[mips][msa] Make LSA_DESC a parameterizable class.

This way it's possible to share the instruction's description for LSA and
DLSA (to be added).

No functional changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201078 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake] Add dependencies to gtest.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201079 91177308-0d34-0410-b5e6-96231b3b80d8
[mips][msa] Update FileCheck prefix in preparation for
 the addition of Mips64 tests.

No functional changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201080 91177308-0d34-0410-b5e6-96231b3b80d8
[mips][msa] Add DLSA instruction.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201081 91177308-0d34-0410-b5e6-96231b3b80d8
Test commit - added a new line to vec_shuf-insert.ll.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201083 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: use LLVM IR to represent the vshrn operation

vshrn is just the combination of a right shift and a truncate (and the limits
on the immediate value actually mean the signedness of the shift doesn't
matter). Using that representation allows us to get rid of an ARM-specific
intrinsic, share more code with AArch64 and hopefully get better code out of
the mid-end optimisers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201085 91177308-0d34-0410-b5e6-96231b3b80d8
GlobalsModRef: Unify and clean up duplicated pointer analysis code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201087 91177308-0d34-0410-b5e6-96231b3b80d8
Make succ_iterator a real random access iterator and clean up a couple of users.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201088 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: r12 is callee-saved for interrupt handlers

For A- and R-class processors, r12 is not normally callee-saved, but is for
interrupt handlers. See AAPCS, 5.3.1.1, "Use of IP by the linker".



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201089 91177308-0d34-0410-b5e6-96231b3b80d8
[AArch64] Handle aliases of conditional branches without b.pred form.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201091 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: use natural LLVM IR for vshll instructions

Similarly to the vshrn instructions, these are simple zext/sext + trunc
operations. Using normal LLVM IR should allow for better code, and more sharing
with the AArch64 backend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201093 91177308-0d34-0410-b5e6-96231b3b80d8
Remove some prototype code accidentally committed in r201043

Thanks to Chandler for the catch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201095 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Only use S_WQM_B64 in pixel shaders

This doesn't change any functionality, since we only have two shader
types (compute and pixel) that use local memory.  We're just changing
the logic to match the documentation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201096 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Initialize M0 and emit S_WQM_B64 whenever DS instructions are used

DS instructions that access local memory can only uses addresses that
are less than or equal to the value of M0.  When M0 is uninitialized,
then we experience undefined behavior.

This patch also changes the behavior to emit S_WQM_B64 on pixel shaders
no matter what kind of DS instruction is used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201097 91177308-0d34-0410-b5e6-96231b3b80d8
Copy the ThreadLocalMode in GlobalVariable::copyAttributesFrom

This fixes the oversight from r159077.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201098 91177308-0d34-0410-b5e6-96231b3b80d8
[LPM] A terribly simple fix to a terribly complex bug: PR18773.

The crux of the issue is that LCSSA doesn't preserve stateful alias
analyses. Before r200067, LICM didn't cause LCSSA to run in the LTO pass
manager, where LICM runs essentially without any of the other loop
passes. As a consequence the globalmodref-aa pass run before that loop
pass manager was able to survive the loop pass manager and be used by
DSE to eliminate stores in the function called from the loop body in
Adobe-C++/loop_unroll (and similar patterns in other benchmarks).

When LICM was taught to preserve LCSSA it had to require it as well.
This caused it to be run in the loop pass manager and because it did not
preserve AA, the stateful AA was lost. Most of LLVM's AA isn't stateful
and so this didn't manifest in most cases. Also, in most cases LCSSA was
already running, and so there was no interesting change.

The real kicker is that LCSSA by its definition (injecting PHI nodes
only) trivially preserves AA! All we need to do is mark it, and then
everything goes back to working as intended. It probably was blocking
some other weird cases of stateful AA but the only one I have is
a 1000-line IR test case from loop_unroll, so I don't really have a good
test case here.

Hopefully this fixes the regressions on performance that have been seen
since that revision.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201104 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Implement isTruncateFree

Truncation is just accessing a subregister for any multiple of
the register size, so it's free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201107 91177308-0d34-0410-b5e6-96231b3b80d8
Change the begin and end methods in ObjectFile to match the style guide.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201108 91177308-0d34-0410-b5e6-96231b3b80d8
Fix an old FIXME. LDPO_PIE is available since 2.23, realeased 2012-10-22.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201110 91177308-0d34-0410-b5e6-96231b3b80d8
cmake: Do not export targets when installing toolchain only

Patch by Brad King!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201111 91177308-0d34-0410-b5e6-96231b3b80d8