Recover nestedloop regression reported by nightly tester.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51110 91177308-0d34-0410-b5e6-96231b3b80d8

Check if llvm-gcc is available before running tests. Patch by Matthijs Kooijman!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51108 91177308-0d34-0410-b5e6-96231b3b80d8

Detabification. Fixed indentation and spacing.
Changed cout to DOUT, and TODOs to FIXMEs.
Other changes as per coding conventions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51105 91177308-0d34-0410-b5e6-96231b3b80d8

Do not generate by TableGen the hard-coded standard, target-independent part of
DAG instruction selectors. Introudce a dedicated header file for this part:
include/llvm/CodeGen/DAGISelHeader.h

TableGen now only generates the include preprocessor directive to include this
new header.

This is a preparation for supporting multiple implementations of instruction
selectors in the future.

Reviewed and approved by Evan and Dan.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51102 91177308-0d34-0410-b5e6-96231b3b80d8

Upgrading clang VC++ solution to VC++ express 2008.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51100 91177308-0d34-0410-b5e6-96231b3b80d8

Make this test pass on x86-32 linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51099 91177308-0d34-0410-b5e6-96231b3b80d8

Adding missing files to Transforms and VMCore VC++ projects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51098 91177308-0d34-0410-b5e6-96231b3b80d8

Add documentation for tail call optimization to CodeGenerator.html. Add a link
referring to it to LangRef.html.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51097 91177308-0d34-0410-b5e6-96231b3b80d8

Added configure switches for PIC16 in configure.ac.
Regenerated configure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51096 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo in ParameterAttribute fields usage. Add an include
to make the Cpp backend output compilable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51095 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed the file description header at the top to remove the developer name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51094 91177308-0d34-0410-b5e6-96231b3b80d8

Commit the header I accidentally left out of 51083.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51093 91177308-0d34-0410-b5e6-96231b3b80d8

Doh. Alignment is in bytes, not in bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51092 91177308-0d34-0410-b5e6-96231b3b80d8

Change target-specific classes to use more precise static types.
This eliminates the need for several awkward casts, including
the last dynamic_cast under lib/Target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51091 91177308-0d34-0410-b5e6-96231b3b80d8

Move RemoveFromVector out of the global namespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51090 91177308-0d34-0410-b5e6-96231b3b80d8

Whitespace cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51089 91177308-0d34-0410-b5e6-96231b3b80d8

Make PreVerifyID, IntSigsEnd, and KillSigsEnd const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51088 91177308-0d34-0410-b5e6-96231b3b80d8

Make getNumContainedManagers and getNumContainedPasses const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51087 91177308-0d34-0410-b5e6-96231b3b80d8

Make PassInfo noncopyable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51085 91177308-0d34-0410-b5e6-96231b3b80d8

Do not run instruction combiner in middle of loop optimization passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51084 91177308-0d34-0410-b5e6-96231b3b80d8

Split the loop unroll mechanism logic out into a utility function.
Patch by Matthijs Kooijman!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51083 91177308-0d34-0410-b5e6-96231b3b80d8

Fix Analysis/BasicAA/pure-const-dce.ll.  This turned out to be a correctness
bug as well as a missed optimization.  We weren't properly checking for local
dependencies before moving on to non-local ones when doing non-local read-only
call CSE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51082 91177308-0d34-0410-b5e6-96231b3b80d8

Merge of r51073-51074 from use-diet branch.

Do not rely on std::swap<Use>, provide a (faster) member function instead.
This change is primarily necessitated by MSVC++'s incompatibility with
declaring std::swap<Use> to be a friend of Use.

Also contains some minor tweaks to Use inline functions,
to undo pointless changes that sneaked in with the last merge.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51078 91177308-0d34-0410-b5e6-96231b3b80d8

Make this function public.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51077 91177308-0d34-0410-b5e6-96231b3b80d8

Dominance Frontier is cfg only pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51075 91177308-0d34-0410-b5e6-96231b3b80d8

Fix memdep's handling of invokes when finding the dependency of another call
instruction.  This fixes some Ada miscompiles reported in PR2324.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51069 91177308-0d34-0410-b5e6-96231b3b80d8

Update the Win32 project files, patch by Razvan Aciu!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51067 91177308-0d34-0410-b5e6-96231b3b80d8

Fix for PR 2323, infinite loop in tail dup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51063 91177308-0d34-0410-b5e6-96231b3b80d8

add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51062 91177308-0d34-0410-b5e6-96231b3b80d8

- Fix the pasto in the fix for a previous pasto.
- Incorporate Chris' comment suggestion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51061 91177308-0d34-0410-b5e6-96231b3b80d8

add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51060 91177308-0d34-0410-b5e6-96231b3b80d8

s/indicies/indices/ and clarify the extractvalue and insertvalue are
working with struct field or array element values. Thanks Duncan!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51059 91177308-0d34-0410-b5e6-96231b3b80d8

Fix one more encoding bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51057 91177308-0d34-0410-b5e6-96231b3b80d8

Added configure switches for PIC16 backend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51056 91177308-0d34-0410-b5e6-96231b3b80d8

- Don't treat anyext 16-bit load as a 32-bit load if it's volatile.
- Correct a pasto.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51054 91177308-0d34-0410-b5e6-96231b3b80d8

Add thin layer over StringMap to form StringSet. By Mikhail Glushenkov.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51048 91177308-0d34-0410-b5e6-96231b3b80d8

Make the non-local CSE safety checks slightly more thorough.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51035 91177308-0d34-0410-b5e6-96231b3b80d8

Adding files for Microchip's PIC16 target.

A brief description about PIC16:
===============================
PIC16 is an 8-bit microcontroller with only one 8-bit register which is the
accumulator. All arithmetic/load/store operations are 8-bit only.
The architecture has two address spaces: program and data. The program memory
is divided into 2K pages and the data memory is divided into banks of 128 byte, with only 80 usable bytes, resulting in an non-contiguous data memory.

It supports direct data memory access (by specifying the address as part of the instruction) and indirect data and program memory access (in an unorthodox fashion which utilize a 16 bit pointer register).

Two classes of registers exist: (8-bit class which is only one
accumulator) (16-bit class, which contains one or more 16 bit
pointer(s))

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51027 91177308-0d34-0410-b5e6-96231b3b80d8

Instead of a vector load, shuffle and then extract an element. Load the element from address with an offset.
        pshufd $1, (%rdi), %xmm0
        movd %xmm0, %eax
=>
        movl 4(%rdi), %eax

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51026 91177308-0d34-0410-b5e6-96231b3b80d8

Add a testcase for non-local CSE of read-only calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51025 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for non-local CSE of read-only calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51024 91177308-0d34-0410-b5e6-96231b3b80d8

Derive GetResultInst from UnaryInstruction, this simplifies code and removes a FIXME.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51023 91177308-0d34-0410-b5e6-96231b3b80d8

Change class' public PassInfo variables to by initialized with the
address of the PassInfo directly instead of calling getPassInfo.
This eliminates a bunch of dynamic initializations of static data.

Also, fold RegisterPassBase into PassInfo, make a bunch of its
data members const, and rearrange some code to initialize data
members in constructors instead of using setter member functions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51022 91177308-0d34-0410-b5e6-96231b3b80d8

80 col / tabs fixes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51021 91177308-0d34-0410-b5e6-96231b3b80d8

Fix and encoding error in the psrad xmm, imm8 instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51020 91177308-0d34-0410-b5e6-96231b3b80d8

On x86, it's safe to treat i32 load anyext as a normal i32 load. Ditto for i8 anyext load to i16.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51019 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up the use of static and anonymous namespaces. This turned up
several things that were neither in an anonymous namespace nor static
but not intended to be global.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51017 91177308-0d34-0410-b5e6-96231b3b80d8

Initial documentation for first-class aggregates changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51013 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a malformed %gt;

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51011 91177308-0d34-0410-b5e6-96231b3b80d8

Teach Legalize how to scalarize VSETCC
Teach X86 a few more vsetcc patterns.  Custom lowering for unsupported ones is next.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51009 91177308-0d34-0410-b5e6-96231b3b80d8

Xform bitconvert(build_pair(load a, load b)) to a single load if the load locations are at the right offset from each other.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51008 91177308-0d34-0410-b5e6-96231b3b80d8

New test for tail merging

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51007 91177308-0d34-0410-b5e6-96231b3b80d8

Be more aggressive about tail-merging small blocks
if those blocks consist entirely of common instructions;
merging will not add an extra branch in this case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51006 91177308-0d34-0410-b5e6-96231b3b80d8

Constify isSourceDefinedByImplicitDef function. Otherwise, just formatting
changes that don't change functionality.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51004 91177308-0d34-0410-b5e6-96231b3b80d8

Constify the machine instruction passed into the
"is{Trivially,Really}ReMaterializable" methods.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51001 91177308-0d34-0410-b5e6-96231b3b80d8

Initial X86 codegen support for VSETCC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51000 91177308-0d34-0410-b5e6-96231b3b80d8

Further rework of tail merge algorithm.  Not quite
semantically identical, but little difference in
either results or execution speed; but it's much
easier to read, at least IMO.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50999 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify some checks

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50998 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a copy+paste bug; pseudo-instructions shouldn't have
encoding information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50997 91177308-0d34-0410-b5e6-96231b3b80d8

Pointer comparisons should use icmp, not vicmp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50996 91177308-0d34-0410-b5e6-96231b3b80d8

Go back to passing the analyses around as parameters.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50995 91177308-0d34-0410-b5e6-96231b3b80d8

Pointer comparisons should be handled by icmp, not vicmp :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50994 91177308-0d34-0410-b5e6-96231b3b80d8

Forgot this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50993 91177308-0d34-0410-b5e6-96231b3b80d8

Hard code CmpInst back to i1 for now while I go track down what in the bitcode reader/writer is assuming i1
This was breaking a bunch of tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50992 91177308-0d34-0410-b5e6-96231b3b80d8

Refactor isConsecutiveLoad from X86 to TargetLowering so DAG combiner can make use of it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50991 91177308-0d34-0410-b5e6-96231b3b80d8

Revert the previous commit. Go ahead and hoist rematerializable instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50990 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for vicmp/vfcmp codegen, more legalize support coming.
This is necessary to unbreak the build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50988 91177308-0d34-0410-b5e6-96231b3b80d8

One real change - don't hoist something that's trivially rematerializable. It's
possible for it to produce worse code than before.

The rest of this patch is code cleanup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50987 91177308-0d34-0410-b5e6-96231b3b80d8

Fix build breakage

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50986 91177308-0d34-0410-b5e6-96231b3b80d8

Add two new instructions to the llvm IR, vicmp and vfcmp.  see updated LangRef
for details.  CodeGen support coming in a follow up patch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50985 91177308-0d34-0410-b5e6-96231b3b80d8

Make firstEightPowers const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50975 91177308-0d34-0410-b5e6-96231b3b80d8

Update comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50974 91177308-0d34-0410-b5e6-96231b3b80d8

Filter option names to escape symbols not allowed as C++ identifiers.

Makes it possible to use options with names like "Wa,".
Also fixes the -Wall option handling as a side-effect.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50973 91177308-0d34-0410-b5e6-96231b3b80d8

Make it possible to choose between different compilation graph definitions at compile-time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50972 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some error messages; Make LLVMC pass through the exit code of a failed tool.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50971 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a compile error on compilers that still want a return value
in a non-void function that calls abort.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50969 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a missing break in the ISD::FLT_ROUNDS_ handling. Patch by giuma!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50967 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase for PR2264.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50965 91177308-0d34-0410-b5e6-96231b3b80d8

Move the various analyses used by GVN into static variables so we don't have to keep passing them around or refetching them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50963 91177308-0d34-0410-b5e6-96231b3b80d8

prune #includes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50962 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new SparsePropagation analysis utility, which allows you to do
SCCP like sparse lattice analysis with relative ease.  Just pick your
lattice function and implement the transfer function and you're good.
Just make sure you don't break monotonicity ;-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50961 91177308-0d34-0410-b5e6-96231b3b80d8

Make constructors target-specific. This fixes problems where the path would
include backslashes on Windows. This should fix llvm-ld problems on win32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50960 91177308-0d34-0410-b5e6-96231b3b80d8

Add note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50959 91177308-0d34-0410-b5e6-96231b3b80d8

Fix various DOUTs to not call the extremely expensive Value::getName()
method.  DOUT statements are disabled when assertions are off, but the
side effects of getName() are still evaluated.  Just call getNameSTart,
which is close enough and doesn't cause heap traffic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50958 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify code by using SwitchInst::findCaseValue instead of reimplementing it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50957 91177308-0d34-0410-b5e6-96231b3b80d8

Remove warnings when using -Wshorten-64-to-32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50952 91177308-0d34-0410-b5e6-96231b3b80d8

Testcase for PR2303.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50951 91177308-0d34-0410-b5e6-96231b3b80d8

Fix linking of internal aliases

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50950 91177308-0d34-0410-b5e6-96231b3b80d8

Prevent -W64-to-32-shortened warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50947 91177308-0d34-0410-b5e6-96231b3b80d8

Prevent warnings from the -Wshorten-64-to-32 flag.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50946 91177308-0d34-0410-b5e6-96231b3b80d8

remove commented-out code, it is subsumed by DECLARE_TRANSPARENT_OPERAND_ACCESSORS

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50944 91177308-0d34-0410-b5e6-96231b3b80d8

merge of use-diet branch to trunk

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50943 91177308-0d34-0410-b5e6-96231b3b80d8

Re-enable loop deletion by default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50941 91177308-0d34-0410-b5e6-96231b3b80d8

When transforming a vector_shuffle to a load, the base address must not be an undef.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50940 91177308-0d34-0410-b5e6-96231b3b80d8

Set to 2.4 and regenerate configure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50935 91177308-0d34-0410-b5e6-96231b3b80d8

Add nounwind.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50931 91177308-0d34-0410-b5e6-96231b3b80d8

For now, abort when an ISD::VAARG is encountered on x86-64, rather
than silently generate invalid code.

llvm-gcc does not currently use VAArgInst; it lowers va_arg in the
front-end.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50930 91177308-0d34-0410-b5e6-96231b3b80d8

Some clean up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50929 91177308-0d34-0410-b5e6-96231b3b80d8

If movl top bits are undef, let it be selected to movlps, etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50928 91177308-0d34-0410-b5e6-96231b3b80d8

If all sources of a PHI node are defined by an implicit_def, just emit an implicit_def instead of a copy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50927 91177308-0d34-0410-b5e6-96231b3b80d8