Add missing space in a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18870 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure the Archive gets deleted if there's an error.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18869 91177308-0d34-0410-b5e6-96231b3b80d8

Remove commented out functions that have been replaced with lib/System
functionality.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18868 91177308-0d34-0410-b5e6-96231b3b80d8

Fix header and function comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18867 91177308-0d34-0410-b5e6-96231b3b80d8

Implement new functions per new interface

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18866 91177308-0d34-0410-b5e6-96231b3b80d8

PR351: \
Use sys::Path not FileUtilities to check file types

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18865 91177308-0d34-0410-b5e6-96231b3b80d8

Convert to use new Linker class interface

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18864 91177308-0d34-0410-b5e6-96231b3b80d8

LinkModules is now in the Linker class

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18863 91177308-0d34-0410-b5e6-96231b3b80d8

For PR351: \
* Remove IsLibrary and GetLibraryPath, replaced by FindLibrary in ../Path.cpp \
* Implement GetSystemLibraryPaths and GetBytecodeLibraryPaths, instead of the \
  GetSystemLibraryPath1 and GetSystemLibraryPath2 methods

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18862 91177308-0d34-0410-b5e6-96231b3b80d8

For PR351: \
* Move generic isArchive method here from Unix/Path.cpp \
* Implement isDynamicLibrary \
* Implement FindLibrary for Linker

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18861 91177308-0d34-0410-b5e6-96231b3b80d8

This file contains basic Linker facilities needed by all tools

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18860 91177308-0d34-0410-b5e6-96231b3b80d8

Make LinkModules a static member function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18859 91177308-0d34-0410-b5e6-96231b3b80d8

This file contains only the Linker's library linking support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18858 91177308-0d34-0410-b5e6-96231b3b80d8

For PR351: \
* Remove redundant static function LinkOneLibrary. \
* Remove unneded #includes \
* Convert FileSupport usage to sys::Path instead

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18857 91177308-0d34-0410-b5e6-96231b3b80d8

This file contains only the Linker's file linking support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18856 91177308-0d34-0410-b5e6-96231b3b80d8

For PR351: \
* Convert functions to Linker:: methods. \
* Remove unneeded #includes \
* Utilize sys::Path utilities not FileSupport utilities \
* Move File & Library linking functions to other source files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18855 91177308-0d34-0410-b5e6-96231b3b80d8

For PR351: \
* Get file information from a MappedFile instance \
* Convert file type tests to sys::Path form

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18854 91177308-0d34-0410-b5e6-96231b3b80d8

Implement error handling in OpenAndLoad* functions so the Linker can handle it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18853 91177308-0d34-0410-b5e6-96231b3b80d8

Make the size() method const

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18852 91177308-0d34-0410-b5e6-96231b3b80d8

For PR351:\
* Modify file reading to use sys::MappedFile \
* Use sys::Path instead of std::string

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18851 91177308-0d34-0410-b5e6-96231b3b80d8

Add LLVMGCCDIR for path lookup

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18850 91177308-0d34-0410-b5e6-96231b3b80d8

Make the OpenAndLoad functions have an ErrorMessage argument.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18849 91177308-0d34-0410-b5e6-96231b3b80d8

Completely rewrite the interface to be class based

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18848 91177308-0d34-0410-b5e6-96231b3b80d8

For PR351:\
* Consolidate path retrieval into just two methods. \
* Add FindLibrary as a convenience function. \
* Add isDynamicLibrary for testing for dynamic libs. \
* Make toString constant and reference clean.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18847 91177308-0d34-0410-b5e6-96231b3b80d8

For PR351:Remove the file type checking methods (now in sys::Path)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18846 91177308-0d34-0410-b5e6-96231b3b80d8

Get LLVMGCCDIR into the #defines

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18845 91177308-0d34-0410-b5e6-96231b3b80d8

Add V8 SPEC status.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18844 91177308-0d34-0410-b5e6-96231b3b80d8

Change indentation of a whole bunch of code, no real changes here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18843 91177308-0d34-0410-b5e6-96231b3b80d8

More substantial simplifications and speedups.  This makes ADCE about 20% faster
in some cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18842 91177308-0d34-0410-b5e6-96231b3b80d8

More minor microoptimizations

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18841 91177308-0d34-0410-b5e6-96231b3b80d8

Remove some more set operations

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18840 91177308-0d34-0410-b5e6-96231b3b80d8

Reduce number of set operations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18839 91177308-0d34-0410-b5e6-96231b3b80d8

Optimize div/rem + select combinations more.

In particular, implement div.ll:test10 and rem.ll:test4.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18838 91177308-0d34-0410-b5e6-96231b3b80d8

Add testcases for simple things we can handle that occur now in vortex.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18837 91177308-0d34-0410-b5e6-96231b3b80d8

Dejagnu doesn't work if you do TESTSUITE=.../
You can't pass the trailing / into Dejagnu, so make the makefile strip it off

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18836 91177308-0d34-0410-b5e6-96231b3b80d8

Fix Regression/CodeGen/PowerPC/2004-12-12-ZeroSizeCommon.ll, and all programs
when compiled with debug information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18835 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase that the PPC backend miscompiles.  It is emitting

  .comm _X,0

For X, which makes the linker thing that X is never defined.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18834 91177308-0d34-0410-b5e6-96231b3b80d8

CSE calls to getTypeSize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18833 91177308-0d34-0410-b5e6-96231b3b80d8

Properly implement copying of a global, fixing the 255.vortex & povray
failures from last night.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18832 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify code and do not invalidate iterators.
This fixes a crash compiling TimberWolfMC that was exposed due to recent
optimizer changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18831 91177308-0d34-0410-b5e6-96231b3b80d8

Use the target triple to pick this target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18830 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of subbullets for all of the "known problems" section.  None of the
other sections have subbullets, and it make the TOC look like the whole
document is known problems!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18829 91177308-0d34-0410-b5e6-96231b3b80d8

Complete the list of MultiSource failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18826 91177308-0d34-0410-b5e6-96231b3b80d8

Do not internalize a module if -link-as-library is passed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18825 91177308-0d34-0410-b5e6-96231b3b80d8

hbd should be working now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18824 91177308-0d34-0410-b5e6-96231b3b80d8

Finally enable the setcc-branch folding code.
Also, fix a bug where ubyte 255 would sometimes be output as -1. This
was afflicting hbd.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18823 91177308-0d34-0410-b5e6-96231b3b80d8

Add (currently disabled) code for canFoldSetCC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18820 91177308-0d34-0410-b5e6-96231b3b80d8

Though the previous xform applies to literally dozens (hundreds?) of variables
in SPEC, the subsequent optimziations that we are after don't play with
with FP values, so disable this xform for them.  Really we just don't want
stuff like:

double G;   (always 0 or 412312.312)
  = G;

turning into:

bool G_b;
  = G_b ? 412312.312 : 0;

We'd rather just do the load.

-Chris

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18819 91177308-0d34-0410-b5e6-96231b3b80d8

Add stubs for setcc-branch folding support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18818 91177308-0d34-0410-b5e6-96231b3b80d8

If a variable can only hold two values, and is not already a bool, shrink it
down to actually BE a bool.  This allows simple value range propagation
stuff work harder, deleting comparisons in bzip2 in some hot loops.

This implements GlobalOpt/integer-bool.ll, which is the essence of the
loop condition distilled into a testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18817 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase.  Shrinking the variable to a bool allows instcombine to delete
the condition.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18816 91177308-0d34-0410-b5e6-96231b3b80d8

If one side of and/or is known to be 0/-1, it doesn't matter
if the other side is overdefined.

This allows us to fold conditions like:  if (X < Y || Y > Z) in some cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18807 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase.  If one side of and/or is known to be 0/-1, it doesn't matter
if the other side is overdefined.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18806 91177308-0d34-0410-b5e6-96231b3b80d8

Print llvm code one function at a time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18805 91177308-0d34-0410-b5e6-96231b3b80d8

Check in the file I forgot last night, to solve all of the crashes in every
test in the suite.  :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18804 91177308-0d34-0410-b5e6-96231b3b80d8

JIT should print LLVM each function before selecting instructions for it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18803 91177308-0d34-0410-b5e6-96231b3b80d8

Rename Path::get -> Path::toString

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18802 91177308-0d34-0410-b5e6-96231b3b80d8

Update test

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18801 91177308-0d34-0410-b5e6-96231b3b80d8

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