Add some missing isel predicates on def : pat patterns to avoid generating VFP vmla / vmls (they cause stalls). Disabling them in isel is properly not a right solution, I'll look into a proper solution next.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118922 91177308-0d34-0410-b5e6-96231b3b80d8

Kill more unused stuff.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118921 91177308-0d34-0410-b5e6-96231b3b80d8

MCELF: Copy the symbol name only if we're going to modify it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118920 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118919 91177308-0d34-0410-b5e6-96231b3b80d8

Add --enable-docs. Patch by NAKAMURA Takumi.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118918 91177308-0d34-0410-b5e6-96231b3b80d8

When the definition of an address value is in a different block
from the user of the address, fall back to just using the
address in a register instead of bailing out of fast-isel
altogether.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118917 91177308-0d34-0410-b5e6-96231b3b80d8

accept lret as an alias for lretl, fixing the reopened part of PR8592

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118916 91177308-0d34-0410-b5e6-96231b3b80d8

Remove what looks like dead code in the production of debug lines.

We only produce debug line information if we have seen a line directive, so
this code is dead. Also, if we want to be bug by bug compatible with
gas and sometimes produce "empty" .debug_line sections, this will
match the content produced by gas.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118914 91177308-0d34-0410-b5e6-96231b3b80d8

typo (4th checkin for one fix)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118913 91177308-0d34-0410-b5e6-96231b3b80d8

Emacs auto-fill bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118908 91177308-0d34-0410-b5e6-96231b3b80d8

Fill in the default predication bits for ARM unconditional branch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118907 91177308-0d34-0410-b5e6-96231b3b80d8

Test case for PR8287: SD scheduling time. Fixed in r118904.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118906 91177308-0d34-0410-b5e6-96231b3b80d8

Encoding for ARM LDRSB instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118905 91177308-0d34-0410-b5e6-96231b3b80d8

Fixes PR8287: SD scheduling time. The fix is a failsafe that prevents
catastrophic compilation time in the event of unreasonable LLVM
IR. Code quality is a separate issue--someone upstream needs to do a
better job of reducing to llvm.memcpy. If the situation can be reproduced with
any supported frontend, then it will be a separate bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118904 91177308-0d34-0410-b5e6-96231b3b80d8

implement PR8592: empirically "lretq" is a "lret" with a rex.w prefix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118903 91177308-0d34-0410-b5e6-96231b3b80d8

tidy up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118896 91177308-0d34-0410-b5e6-96231b3b80d8

gnu as support both % and @ before types, do the same.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118893 91177308-0d34-0410-b5e6-96231b3b80d8

Re-disable TBAA for now; it broke MultiSource/Applications/JM/lencod,
at least.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118890 91177308-0d34-0410-b5e6-96231b3b80d8

Fix memory access lowering on SPU, adding
support for the case where alignment<value size.

These cases were silently miscompiled before this patch.
Now they are overly verbose -especially storing is- and
any front-end should still avoid misaligned memory
accesses as much as possible. The bit juggling algorithm
added here probably has some room for improvement still.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118889 91177308-0d34-0410-b5e6-96231b3b80d8

Fix up a few more spots of addrmode2 (or not) changes that were
missed. Update some comments accordingly.

Fixes rdar://8652289

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118888 91177308-0d34-0410-b5e6-96231b3b80d8

Enable TBAA.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118884 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some style issues in PBQP. Patch by David Blaikie.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118883 91177308-0d34-0410-b5e6-96231b3b80d8

Enhance DSE to handle the case where a free call makes more than
one store dead. This is especially noticeable in
SingleSource/Benchmarks/Shootout/objinst.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118875 91177308-0d34-0410-b5e6-96231b3b80d8

Filecheckize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118874 91177308-0d34-0410-b5e6-96231b3b80d8

Remove possibly useful info from comment, per Chris.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118865 91177308-0d34-0410-b5e6-96231b3b80d8

Enable mips32 mul instruction. Patch by Akira Hatanaka <ahatanaka@mips.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118864 91177308-0d34-0410-b5e6-96231b3b80d8

describe the preferred approach to silencing 'unused variable warnings' due to asserts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118863 91177308-0d34-0410-b5e6-96231b3b80d8

add operand iterator apis to MachineInstr, patch by ether zhhb.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118862 91177308-0d34-0410-b5e6-96231b3b80d8

Start of support for binary emit of 16-it Thumb instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118859 91177308-0d34-0410-b5e6-96231b3b80d8

Fill out support for Thumb2 encodings of NEON instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118854 91177308-0d34-0410-b5e6-96231b3b80d8

The BRK instruction in the MicroBlaze is a branch-and-link.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118848 91177308-0d34-0410-b5e6-96231b3b80d8

Doxygenify

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118846 91177308-0d34-0410-b5e6-96231b3b80d8

Add helper functions for computing the Location of load, store,
and vaarg instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118845 91177308-0d34-0410-b5e6-96231b3b80d8

Fix tblgen instruction errors exposed by MC asm parser tests
Fix minimum 16-bit signed value error exposed by MC asm parser tests
Add initial MC asm parser tests for the MBlaze backend

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118844 91177308-0d34-0410-b5e6-96231b3b80d8

Add correct Thumb2 encodings for NEON vst[1,2,3,4] and vld[1,2,3,4].

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118843 91177308-0d34-0410-b5e6-96231b3b80d8

Don't forget the TBAA info, if available.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118842 91177308-0d34-0410-b5e6-96231b3b80d8

Factor out Instruction::isSafeToSpeculativelyExecute's code for
testing for dereferenceable pointers into a helper function,
isDereferenceablePointer.  Teach it how to reason about GEPs
with simple non-zero indices.

Also eliminate ArgumentPromtion's IsAlwaysValidPointer,
which didn't check for weak externals or out of range gep
indices.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118840 91177308-0d34-0410-b5e6-96231b3b80d8

Flesh out tests for Thumb2 encodings of NEON instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118837 91177308-0d34-0410-b5e6-96231b3b80d8

Delete unneeded ssp attributes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118836 91177308-0d34-0410-b5e6-96231b3b80d8

Revert the accidental commit I made reverting the previous commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118835 91177308-0d34-0410-b5e6-96231b3b80d8

Trailing whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118831 91177308-0d34-0410-b5e6-96231b3b80d8

ARM fixup encoding for direct call instructions (BL).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118829 91177308-0d34-0410-b5e6-96231b3b80d8

Revert this temporarily.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118827 91177308-0d34-0410-b5e6-96231b3b80d8

Change the prologue and epilogue to use push/pop for the low ARM registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118823 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid calling alias on non-pointer values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118822 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for Thumb2 encodings of NEON data processing instructions, using the new PostEncoderMethod infrastructure.
More tests to come.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118819 91177308-0d34-0410-b5e6-96231b3b80d8

Mark labels declared in tls sections as STT_TLS. This matches the behavior of
gas.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118818 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed some bugs in MBlaze asm parser that were introduced when removing OwningPtrs from the code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118807 91177308-0d34-0410-b5e6-96231b3b80d8

add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118806 91177308-0d34-0410-b5e6-96231b3b80d8

Initial comdat implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118805 91177308-0d34-0410-b5e6-96231b3b80d8

TBAA-enable ArgumentPromotion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118804 91177308-0d34-0410-b5e6-96231b3b80d8

Add a FIXME comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118803 91177308-0d34-0410-b5e6-96231b3b80d8

Encoding of destination fixup for ARM branch and conditional branch
instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118801 91177308-0d34-0410-b5e6-96231b3b80d8

Check TRI->getReservedRegs because other allocators do it. Even though
it makes no sense for allocation_order iterators to visit reserved regs.
The inline spiller depends on AliasAnalysis.
Manage the Query state to avoid uninitialized or stale results.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118800 91177308-0d34-0410-b5e6-96231b3b80d8

Add comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118799 91177308-0d34-0410-b5e6-96231b3b80d8

Make AliasedSymbol able to handle MCTargetExpr. They can get here if
a weakref is used with a VariantKind.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118798 91177308-0d34-0410-b5e6-96231b3b80d8

add pr#

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118797 91177308-0d34-0410-b5e6-96231b3b80d8

Encoding for ARM LDRSH_POST.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118794 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the symbol index of weak references. Also make RecordRelocation a bit
easier to read by having const references to the symbol, aliased symbol and
renamed symbol.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118793 91177308-0d34-0410-b5e6-96231b3b80d8

Add brief doxygen comments for AliasResult enum values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118792 91177308-0d34-0410-b5e6-96231b3b80d8

Include ImmutablePass passes in -debug-pass=Arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118790 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the memmove->memcpy optimization from CodeGen. MemCpyOpt does this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118789 91177308-0d34-0410-b5e6-96231b3b80d8

Make Sink tbaa-aware.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118788 91177308-0d34-0410-b5e6-96231b3b80d8

It's safe to sink some instructions which are not safe to speculatively
execute. Make Sink's predicate more precise.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118787 91177308-0d34-0410-b5e6-96231b3b80d8

CMake: Add the new option "LLVM_LIT_ARGS".

Defaults:
if (MSVC OR XCODE): "-sv --no-progress-bar"
else: "-sv"

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118776 91177308-0d34-0410-b5e6-96231b3b80d8

Remove some explicit arguments to getELFSection. This is
a leftover from the removal of isExplicit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118774 91177308-0d34-0410-b5e6-96231b3b80d8

Encoding for ARM LDRSH and LDRSH_PRE. Cannonicalize operand names.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118767 91177308-0d34-0410-b5e6-96231b3b80d8

Fix encoding of Ra register for ARM smla* instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118761 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for specifying a PostEncoderMethod, which can perform post-processing after the automated encoding of an instruction.
Not yet used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118759 91177308-0d34-0410-b5e6-96231b3b80d8

ARM STRH encoding information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118757 91177308-0d34-0410-b5e6-96231b3b80d8

Add a testcase which demonstrates alias analysis pass precedence.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118755 91177308-0d34-0410-b5e6-96231b3b80d8

Delete SplittingSpiller. It was not being used by anyone, and it is being
superceded by SplitKit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118754 91177308-0d34-0410-b5e6-96231b3b80d8

It's not necessary to clear out the Size and TBAATag at each of
these points.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118752 91177308-0d34-0410-b5e6-96231b3b80d8

Set NonLocalDepInfo's Size field to UnknownSize when invalidating
it, so that it doesn't appear to be a known size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118748 91177308-0d34-0410-b5e6-96231b3b80d8

Insert two blank SlotIndexes between basic blocks instead of just one.

This is the first small step towards using closed intervals for liveness instead
of the half-open intervals we're using now.

We want to be able to distinguish between a SlotIndex that represents a variable
being live-out of a basic block, and an index representing a variable live-in to
its successor.

That requires two separate indexes between blocks. One for live-outs and one for
live-ins.

With this change, getMBBEndIdx(MBB).getPrevSlot() becomes stable so it stays
greater than any instructions inserted at the end of MBB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118747 91177308-0d34-0410-b5e6-96231b3b80d8

Document debuginfo-tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118746 91177308-0d34-0410-b5e6-96231b3b80d8

Delete unused function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118743 91177308-0d34-0410-b5e6-96231b3b80d8

No need to add liveness that's already there.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118742 91177308-0d34-0410-b5e6-96231b3b80d8

Hook up AliasAnalysis in InlineSpiller. This is used for rematerializing
constant loads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118741 91177308-0d34-0410-b5e6-96231b3b80d8

Move LDM predicate operand encoding into base clase. Add STM missing STM
encoding bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118738 91177308-0d34-0410-b5e6-96231b3b80d8

ARM LDM encoding for the mode (ia, ib, da, db) operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118736 91177308-0d34-0410-b5e6-96231b3b80d8

Factor some code into WriteSection.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118733 91177308-0d34-0410-b5e6-96231b3b80d8

Fix ARM encoding of non-return LDM instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118732 91177308-0d34-0410-b5e6-96231b3b80d8

Fix ARM encoding of LDM+Return instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118730 91177308-0d34-0410-b5e6-96231b3b80d8

When clearing a non-local pointer dependency cache entry, clear
the reverse map too. This fixes seflhost build errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118729 91177308-0d34-0410-b5e6-96231b3b80d8

Update the section index map after we add the medatada sections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118728 91177308-0d34-0410-b5e6-96231b3b80d8

Take care of special characters while creating named MDNode name to hold function specific local variable's info.
This fixes radar 8653152. I am checking in testcase as a separate check-in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118726 91177308-0d34-0410-b5e6-96231b3b80d8

Use SectionIndexMap in WriteSymbolTable to make it a little less brittle.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118725 91177308-0d34-0410-b5e6-96231b3b80d8

Factor out the code for computing an AliasAnalysis::Location
for a given instruction into a helper function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118723 91177308-0d34-0410-b5e6-96231b3b80d8

Factor some code into ComputeIndexMap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118722 91177308-0d34-0410-b5e6-96231b3b80d8

Fully invalidate cached results when a prior query's size or
type is insufficient for, or incompatible with, the current query.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118721 91177308-0d34-0410-b5e6-96231b3b80d8

Fix an issue where we tried to turn a v2f32 build_vector into a v4i32 build vector with 2 elts

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118720 91177308-0d34-0410-b5e6-96231b3b80d8

Reduce the maximum recursion depth, 5 seems pointlessly too much.
Probably it should just be 1, but compromise with 3.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118718 91177308-0d34-0410-b5e6-96231b3b80d8

Enhance GVN to do more precise alias queries for non-local memory
references. For example, this allows gvn to eliminate the load in
this example:

  void foo(int n, int* p, int *q) {
    p[0] = 0;
    p[1] = 1;
    if (n) {
      *q = p[0];
    }
  }

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118714 91177308-0d34-0410-b5e6-96231b3b80d8

Change the String<size> methods to take a fragment instead of a buffer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118709 91177308-0d34-0410-b5e6-96231b3b80d8

Basic rematerialization during splitting.

Whenever splitting wants to insert a copy, it checks if the value can be
rematerialized cheaply instead.

Missing features:
- Delete instructions when all uses have been rematerialized.
- Truncate live ranges to the remaining uses after rematerialization.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118702 91177308-0d34-0410-b5e6-96231b3b80d8

RABasic is nearly functionally complete. There are a few remaining
benchmarks hitting an assertion.
Adds LiveIntervalUnion::collectInterferingVRegs.
Fixes "late spilling" by checking for any unspillable live vregs among
all physReg aliases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118701 91177308-0d34-0410-b5e6-96231b3b80d8

Use MCSectionELF in places we know we have an ELF section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118699 91177308-0d34-0410-b5e6-96231b3b80d8

Use getValueOperand() and getPointerOperand() on load and store
instructions instead of hard-coding operand numbers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118698 91177308-0d34-0410-b5e6-96231b3b80d8

Rename AccessesArguments and AccessesArgumentsReadonly, and rewrite
their comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118696 91177308-0d34-0410-b5e6-96231b3b80d8