edits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43804 91177308-0d34-0410-b5e6-96231b3b80d8

Added special version of ReadPtr() that returns a deserialized pointer
by value.  This version prohibits backpatching of pointers, so it
useful when a pointee is always known to be deserialized beforehand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43799 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed default ctor for APInt to properly initialize BitWidth to a
non-random value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43795 91177308-0d34-0410-b5e6-96231b3b80d8

Interchange Dwarf numbers of ESP and EBP on x86 Darwin.
Much improvement in exception handling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43794 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the XTARGET feature for PR1778
This will mark a test as PASS for all targets specified. It will override whatever is in XFAIL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43788 91177308-0d34-0410-b5e6-96231b3b80d8

Serializer no longer automatically emits a root-level block in the bitstream.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43784 91177308-0d34-0410-b5e6-96231b3b80d8

Augmented ReadPtr and ReadOwnedPtr to control whether or not a pointer is allowed to be backpatched
or can be registered with the deserializer to backpatch other pointers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43783 91177308-0d34-0410-b5e6-96231b3b80d8

make smallptrset more const and type correct, which caught a few
minor bugs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43782 91177308-0d34-0410-b5e6-96231b3b80d8

Remainder operations must be either integer or floating-point.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43781 91177308-0d34-0410-b5e6-96231b3b80d8

fix const correctness, BB is const, so its predecessors are too

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43780 91177308-0d34-0410-b5e6-96231b3b80d8

don't put erase or query for non-allocainst pointers in an set of allocainsts*'s

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43779 91177308-0d34-0410-b5e6-96231b3b80d8

Implement PR1777 by detecting dependent phis that
all compute the same value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43777 91177308-0d34-0410-b5e6-96231b3b80d8

When the allocator rewrite a spill register with new virtual register, it replaces other operands of the same register. Watch out for situations where
only some of the operands are sub-register uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43776 91177308-0d34-0410-b5e6-96231b3b80d8

At the point of calculating the shift amount, the
type of SV has changed from what it originally was.
However we need the store width of the original.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43775 91177308-0d34-0410-b5e6-96231b3b80d8

Renamed "Flush()" to "FlushRecord()".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43772 91177308-0d34-0410-b5e6-96231b3b80d8

Added support for processing abbreviations in the Deserializer.
Added some #ifdef-controlled messages for debugging backpatching.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43771 91177308-0d34-0410-b5e6-96231b3b80d8

fixes from Kelly Wilson.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43767 91177308-0d34-0410-b5e6-96231b3b80d8

Clarify some of the iostreams stuff.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43766 91177308-0d34-0410-b5e6-96231b3b80d8

First step towards moving the coalescer to priority_queue based machinery.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43764 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug where a def use operand isn't being detected as a sub-register use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43763 91177308-0d34-0410-b5e6-96231b3b80d8

Add pseudo dependency to force two-address instruction to be scheduled after
other uses. There was a overly restricted check that prevented some obvious
cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43762 91177308-0d34-0410-b5e6-96231b3b80d8

edits for chapter 3

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43761 91177308-0d34-0410-b5e6-96231b3b80d8

chapter 2 edits

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43760 91177308-0d34-0410-b5e6-96231b3b80d8

edits

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43758 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR1774 and BasicAA/2007-11-05-SizeCrash.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43756 91177308-0d34-0410-b5e6-96231b3b80d8

Add a few comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43755 91177308-0d34-0410-b5e6-96231b3b80d8

DomForest is a forest of registers, not instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43754 91177308-0d34-0410-b5e6-96231b3b80d8

clarify what proto is.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43753 91177308-0d34-0410-b5e6-96231b3b80d8

Add a real intro to the series.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43752 91177308-0d34-0410-b5e6-96231b3b80d8

StrongPHIElimination requires LiveVariables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43751 91177308-0d34-0410-b5e6-96231b3b80d8

Better processor definition

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43749 91177308-0d34-0410-b5e6-96231b3b80d8

typo from Ryan Brown.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43748 91177308-0d34-0410-b5e6-96231b3b80d8

fixes from Ryan Brown.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43747 91177308-0d34-0410-b5e6-96231b3b80d8

Add a missing #include.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43746 91177308-0d34-0410-b5e6-96231b3b80d8

wrap long lines

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43745 91177308-0d34-0410-b5e6-96231b3b80d8

Add support for vector remainder operations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43744 91177308-0d34-0410-b5e6-96231b3b80d8

Fix an abort in instcombine when folding creates a vector rem instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43743 91177308-0d34-0410-b5e6-96231b3b80d8

Move the LowerMEMCPY and LowerMEMCPYCall to a common place.

Thanks for the suggestions Bill :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43742 91177308-0d34-0410-b5e6-96231b3b80d8

Added support in serializer and deserializer to create arbitrary blocks.
Added detection of end-of-stream in deserializer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43736 91177308-0d34-0410-b5e6-96231b3b80d8

Make labels work in asm blocks; allow labels as
parameters.  Rename ValueRefList to ParamList
in AsmParser, since its only use is for parameters.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43734 91177308-0d34-0410-b5e6-96231b3b80d8

Added default creation of root-level block by bitstream serializer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43732 91177308-0d34-0410-b5e6-96231b3b80d8

merge in various fixes from Kelly Wilson.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43731 91177308-0d34-0410-b5e6-96231b3b80d8

add some links to the tutorial index and between chapters.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43730 91177308-0d34-0410-b5e6-96231b3b80d8

grammaro

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43729 91177308-0d34-0410-b5e6-96231b3b80d8

If a value is incoming from outside the loop then the value does not need remapping and the value is never tracked through  LastValueMap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43728 91177308-0d34-0410-b5e6-96231b3b80d8

recursive types are our friend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43727 91177308-0d34-0410-b5e6-96231b3b80d8

mention possibility of using a visitor

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43726 91177308-0d34-0410-b5e6-96231b3b80d8

clarify why prototype::codegen returns a function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43725 91177308-0d34-0410-b5e6-96231b3b80d8

TOC for chapter 8

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43724 91177308-0d34-0410-b5e6-96231b3b80d8

add table of contents to each chapter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43723 91177308-0d34-0410-b5e6-96231b3b80d8

[ARM] Fix code generation for:

static __thread struct {
    int a;
    int b;
} teste = {0, 0};

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43722 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed bug where tombstone key and empty key for DenseMap used for
pointer backpatching in deserializer were improperly created and
resulted in an assertion failure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43721 91177308-0d34-0410-b5e6-96231b3b80d8

Don't output ABI size padding twice.  By using the store
size for the field we get ABI padding automatically, so
no need to put it in again when we emit the field.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43720 91177308-0d34-0410-b5e6-96231b3b80d8

add link to llvmbuilder doxygen docs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43719 91177308-0d34-0410-b5e6-96231b3b80d8

spell identifier correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43718 91177308-0d34-0410-b5e6-96231b3b80d8

fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43717 91177308-0d34-0410-b5e6-96231b3b80d8

Dan points out that mem2reg also promotes vectors: be more precise.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43715 91177308-0d34-0410-b5e6-96231b3b80d8

Move SimpleRegisterCoalescing.h to lib/CodeGen since there is now a common
register coalescer interface: RegisterCoalescing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43714 91177308-0d34-0410-b5e6-96231b3b80d8

clarify

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43712 91177308-0d34-0410-b5e6-96231b3b80d8

fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43711 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some typos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43709 91177308-0d34-0410-b5e6-96231b3b80d8

Trivial fixes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43707 91177308-0d34-0410-b5e6-96231b3b80d8

Use movups to spill / restore SSE registers on targets where stacks alignment is
less than 16. This is a temporary solution until dynamic stack alignment is
implemented.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43703 91177308-0d34-0410-b5e6-96231b3b80d8

add a link.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43702 91177308-0d34-0410-b5e6-96231b3b80d8

finish the tutorial, yaay.

comments and feedback welcome.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43701 91177308-0d34-0410-b5e6-96231b3b80d8

Skip over deleted val#'s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43700 91177308-0d34-0410-b5e6-96231b3b80d8

Handle cases where a register and one of its super-register are both marked as
defined on the same instruction. This fixes PR1767.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43699 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test case. Chris didn't do make check. :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43698 91177308-0d34-0410-b5e6-96231b3b80d8

Added support for PIC code with "explicit relocations" *only*.
Removed all macro code for PIC (goodbye "la").
Support tested with shootout bench.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43697 91177308-0d34-0410-b5e6-96231b3b80d8

Bringing Passes.html up-to-date with the deletion of the
-emitbitcode option and the addition of -preverify.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43696 91177308-0d34-0410-b5e6-96231b3b80d8

Add the first section of chapter 8.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43695 91177308-0d34-0410-b5e6-96231b3b80d8

Deleting redundant copy of block extractor pass. See also PR1775.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43694 91177308-0d34-0410-b5e6-96231b3b80d8

Doh. PR1187 -> PR1766.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43693 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR1187.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43692 91177308-0d34-0410-b5e6-96231b3b80d8

If a long double is in a packed struct, it may be
that there is no padding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43691 91177308-0d34-0410-b5e6-96231b3b80d8

finish the chapter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43689 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate the remaining uses of getTypeSize.  This
should only effect x86 when using long double.  Now
12/16 bytes are output for long double globals (the
exact amount depends on the alignment).  This brings
globals in line with the rest of LLVM: the space
reserved for an object is now always the ABI size.
One tricky point is that only 10 bytes should be
output for long double if it is a field in a packed
struct, which is the reason for the additional
argument to EmitGlobalConstant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43688 91177308-0d34-0410-b5e6-96231b3b80d8

Another step of stronger PHI elimination down.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43684 91177308-0d34-0410-b5e6-96231b3b80d8

Deleting -emitbitcode option which did nothing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43683 91177308-0d34-0410-b5e6-96231b3b80d8

fix typos

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43682 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR1761 by not printing (rip) suffix when in -static mode.
Evan, please review this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43680 91177308-0d34-0410-b5e6-96231b3b80d8

Validation fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43679 91177308-0d34-0410-b5e6-96231b3b80d8

Typo fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43678 91177308-0d34-0410-b5e6-96231b3b80d8

Completing Passes.html with the exception of -emitbitcode, which should be
removed. This document could still stand for significant improvement:

  * Editing the pass descriptions; most were lifted with minimal editing from
    comments. Although implementation details were elided, many of the were not
    written for the audience that would be interested in this document.
  * More "before and after" examples.
  * More implicit dependency details. (Perhaps listing transforms in
    -std-compile-opts order would help alleviate this.)
  * Adding documentation for how to invoke passes programmatically.
  * Rearranging the document into a more logical taxonomy. For instance, putting
    profiling passes together.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43677 91177308-0d34-0410-b5e6-96231b3b80d8

Fix crash before main on ppc/linux with static constructors. PR1771

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43676 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a validation error.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43675 91177308-0d34-0410-b5e6-96231b3b80d8

Finishing initial docs for all transformations in Passes.html.

Also cleaned up some comments in source files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43674 91177308-0d34-0410-b5e6-96231b3b80d8

Removing a dead reference from LLVM.xcodeproj.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43673 91177308-0d34-0410-b5e6-96231b3b80d8

Change uses of getTypeSize to getABITypeSize, getTypeStoreSize
or getTypeSizeInBits as appropriate in ScalarReplAggregates.
The right change to make was not always obvious, so it would
be good to have an sroa guru review this.  While there I noticed
some bugs, and fixed them: (1) arrays of x86 long double have
holes due to alignment padding, but this wasn't being spotted
by HasStructPadding (renamed to HasPadding).  The same goes
for arrays of oddly sized ints.  Vectors also suffer from this,
in fact the problem for vectors is much worse because basic
vector assumptions seem to be broken by vectors of type with
alignment padding.   I didn't try to fix any of these vector
problems.  (2) The code for extracting smaller integers from
larger ones (in the "int union" case) was wrong on big-endian
machines for integers with size not a multiple of 8, like i1.
Probably this is impossible to hit via llvm-gcc, but I fixed
it anyway while there and added a testcase.  I also got rid of
some trailing whitespace and changed a function name which
had an obvious typo in it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43672 91177308-0d34-0410-b5e6-96231b3b80d8

If an interval is being undone clear its preference as well since the source interval may have been undone as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43670 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR1763 by allowing the 'q' constraint to work with 64-bit
regs on x86-64.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43669 91177308-0d34-0410-b5e6-96231b3b80d8

Disable tail duplication of call instructions.  The cost
metric is way off for these in general, and this works around
buggy code like that in PR1764.  we'll see if there is a big
performance impact of this.  If so, I'll revert it tomorrow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43668 91177308-0d34-0410-b5e6-96231b3b80d8

finish the 'Memory in LLVM' section

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43667 91177308-0d34-0410-b5e6-96231b3b80d8

hack and slash the first 20% of chapter seven.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43663 91177308-0d34-0410-b5e6-96231b3b80d8

There are times when the coalescer would not coalesce away a copy but the copy
can be eliminated by the allocator is the destination and source targets the
same register. The most common case is when the source and destination registers
are in different class. For example, on x86 mov32to32_ targets GR32_ which
contains a subset of the registers in GR32.

The allocator can do 2 things:
1. Set the preferred allocation for the destination of a copy to that of its source.
2. After allocation is done, change the allocation of a copy destination (if
   legal) so the copy can be eliminated.

This eliminates 443 extra moves from 403.gcc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43662 91177308-0d34-0410-b5e6-96231b3b80d8

Add std:: to sort calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43652 91177308-0d34-0410-b5e6-96231b3b80d8

Change illegal uses of ++ to uses of STLExtra.h's next function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43651 91177308-0d34-0410-b5e6-96231b3b80d8

Added overloaded version of Deserializer::ReadOwnedPtr which allows
the target pointer to be passed by reference.  This can result in less
typing, as the object to be deserialized can be inferred from the
argument.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43647 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak tailcall opt.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43646 91177308-0d34-0410-b5e6-96231b3b80d8

Add run line.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43645 91177308-0d34-0410-b5e6-96231b3b80d8