, and can lead to bloat. We should look into
simplifying this code instead of having all of these branches.

<rdar://problem/11181370>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157505 91177308-0d34-0410-b5e6-96231b3b80d8
Move this debug statement earlier so it is easy to see the order in
which operands come flying out of the linearization stage.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157512 91177308-0d34-0410-b5e6-96231b3b80d8
ScoreboardHazardRecognizer: Remove dead conditional in debug code.

Negative cycles are filtered out earlier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157514 91177308-0d34-0410-b5e6-96231b3b80d8
Add support for branch weight metadata to MDBuilder and use it in various places.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157515 91177308-0d34-0410-b5e6-96231b3b80d8
SimplifyCFG: Turn the ad-hoc std::pair that represents switch cases into an explicit struct.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157516 91177308-0d34-0410-b5e6-96231b3b80d8
Since commit 157467, if reassociate isn't actually going to change an expression
then it doesn't alter the instructions composing it, however it would continue
to move the instructions to just before the expression root.  Ensure it doesn't
move them either, so now it really does nothing if there is nothing to do.  That
commit also ensured that nsw etc flags weren't cleared if the expression was not
being changed.  Tweak this a bit so that it doesn't clear flags on the initial
part of a computation either if that part didn't change but later bits did.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157518 91177308-0d34-0410-b5e6-96231b3b80d8
SelectionDAGBuilder: When emitting small compare chains for switches order them by using edge weights.

SimplifyCFG tends to form a lot of 2-3 case switches when merging branches. Move
the most likely condition to the front so it is checked first and the others can
be skipped. This is currently not as effective as it could be because SimplifyCFG
destroys profiling metadata when merging branches and switches. Merging branch
weight metadata is tricky though.

This code touches at most 3 cases so I didn't use a proper sorting algorithm.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157521 91177308-0d34-0410-b5e6-96231b3b80d8
SDAGBuilder: Don't create an invalid iterator when there is only one switch case.

Found by libstdc++'s debug mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157522 91177308-0d34-0410-b5e6-96231b3b80d8