Change the x86 assembly output to use tab characters to separate the
mnemonics from their operands instead of single spaces. This makes the
assembly output a little more consistent with various other compilers
(f.e. GCC), and slightly easier to read. Also, update the regression
tests accordingly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40648 91177308-0d34-0410-b5e6-96231b3b80d8

Fix GLIBCXX_DEBUG error owing to dereference of end iterator.  There's
no guarantee that an instruction returned by getDependency exists in
the maps.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40647 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a misoptimization in aha.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40642 91177308-0d34-0410-b5e6-96231b3b80d8

Use SCEVExpander::InsertCastOfTo instead of calling new IntToPtrInst
directly, because the insert point used by the SCEVExpander may vary
from what LSR originally computes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40641 91177308-0d34-0410-b5e6-96231b3b80d8

Add note.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40638 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40636 91177308-0d34-0410-b5e6-96231b3b80d8

Revert overly aggressive interpretation of noalias

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40635 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40634 91177308-0d34-0410-b5e6-96231b3b80d8

fp2uint -> fptoui

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40633 91177308-0d34-0410-b5e6-96231b3b80d8

After a discussion with Anton, it turns out that the InReg attribute is not
permitted on function results. So, revert the last patch to make it illegal.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40632 91177308-0d34-0410-b5e6-96231b3b80d8

Bunch of tests to check loop passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40629 91177308-0d34-0410-b5e6-96231b3b80d8

Redo and generalize previously removed opt for pinsrw: (vextract (v4i32 bc (v4f32 s2v (f32 load ))), 0) -> (i32 load )

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40628 91177308-0d34-0410-b5e6-96231b3b80d8

Loop unswitch preserves dom info.
Use simple analysis interface to preserve analysis info maintained by other loop passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40627 91177308-0d34-0410-b5e6-96231b3b80d8

Implement Simple Analysis interfaces - cloneBasicBlockAnalysis and deleteAnalysisValue.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40626 91177308-0d34-0410-b5e6-96231b3b80d8

Introduce Simple Analysis interface for loop passes.
Right now, this interface provides hooks for only to operations, 1) clone basic block 2) delete value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40625 91177308-0d34-0410-b5e6-96231b3b80d8

Teach BasicAA about noalias function parameters. Passes all of DejaGNU and test-suite.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40624 91177308-0d34-0410-b5e6-96231b3b80d8

Un-XFAIL these tests after r40622 fixed them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40623 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40621 91177308-0d34-0410-b5e6-96231b3b80d8

Allow the INREG parameter attribute to be added to functions. This permits the
function result to be passed in a register. This implements the GCC regparm
function attribute for llvm by translation to the InReg parameter attribute
and fixes test/CFrontend/2002-07-30-SubregSetAssertion.c

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40619 91177308-0d34-0410-b5e6-96231b3b80d8

The InReg parameter attribute is valid on function results. The llvm-gcc-4.0
front end converts regparm attribute on the gcc function into InReg attribute
on the llvm function. This fixes test/CFrontend/2002-07-30-SubrefSetAssertion.c

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40618 91177308-0d34-0410-b5e6-96231b3b80d8

This isn't safe when there are uses of load's chain result.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40617 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR1581, patch by Timo Savola

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40616 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate (again).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40613 91177308-0d34-0410-b5e6-96231b3b80d8

Don't include newlines in the whitespace before newline (WSNL) rule.
Fix the comment for WSNL to describe its actual function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40612 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40611 91177308-0d34-0410-b5e6-96231b3b80d8

For PR1553:
Make the AsmParser auto-upgrade the old zext and sext
keywords for parameter attributes and handle the
end-of-line ambiguity.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40610 91177308-0d34-0410-b5e6-96231b3b80d8

If loop can be unswitched again, then do it yourself.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40609 91177308-0d34-0410-b5e6-96231b3b80d8

Add a comment: don't expect from external function resolver in interpreter
things, it wasn't designed to handle.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40608 91177308-0d34-0410-b5e6-96231b3b80d8

Avoid potential iterator invalidation problems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40607 91177308-0d34-0410-b5e6-96231b3b80d8

Remove dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40606 91177308-0d34-0410-b5e6-96231b3b80d8

- Allow custom lowering for CTPOP, CTTZ, CTLZ.
- Fixed an existing unexpanded tab.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40605 91177308-0d34-0410-b5e6-96231b3b80d8

LCSSA preserves dom info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40604 91177308-0d34-0410-b5e6-96231b3b80d8

Loop Rotation pass preserves dominator tree and frontier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40603 91177308-0d34-0410-b5e6-96231b3b80d8

LICM preserves scalar evolution and dom frontier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40602 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate for __dso_handle, per Anton's request.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40601 91177308-0d34-0410-b5e6-96231b3b80d8

Add detection of __dso_handle presence during configure. Use this information in the
JITer (short path is added for darwin). This is needed to properly JIT llvm-gcc-4.2-built
binaries, since cxa_atexit is enabled by default on much more targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40600 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typo/thinko.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40599 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug in getCopyFromParts turned up in the testcase for PR1132.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40598 91177308-0d34-0410-b5e6-96231b3b80d8

Use more caching when computing non-local dependence.  This makes bzip2 not
use up the entire 32-bit address space.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40596 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug caused by indiscriminantly asking for the dominators of a predecessor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40595 91177308-0d34-0410-b5e6-96231b3b80d8

Use tabs more consistently in assembler pseudo-ops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40594 91177308-0d34-0410-b5e6-96231b3b80d8

Print a space between the comment character and the basic block name,
for prettiness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40593 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the comments for the 'fast' parameter in addPassesToEmitFile.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40592 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a FIXME comment that wasn't removed when the code it accompanied
was removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40591 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the comment for getClosestTargetForJIT to reflect the fact that
it does not have a Module parameter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40590 91177308-0d34-0410-b5e6-96231b3b80d8

More explicit keywords.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40589 91177308-0d34-0410-b5e6-96231b3b80d8

Fix pastos in comments for doFinalization functions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40588 91177308-0d34-0410-b5e6-96231b3b80d8

New test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40587 91177308-0d34-0410-b5e6-96231b3b80d8

Vector fneg must be expanded into fsub -0.0, X.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40586 91177308-0d34-0410-b5e6-96231b3b80d8

Add tests for generating noalias parameter attribute from __restrict qualified function parameters. C++ tests are currently XFAILing see PR1582.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40583 91177308-0d34-0410-b5e6-96231b3b80d8

Be explicit about which level of optimization is being asked for. The -O option
is equivalent to -O1.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40581 91177308-0d34-0410-b5e6-96231b3b80d8

Change the x86 backend to use extract_subreg for truncation operations. Passes DejaGnu, SingleSource and MultiSource.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40578 91177308-0d34-0410-b5e6-96231b3b80d8

Add register info needed to use subreg sets on X86.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40572 91177308-0d34-0410-b5e6-96231b3b80d8

Make this explictly signed. Fixes PR1571.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40569 91177308-0d34-0410-b5e6-96231b3b80d8

Add facility to dump pass manager structure
to make it easier to understand failure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40567 91177308-0d34-0410-b5e6-96231b3b80d8

Trampoline codegen support for X86-32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40566 91177308-0d34-0410-b5e6-96231b3b80d8

Forget to add 'nest' to the list of parameter
attributes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40565 91177308-0d34-0410-b5e6-96231b3b80d8

Fix edge cases in handling basic block split.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40564 91177308-0d34-0410-b5e6-96231b3b80d8

Use SmallPtrSet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40560 91177308-0d34-0410-b5e6-96231b3b80d8

VStudio compiler errors and placing Function*->ExFunc map under ManagedStatic control.

This commit fixes two things.  One is a pair of VStudio compiler errors stemming from variables
which defined within the for loop statement and also within the body of the for loop.  I fixed these
by renaming one of the two variables.  Additionally, I've made the Function*->ExFunc map in
ExternalFunctions.cpp a ManagedStatic object, so that cleanup will be done on llvm_shutdown.  In repeated
uses of the interpreter, where the same Function* address may get used for completely differnet functions,
this was causing a crash.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40558 91177308-0d34-0410-b5e6-96231b3b80d8

Updates to the VStudio project files:

1. Switch from VStudio 2k3 to VStudio 2k5

2. All pdb files now will be placed as $(OutputDir)/$(ProjectName).pdb.  This puts them alongside the
binaries with the same base name as the binary.  If you need to copy the results of your llvm build
into another project's tree, this will simplify that process.

3. Recent files added to the tree were added to the proejects within the VStudio project

4. Project build dependency order fixed so that the build can take place in one pass.  A generated
file was not being built at the correct time, causing a build error in about half the projects until
the build was run a second time.

Note you will need flex and bison installed an in your path in order to build properly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40557 91177308-0d34-0410-b5e6-96231b3b80d8

Allow SmallPtrSet to hold pointers to const data.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40556 91177308-0d34-0410-b5e6-96231b3b80d8

Re-apply 40504, but with a fix for the segfault it caused in oggenc:
Make the alignedload and alignedstore patterns always require 16-byte
alignment. This way when they are used in the "Fs" instructions, in which
a vector instruction is used for a scalar purpose, they can still require
the full vector alignment. And add a regression test for this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40555 91177308-0d34-0410-b5e6-96231b3b80d8

It seems logical that InReg should be incompatible
with StructReturn and ByVal, so make it so.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40554 91177308-0d34-0410-b5e6-96231b3b80d8

As the number of parameter attributes increases,
Verifier::visitFunction is suffering a combinatorial
explosion due to the number of mutually incompatible
attributes.  This patch tidies the whole thing up
using attribute masks.  While there I fixed some
small bugs: (1) the ByVal attribute tests cast a
type to a pointer type, which can fail.  Yes, the
fact it is of a pointer type is checked before,
but a failing check does not cause the program
to exit, it continues on outputting further errors;
(2) Nothing was checking that an sret attribute is
on the first parameter; (3) nothing was checking that
a function for which isStructReturn() is true has a
parameter with the sret attribute and vice-versa (I
don't think it is possible for this to go wrong, but
it seems right to check it).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40553 91177308-0d34-0410-b5e6-96231b3b80d8

Support for trampolines, except for X86 codegen which is
still under discussion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40549 91177308-0d34-0410-b5e6-96231b3b80d8

Move subreg lowering pass to be right after regalloc, per feedback.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40548 91177308-0d34-0410-b5e6-96231b3b80d8

Reverting 40504 for now. It's breaking oggenc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40547 91177308-0d34-0410-b5e6-96231b3b80d8

Fix thinko. Update return status appropriately.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40546 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug introduced in my last commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40542 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a couple more bugs in the phi construction by pulling in code that does
almost the same things from LCSSA.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40540 91177308-0d34-0410-b5e6-96231b3b80d8

Test case for PR1573.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40539 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure epilogue esp adjustment is placed before any terminator and pop instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40538 91177308-0d34-0410-b5e6-96231b3b80d8

Don't pollute the meaning of isUnpredicatedTerminator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40537 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40536 91177308-0d34-0410-b5e6-96231b3b80d8

Minor bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40535 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the alias analysis query in DAGCombiner to not add in two
offsets. The SrcValueOffset values are the real offsets from the
SrcValue base pointers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40534 91177308-0d34-0410-b5e6-96231b3b80d8

Move the GET_SIDE_EFFECT_INFO logic from isInstructionTriviallyDead
to Instruction::mayWriteToMemory, fixing a FIXME, and helping
various places that call mayWriteToMemory directly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40533 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a bogus return statement, what appears to have been a pasto
from Relation::contradicts in Relation::incorporate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40531 91177308-0d34-0410-b5e6-96231b3b80d8

DummyInst's member functions don't need to be virtual.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40530 91177308-0d34-0410-b5e6-96231b3b80d8

In the .loc directive, print the fields as "debug" fields, so they
don't get decorated as if for immediate fields for instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40529 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a whitespace difference between CMPSSrr and CMPSDrr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40528 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a pasto in a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40527 91177308-0d34-0410-b5e6-96231b3b80d8

Add a MachineFunction pass, which runs post register allocation, that turns subreg insert/extract instruction into register copies. This ensures correct code gen if the coalescer isn't able to remove all subreg instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40521 91177308-0d34-0410-b5e6-96231b3b80d8

Teach DAG scheduling how to properly emit subreg insert/extract machine instructions. PR1350

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40520 91177308-0d34-0410-b5e6-96231b3b80d8

Have register info provide the inverse mapping of register->superregisters. PR1350

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40519 91177308-0d34-0410-b5e6-96231b3b80d8

Add target independent MachineInstr's to represent subreg insert/extract in MBB's. PR1350

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40518 91177308-0d34-0410-b5e6-96231b3b80d8

Same goes for constantpool, etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40517 91177308-0d34-0410-b5e6-96231b3b80d8

Add selection DAG nodes for subreg insert/extract. PR1350

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40516 91177308-0d34-0410-b5e6-96231b3b80d8

Fix 80 col violation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40515 91177308-0d34-0410-b5e6-96231b3b80d8

Remove subreg index from MachineInstr's and also keep vregs as unsigned when adding operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40514 91177308-0d34-0410-b5e6-96231b3b80d8

Teach TableGen about the new vector types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40513 91177308-0d34-0410-b5e6-96231b3b80d8

Fix infinite recursion for when extract_vector_elt is legal. Unfortunately no public targets use this code-path, so no test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40510 91177308-0d34-0410-b5e6-96231b3b80d8

Fix comments for new types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40507 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for 3 element 32-bit vector ValueTypes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40506 91177308-0d34-0410-b5e6-96231b3b80d8

Remove X86ISD::LOAD_PACK and X86ISD::LOAD_UA and associated code from the
x86 target, replacing them with the new alignment attributes on memory
references.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40504 91177308-0d34-0410-b5e6-96231b3b80d8

Fix what is _hopefully_ the last corner case for loops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40503 91177308-0d34-0410-b5e6-96231b3b80d8

Mac OS X x86-64 lower 4G address is not available.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40502 91177308-0d34-0410-b5e6-96231b3b80d8

Mac OS X should use 0x90 to fill in gaps to satisfy function alignment requirements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40501 91177308-0d34-0410-b5e6-96231b3b80d8

EmitAlignment() also emits optional fill value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40500 91177308-0d34-0410-b5e6-96231b3b80d8