Add support for eliminate stores to stack-allocated memory locations at the end
of a function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39754 91177308-0d34-0410-b5e6-96231b3b80d8

Handle eliminating stores that occur right before a free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39753 91177308-0d34-0410-b5e6-96231b3b80d8

Handle packed structs in the CBackend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39752 91177308-0d34-0410-b5e6-96231b3b80d8

Emit correct linkage. Patch by Roman Samoilov.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39751 91177308-0d34-0410-b5e6-96231b3b80d8

Add test case for PR1545.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39749 91177308-0d34-0410-b5e6-96231b3b80d8

Missed a couple of places where new instructions are added due to spill / restore.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39748 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up a few things based on Chris' feedback.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39747 91177308-0d34-0410-b5e6-96231b3b80d8

Adding ability to demote phi to stack.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39744 91177308-0d34-0410-b5e6-96231b3b80d8

Fix hang compiling TimberWolf (allow for islands
of size other than 4).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39743 91177308-0d34-0410-b5e6-96231b3b80d8

Assert when TLS is not implemented.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39737 91177308-0d34-0410-b5e6-96231b3b80d8

Exception handling has been implemented.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39732 91177308-0d34-0410-b5e6-96231b3b80d8

Fix an oversight: for modules with no other identifying target info,
the sparc backend should be preferred when running on sparcs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39142 91177308-0d34-0410-b5e6-96231b3b80d8

If assertions are not enabled, we should return False here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38535 91177308-0d34-0410-b5e6-96231b3b80d8

No longer need to track last def / use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38534 91177308-0d34-0410-b5e6-96231b3b80d8

Fix for PR1545: Revamp code that update kill information due to register reuse.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38525 91177308-0d34-0410-b5e6-96231b3b80d8

Adjust this per the changes to the configuration script in the llvm-top module.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38521 91177308-0d34-0410-b5e6-96231b3b80d8

Add FastDSE, a new algorithm for doing dead store elimination.  This algorithm is not as accurate
as the current DSE, but it only a linear scan over each block, rather than quadratic.  Eventually
(once it has been improved somewhat), this will replace the current DSE.

NOTE: This has not yet been extensively tested.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38517 91177308-0d34-0410-b5e6-96231b3b80d8

Make this work with GLIBCXX_DEBUG.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38516 91177308-0d34-0410-b5e6-96231b3b80d8

Didn't mean the last commit. Revert.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38515 91177308-0d34-0410-b5e6-96231b3b80d8

Fix fp_constant_op failure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38514 91177308-0d34-0410-b5e6-96231b3b80d8

Update.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38513 91177308-0d34-0410-b5e6-96231b3b80d8

fix 80 columnn violations, increasing the world's
pedantic satisfaction level.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38512 91177308-0d34-0410-b5e6-96231b3b80d8

Calculate the size of a array allocation correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38511 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a crasher when finding the dependency of a call.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38510 91177308-0d34-0410-b5e6-96231b3b80d8

Make this pass registration static as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38509 91177308-0d34-0410-b5e6-96231b3b80d8

Make the pass registration static.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38508 91177308-0d34-0410-b5e6-96231b3b80d8

add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38507 91177308-0d34-0410-b5e6-96231b3b80d8

check for correct usage of the byval attribute

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38506 91177308-0d34-0410-b5e6-96231b3b80d8

During module cloning copy aliases too. This fixes PR1544

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38505 91177308-0d34-0410-b5e6-96231b3b80d8

Handle vaarg instructions correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38504 91177308-0d34-0410-b5e6-96231b3b80d8

Change the peep for EXTRACT_VECTOR_ELT of BUILD_PAIR to look for
the new CONCAT_VECTORS node type instead, as that's what legalize
uses now. And add a peep for EXTRACT_VECTOR_ELT of INSERT_VECTOR_ELT.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38503 91177308-0d34-0410-b5e6-96231b3b80d8

Volatile loads and stores depend on each other.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38502 91177308-0d34-0410-b5e6-96231b3b80d8

Remove clobbersPred. Add an OptionalDefOperand to instructions which have the 's' bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38501 91177308-0d34-0410-b5e6-96231b3b80d8

Remove clobbersPred.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38500 91177308-0d34-0410-b5e6-96231b3b80d8

Add OptionalDefOperand. Remove clobbersPred. Also add DefinesPredicate to be used by if-converter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38499 91177308-0d34-0410-b5e6-96231b3b80d8

Try committing again. Add OptionalDefOperand. Remove clobbersPred.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38498 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for finding the dependencies of call and invoke instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38497 91177308-0d34-0410-b5e6-96231b3b80d8

If the operand is marked M_OPTIONAL_DEF_OPERAND, then it's a def.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38496 91177308-0d34-0410-b5e6-96231b3b80d8

Somehow this wasn't committed last time. M_CLOBBERS_PRED is gone.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38495 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the build, and fix the handling of pointer sizes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38494 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bunch of things from Chris' feedback

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38493 91177308-0d34-0410-b5e6-96231b3b80d8

Add a regression test for folding spill code into scalar min and max.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38492 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug in the folding of binary operators to undef.
Thanks to Lauro for spotting this!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38491 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure to keep symbols for profile build.

Patch by Benoit Boissinot. Thanks, Benoit!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38490 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the folding of undef in several binary operators to recognize
undef in either the left or right operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38489 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify the handling of the --*flags options. The makefile already gets it
right so there is no need to duplicate logic, just use the values the makefile
provides.

Eliminate some redundnt -D options from the output.

Fix the help output so it fits on 80 cols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38488 91177308-0d34-0410-b5e6-96231b3b80d8

Makesure the -cppflags also uses the CPP.BaseFlags as the CPP.Defines only
contains some of the defines but not all CPP flags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38487 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure that preprocessor symbols like _DEBUG, NDEBUG, and _GLIBC_DEBUG are
put into the CPP.Defines variable. Seems the convention was corrupted with
various changes made. It is important to get command line parameters into the
right variable because things like llvm-config and sub-makefiles depend on it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38486 91177308-0d34-0410-b5e6-96231b3b80d8

When a node value is only used by a CopyToReg, use the user's dest. This should not be restricted to nodes that produce only a single value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38485 91177308-0d34-0410-b5e6-96231b3b80d8

Move DenseMapKeyInfo<SDOperand> from LegalizeDAG.cpp to SelectionDAGNodes.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38484 91177308-0d34-0410-b5e6-96231b3b80d8

Update the ValueRanges interface to use value numbers instead of Value*s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38483 91177308-0d34-0410-b5e6-96231b3b80d8

Evidently my earlier fix did not go far enough.  When resizing a zero-sized
BitVector, make sure to set or clear ALL of the bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38481 91177308-0d34-0410-b5e6-96231b3b80d8

Move some key maps from std::map to DenseMap.  This improves the time to optimize Anton's testcase from 17.5s
to 15.7s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38480 91177308-0d34-0410-b5e6-96231b3b80d8

Use a cheaper test, delaying calling find_leader() until we know that it's necessary.  This improves
the time to optimize Anton's testcase from 21.1s to 17.6s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38479 91177308-0d34-0410-b5e6-96231b3b80d8

Define non-intrinsic instructions for vector min, max, sqrt, rsqrt, and rcp,
in addition to the intrinsic forms. Add spill-folding entries for these new
instructions, and for the scalar min and max instrinsic instructions which
were missing. And add some preliminary ISelLowering code for using the new
non-intrinsic vector sqrt instruction, and fneg and fabs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38478 91177308-0d34-0410-b5e6-96231b3b80d8

Add an assertion if find_leader fails.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38477 91177308-0d34-0410-b5e6-96231b3b80d8

When resizing a BitVector with size 0, be sure to clear the low word before using it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38476 91177308-0d34-0410-b5e6-96231b3b80d8

Take advantage of the new fast SmallPtrSet assignment operator when propagating AVAIL_OUT sets.
This reduces the time to optimize Anton's testcase from 31.2s to 21.s!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38475 91177308-0d34-0410-b5e6-96231b3b80d8

Make the assignment operator for SmallPtrSet much faster for normal cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38474 91177308-0d34-0410-b5e6-96231b3b80d8

Preserve volatililty and alignment information when lowering or
simplifying loads and stores.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38473 91177308-0d34-0410-b5e6-96231b3b80d8

Expose struct size threhold to allow users to tweak their own setting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38472 91177308-0d34-0410-b5e6-96231b3b80d8

Change getCopyToParts and getCopyFromParts to always use target-endian
register ordering, for both physical and virtual registers. Update the PPC
target lowering for calls to expect registers for the call result to
already be in target order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38471 91177308-0d34-0410-b5e6-96231b3b80d8

Make the assignment operator for SmallPtrSet return a reference, and fix a long-standing bug in the copy
ctor while I'm at it.

Thanks to Chris Lattner for help with this patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38470 91177308-0d34-0410-b5e6-96231b3b80d8

Fix memory leak.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38469 91177308-0d34-0410-b5e6-96231b3b80d8

Initialize the IndexedModeActions array with memset before
updating it with calls to setIndexedLoadAction/setIndexedStoreAction,
which only update a few bits at a time. This avoids ostensible
undefined behavior of operationg on values which may be
trap-representations, and as a practical matter fixes errors from
valgrind, which doesn't track uninitialized memory with bit
granularity.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38468 91177308-0d34-0410-b5e6-96231b3b80d8

Fix an error in the assignment operator that was causing an infinite loop in GVNPRE.cpp.
Patch by Chis Lattner.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38467 91177308-0d34-0410-b5e6-96231b3b80d8

force a cpu without SSE

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38466 91177308-0d34-0410-b5e6-96231b3b80d8

allow this to work on ppc-darwin

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38465 91177308-0d34-0410-b5e6-96231b3b80d8

remove this bogus t-t

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38464 91177308-0d34-0410-b5e6-96231b3b80d8

The various "getModuleMatchQuality" implementations should return
zero if they see a target triple they don't understand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38463 91177308-0d34-0410-b5e6-96231b3b80d8

add target triple to fix PR1546

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38462 91177308-0d34-0410-b5e6-96231b3b80d8

work around an aparent gcc name resolution bug by
detemplatizing this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38461 91177308-0d34-0410-b5e6-96231b3b80d8

implement operator= for smallptrset

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38460 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38459 91177308-0d34-0410-b5e6-96231b3b80d8

Fix this warning:

DAGCombiner.cpp: In member function 'llvm::SDOperand<unnamed>::DAGCombiner::visitOR(llvm::SDNode*)':
DAGCombiner.cpp:1608: warning: passing negative value '-0x00000000000000001' for argument 1 to 'llvm::SDOperand llvm::SelectionDAG::getConstant(uint64_t, llvm::MVT::ValueType, bool)'

oiy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38458 91177308-0d34-0410-b5e6-96231b3b80d8

Move the APInt form of SCEVUnknown::getIntegerSCEV to SCEVConstant::get, and
use SCEVConstant::get instead of SCEVUnknown::get when constructing a SCEV
for a ConstantInt.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38457 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typo in a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38456 91177308-0d34-0410-b5e6-96231b3b80d8

Add explicit triples to these tests so that llc behaves as expected on
non-Apple hosts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38455 91177308-0d34-0410-b5e6-96231b3b80d8

missed this one

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38454 91177308-0d34-0410-b5e6-96231b3b80d8

fix typos

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38453 91177308-0d34-0410-b5e6-96231b3b80d8

eliminated all references to 'bytecode' from .pod files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38452 91177308-0d34-0410-b5e6-96231b3b80d8

Update the svn:ignore property to eliminate all files
that start with svn-commit. because there can be several of them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38451 91177308-0d34-0410-b5e6-96231b3b80d8

Add more svn:ignore property values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38450 91177308-0d34-0410-b5e6-96231b3b80d8

More svn:ignore property restorations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38449 91177308-0d34-0410-b5e6-96231b3b80d8

Restore properties I accidentally deleted with the last commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38448 91177308-0d34-0410-b5e6-96231b3b80d8

Set the svn:ignore property to ignore the Debug, Release, and
Release-Asserts sub-directories in all directories that build code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38447 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the cvsupdate script. Its no longer useful in the face of
tools such as svn info and svn status.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38446 91177308-0d34-0410-b5e6-96231b3b80d8

Regenerate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38444 91177308-0d34-0410-b5e6-96231b3b80d8

cvs -> svn

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38443 91177308-0d34-0410-b5e6-96231b3b80d8

Subversionify the documentation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38442 91177308-0d34-0410-b5e6-96231b3b80d8

Improve a hotspot that was making build_sets() slower by calling lookup() too
often.  This improves Anton's testcase from 36s to 32s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38441 91177308-0d34-0410-b5e6-96231b3b80d8

Subversionify the script.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38440 91177308-0d34-0410-b5e6-96231b3b80d8

Start using a set representation that remembers the set of value numbers represented
in the set.  For the moment, this results in a slight performance decrease, but
it lays the groundwork for future improvements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38439 91177308-0d34-0410-b5e6-96231b3b80d8

Bytecode -> Bitcode

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38438 91177308-0d34-0410-b5e6-96231b3b80d8

Minor language change upgrader -> upgrade tool

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38437 91177308-0d34-0410-b5e6-96231b3b80d8

This dir does not appear under /docs anymore but under /cmds so use an
absolute path to the llvm.css file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38436 91177308-0d34-0410-b5e6-96231b3b80d8

Links for commands are now generated into /cmds/ URL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38435 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some minor typos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38434 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some typos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38433 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38432 91177308-0d34-0410-b5e6-96231b3b80d8