Fixed @ctor / @dtor the wrong way around in last commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102741 91177308-0d34-0410-b5e6-96231b3b80d8

Added a brief explanation of @llvm.global_{c,d}tors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102740 91177308-0d34-0410-b5e6-96231b3b80d8

Set isSigned to true when creating an all-ones integer constant, even
for unsigned purposes, so >64-bit integer values get a full all-ones
value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102739 91177308-0d34-0410-b5e6-96231b3b80d8

Silence compiler warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102734 91177308-0d34-0410-b5e6-96231b3b80d8

Add lint checks for invalid uses of memory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102733 91177308-0d34-0410-b5e6-96231b3b80d8

Add some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102731 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the -disable-16bit command-line option, which is now obsolete.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102730 91177308-0d34-0410-b5e6-96231b3b80d8

Don't use floating point in SimpleRegisterCoalescing.

Rounding differences causes tests to fail on Linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102729 91177308-0d34-0410-b5e6-96231b3b80d8

Properly escape edge source and destination labels.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102728 91177308-0d34-0410-b5e6-96231b3b80d8

Add -o /dev/null to some tests which don't care about their output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102722 91177308-0d34-0410-b5e6-96231b3b80d8

Apply a patch from Jan Sjodin to fix a compiler abort on vector
comparisons sign-extended to a different bitwidth than the
comparison operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102721 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102720 91177308-0d34-0410-b5e6-96231b3b80d8

Default OPTIMIZE_OPTION to -O2 on FreeBSD, at the request of the Clang/FreeBSD
folks. LLVM/Clang is miscompiled by the standard GCC at -O3.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102719 91177308-0d34-0410-b5e6-96231b3b80d8

SmallBitVector: Rework find_first/find_next and tweak test to test them (at least on 64 bit platforms).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102712 91177308-0d34-0410-b5e6-96231b3b80d8

Implement a read/write operator[] for SmallBitVector with a proxy class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102709 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure SmallBitVector actually uses the small case and fix latent bugs.

- We can't use PointerIntPair here since we require the discrimination bit to be in the LSB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102707 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102694 91177308-0d34-0410-b5e6-96231b3b80d8

Another sibcall bug. If caller and callee calling conventions differ, then it's only safe to do a tail call if the results are returned in the same way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102683 91177308-0d34-0410-b5e6-96231b3b80d8

Temporarily disable SelectionDAG kill flags, which are causing trouble.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102680 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the OProfileJITEventListener build after r101844 removed
MachineFunction::DefaultDebugLoc.  We now use the same technique as
DwarfDebug::beginFunction to find the starting line number for a
function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102679 91177308-0d34-0410-b5e6-96231b3b80d8

Set register kill flags on the SelectionDAG path, at least in the
easy cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102678 91177308-0d34-0410-b5e6-96231b3b80d8

Reject really weird coalescer case when trying to merge identical subregisters
of different register classes. e.g.

  %reg1048:3<def> = EXTRACT_SUBREG %RAX<kill>, 3

Where %reg1048 is a GR32 register. This is not impossible to handle, but it is
pretty hard and very rare.

This should unbreak the dragonegg builder.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102672 91177308-0d34-0410-b5e6-96231b3b80d8

The llc -f flag was removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102670 91177308-0d34-0410-b5e6-96231b3b80d8

Don't leave Base.FrameIndex uninitialized, so that it doesn't
print randomly in debug output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102668 91177308-0d34-0410-b5e6-96231b3b80d8

add some more (void)'s to prototypes for PR6961

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102667 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typos in assertion strings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102666 91177308-0d34-0410-b5e6-96231b3b80d8

Slightly verboser debug spew from coalescer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102663 91177308-0d34-0410-b5e6-96231b3b80d8

Missed earlier. This is part of previous check-in. (r102661 - refactor.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102662 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102661 91177308-0d34-0410-b5e6-96231b3b80d8

Make naked functions work on PPC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102657 91177308-0d34-0410-b5e6-96231b3b80d8

Print variable scope name in DEBUG_VALUE comment. Useful in some cases. e.g.
##DEBUG_VALUE: runOnMachineFunction:this <- RDI+0
##DEBUG_VALUE: runOnMachineFunction:fn <- RSI+0
##DEBUG_VALUE: DeadDefs <- undef ## SimpleRegisterCoalescing.cpp:2706
##DEBUG_VALUE: getRegInfo:this <- [%rsp+$56]+$0
##DEBUG_VALUE: getTarget:this <- [%rsp+$56]+$0

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102655 91177308-0d34-0410-b5e6-96231b3b80d8

Remove DBG_VALUE which reference dead stack slots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102654 91177308-0d34-0410-b5e6-96231b3b80d8

DO not push DBG_VALUE machine instructions for inlined fuction arguments in entry block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102653 91177308-0d34-0410-b5e6-96231b3b80d8

Add DenseMapInfo for int.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102652 91177308-0d34-0410-b5e6-96231b3b80d8

llc no longer requires the -f option to overwrite files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102651 91177308-0d34-0410-b5e6-96231b3b80d8

Don't remove libLTO.dylib if it's not being installed in Developer/usr/lib;
just leave it in Developer/usr/local/lib.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102646 91177308-0d34-0410-b5e6-96231b3b80d8

Elaborate on a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102637 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead option.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102621 91177308-0d34-0410-b5e6-96231b3b80d8

Verify metadata harder.  In particular, check that module
level metadata does not have any function local operands.
This would have caught the problem found in PR6112.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102620 91177308-0d34-0410-b5e6-96231b3b80d8

Fix comment typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102612 91177308-0d34-0410-b5e6-96231b3b80d8

Add comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102606 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR6910.

Limit alignment in SmallVector 8, otherwise GCC assumes 16 byte alignment.
opetaror new, and malloc only return 8-byte aligned memory on 32-bit Linux,
which cause a crash if code is compiled with -O3 (or -ftree-vectorize) and some
SmallVector code is vectorized.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102604 91177308-0d34-0410-b5e6-96231b3b80d8

Re-enable 102565 with fixes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102602 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102599 91177308-0d34-0410-b5e6-96231b3b80d8

Load folding tail call should not use ebp / rbp after it's popped. PEI
should use esp / rsp to reference frame instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102596 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for assemblers that don't support periods in a name

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102594 91177308-0d34-0410-b5e6-96231b3b80d8

Temporarily disable my changes to unbreak the build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102590 91177308-0d34-0410-b5e6-96231b3b80d8

Do not generate duplicate dbg_value instructions for function arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102585 91177308-0d34-0410-b5e6-96231b3b80d8

Fix missing #include.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102584 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid emitting a dbg_value machineinstr that's not going to be inserted into entry block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102581 91177308-0d34-0410-b5e6-96231b3b80d8

Frame index can be negative.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102577 91177308-0d34-0410-b5e6-96231b3b80d8

Check Reg against zero.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102573 91177308-0d34-0410-b5e6-96231b3b80d8

- Really preserve dbg_value instructions when the register is spilled.
- Also, update dbg_value is the value is being re-matted from a frame slot, e.g. fixed slots for arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102565 91177308-0d34-0410-b5e6-96231b3b80d8

tidy up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102558 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed the word sized Bit Scan Forward/Reverse instructions, they needed the
Operand size override prefix to be part of their records.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102556 91177308-0d34-0410-b5e6-96231b3b80d8

Replace r102368 with code that's less fragile. This creates DBG_VALUE instructions for function arguments early and insert them after instruction selection is done.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102554 91177308-0d34-0410-b5e6-96231b3b80d8

fix this to work with objdir != srcdir

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102547 91177308-0d34-0410-b5e6-96231b3b80d8

Fix comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102545 91177308-0d34-0410-b5e6-96231b3b80d8

Test for llvm-gcc checkin 102543.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102544 91177308-0d34-0410-b5e6-96231b3b80d8

Add an option to the Apple-style build to control whether libLTO.dylib should
be installed.  Disable it by default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102531 91177308-0d34-0410-b5e6-96231b3b80d8

Add sizes non-floating point versions for the eh sjlj intrinsic expansions.

rdar://7895451

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102526 91177308-0d34-0410-b5e6-96231b3b80d8

Update tests. Now DBG_VALUE instruction is created only if alloca corresponding to llvm.dbg.declare is missing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102524 91177308-0d34-0410-b5e6-96231b3b80d8

declare targets with (void) instead of () since this is a C header.
Patch by Lars R in PR6961.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102523 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR6112 - When globalopt (or any other pass) does RAUW(@G, %G),
metadata references in non-function-local MDNodes should drop to
null.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102519 91177308-0d34-0410-b5e6-96231b3b80d8

Pretty print DBG_VALUE machine instructions.
Before:
DBG_VALUE %RSI, 0, !-1; dbg:SimpleRegisterCoalescing.cpp:2707
Now:
DBG_VALUE %RSI, 0, !"this"; dbg:SimpleRegisterCoalescing.cpp:2707

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102518 91177308-0d34-0410-b5e6-96231b3b80d8

Rework global alignment computation again.  Now we do round up
alignment of globals to the preferred alignment, but only when
there is no section specified on the global (by far the common
case).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102515 91177308-0d34-0410-b5e6-96231b3b80d8

While lowering dbg_declare, emit DBG_VALUE machine instruction if alloca matching llvm.dbg.declare intrinsic is missing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102513 91177308-0d34-0410-b5e6-96231b3b80d8

Recompute kill flags from live intervals after coalescing instead of trying to
update them. Computing kill flags is notoriously difficult, and the coalescer
would get it wrong sometimes, and it would completely skip physical registers.

Now we simply remove kill flags based on the live intervals after coalescing.
This is a few percent slower, but now we get correct kill flags for physical
registers after coalescing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102510 91177308-0d34-0410-b5e6-96231b3b80d8

Teach X86FloatingPoint that a register can be killed multiple times by the same
instruction.

This instruction would crash the pass:

  INLINEASM <es:foo $0 $1>, 9, %FP0<kill>, 9, %FP0<kill>, 14, %EFLAGS<earlyclobber,def,dead>

Now it doesn't.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102509 91177308-0d34-0410-b5e6-96231b3b80d8

Undo most of my previous whitespace fix.  I think I like it better this way
after all.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102508 91177308-0d34-0410-b5e6-96231b3b80d8

Fix inconsistent use of HOSTS and TARGETS variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102505 91177308-0d34-0410-b5e6-96231b3b80d8

Fix whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102504 91177308-0d34-0410-b5e6-96231b3b80d8

Enable i16 to i32 promotion by default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102493 91177308-0d34-0410-b5e6-96231b3b80d8

Try operation promotion only if regular dag combine and target-specific ones failed to do anything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102492 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak the build. Only form shld / shrd after legalization.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102488 91177308-0d34-0410-b5e6-96231b3b80d8

Update tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102487 91177308-0d34-0410-b5e6-96231b3b80d8

Emit debug info for byval parameters.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102486 91177308-0d34-0410-b5e6-96231b3b80d8

Rather than having a ton of patterns for double shift instructions, e.g. SHLD16rrCL, just perform custom dag combine to form x86 specific dag so they match to the same pattern. This also makes sure later dag combine do not cause isel to miss them (e.g. promoting i16 to i32).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102485 91177308-0d34-0410-b5e6-96231b3b80d8

further simplify EmitAlignment by eliminating the
ForcedAlignBits argument, tweaking the single client of it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102484 91177308-0d34-0410-b5e6-96231b3b80d8

remove a dead argument to EmitAlignment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102483 91177308-0d34-0410-b5e6-96231b3b80d8

remove some default arguments to EmitAlignment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102482 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102481 91177308-0d34-0410-b5e6-96231b3b80d8

Rewrite the section on trap values to contain a generic description
of dependence and define trap values in terms of dependence, instead
of trying to cover the concept with a flurry of ad-hoc rules.

The dependence model isn't complete yet, but it's already much more
rigorous than the description it replaces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102479 91177308-0d34-0410-b5e6-96231b3b80d8

Fix spelling errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102478 91177308-0d34-0410-b5e6-96231b3b80d8

Tweak x86 INC/DEC generation to look for CopyToReg or SETCC.  Radar 7866163.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102477 91177308-0d34-0410-b5e6-96231b3b80d8

further clarify alignment of globals, fix instcombine
to not increase the alignment of globals with an assigned
alignment and section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102476 91177308-0d34-0410-b5e6-96231b3b80d8

improve the global variable alignment description.
it is not generally valid for targets to overalign
them when an alignment is specified.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102474 91177308-0d34-0410-b5e6-96231b3b80d8

Use MachineOperand::is* predicates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102472 91177308-0d34-0410-b5e6-96231b3b80d8

Use isReg(), isImm() and isFPImm().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102470 91177308-0d34-0410-b5e6-96231b3b80d8

Check operand type first.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102468 91177308-0d34-0410-b5e6-96231b3b80d8

Fix obvious typos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102467 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore DBG_VALUE instructions that points to undef values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102463 91177308-0d34-0410-b5e6-96231b3b80d8

SRA promotion is also not free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102456 91177308-0d34-0410-b5e6-96231b3b80d8

- When legal, promote a load to zextload rather than ext load.
- Catch more further dag combine opportunities as result of operand promotion, e.g. (i32 anyext (i16 trunc (i32 x))) -> (i32 x)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102455 91177308-0d34-0410-b5e6-96231b3b80d8

Identify when a lexical scope is split in to multiple instruction ranges. Emit such ranges using DW_AT_ranges.
This patch fixes bug (PR6894) introduced by previous version of this patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102454 91177308-0d34-0410-b5e6-96231b3b80d8

Do not count kill, implicit_def instructions as printed instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102453 91177308-0d34-0410-b5e6-96231b3b80d8

round zero-byte .zerofill directives up to 1 byte.  This
should fix some "g++.dg-struct-layout-1" failures,
rdar://7886017

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102421 91177308-0d34-0410-b5e6-96231b3b80d8

fix wordo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102418 91177308-0d34-0410-b5e6-96231b3b80d8

remove some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102417 91177308-0d34-0410-b5e6-96231b3b80d8

Revert a small part of 102372; this fixes at least one
of the dbg testsuite regressions.  I don't think this is
really the right fix; this change exposed an existing problem
upstream somewhere.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102410 91177308-0d34-0410-b5e6-96231b3b80d8