(x + y) >> 1 gets changed to:
(x>>1) + (y>>1) + (x&y&1)

Saves us having to do any llvm assembly and overflow checking in the addition.

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 188476

llvm-svn: 188130

Found in CL 1.1 spec section 6.11.3

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 187200

Reduces all vector upsamples down to its scalar components, so probably
not the most efficient thing in the world, but it does what the
spec says it needs to do.

Another possible implementation would be to convert/cast everything as
unsigned if necessary, upsample the input vectors, create the upsampled
value, and then cast back to signed if required.

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard at amd.com>
llvm-svn: 186691

Reviewed-by: Aaron Watry <awatry@gmail.com>
llvm-svn: 185839

Reviewed-By: Aaron Watry <awatry@gmail.com>
llvm-svn: 185836

Assumes that the target supports byte-addressable stores.

Completely unoptimized.

Patch by: Aaron Watry

llvm-svn: 185007

Should work for all targets and data types.  Completely unoptimized.

Patch by: Aaron Watry

llvm-svn: 185006

Squashed commit of the following:

commit a0df0a0e86c55c1bdc0b9c0f5a739e5adef4b056
Author: Aaron Watry <awatry@gmail.com>
Date:   Mon Apr 15 18:42:04 2013 -0500

    libclc: Rename clz.ll to clz_if.ll to ensure it gets built.

    configure.py treats files that have the same name with the .cl and .ll
    extensions as overriding eachother.

    E.g. If you have clz.cl and clz.ll both specified to be built in the same
    SOURCES file, only the first file listed will actually be built.

    Since the contents of clz.ll were an interface that is implemented in
    clz_impl.ll, rename clz.ll to clz_if.ll to make sure that the interface is
    built.

commit 931b62bed05c58f737de625bd415af09571a6a5a
Author: Aaron Watry <awatry@gmail.com>
Date:   Sat Apr 13 12:32:54 2013 -0500

    libclc: llvm assembly implementation of clz

    Untested... currently crashes in the same manner as add_sat.

commit 6ef0b7b0b6d2e5584086b4b9a9243743b2e0538f
Author: Aaron Watry <awatry@gmail.com>
Date:   Sat Mar 23 12:35:27 2013 -0500

    libclc: Add stub clz builtin

    For scalar int/uint, attempt to use the clz llvm builtin.. for all others
    return 0 until an actual implementation is finished.

Patch by: Aaron Watry

llvm-svn: 185004

This doesn't handle the integer cases for min(vector, scalar).

Patch by: Aaron Watry

llvm-svn: 185001

This implementation does a lot of bit shifting and masking. Suffice to say,
this is somewhat suboptimal... but it does look to produce correct results
(after the piglit tests were corrected for sign extension issues).

Someone who knows LLVM better than I could re-write this more efficiently.

Patch by: Aaron Watry

llvm-svn: 184996

Max(x,y) is available for all integer/floating types.

Patch by: Aaron Watry

llvm-svn: 184995

Created under a new shared/ directory for functions which are available for
both integer and floating point types.

Patch by: Aaron Watry

llvm-svn: 184994

Adds this function for both int and floating data types.

Patch by: Aaron Watry

llvm-svn: 184992

llvm-svn: 184988

llvm-svn: 184987

llvm-svn: 165386

llvm-svn: 165385

llvm-svn: 162274

llvm-svn: 162273

llvm-svn: 161312

llvm-svn: 157629

llvm-svn: 157615

llvm-svn: 157613

llvm-svn: 157599

native_log2.  Patch by Joshua Cranmer!

llvm-svn: 157598

llvm-svn: 157595

llvm-svn: 157590

llvm-svn: 147756