Rewrite 73900 per Duncan's suggestion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74082 91177308-0d34-0410-b5e6-96231b3b80d8

We decided to not worry about Atoms for now, it should be straightforward to
reintroduce them later.

Also, don't require MCSection* when creating a symbol.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74081 91177308-0d34-0410-b5e6-96231b3b80d8

MCStreamer: Add a few more "symbol attributes".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74077 91177308-0d34-0410-b5e6-96231b3b80d8

MCStreamer: Test printing values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74076 91177308-0d34-0410-b5e6-96231b3b80d8

Minor whitespace cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74074 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify [su]max(MAX, n) to MAX. This comes up in loop tripcount
computations in loops with multiple exits.

Adjust the testcase for PR4436 so that the relevant portion isn't
optimized away.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74073 91177308-0d34-0410-b5e6-96231b3b80d8

When inserting code into a loop preheader, insert it before the
terminator, instead of after the last phi. This fixes a bug
exposed by ScalarEvolution analyzing more kinds of loops.
This fixes PR4436.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74072 91177308-0d34-0410-b5e6-96231b3b80d8

Add new files to cmake list.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74071 91177308-0d34-0410-b5e6-96231b3b80d8

Start sketching 2.6 release notes.  This provides a
place to note major API changes (I've noted the
getABITypeSize -> getAllocSize change).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74070 91177308-0d34-0410-b5e6-96231b3b80d8

Move thumb and thumb2 tests into separate directories.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74068 91177308-0d34-0410-b5e6-96231b3b80d8

factor some code better.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74067 91177308-0d34-0410-b5e6-96231b3b80d8

wire up support for MCContext/MCStreamer in -experimental-asm-printer mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74066 91177308-0d34-0410-b5e6-96231b3b80d8

remove dead makefile flags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74065 91177308-0d34-0410-b5e6-96231b3b80d8

remove dead makefile flags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74064 91177308-0d34-0410-b5e6-96231b3b80d8

implement a bunch of synonyms for section switching.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74062 91177308-0d34-0410-b5e6-96231b3b80d8

Delete some orphaned comments, fix some 80-column violations,
and tidy up a few other formatting issues.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74060 91177308-0d34-0410-b5e6-96231b3b80d8

Remove an obsolete comment and fix some 80-column violations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74059 91177308-0d34-0410-b5e6-96231b3b80d8

add support for parsing and emitting .section directives.  We can now parse
things like:
.section __TEXT,__cstring,cstring_literals

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74058 91177308-0d34-0410-b5e6-96231b3b80d8

add trivial support for passing label definitions through the MCStreamer.

This is suboptimal in several aspects, see the commented out assertion.
I need to talk to Daniel about this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74057 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed a bug in LiveInterval scaling (failure to scale VNI defs correctly), removed old TODO comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74054 91177308-0d34-0410-b5e6-96231b3b80d8

Fix support for inline asm input / output operand tying when operand spans across multiple registers (e.g. two i64 operands in 32-bit mode).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74053 91177308-0d34-0410-b5e6-96231b3b80d8

Add a testcase demoing some of ScalarEvolution's new trip count logic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74049 91177308-0d34-0410-b5e6-96231b3b80d8

Extend ScalarEvolution's multiple-exit support to compute exact
trip counts in more cases.

Generalize ScalarEvolution's isLoopGuardedByCond code to recognize
And and Or conditions, splitting the code out into an
isNecessaryCond helper function so that it can evaluate Ands and Ors
recursively, and make SCEVExpander be much more aggressive about
hoisting instructions out of loops.

test/CodeGen/X86/pr3495.ll has an additional instruction now, but
it appears to be due to an arbitrary register allocation difference.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74048 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak build on Linux by removing Darwinism.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74046 91177308-0d34-0410-b5e6-96231b3b80d8

Teach GetMinSignBits about SCEVAddExprs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74045 91177308-0d34-0410-b5e6-96231b3b80d8

Start MCAsmStreamer implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74044 91177308-0d34-0410-b5e6-96231b3b80d8

Revert this accidental commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74042 91177308-0d34-0410-b5e6-96231b3b80d8

Move the special cases for constants out of getUnknown and into
createSCEV. Also, recognize UndefValue in createSCEV.

Change getIntegerSCEV's comment to avoid mentioning FP types,
and re-implement it in terms of getConstant instead of getUnknown.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74041 91177308-0d34-0410-b5e6-96231b3b80d8

create an MCStreamer and provide it to AsmParser.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74039 91177308-0d34-0410-b5e6-96231b3b80d8

stub out a trivial constructor method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74038 91177308-0d34-0410-b5e6-96231b3b80d8

Use ScalarEvolution::getConstant instead of getUnknown to create
SCEVConstants. This cleanup is a step toward letting getUnknown
be simpler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74037 91177308-0d34-0410-b5e6-96231b3b80d8

make the lexer unique strings it lexes instead of passing them back as
std::strings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74036 91177308-0d34-0410-b5e6-96231b3b80d8

Include the maximum trip count expression in ScalarEvolution's print output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74035 91177308-0d34-0410-b5e6-96231b3b80d8

Add an isAllOnesValue utility function, similar to isZero and isOne.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74032 91177308-0d34-0410-b5e6-96231b3b80d8

Don't emit a redundant BitCastInst if the value to be defined in the
preheader is already an instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74031 91177308-0d34-0410-b5e6-96231b3b80d8

Guard the listeners list.  Unfortunately, this requires a real static rather
than a managed static because other managed statics can (and do) access this
list in their destructors.  Yes, I know it's horrible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74029 91177308-0d34-0410-b5e6-96231b3b80d8

Provide InitializeAllTargets and InitializeNativeTarget functions in the
C bindings.  Change all the backend "Initialize" functions to have C linkage.
Change the "llvm/Config/Targets.def" header to use C-style comments to avoid
compile warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74026 91177308-0d34-0410-b5e6-96231b3b80d8

Update for MCImm -> MCValue rename.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74024 91177308-0d34-0410-b5e6-96231b3b80d8

rename MCImm ->MCValue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74023 91177308-0d34-0410-b5e6-96231b3b80d8

Test commit: fixed spacing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74022 91177308-0d34-0410-b5e6-96231b3b80d8

Add comments for the MCStreamer interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74019 91177308-0d34-0410-b5e6-96231b3b80d8

It is not a good idea to have data member's name match argument's name. In fact, it is a simple receipe to waste an hour or so.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74018 91177308-0d34-0410-b5e6-96231b3b80d8

Use getReturnTypeName() to print return type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74017 91177308-0d34-0410-b5e6-96231b3b80d8

upgrade

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74016 91177308-0d34-0410-b5e6-96231b3b80d8

Add DISubprogram::getReturnTypeName()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74015 91177308-0d34-0410-b5e6-96231b3b80d8

Start flushing out MCContext.
 - Lives inside new library lib/MC (LLVMMC.a)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74013 91177308-0d34-0410-b5e6-96231b3b80d8

Set svn:ignore for {llvm/Config/AsmPrinters,Targets}.def

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74010 91177308-0d34-0410-b5e6-96231b3b80d8

Use atomic operations when accessing statistics, and make the lazy initialization of statistics actually threadsafe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74005 91177308-0d34-0410-b5e6-96231b3b80d8

Add atomic multiply and divide operations, built on top of CompareAndSwap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74004 91177308-0d34-0410-b5e6-96231b3b80d8

Reinstate target dependencies on Table_gen targets in CMake

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74003 91177308-0d34-0410-b5e6-96231b3b80d8

Make timers threadsafe again.  This isn't quite as nice as I'd hoped (it uses locking rather than atomic arithmetic),
but should work on all the platforms we care about.

I might revisit this if a totally awesome way to do it occurs to me.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74002 91177308-0d34-0410-b5e6-96231b3b80d8

Temporary copy-pasto to make examples compile.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74001 91177308-0d34-0410-b5e6-96231b3b80d8

Make llvmc work again.

Chris recently broke llvmc with his Makefile changes (r75379). That patch made
the global change .o -> .a, which caused built-in llvmc plugins to stop working
since plugin initialization in llvmc is based on static variables not referenced
from the main executable. This patch implements auto-generated forced references
to the plugin libraries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74000 91177308-0d34-0410-b5e6-96231b3b80d8

Typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73999 91177308-0d34-0410-b5e6-96231b3b80d8

A little bit nicer formatting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73998 91177308-0d34-0410-b5e6-96231b3b80d8

Typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73997 91177308-0d34-0410-b5e6-96231b3b80d8

Start sketching MCStreamer interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73994 91177308-0d34-0410-b5e6-96231b3b80d8

Revert my last series of commits related to Timer and 64-bit atomics.  Not all the targets
we care about are capable of supporting it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73993 91177308-0d34-0410-b5e6-96231b3b80d8

Add include file to get the type for in64_t.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73991 91177308-0d34-0410-b5e6-96231b3b80d8

Test instructions operands were printed in the wrong order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73990 91177308-0d34-0410-b5e6-96231b3b80d8

"The MMX_MASKMOVQ and MMX_MASKMOVQ64 instructions are labeled as MRMDestMem
instructions, which implies that there is an explicit memory operand.  There is
(however) no explicit memory operand; although this is a store, the only memory
operand is implicit, indicated by DS:EDI.  This causes the table-generation code
for the disassembler to report an error."

Patch by Sean Callanan!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73989 91177308-0d34-0410-b5e6-96231b3b80d8

Switched size_t to int64_t to prevent type mismatch in call to max.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73988 91177308-0d34-0410-b5e6-96231b3b80d8

Proper patterns for thumb2 shift and rotate instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73987 91177308-0d34-0410-b5e6-96231b3b80d8

Code clean up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73986 91177308-0d34-0410-b5e6-96231b3b80d8

Add IsThumb1Only to most 16-bit thumb instructions since we want to isel 32-bit instructions when they are available.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73985 91177308-0d34-0410-b5e6-96231b3b80d8

add a simple MCImm class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73984 91177308-0d34-0410-b5e6-96231b3b80d8

The correct values here (as defined by gcc-4.2) are
different for ppc; add another version of the test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73983 91177308-0d34-0410-b5e6-96231b3b80d8

refactor a bunch of X86 specific stuff out to its own file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73982 91177308-0d34-0410-b5e6-96231b3b80d8

This test only works on ppc32 if some optimization is done before
generating LLVM IR; it is correct in the code as written
to use 8-byte-aligned operations to copy Key in bar.  Formerly
the gcc inliner was run, now it isn't.  I don't think it's
possible to preserve this as a pure FE test.  Adding -O2 lets
the llvm optimizers get rid of the 8-byte-aligned stores, at least.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73981 91177308-0d34-0410-b5e6-96231b3b80d8

Atomic ops that do arithmetic use signed arithmetic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73980 91177308-0d34-0410-b5e6-96231b3b80d8

CMake: remove support for llvm-config-generated dependencies in the build

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73979 91177308-0d34-0410-b5e6-96231b3b80d8

Actually, these need to be signed integers, not unsigned.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73978 91177308-0d34-0410-b5e6-96231b3b80d8

Rename SelectShifterOperand to SelectThumb2ShifterOperandReg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73975 91177308-0d34-0410-b5e6-96231b3b80d8

Use 64-bit integer counters for tracking time, rather than doubles.  This will be more atomic op friendly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73974 91177308-0d34-0410-b5e6-96231b3b80d8

See test.  Judging from PR 1278, at the time the test was committed, the
generated code was apparently doing stores directly into the return value
aggregate; now, it's doing a copy from a compiler-generated static object.
That object is initialized using [4 x i8] which breaks the test.  I believe
this change preserves the original point of the test.

Of course it would be better for the code to do stores directly into the
return aggregate, but that is not what happens at -O0; the llvm optimizers
seem to do that on x86 but not on ppc32, possibly because of the explicit
padding (which is unavoidable).  I think it must have been being done by
a gcc optimizer pass before.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73972 91177308-0d34-0410-b5e6-96231b3b80d8

Label the existing atomic functions as 32-bit specific, and add a 64-bit one that will be useful in
the near future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73971 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate some unused code in CMa'e add_llvm_target. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73970 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate object-relinking support from CMake. Fixes PR 4429 and
cleans up the CMake-based build system a bit. Started by a patch from
Xerxes Rånby.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73969 91177308-0d34-0410-b5e6-96231b3b80d8

Obvious typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73967 91177308-0d34-0410-b5e6-96231b3b80d8

add an accessor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73966 91177308-0d34-0410-b5e6-96231b3b80d8

Initial Thumb2 support. Majority of the work is done by David Goodwin. There are
also some contribution from Jim Grosbach, Bob Wilson, and Evan Cheng.

I've done my best to consolidate the patches with those that were done by
Viktor Kutuzov and Anton Korzh from Access Softek, Inc. Let me know if missed
anything. I've completely reorganized the thumb2 td file, made more extensive
uses of multiclass, etc.

Test cases will be contributed later after I re-organize what's in svn first.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73965 91177308-0d34-0410-b5e6-96231b3b80d8

Add an atomic add operation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73964 91177308-0d34-0410-b5e6-96231b3b80d8

Make the lazy initialization of DefaultTimerGroup threadsafe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73963 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate configure script

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73962 91177308-0d34-0410-b5e6-96231b3b80d8

Work around build problem with OpenJDK, which defines X86 as a
macro. Fixes PR 4427. Patch by Xerxes Rånby!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73961 91177308-0d34-0410-b5e6-96231b3b80d8

Add myself to the list.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73959 91177308-0d34-0410-b5e6-96231b3b80d8

Revert r73923, which broke clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73957 91177308-0d34-0410-b5e6-96231b3b80d8

Fold the add (ptr, offset) into ptr[offset] only if the offset is small enough. movwi and moviw allow value of 5-bits only (i.e. 32).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73953 91177308-0d34-0410-b5e6-96231b3b80d8

implement a trivial binary expression parser, we can now parse all of 176.gcc.llc.s

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73950 91177308-0d34-0410-b5e6-96231b3b80d8

Minor reorg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73948 91177308-0d34-0410-b5e6-96231b3b80d8

Replace isTwoAddress with operand constraint.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73947 91177308-0d34-0410-b5e6-96231b3b80d8

Use a default alignment for data and bss sections.
Only pad when the section size > 0 and move the code that deals
with globals initializers to a place we know for sure the global
is initialized.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73944 91177308-0d34-0410-b5e6-96231b3b80d8

get a definition of strull on windows, thanks to Howard Su.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73929 91177308-0d34-0410-b5e6-96231b3b80d8

Guard the layout info object.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73928 91177308-0d34-0410-b5e6-96231b3b80d8

Guard the plugin loader.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73925 91177308-0d34-0410-b5e6-96231b3b80d8

Add guards around timer groups, which can be shared.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73923 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug in the trip-count computation with And/Or. If either of the
sides is CouldNotCompute, the resulting exact count must be CouldNotCompute.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73920 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for ARM's Advanced SIMD (NEON) instruction set.
This is still a work in progress but most of the NEON instruction set
is supported.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73919 91177308-0d34-0410-b5e6-96231b3b80d8

Guard the statistics table.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73916 91177308-0d34-0410-b5e6-96231b3b80d8

Guard the global annotation tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73913 91177308-0d34-0410-b5e6-96231b3b80d8