Generalize the setcc -> PHI and Select  folding optimizations to work with
any constant RHS, not just a constant integer RHS.  This implements
select.ll:test17

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21470 91177308-0d34-0410-b5e6-96231b3b80d8

add a new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21469 91177308-0d34-0410-b5e6-96231b3b80d8

Always enable the C backend.  This fixes a *vast* number of failures on the
testers last night, as llc was not getting the cbe linked in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21468 91177308-0d34-0410-b5e6-96231b3b80d8

Add method to return the type this type will be promoted to if it is
passed through a variable argument function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21462 91177308-0d34-0410-b5e6-96231b3b80d8

Mention the --enable-targets= option to configure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21459 91177308-0d34-0410-b5e6-96231b3b80d8

* Order #includes as per style guide
* Combine multiple ``std::cerr <<'' statements into one for simplicity

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21458 91177308-0d34-0410-b5e6-96231b3b80d8

Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21457 91177308-0d34-0410-b5e6-96231b3b80d8

Hyphenate the adjective `n-bit' when used to describe values and processors

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21456 91177308-0d34-0410-b5e6-96231b3b80d8

Build the `Skeleton' target when building "all" targets

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21455 91177308-0d34-0410-b5e6-96231b3b80d8

Document the --enable-targets= feature of the configure script.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21454 91177308-0d34-0410-b5e6-96231b3b80d8

Silence gcc-4.0.0 warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21453 91177308-0d34-0410-b5e6-96231b3b80d8

Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21452 91177308-0d34-0410-b5e6-96231b3b80d8

Don't always build CBackend and Skeleton. Make use of the TARGETS_TO_BUILD
parameter instead which will correctly list the set of targets to be built.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21451 91177308-0d34-0410-b5e6-96231b3b80d8

Implement the --enable-targets= feature of the configure script. The make
variable TARGETS_TO_BUILD is used to determine which targets in lib/Target
are built and which libraries are linked into llc. This effectively
implements the feature. One item remains: disabling targets in the dejagnu
test suite.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21450 91177308-0d34-0410-b5e6-96231b3b80d8

Two changes:
1. Get rid of TOOLLINKOPTS as it is a hold over from llvm-test and only
   used to communicate additional libraries to the linker. The *standard*
   way to do that is with the LIBS variable which this change supports.

2. Allow the TARGETS_TO_BUILD variable to be set from the configuration
   substitution. This is the result of the --enable-target= parameter to
   the configure script.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21449 91177308-0d34-0410-b5e6-96231b3b80d8

Make sure the CBackend is always a target that is built.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21448 91177308-0d34-0410-b5e6-96231b3b80d8

Consolidate the target selection options into a single option,
--enable-target which can take values "all", "host-only" or a comma
separated list of target names (alpha,ia64,powerpc,skeleton,sparc,x86)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21447 91177308-0d34-0410-b5e6-96231b3b80d8

keep track of max depth stats

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21446 91177308-0d34-0410-b5e6-96231b3b80d8

First step in avoiding compilation/usage of non-relevant targets. New
options have been added to the configure script that control which targets
will be used. The options are:

--enable-target-this (default=disabled)
  This will specify that the target corresponding to the build host is
  the target that will be compiled/used. You can't use this with any of
  the other options (they'll be ignored). This is what most people want.

--disable-target-x86 (default=enabled)
  This will prevent the X86 target(s) from being compiled/used.

--disable-target-sparc (default=enabled)
  This will prevent both SparcV8 and SparcV9 from being compiled/used.

--disable-target-powerpc (default=enabled)
  This will prevent the PowerPC target from being compiled/used.

--disable-target-alpha (default=enabled)
  This will prevent the Alpha target from being compiled/used.

--disable-target-ia64 (default=enabled)
  This will prevent the IA64 target from being compiled/used.

Note that without any of these options, the default behavior is to build
all targets, as is the current practice.

All these options do is set up the substititution variable TARGETS_TO_BUILD
which contains the targets that should be compiled/used. The variable is
intended to be used in the makefiles. Those changes will come later.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21445 91177308-0d34-0410-b5e6-96231b3b80d8

Updated dependence analyzer. Fixed numerous bugs. Same stage scheduling, etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21444 91177308-0d34-0410-b5e6-96231b3b80d8

Malloc/Free have mod/ref effects.  Do not allow CSE of function calls that
call malloc/free.  This fixes PR555.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21443 91177308-0d34-0410-b5e6-96231b3b80d8

remove 'another common example', which doesn't work with VC++, and indent
another example properly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21442 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate tabs and trailing spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21441 91177308-0d34-0410-b5e6-96231b3b80d8

Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21440 91177308-0d34-0410-b5e6-96231b3b80d8

Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21439 91177308-0d34-0410-b5e6-96231b3b80d8

Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21438 91177308-0d34-0410-b5e6-96231b3b80d8

Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21437 91177308-0d34-0410-b5e6-96231b3b80d8

Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21436 91177308-0d34-0410-b5e6-96231b3b80d8

Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21433 91177308-0d34-0410-b5e6-96231b3b80d8

Add the RUN: prefix to the start of the run line so this test doesn't fail.
BTW .. isn't the date on this funky? We haven't reachec 2005-05-09 yet???

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21432 91177308-0d34-0410-b5e6-96231b3b80d8

Change some old-style casts to C++ style casts to avoid warnings in XPS
compilation. This change has been waiting in the wings for a long time but
since Misha just did a global change, I figured now was the time to commit
it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21431 91177308-0d34-0410-b5e6-96231b3b80d8

There is no =head3. Convert to =head2.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21430 91177308-0d34-0410-b5e6-96231b3b80d8

Correct the documentation to match the program.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21429 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21428 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21427 91177308-0d34-0410-b5e6-96231b3b80d8

* Remove trailing whitespace
* Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21426 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21425 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21424 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21422 91177308-0d34-0410-b5e6-96231b3b80d8

* Remove trailing whitespace
* Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21421 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21420 91177308-0d34-0410-b5e6-96231b3b80d8

* Remove trailing whitespace
* Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21418 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21417 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21416 91177308-0d34-0410-b5e6-96231b3b80d8

* Remove trailing whitespace
* Convert tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21415 91177308-0d34-0410-b5e6-96231b3b80d8

Check for eqv matching

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21414 91177308-0d34-0410-b5e6-96231b3b80d8

Match another form of eqv

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21413 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21412 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21411 91177308-0d34-0410-b5e6-96231b3b80d8

this passes on darwin

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21410 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21409 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21408 91177308-0d34-0410-b5e6-96231b3b80d8

Handle stores of global address as stores of immediates.  Instead of:

test1:
        movl $N, %eax
        movl %eax, G
        ret

emit:

test1:
        movl $N, G
        ret

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21407 91177308-0d34-0410-b5e6-96231b3b80d8

Handle (store &GV -> mem) as a store immediate.  This often occurs for
printf format strings and other stuff.  Instead of generating this:

        movl $l1__2E_str_1, %eax
        movl %eax, (%esp)

we now emit:

        movl $l1__2E_str_1, (%esp)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21406 91177308-0d34-0410-b5e6-96231b3b80d8

Use the actual uid/gid for defaulting the fields in the archive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21405 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug where we would not promote calls to invokes if they occured in
the same block as the setjmp.  Thanks to Greg Pettyjohn for noticing this!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21403 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate calls to system dependent function getuid by using
the newly implemented sys::Process::GetCurrentUserId function. Replace
similarly for getgid.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21402 91177308-0d34-0410-b5e6-96231b3b80d8

Provide an implementation of the GetCurrentUserId and GetCurrentGroupId
methods that were recently added to the interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21401 91177308-0d34-0410-b5e6-96231b3b80d8

Add two new methods for getting the User Id and Group Id values for the
current process.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21400 91177308-0d34-0410-b5e6-96231b3b80d8

Add doxygen comments, patch contributed by Evan Jones.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21397 91177308-0d34-0410-b5e6-96231b3b80d8

add support for taking and resolving the address of free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21396 91177308-0d34-0410-b5e6-96231b3b80d8

add support for taking the address of free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21395 91177308-0d34-0410-b5e6-96231b3b80d8

Improve doxygen, from part of Evan's patch that didn't apply.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21394 91177308-0d34-0410-b5e6-96231b3b80d8

Improve doxygen documentation, patch contributed by Evan Jones!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21393 91177308-0d34-0410-b5e6-96231b3b80d8

Improve and elimination.  On PPC, for:

bool %test(int %X) {
        %Y = and int %X, 8
        %Z = setne int %Y, 0
        ret bool %Z
}

we now generate this:

        rlwinm r2, r3, 0, 28, 28
        srwi r3, r2, 3

instead of this:

        rlwinm r2, r3, 0, 28, 28
        srwi r2, r2, 3
        rlwinm r3, r2, 0, 31, 31

I'll leave it to Nate to get it down to one instruction. :)

---------------------------------------------------------------------

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21391 91177308-0d34-0410-b5e6-96231b3b80d8

Fold (x & 8) != 0 and (x & 8) == 8  into (x & 8) >> 3.

This turns this PPC code:

        rlwinm r2, r3, 0, 28, 28
        cmpwi cr7, r2, 8
        mfcr r2
        rlwinm r3, r2, 31, 31, 31

into this:

        rlwinm r2, r3, 0, 28, 28
        srwi r2, r2, 3
        rlwinm r3, r2, 0, 31, 31

Next up, nuking the extra and.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21390 91177308-0d34-0410-b5e6-96231b3b80d8

Instcombine this:

        %shortcirc_val = select bool %tmp.1, bool true, bool %tmp.4             ; <bool> [#uses=1]
        %tmp.6 = cast bool %shortcirc_val to int                ; <int> [#uses=1]

into this:

        %shortcirc_val = or bool %tmp.1, %tmp.4         ; <bool> [#uses=1]
        %tmp.6 = cast bool %shortcirc_val to int                ; <int> [#uses=1]

not this:

        %tmp.4.cast = cast bool %tmp.4 to int           ; <int> [#uses=1]
        %tmp.6 = select bool %tmp.1, int 1, int %tmp.4.cast             ; <int> [#uses=1]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21389 91177308-0d34-0410-b5e6-96231b3b80d8

Teach simplifycfg that setcc is cheap and non-trapping, so that it can
convert this:

        %tmp.1 = seteq int %i, 0                ; <bool> [#uses=1]
        br bool %tmp.1, label %shortcirc_done, label %shortcirc_next

shortcirc_next:         ; preds = %entry
        %tmp.4 = seteq int %j, 0                ; <bool> [#uses=1]
        br label %shortcirc_done

shortcirc_done:         ; preds = %shortcirc_next, %entry
        %shortcirc_val = phi bool [ %tmp.4, %shortcirc_next ], [ true, %entry ]         ; <bool> [#uses=1]

to this:
        %tmp.1 = seteq int %i, 0                ; <bool> [#uses=1]
        %tmp.4 = seteq int %j, 0                ; <bool> [#uses=1]
        %shortcirc_val = select bool %tmp.1, bool true, bool %tmp.4             ; <bool> [#uses=1]

... which is later simplified by instcombine into an or.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21388 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some broken links, taking care of PR554

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21387 91177308-0d34-0410-b5e6-96231b3b80d8

update to match build changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21386 91177308-0d34-0410-b5e6-96231b3b80d8

For Bug 543:
Standardize the error messages to be in "path: what failed: why" format.
Also attempt to use the correct errno to ThrowErrno in situations where
the errno value is erased by subsequent system calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21385 91177308-0d34-0410-b5e6-96231b3b80d8

For Bug 543:
Allow the ThrowErrno function to optionally accept an error number
parameter so that callers can specify the error number to be used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21384 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace at the end of lines

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21380 91177308-0d34-0410-b5e6-96231b3b80d8

Remove trailing whitespace, patch by Markus Oberhumer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21379 91177308-0d34-0410-b5e6-96231b3b80d8

Add FIXME by Markus Oberhumer from bug 545: not checking for "." in $PATH may
result in returning executable files that won't be runnable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21378 91177308-0d34-0410-b5e6-96231b3b80d8

Do not mark directories as `executable', we only want program files
Patch by Markus Oberhumer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21377 91177308-0d34-0410-b5e6-96231b3b80d8

#include system headers after all LLVM headers

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21374 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate trailing spaces at end-of-line

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21372 91177308-0d34-0410-b5e6-96231b3b80d8

Consistently eschew space between `*' or `&' and function argument name

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21371 91177308-0d34-0410-b5e6-96231b3b80d8

Ignore dangling symlinks in getDirectoryContents()
Thanks to Markus Oberhumer for the patch!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21370 91177308-0d34-0410-b5e6-96231b3b80d8

Initialize fields mode, uid, and gid.
Patch by Markus Oberhumer.  Thanks!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21369 91177308-0d34-0410-b5e6-96231b3b80d8

Align comments together for consistency

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21368 91177308-0d34-0410-b5e6-96231b3b80d8

* Print commands as we execute them with `-v'
* Add option `-save-temps'
Patch contributed by Markus Oberhumer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21367 91177308-0d34-0410-b5e6-96231b3b80d8

Wrap some long lines.
Make IPSCCP strip off dead constant exprs that are using functions, making
them appear as though their address is taken.  This allows us to propagate
some more pool descriptors, lowering the overhead of pool alloc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21363 91177308-0d34-0410-b5e6-96231b3b80d8

ignore generated files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21362 91177308-0d34-0410-b5e6-96231b3b80d8

fix bogus warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21361 91177308-0d34-0410-b5e6-96231b3b80d8

fix PR549

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21360 91177308-0d34-0410-b5e6-96231b3b80d8

Bug fixed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21355 91177308-0d34-0410-b5e6-96231b3b80d8

Eliminate a broken transformation, fixing PR548

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21354 91177308-0d34-0410-b5e6-96231b3b80d8

Add completely untested support for mtcrf/mfcrf encoding

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21353 91177308-0d34-0410-b5e6-96231b3b80d8

switch over the rest of the formats that use RC to use isDOT

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21352 91177308-0d34-0410-b5e6-96231b3b80d8

Convert the XForm instrs and XSForm instruction over to use isDOT

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21351 91177308-0d34-0410-b5e6-96231b3b80d8

Now that the ppc64 and vmx operands of I are always 0, forward substitute
them away.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21350 91177308-0d34-0410-b5e6-96231b3b80d8

convert over bform and iform instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21349 91177308-0d34-0410-b5e6-96231b3b80d8

Convert over DForm and DSForm instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21348 91177308-0d34-0410-b5e6-96231b3b80d8

Convert XLForm and XForm instructions over to use PPC64 when appropriate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21347 91177308-0d34-0410-b5e6-96231b3b80d8

Convert XO XS and XFX forms to use isPPC64

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21346 91177308-0d34-0410-b5e6-96231b3b80d8

Turn PPC64 and VMX into classes that can be added to instructions instead of
bits that must be passed up the inheritance hierarchy.  Convert MForm and AForm
instructions over

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21345 91177308-0d34-0410-b5e6-96231b3b80d8

Major change to tblgen: instead of resolving values every time a class is
finished up, only resolve fully when the def is defined.  This allows things
to be changed and all uses to be propagated through.  This implements
TableGen/LazyChange.td and fixes TemplateArgRename.td in the process.

None of the .td files used in LLVM backends are changed at all by this
patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21344 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase for a changing values late and allowing them to propagate

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21343 91177308-0d34-0410-b5e6-96231b3b80d8