Only cound if we actually made a change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18800 91177308-0d34-0410-b5e6-96231b3b80d8

The split bb is really the exit of the old function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18799 91177308-0d34-0410-b5e6-96231b3b80d8

A little cleanup on this file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18798 91177308-0d34-0410-b5e6-96231b3b80d8

New feature

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18797 91177308-0d34-0410-b5e6-96231b3b80d8

Two bug fixes:
 1. Actually increment the Statistic for the GV elim optzn
 2. When resolving undef branches, only resolve branches in executable blocks,
    avoiding marking a bunch of completely dead blocks live.  This has a big
    impact on the quality of the generated code.

With this patch, we positively rip up vortex, compiling Ut_MoveBytes to a
single memcpy call. In vortex we get this:

     12 ipsccp           - Number of globals found to be constant
    986 ipsccp           - Number of arguments constant propagated
   1378 ipsccp           - Number of basic blocks unreachable
   8919 ipsccp           - Number of instructions removed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18796 91177308-0d34-0410-b5e6-96231b3b80d8

Do not delete the entry block to a function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18795 91177308-0d34-0410-b5e6-96231b3b80d8

Bools are *also* not ints. Sigh. Furthermore, most of the TargetMachine
ctor parameters can be defaulted.

Print the transformed llvm code input to the instruction selector
when -print-machineinstrs is on, just like V9.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18794 91177308-0d34-0410-b5e6-96231b3b80d8

Look for many more moves to fold (previously, we only
*or g0, x      add g0, x          recognized * as a move)
 or  x, g0     add  x, g0
 or  0, x      add  0, x
 or  x, 0      add  x, 0

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18793 91177308-0d34-0410-b5e6-96231b3b80d8

Make GEPs not suck so much:
* Don't emit the Index * ElementSize multiply if Index is a constant.
* Use a shift, not a multiply, if ElementSize is 1/2/4/8.
* If ElementSize fits in the immediate field of SMUL, then put it there.

Fix a bug where struct offsets might be truncated (ConstantSInt::get is
now used instead of ConstantInt::get).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18792 91177308-0d34-0410-b5e6-96231b3b80d8

Update lists of failing benchmarks, including info on which
ones are failing in cbe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18791 91177308-0d34-0410-b5e6-96231b3b80d8

Implement Transforms/SCCP/ipsccp-gvar.ll, by tracking values stored to
non-address-taken global variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18790 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase that ipsccp should handle.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18789 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some minor spellos and grammaros.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18788 91177308-0d34-0410-b5e6-96231b3b80d8

Revert the last patch. We really do need SimplyCFG.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18787 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug where we could delete dead invoke instructions with uses.
In functions where we fully constant prop the return value, replace all
ret instructions with 'ret undef'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18786 91177308-0d34-0410-b5e6-96231b3b80d8

Path::get -> Path::toString

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18785 91177308-0d34-0410-b5e6-96231b3b80d8

Remove this pass as its no longer needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18783 91177308-0d34-0410-b5e6-96231b3b80d8

This pass is no longer needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18782 91177308-0d34-0410-b5e6-96231b3b80d8

Implement SCCP/ipsccp-conditional.ll, by totally deleting dead blocks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18781 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18780 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of warning from flex.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18779 91177308-0d34-0410-b5e6-96231b3b80d8

Fix SCCP/2004-12-10-UndefBranchBug.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18776 91177308-0d34-0410-b5e6-96231b3b80d8

Add missing accessor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18775 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure to link the target-triple as well, so it ends up in the .llvm.bc file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18774 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase that SCCP miscompiles.  Luckily this is extremely unlikely to
happen in practice, but IP-SCCP can trigger it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18773 91177308-0d34-0410-b5e6-96231b3b80d8

Fix output for Flexing to not print full path of source.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18769 91177308-0d34-0410-b5e6-96231b3b80d8

Check in the right test

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18767 91177308-0d34-0410-b5e6-96231b3b80d8

Fix Regression/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll,
and the failure on make_dparser last night.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18766 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase for a bug exposed by the ipsccp pass, causing dparser to fail
last night.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18765 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18764 91177308-0d34-0410-b5e6-96231b3b80d8

Merged in RELEASE_14 changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18763 91177308-0d34-0410-b5e6-96231b3b80d8

Move -lowerselect later in the chain; some select instructions were
slipping through into the instruction selector, which can't deal with
them yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18758 91177308-0d34-0410-b5e6-96231b3b80d8

Add the rest of the multiply instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18757 91177308-0d34-0410-b5e6-96231b3b80d8

Support binary operations with immediates for <= cInt.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18756 91177308-0d34-0410-b5e6-96231b3b80d8

Update lists of failing benchmarks (except C++...something is the
matter with my sparcv8 libstdc++.a) and to-do list.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18755 91177308-0d34-0410-b5e6-96231b3b80d8

Turn on ipsccp by default instead of simple IPCP

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18753 91177308-0d34-0410-b5e6-96231b3b80d8

This is the initial implementation of IPSCCP, as requested by Brian.

This implements SCCP/ipsccp-basic.ll, rips apart Olden/mst (as described in
PR415), and does other nice things.

There is still more to come with this, but it's a start.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18752 91177308-0d34-0410-b5e6-96231b3b80d8

New prototype

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18751 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18750 91177308-0d34-0410-b5e6-96231b3b80d8

Emit correct prototype for __builtin_alloca on V8.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18745 91177308-0d34-0410-b5e6-96231b3b80d8

Fix writer to properly quote label names when they don't contain
simple characters.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18744 91177308-0d34-0410-b5e6-96231b3b80d8

Do not allow empty label names.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18743 91177308-0d34-0410-b5e6-96231b3b80d8

Update testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18742 91177308-0d34-0410-b5e6-96231b3b80d8

Implement test/Feature/escaped_label.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18741 91177308-0d34-0410-b5e6-96231b3b80d8

Simple testcase for quoted label.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18740 91177308-0d34-0410-b5e6-96231b3b80d8

Link V8 backend into llc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18739 91177308-0d34-0410-b5e6-96231b3b80d8

Add SparcV8 target back into the build

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18738 91177308-0d34-0410-b5e6-96231b3b80d8

Adjust paths: Sparc/V8 --> SparcV8

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18737 91177308-0d34-0410-b5e6-96231b3b80d8

Make this file self-contained.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18736 91177308-0d34-0410-b5e6-96231b3b80d8

Update list of failing MultiSource benchmarks. It works out to +5 -5, but I
think some of these might be the CFE's fault; a rebuild should come soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18735 91177308-0d34-0410-b5e6-96231b3b80d8

When FpMOVDs appeared in pairs, we were mistakenly skipping over the latter of
each pair. I think this fixes that.

One of these days, I swear I'm going to get the hang of C++ iterators.
Really.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18734 91177308-0d34-0410-b5e6-96231b3b80d8

Missed moving bugpoint link over to CommandGuide/html/

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18732 91177308-0d34-0410-b5e6-96231b3b80d8

Generated HTML documentation is now back in CommandGuide/html/

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18731 91177308-0d34-0410-b5e6-96231b3b80d8

Rip out the guts of this document to prepare it for LLVM 1.5 progress

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18726 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up this man page

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18724 91177308-0d34-0410-b5e6-96231b3b80d8

Add new pseudo target

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18723 91177308-0d34-0410-b5e6-96231b3b80d8

The textual description is gone from this manpage, only the options and a quick
summary remain.  The manpage references Bugpoint.html as the repository for more
detailed info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18722 91177308-0d34-0410-b5e6-96231b3b80d8

* Straighten a comment to a single line
* Block off the section correctly with <!-- ***** -->

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18721 91177308-0d34-0410-b5e6-96231b3b80d8

We now have a real Bugpoint doc, not just a huge man page.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18720 91177308-0d34-0410-b5e6-96231b3b80d8

Convert from being a copy of the man page to a full-fledged document.
This doc keeps all the descriptive info from the man page, but not the options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18719 91177308-0d34-0410-b5e6-96231b3b80d8

We're continuing to make progress on MultiSource.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18714 91177308-0d34-0410-b5e6-96231b3b80d8

Bytes and shorts are aligned differently from words.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18713 91177308-0d34-0410-b5e6-96231b3b80d8

Fix asm-printing directives (how did we not see this before...apparently,
everything was an int!)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18712 91177308-0d34-0410-b5e6-96231b3b80d8

More grammaro's fixed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18708 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up some grammaro's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18705 91177308-0d34-0410-b5e6-96231b3b80d8

Correct the version numbers for automake, Perl, and CVS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18703 91177308-0d34-0410-b5e6-96231b3b80d8

Fully document the LLVM constants.  This should go into LLVM 1.4

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18701 91177308-0d34-0410-b5e6-96231b3b80d8

Reflow and clean up some of the HTML in the initial section, split linkage
types into its own section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18697 91177308-0d34-0410-b5e6-96231b3b80d8

Move the "High Level Structure" to before "Type System"

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18695 91177308-0d34-0410-b5e6-96231b3b80d8

More QMTest cruft gone!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18694 91177308-0d34-0410-b5e6-96231b3b80d8

note to self: Do not check in debugging code!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18693 91177308-0d34-0410-b5e6-96231b3b80d8

Implement trivial sinking for load instructions.  This causes us to sink 567 loads in spec

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18692 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a dead field, make the map go to integer type ID to hash better and
avoid a getType.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18691 91177308-0d34-0410-b5e6-96231b3b80d8

Fix residual Visual Studio build problems

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18688 91177308-0d34-0410-b5e6-96231b3b80d8

Test commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18687 91177308-0d34-0410-b5e6-96231b3b80d8

Remove #include inadvertently added

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18686 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate this ugly hack.  This was put back in when replaceAllUsesOf used
a different algorithm that was extremely inefficient for instructions with
many operands.

This reduces the time of this code snippet from .23s for 176.gcc to 0.03s
in a debug build, which speeds up total llvm-dis time just barely.

It's more of a code cleanup than a speedup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18685 91177308-0d34-0410-b5e6-96231b3b80d8

Add testcase and fix for yet another case where we query the size an
abstract type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18678 91177308-0d34-0410-b5e6-96231b3b80d8

Do extremely simple sinking of instructions when they are only used in a
successor block.  This turns cases like this:

x = a op b
if (c) {
  use x
}

into:

if (c) {
  x = a op b
  use x
}

This triggers 3965 times in spec, and is tested by
Regression/Transforms/InstCombine/sink_instruction.ll

This appears to expose a bug in the X86 backend for 177.mesa, which I'm
looking in to.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18677 91177308-0d34-0410-b5e6-96231b3b80d8

Add testcase and fix for another case where we query the size an
abstract type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18676 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18675 91177308-0d34-0410-b5e6-96231b3b80d8

Fix this regression and remove the XFAIL from this test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18674 91177308-0d34-0410-b5e6-96231b3b80d8

Remove last remnants of Python/QMTest support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18672 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the LLVM_DO_NOT_BUILD feature. If a file of  that name is
present in a directory that LLVM normally builds, it will skip building
the directory entirely. This is useful for allowing a bunch of projects to
live in the source tree but not be compiled from time to time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18671 91177308-0d34-0410-b5e6-96231b3b80d8

Fix Transforms/InstCombine/2004-12-08-RemInfiniteLoop.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18670 91177308-0d34-0410-b5e6-96231b3b80d8

This testcase causes the instruction combiner to go spiraling into
an infinite loop.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18669 91177308-0d34-0410-b5e6-96231b3b80d8

Move method out of line

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18666 91177308-0d34-0410-b5e6-96231b3b80d8

Move method out of line for better ICC support
Add some ifdefs for some stuff I like to be able to toggle easily

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18665 91177308-0d34-0410-b5e6-96231b3b80d8

Properly extern this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18664 91177308-0d34-0410-b5e6-96231b3b80d8

Define the pointer hash struct before the string one, to improve compatibility
with ICC.  Patch contributed by Bjørn Wennberg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18663 91177308-0d34-0410-b5e6-96231b3b80d8

The noreturn GCC extension is now supported.
Fixed some minor typos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18658 91177308-0d34-0410-b5e6-96231b3b80d8

Turn this error back into a warning, fixing the povray regression

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18655 91177308-0d34-0410-b5e6-96231b3b80d8

Test commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18654 91177308-0d34-0410-b5e6-96231b3b80d8

Build the man and ps versions of the command guide as well when
BUILD_FOR_WEBSITE is set.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18653 91177308-0d34-0410-b5e6-96231b3b80d8

ignore generated file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18652 91177308-0d34-0410-b5e6-96231b3b80d8

Mark this as an XFAIL until a fix is worked out.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18651 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed broken link to Bruce Eckle's book.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18650 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed a broken link to gcc manual.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18649 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed broken link.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18648 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed broken links.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18647 91177308-0d34-0410-b5e6-96231b3b80d8