Stop the iterator in ValueLiveAt from potentially running off the end of the interval.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85599 91177308-0d34-0410-b5e6-96231b3b80d8

This fixes functions like

void f (int a1, int a2, int a3, int a4, int a5,...)

In ARMTargetLowering::LowerFormalArguments if the function has 4 or
more regular arguments we used to set VarArgsFrameIndex using an
offset of 0, which is only correct if the function has exactly 4
regular arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85590 91177308-0d34-0410-b5e6-96231b3b80d8

CMake: install .def files from source `include/llvm' directory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85587 91177308-0d34-0410-b5e6-96231b3b80d8

Rather than having llvm-gcc changing the meaning of OptimizeSize, just make sure loop unswitch is conservative when optimization level is < 3.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85581 91177308-0d34-0410-b5e6-96231b3b80d8

Add ARM codegen for indirect branches.
clang/test/CodeGen/indirect-goto.c runs! (unoptimized)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85577 91177308-0d34-0410-b5e6-96231b3b80d8

Most stack straces don't need 3 digits worth of levels.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85575 91177308-0d34-0410-b5e6-96231b3b80d8

Don't delete blocks which have their address taken.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85572 91177308-0d34-0410-b5e6-96231b3b80d8

Mention if a block has its address taken in debug output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85571 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify this code and avoid an extra space character in the output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85568 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for BlockAddress static initializers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85562 91177308-0d34-0410-b5e6-96231b3b80d8

Add a FIXME comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85559 91177308-0d34-0410-b5e6-96231b3b80d8

Add some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85558 91177308-0d34-0410-b5e6-96231b3b80d8

Initial x86 support for BlockAddresses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85557 91177308-0d34-0410-b5e6-96231b3b80d8

Initial target-independent CodeGen support for BlockAddresses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85556 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85551 91177308-0d34-0410-b5e6-96231b3b80d8

Add a BlockAddress MachineOperand kind.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85549 91177308-0d34-0410-b5e6-96231b3b80d8

Add svn:ignore properties.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85548 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a redundant copy constructor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85547 91177308-0d34-0410-b5e6-96231b3b80d8

Dial back the realignment a bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85546 91177308-0d34-0410-b5e6-96231b3b80d8

Between scheduling regions, correctly maintain anti-dep breaking state so that we don't incorrectly rename registers that span these regions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85537 91177308-0d34-0410-b5e6-96231b3b80d8

Remove some unnecessary spaces in debug output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85536 91177308-0d34-0410-b5e6-96231b3b80d8

Move some code from being emitted as boilerplate duplicated in every
*ISelDAGToDAG.cpp to being regular code in SelectionDAGISel.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85530 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a couple of bugs in aggressive anti-dep breaking.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85522 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor complicated predicate into a separate function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85519 91177308-0d34-0410-b5e6-96231b3b80d8

First bitcase use may not lead to a dbg.declare intrinsic. Iterate uses until one find's dbg.declare intrinsic.
Patch by Sunae Seo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85518 91177308-0d34-0410-b5e6-96231b3b80d8

Rename usesCustomDAGSchedInserter to usesCustomInserter, and update a
bunch of associated comments, because it doesn't have anything to do
with DAGs or scheduling. This is another step in decoupling MachineInstr
emitting from scheduling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85517 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor the code for unfolding a load into a separate function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85515 91177308-0d34-0410-b5e6-96231b3b80d8

Reapply r85338.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85514 91177308-0d34-0410-b5e6-96231b3b80d8

Fix MSVC build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85505 91177308-0d34-0410-b5e6-96231b3b80d8

Apply some cleanups. No functionality changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85498 91177308-0d34-0410-b5e6-96231b3b80d8

add sanity check for indbr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85496 91177308-0d34-0410-b5e6-96231b3b80d8

just for the hell of it, allow globalopt to statically evaluate
static constructors with indirect gotos :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85495 91177308-0d34-0410-b5e6-96231b3b80d8

add interpreter support for indirect goto / blockaddress.  The interpreter
now correctly runs clang's test/CodeGen/indirect-goto.c.  The JIT will abort
on it until someone feels compelled to implement this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85488 91177308-0d34-0410-b5e6-96231b3b80d8

add newline to make cl.exe happy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85483 91177308-0d34-0410-b5e6-96231b3b80d8

fix 80-col.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85480 91177308-0d34-0410-b5e6-96231b3b80d8

greatly improve the LLVM IR bitcode encoding documentation,
patch by Peter Housel!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85479 91177308-0d34-0410-b5e6-96231b3b80d8

Explicitly convert to double to suppress Visual C++ 2008 build error C2668 pow is ambiguous call to overloaded function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85478 91177308-0d34-0410-b5e6-96231b3b80d8

To get more thorough testing from llc-beta nightly runs, do dynamic stack
realignment regardless of whether it's strictly necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85476 91177308-0d34-0410-b5e6-96231b3b80d8

When the function is doing dynamic stack realignment, the spill slot will be
indexed via the stack pointer, even if a frame pointer is present. Update the
heuristic to place it nearest the stack pointer in that case, rather than
nearest the frame pointer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85474 91177308-0d34-0410-b5e6-96231b3b80d8

Sorry to break the build.
I was trying to check the WIP file to some local repository, but ended up
checking in the llvm repository.  Oops!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85470 91177308-0d34-0410-b5e6-96231b3b80d8

Minor tweak to forgo the the curly braces for most case blocks, except when
declaring local variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85467 91177308-0d34-0410-b5e6-96231b3b80d8

teach various passes about blockaddress.  We no longer
crash on any clang tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85465 91177308-0d34-0410-b5e6-96231b3b80d8

When there is a 2-instruction spill sequence, record
the second (store) instruction in SpillSlotToUsesMap
consistently.  I don't think this matters functionally,
but it's cleaner and Evan wants it this way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85463 91177308-0d34-0410-b5e6-96231b3b80d8

Don't put in these EH changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85460 91177308-0d34-0410-b5e6-96231b3b80d8

A switch-on-string-literal construct that is a nice alternative to
cascading "ifs" of strcmps/memcmps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85459 91177308-0d34-0410-b5e6-96231b3b80d8

teach ValueMapper about BlockAddress', making bugpoint a lot more useful.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85458 91177308-0d34-0410-b5e6-96231b3b80d8

unindent massive blocks, no functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85457 91177308-0d34-0410-b5e6-96231b3b80d8

Reverting r85338 for now. It's causing a bootstrap failure on PPC darwin9.

--- Reverse-merging r85338 into '.':
U    lib/CodeGen/SimpleRegisterCoalescing.cpp
U    lib/CodeGen/SimpleRegisterCoalescing.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85454 91177308-0d34-0410-b5e6-96231b3b80d8

Add indirectbr and blockaddress to the vim syntax highlighting file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85451 91177308-0d34-0410-b5e6-96231b3b80d8

Add a hasAddressTaken for BasicBlock.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85449 91177308-0d34-0410-b5e6-96231b3b80d8

add IRBuilder support for IndirectBr

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85445 91177308-0d34-0410-b5e6-96231b3b80d8

Reimplement BranchFolding change to avoid tail merging for a 1 instruction
common tail, except when the OptimizeForSize function attribute is present.
Radar 7338114.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85441 91177308-0d34-0410-b5e6-96231b3b80d8

When we generate spill code, then decide we don't need
to spill after all, we weren't handling 2-instruction
spill sequences correctly (PPC Altivec).  We need to
remove the store in this case.  Removing the other
instruction(s) would be goodness but is not needed for
correctness, and isn't done here.  7331562.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85437 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure we return the right sized type here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85436 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r85346 change to control tail merging by CodeGenOpt::Level.
I'm going to redo this using the OptimizeForSize function attribute.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85426 91177308-0d34-0410-b5e6-96231b3b80d8

Extend getMallocArraySize() to determine the array size if the malloc argument is:
ArraySize * ElementSize
ElementSize * ArraySize
ArraySize << log2(ElementSize)
ElementSize << log2(ArraySize)

Refactor isArrayMallocHelper and delete isSafeToGetMallocArraySize, so that there is only 1 copy of the malloc array determining logic.
Update users of getMallocArraySize() to not bother calling isArrayMalloc() as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85421 91177308-0d34-0410-b5e6-96231b3b80d8

Fix to pass options from Gold plugin to LTO codegen

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85419 91177308-0d34-0410-b5e6-96231b3b80d8

Teach cmake that mk[sd]temp is defined in stdlib.h on some systems.
This fixes parallel build with clang on glibc platforms.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85414 91177308-0d34-0410-b5e6-96231b3b80d8

Make AntiDepReg.h internal.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85412 91177308-0d34-0410-b5e6-96231b3b80d8

Add a Thumb BRIND pattern.  Change the ARM BRIND assembly to separate the
opcode and operand with a tab.  Check for these instructions in the usual
places.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85411 91177308-0d34-0410-b5e6-96231b3b80d8

fconsts and fconstd are obviously re-materializable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85410 91177308-0d34-0410-b5e6-96231b3b80d8

Cleanup now that frame index scavenging via post-pass is working for ARM and Thumb2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85406 91177308-0d34-0410-b5e6-96231b3b80d8

llvm.dbg.global_variables do not exist anymore.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85402 91177308-0d34-0410-b5e6-96231b3b80d8

add a new 'SetCurrentDebugType' API (requested by Andrew Haley for JIT
stuff) to programmatically control the current debug flavor.  While
I'm at it, doxygenate Debug.h and clean it up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85395 91177308-0d34-0410-b5e6-96231b3b80d8

Don't call SDNode::isPredecessorOf when it isn't necessary. If the load's
chains have no users, they can't be predecessors of the condition.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85394 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify this code: if the unfolded load can't be hoisted, just delete
the new instructions and leave the old one in place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85393 91177308-0d34-0410-b5e6-96231b3b80d8

No newline at end of file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85390 91177308-0d34-0410-b5e6-96231b3b80d8

Update CMake file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85389 91177308-0d34-0410-b5e6-96231b3b80d8

use metavariable <result> instead of SSA name %result for consistency

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85388 91177308-0d34-0410-b5e6-96231b3b80d8

ooops, SSA name should not be part of the link

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85387 91177308-0d34-0410-b5e6-96231b3b80d8

advertise new syntax for unnamed instructions
and eliminate confusing double-use of SSA names
(work in progress)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85385 91177308-0d34-0410-b5e6-96231b3b80d8

Treat lifetime begin/end markers as allocations/frees respectively for the
purposes for GVN/DSE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85383 91177308-0d34-0410-b5e6-96231b3b80d8

Add ABCD, a generalized implementation of the Elimination of Array Bounds
Checks on Demand algorithm which looks at arbitrary branches instead of loop
iterations. This is GSoC work by Andre Tavares with only editorial changes
applied!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85382 91177308-0d34-0410-b5e6-96231b3b80d8

Give ARMISD::EH_SJLJ_LONGJMP and EH_SJLJ_SETJMP names.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85381 91177308-0d34-0410-b5e6-96231b3b80d8

Be more careful about invariance reasoning on "store" queries.  Stores still need
to depend on Ref and ModRef calls within the invariant region.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85380 91177308-0d34-0410-b5e6-96231b3b80d8

X86 palignr intrinsics immediate field is in bits. ISel must transform it into bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85379 91177308-0d34-0410-b5e6-96231b3b80d8

Add trivial support for the invariance intrinsics to memdep.  This logic is
purely local for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85378 91177308-0d34-0410-b5e6-96231b3b80d8

add bitcode reader support for blockaddress.  We can now fully
round trip blockaddress through .ll and .bc files, so add a testcase.

There are still a bunch of places in the optimizer and other places
that need to be updated to work with these constructs, but at least
the basics are in now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85377 91177308-0d34-0410-b5e6-96231b3b80d8

bitcode writer support for blockaddress.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85376 91177308-0d34-0410-b5e6-96231b3b80d8

Previously, all operands to Constant were themselves constant.
In the new world order, BlockAddress can have a BasicBlock operand.
This doesn't permute much, because if you have a ConstantExpr (or
anything more specific than Constant) we still know the operand has
to be a Constant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85375 91177308-0d34-0410-b5e6-96231b3b80d8

doc bug spotted by apinski

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85372 91177308-0d34-0410-b5e6-96231b3b80d8

'static const  void *X = &&y' can only be put in the
readonly section if a reference to the containing function
is valid in the readonly section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85370 91177308-0d34-0410-b5e6-96231b3b80d8

Rewrite SelectionDAG::isPredecessorOf to be iterative instead of
recursive to avoid consuming extraordinary amounts of stack space
when processing tall graphs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85369 91177308-0d34-0410-b5e6-96231b3b80d8

full asmparser support for blockaddress.  We can now do:
$ llvm-as foo.ll -d -disable-output

which reads and prints the .ll file.  BC encoding is the
next project.  Testcase will go in once that works.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85368 91177308-0d34-0410-b5e6-96231b3b80d8

asmprinter support for BlockAddress.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85367 91177308-0d34-0410-b5e6-96231b3b80d8

when we tear down a module, we need to be careful to
zap BlockAddress values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85366 91177308-0d34-0410-b5e6-96231b3b80d8

basic blocks can now have non-instruction users.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85365 91177308-0d34-0410-b5e6-96231b3b80d8

Teach MachineLICM to unfold loads from constant memory from
otherwise unhoistable instructions in order to allow the loads
to be hoisted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85364 91177308-0d34-0410-b5e6-96231b3b80d8

Use fconsts and fconstd to materialize small fp constants.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85362 91177308-0d34-0410-b5e6-96231b3b80d8

Add a second ValueType argument to isFPImmLegal.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85361 91177308-0d34-0410-b5e6-96231b3b80d8

Mark dead physregdefs dead immediately. This helps MachineSink and
MachineLICM and other things which run before LiveVariables is run.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85360 91177308-0d34-0410-b5e6-96231b3b80d8

Allow constants of different types to share constant pool entries
if they have compatible encodings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85359 91177308-0d34-0410-b5e6-96231b3b80d8

Remove getIEEEFloatParts and getIEEEDoubleParts. They are not needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85358 91177308-0d34-0410-b5e6-96231b3b80d8

Update SystemZ to use PSW following the way x86 uses EFLAGS. Besides
eliminating a use of MVT::Flag, this is needed for an upcoming CodeGen
change.

This unfortunately requires SystemZ to switch to the list-burr
scheduler, in order to handle the physreg defs properly, however
that's what LLVM has available at this time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85357 91177308-0d34-0410-b5e6-96231b3b80d8

Add an indirect branch pattern for ARM.  Testcase will be coming soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85355 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the ModuleDeletion test on PPC and ARM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85352 91177308-0d34-0410-b5e6-96231b3b80d8

rename indbr -> indirectbr to appease the residents of #llvm.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85351 91177308-0d34-0410-b5e6-96231b3b80d8

IR support for the new BlockAddress constant kind.  This is
untested and there is no way to use it, next up: doing battle
with asmparser.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85349 91177308-0d34-0410-b5e6-96231b3b80d8

Record CodeGen optimization level in the BranchFolding pass so that we can
use it to control tail merging when there is a tradeoff between performance
and code size.  When there is only 1 instruction in the common tail, we have
been merging.  That can be good for code size but is a definite loss for
performance.  Now we will avoid tail merging in that case when the
optimization level is "Aggressive", i.e., "-O3".  Radar 7338114.

Since the IfConversion pass invokes BranchFolding, it too needs to know
the optimization level.  Note that I removed the RegisterPass instantiation
for IfConversion because it required a default constructor.  If someone
wants to keep that for some reason, we can add a default constructor with
a hard-wired optimization level.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85346 91177308-0d34-0410-b5e6-96231b3b80d8

Rename lib/VMCore/ConstantsContext.h:ValueMap<> to ConstantUniqueMap<> to avoid
colliding with llvm/ADT/ValueMap.h:ValueMap<>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85344 91177308-0d34-0410-b5e6-96231b3b80d8