llvm-svn: 98864

llvm-svn: 98862

No functional changes.

llvm-svn: 98860

llvm-svn: 98859

temporary workaround for matching inc/dec on x86_64 to the correct instruction.
 - This hack will eventually be replaced with a robust mechanism for handling
   matching instructions based on the available target features.

llvm-svn: 98858

to allow custom post-processing of matched instructions.

llvm-svn: 98857

llvm-svn: 98855

llvm-svn: 98854

llvm-svn: 98853

llvm-svn: 98852

llvm-svn: 98851

llvm-svn: 98850

RecyclingAllocator to allow client code to be simpler, and
simplify several clients.

llvm-svn: 98847

aligned storage, the capacity may be more than what is explicitly
requested.

llvm-svn: 98846

always create a new jump table.  The intention was to avoid merging jump
tables in SelectionDAGBuilder, and to wait for the branch folding pass to
merge tables.  Unfortunately, the same getJumpTableIndex() method is also
used to merge tables in branch folding, so as a result of this change
branch tables are never merged.  Worse, the branch folding code is expecting
getJumpTableIndex to always return the index of an existing table, but with
this change, it never does so.  In at least some cases, e.g., pr6543, this
creates references to non-existent tables.

I've fixed the problem by adding a new createJumpTableIndex function, which
will always create a new table, and I've changed getJumpTableIndex to only
look at existing tables.

llvm-svn: 98845

doesn't apply to the type, only to the variable, so subsequent uses
of U which expect it to be aligned weren't actually aligned.

llvm-svn: 98843

llvm-svn: 98840

files that produce special relocation types where the 
linker changes movq's into lea's.

llvm-svn: 98839

llvm-svn: 98838

llvm-svn: 98835

intrinsics.  The intrinsic lookup code assumes that this check has been done
and assumes the names are at least 6 characters long.  Valgrind complained
about this.  pr6638.

llvm-svn: 98831

llvm-svn: 98830

BumpPtrAllocator-allocated region to allow it to be stored in a more
compact form and to avoid the need for a non-trivial destructor call.

Use this new mechanism in ScalarEvolution instead of
FastFoldingSetNode to avoid leaking memory in the case where a
FoldingSetNodeID uses heap storage, and to reduce overall memory
usage.

llvm-svn: 98829

llvm-svn: 98824

Patch by Victor Zverovich!

llvm-svn: 98821

llvm-svn: 98820

llvm-svn: 98819

under valgrind:

==19577== Invalid free() / delete / delete[]
==19577==    at 0x4C9C866: free (vg_replace_malloc.c:325)
==19577==    by 0x5121104: ??? (in /lib/libc-2.10.2.so)
==19577==    by 0x4C97412: _vgnU_freeres (vg_preloaded.c:62)
==19577==    by 0x5041486: __run_exit_handlers (exit.c:93)
==19577==    by 0x50414FE: exit (exit.c:100)
==19577==    by 0x5028B5C: (below main) (libc-start.c:254)
==19577==  Address 0xffffffff is not stack'd, malloc'd or (recently) free'd
==19577== 

Apparently this happens under certain versions of glibc, so valgrind provides
the --run-libc-freeres=no option to avoid calling freeres().  This may increase
the number of "still reachable" blocks valgrind reports, but we don't care
about those, while this error breaks the buildbots.

There are upstream bugs about this at
http://sourceware.org/bugzilla/show_bug.cgi?id=10610 and
http://bugs.kde.org/show_bug.cgi?id=167483, but they don't look likely to be
fixed.

llvm-svn: 98813

llvm-svn: 98810

llvm-svn: 98809

llvm-svn: 98793

MCValue: Change to holding MCSymbolRefExprs instead of MCSymbols, we will need this for accessing to symbol modifiers.

llvm-svn: 98791

llvm-svn: 98790

MC/Darwin: Add a new target hook for whether the target uses "reliable" symbol differences, basically whether the assembler should attempt to understand atoms when using scattered symbols.

Also, avoid some virtual call overhead.

llvm-svn: 98789

This reverts commit 98776. It broke the llvm-gcc boot strap.

llvm-svn: 98784

X86 address mode matching code MatchAddressRecursively does some aggressive hack which require doing a RAUW. It may end up deleting some SDNode up stream. It should avoid referencing deleted nodes.

llvm-svn: 98780

llvm-svn: 98778

There is a better way coming up.

llvm-svn: 98777

Remove ugly hack that aborted the coalescer before using N^2 time.

This affects functions with very complicated live intervals for physical
registers, i.e. functions with thousands of function calls.

llvm-svn: 98776

matches that of Firstcond[0] and E means otherwise.  The Firstcond[0] is also
tagged in the Mask to facilitate Asm printing.  The disassembler also depends
on this arrangement.  This is similar to what's described in A2.5.2 ITSTATE.

Ran:

utils/lit/lit.py test/CodeGen/ARM test/CodeGen/Thumb test/CodeGen/Thumb2

successfully.

llvm-svn: 98775