Remove unused variable for compilation by VC++.
Patch contributed by Morten Ofstad.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17830 91177308-0d34-0410-b5e6-96231b3b80d8

Updates to Visual C++ project files for building on win32.
Patch contributed by Morten Ofstad.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17829 91177308-0d34-0410-b5e6-96231b3b80d8

Update relative files.
Patch contributed by Morten Ofstad.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17828 91177308-0d34-0410-b5e6-96231b3b80d8

Provide the ThrowErrno utility.
Patch contributed by Morten Ofstad

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17827 91177308-0d34-0410-b5e6-96231b3b80d8

Adjust implementation to match new interface.
Patch provided by Morten Ofstad

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17826 91177308-0d34-0410-b5e6-96231b3b80d8

Minor cleanups.  There is no reason for SCCP to derive from instvisitor anymore.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17825 91177308-0d34-0410-b5e6-96231b3b80d8

Count more accurately

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17824 91177308-0d34-0410-b5e6-96231b3b80d8

Update list of failing Benchmarks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17823 91177308-0d34-0410-b5e6-96231b3b80d8

Expand Defs to encompass all the possibly-call-clobbered regs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17822 91177308-0d34-0410-b5e6-96231b3b80d8

Quiet warnings on the persephone tester

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17821 91177308-0d34-0410-b5e6-96231b3b80d8

Two minor improvements:
 1. Speedup getValueState by having it not consider Arguments.  It's better
    to just add them before we start SCCP'ing.
 2. SCCP can delete the contents of dead blocks.  No really, it's ok!  This
    reduces the size of the IR for subsequent passes, even though
    simplifycfg would do the same job.  In practice, simplifycfg does not
    run until much later than sccp in gccas

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17820 91177308-0d34-0410-b5e6-96231b3b80d8

Replace the textual description with table specifying disk space requirements

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17819 91177308-0d34-0410-b5e6-96231b3b80d8

rename InstValue to LatticeValue, as it holds for more than instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17818 91177308-0d34-0410-b5e6-96231b3b80d8

Actually get the #include correct so it compiles  .. duh.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17817 91177308-0d34-0410-b5e6-96231b3b80d8

Substantially refactor the SCCP class into an SCCP pass and an SCCPSolver
class.  The only changes are minor:

 * Do not try to SCCP instructions that return void in the rewrite loop.
   This is silly and fool hardy, wasting a map lookup and adding an entry
   to the map which is never used.
 * If we decide something has an undefined value, rewrite it to undef,
   potentially leading to further simplications.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17816 91177308-0d34-0410-b5e6-96231b3b80d8

Make it actually compile on Solaris.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17815 91177308-0d34-0410-b5e6-96231b3b80d8

Consolidate the implementation of TimeValue::now() for Unix to use the
seemingly ubiquitous gettimeofday(3) call.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17814 91177308-0d34-0410-b5e6-96231b3b80d8

Consolidate the implementation of TimeValue::now() for Unix to use the
seemingly ubiquitous gettimeofday(3) call.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17813 91177308-0d34-0410-b5e6-96231b3b80d8

* Make sure the string table gets read even if there isn't a foreign
  symbol table.
* Make sure we update the file pointer for each member when rebuilding the
  symbol table.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17812 91177308-0d34-0410-b5e6-96231b3b80d8

Changes necessary to enable linking of archives without LLVM symbol tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17811 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a forgotten debug output line.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17810 91177308-0d34-0410-b5e6-96231b3b80d8

Implement functionality suggested from code review: getStatusInfo should
returnn false if the file doesn't exist rather than throw ane exception.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17809 91177308-0d34-0410-b5e6-96231b3b80d8

Changes per code review:
* Document StatusInfo fields better
* No lines > 80 cols
* Have getStatusInfo return bool if file doesn't exist
* Don't document in detail how temporary file name should be created.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17808 91177308-0d34-0410-b5e6-96231b3b80d8

Linker.h moved to include/llvm from include/llvm/Support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17807 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure IdentifyFileType is in the sys namespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17806 91177308-0d34-0410-b5e6-96231b3b80d8

Linker.h moved to include/llvm.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17805 91177308-0d34-0410-b5e6-96231b3b80d8

bugpoint needs LLVMLinker.a now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17804 91177308-0d34-0410-b5e6-96231b3b80d8

Correct call of methods whose names have changed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17803 91177308-0d34-0410-b5e6-96231b3b80d8

This program needs libLLVMLinker.a now

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17802 91177308-0d34-0410-b5e6-96231b3b80d8

Linker.h has a new home.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17801 91177308-0d34-0410-b5e6-96231b3b80d8

Moved to lib/Bytecode/Archive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17800 91177308-0d34-0410-b5e6-96231b3b80d8

Add missing include.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17799 91177308-0d34-0410-b5e6-96231b3b80d8

Fix usage of changed function prototype

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17798 91177308-0d34-0410-b5e6-96231b3b80d8

A tool for adding a symbol table to LLVM Archives

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17797 91177308-0d34-0410-b5e6-96231b3b80d8

Makefile for llvm-ranlib tool

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17796 91177308-0d34-0410-b5e6-96231b3b80d8

*Fix usage of changed function prototype*Use Archive interface to symbol table for archives

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17795 91177308-0d34-0410-b5e6-96231b3b80d8

This tool needs libLLVMArchive now

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17794 91177308-0d34-0410-b5e6-96231b3b80d8

Remove linking declarations (in Linker.h now)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17793 91177308-0d34-0410-b5e6-96231b3b80d8

We need the libLLVMArchive library now

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17792 91177308-0d34-0410-b5e6-96231b3b80d8

Moved to lib/Linker (common with gccld)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17791 91177308-0d34-0410-b5e6-96231b3b80d8

Total rewrite using Archive library & new functionality

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17790 91177308-0d34-0410-b5e6-96231b3b80d8

This tool needs the libLLVMArchive library now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17789 91177308-0d34-0410-b5e6-96231b3b80d8

Remove linking declarations (in Linker.h now)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17788 91177308-0d34-0410-b5e6-96231b3b80d8

Provide exception handling

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17787 91177308-0d34-0410-b5e6-96231b3b80d8

Moved to lib/Linker

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17786 91177308-0d34-0410-b5e6-96231b3b80d8

Add the llvm-ranlib tool

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17785 91177308-0d34-0410-b5e6-96231b3b80d8

Use llvm-ar not ar for constructing archive. Wrap at 80 cols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17784 91177308-0d34-0410-b5e6-96231b3b80d8

Forget strerror_r, it causes problems. Fix later when threading matters

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17783 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the toString method

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17782 91177308-0d34-0410-b5e6-96231b3b80d8

Update for prototype changes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17781 91177308-0d34-0410-b5e6-96231b3b80d8

* Implement getDirectoryContents * Implement getStatusInfo * Implement setStatusInfo * Implement renameFile

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17780 91177308-0d34-0410-b5e6-96231b3b80d8

Fix bugs in class invariant

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17779 91177308-0d34-0410-b5e6-96231b3b80d8

Include the correct implementation file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17778 91177308-0d34-0410-b5e6-96231b3b80d8

Don't exceed 80 columns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17777 91177308-0d34-0410-b5e6-96231b3b80d8

Implement IdentifyFileType function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17776 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the high level interface to make (de)compression easier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17775 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the MoreHelp utility that calls a function to printmore help information if the MoreHelp global is not null.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17774 91177308-0d34-0410-b5e6-96231b3b80d8

Don't bother with a re-linked library, ensure archive library is built.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17773 91177308-0d34-0410-b5e6-96231b3b80d8

*Adjust prototypes for public interface. *Rewrite LinkInArchive to use symbol tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17772 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify compression code by using the high level interface to the Compressor

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17771 91177308-0d34-0410-b5e6-96231b3b80d8

Add wrappers to get defined symbols from bytecode

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17770 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify handling of decompression

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17769 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify decompression code by using the high level interface to the Compressor

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17768 91177308-0d34-0410-b5e6-96231b3b80d8

Completely rewritten to allow reading of archives and symbol table lookup in a more efficient manner.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17767 91177308-0d34-0410-b5e6-96231b3b80d8

Implementation declarations for Archive

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17766 91177308-0d34-0410-b5e6-96231b3b80d8

First working version

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17765 91177308-0d34-0410-b5e6-96231b3b80d8

Add the Archive library

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17764 91177308-0d34-0410-b5e6-96231b3b80d8

Add the Linker library

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17763 91177308-0d34-0410-b5e6-96231b3b80d8

*Make naming convention consistent.*Add convertion to/from Unix Epoch time.*Add ability to convert to readable string.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17762 91177308-0d34-0410-b5e6-96231b3b80d8

Make the remove*OnSignal functions deal with Paths not strings

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17761 91177308-0d34-0410-b5e6-96231b3b80d8

*Put the StatusInfo type in the right section. *Provide the ability to rename a file.*Provide the ability to get/set stat(2) information.*Provide the ability to identify LLVM file types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17760 91177308-0d34-0410-b5e6-96231b3b80d8

Allow explicit closing of the MappedFile, before destruction

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17759 91177308-0d34-0410-b5e6-96231b3b80d8

Linker is its own module now. Moved to include/llvm/Linker.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17758 91177308-0d34-0410-b5e6-96231b3b80d8

Add higher level interface to simplify use of Compressor

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17757 91177308-0d34-0410-b5e6-96231b3b80d8

Add the MoreHelp function pointer. If non-null, this specifies a function to be called to print out additional help information

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17756 91177308-0d34-0410-b5e6-96231b3b80d8

Remove ReadArchiveFile (functionality moved to Archive.h). Add an alternate form for GetBytecodeSymbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17755 91177308-0d34-0410-b5e6-96231b3b80d8

Complete rewrite to get first working version.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17754 91177308-0d34-0410-b5e6-96231b3b80d8

Add a command for using llvm-ar correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17753 91177308-0d34-0410-b5e6-96231b3b80d8

Interface to Linker (revised/expanded from Support/Linker.h)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17752 91177308-0d34-0410-b5e6-96231b3b80d8

GhostLinkage not allowed in LLVM AsmWriter, either

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17751 91177308-0d34-0410-b5e6-96231b3b80d8

GhostLinkage should not reach asm printing stage

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17750 91177308-0d34-0410-b5e6-96231b3b80d8

Handle GhostLinkage (should not ever reach the assembly printing stage!)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17749 91177308-0d34-0410-b5e6-96231b3b80d8

Mark an unmaterialized function as having GhostLinkage

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17748 91177308-0d34-0410-b5e6-96231b3b80d8

Add GhostLinkage for marking functions before they're fully materialized

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17747 91177308-0d34-0410-b5e6-96231b3b80d8

If a global is just loaded and restored, realize that it is not changing
value.  This allows us to turn more globals into constants and eliminate them.
This patch implements GlobalOpt/load-store-global.llx.

Note that this patch speeds up 255.vortex from:

Output/255.vortex.out-cbe.time:program 7.640000
Output/255.vortex.out-llc.time:program 9.810000

to:

Output/255.vortex.out-cbe.time:program 7.250000
Output/255.vortex.out-llc.time:program 9.490000

Which isn't bad at all!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17746 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase.  Believe it or not, this happens a LOT in vortex

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17745 91177308-0d34-0410-b5e6-96231b3b80d8

Fix build on Linux/PowerPC64 using SuSE GCC (#undef PPC)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17744 91177308-0d34-0410-b5e6-96231b3b80d8

Moved from include/llvm/Support/Linker.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17743 91177308-0d34-0410-b5e6-96231b3b80d8

Moved to lib/Bytecode/Archive in preparation for re-write.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17742 91177308-0d34-0410-b5e6-96231b3b80d8

This optimization makes MANY phi nodes that all have the same incoming value.
If this happens, detect it early instead of relying on instcombine to notice
it later.  This can be a big speedup, because PHI nodes can have many
incoming values.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17741 91177308-0d34-0410-b5e6-96231b3b80d8

Implement instcombine/phi.ll:test6 - pulling operations through PHI nodes.

This exposes subsequent optimization possiblities and reduces code size.
This triggers 1423 times in spec.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17740 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase: the phi can be eliminated if the casts are sucked into it.
Note that this reduces code size anyway (as well as making further
optimizations simpler) so it's always a win.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17739 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17738 91177308-0d34-0410-b5e6-96231b3b80d8

add a testcase, which we already handle

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17737 91177308-0d34-0410-b5e6-96231b3b80d8

Transform this:
  %X = alloca ...
  %Y = alloca ...
    X == Y

into false.  This allows us to simplify some stuff in eon (and probably
many other C++ programs) where operator= was checking for self assignment.
Folding this allows us to SROA several additional structs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17735 91177308-0d34-0410-b5e6-96231b3b80d8

Remove note to self

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17734 91177308-0d34-0410-b5e6-96231b3b80d8

Fix problem with insertion point for ADJCALLSTACKDOWN.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17733 91177308-0d34-0410-b5e6-96231b3b80d8

Update lists of failing unit tests.
Exclude bigfib, so that we effectively exclude all C++ benchmarks.
Update to-do list: mention va_start.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17732 91177308-0d34-0410-b5e6-96231b3b80d8

Oops, make this test the right thing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17731 91177308-0d34-0410-b5e6-96231b3b80d8

If a function always returns a constant, replace all calls sites with that
constant value.  This makes the return value dead and allows for
simplification in the caller.

This implements IPConstantProp/return-constant.ll

This triggers several dozen times throughout SPEC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17730 91177308-0d34-0410-b5e6-96231b3b80d8