1. CMPXCHG8B and CMPXCHG16B did not specify implicit physical register defs and uses.
2. LCMPXCHG8B is loading 64 bit memory, not 32 bit.

llvm-svn: 92985

llvm-svn: 92972

Compare the dominance information calculated using a dominance tree walk to the
information calculated based on DFS numbers, if XDEBUG is enabled.

llvm-svn: 92969

Remove a FIXME and unify code that was necessary to work around broken
updateDFSNumbers().  Before updateDFSNumbers() did not work correctly for post
dominators.

llvm-svn: 92968

The DFS number calculation for postdominators was broken. In the case of
multiple exits that form the post dominator root nodes, do not iterate over
all exits, but start from the virtual root node. Otherwise bbs, that are not
post dominated by any exit but by the virtual root node, will never be assigned
a DFS number.

llvm-svn: 92967

llvm-svn: 92964

llvm-svn: 92963

that feeds into a zext, similar to the patch I did yesterday for sext.
There is a lot of room for extension beyond this patch.

llvm-svn: 92962

When folding a and(any_ext(load)) both the any_ext and the
load have to have only a single use.

This removes the anyext-uses.ll testcase which started failing
because it is unreduced and unclear what it is testing.

llvm-svn: 92950

time, no functionality change.

llvm-svn: 92948

Revert r92939.  These intrinsics get matched to LLVM instructions,
so removing at Chris' request.

llvm-svn: 92947

llvm-svn: 92943

Add some "missing" instrinsics to make the SSE intrinsic set a bit more
orthogonal.

llvm-svn: 92939

llvm-svn: 92938

add it to the constant pool for fast-isel. We already
don't add it for the normal case.

llvm-svn: 92934

not-readonly segment on darwin.

llvm-svn: 92933

llvm-svn: 92931

llvm-svn: 92926

llvm-svn: 92921

llvm-svn: 92920

llvm-svn: 92919

llvm-svn: 92918

llvm-svn: 92912

llvm-svn: 92910

are prepared to look through.

llvm-svn: 92898

llvm-svn: 92896

llvm-svn: 92892

to an element of a vector in a static ctor) which occurs with an 
unrelated patch I'm testing.  Annoyingly, EvaluateStoreInto basically 
does exactly the same stuff as InsertElement constant folding, but it
now handles vectors, and you can't insertelement into a vector.  It
would be 'really nice' if GEP into a vector were not legal.

llvm-svn: 92889

Fix a minor regression from my dag combiner changes. One more place which needs to look pass truncates.

llvm-svn: 92885

std::vector and llvm::SmallVector have annoying performance
tradeoffs. No, I don't expect this to matter, and now it won't.

llvm-svn: 92884

llvm-svn: 92883

llvm-svn: 92876

llvm-svn: 92874

Some instructions refer to unique labels, and so cannot be trivially cloned
with CloneMachineInstr.

llvm-svn: 92873

for stack references.

llvm-svn: 92871

multiple register definitions.

llvm-svn: 92864

it work for any integer size return type.

llvm-svn: 92853

llvm-svn: 92850

(OP (trunc x), (trunc y)) -> (trunc (OP x, y))

Unfortunately this simple change causes dag combine to infinite looping. The problem is the shrink demanded ops optimization tend to canonicalize expressions in the opposite manner. That is badness. This patch disable those optimizations in dag combine but instead it is done as a late pass in sdisel.

This also exposes some deficiencies in dag combine and x86 setcc / brcond lowering. Teach them to look pass ISD::TRUNCATE in various places.

llvm-svn: 92849

llvm-svn: 92841