llvm-svn: 43550

llvm-svn: 43542

llvm-svn: 43541

llvm-svn: 43535

At end of LSR, replace uses of now constant (as result of SplitCriticalEdge) PHI node with the constant value.

llvm-svn: 43533

It's not safe to tell SplitCriticalEdge to merge identical edges. It may delete the phi instruction that's being processed.

llvm-svn: 43524

CVTTPD2PI, CVTTPS2PI, CVTPI2PD, CVTPI2PS.

llvm-svn: 43523

llvm-svn: 43511

llvm-svn: 43510

llvm-svn: 43500

storing an i170 on a 32 bit machine.  This is first
promoted to a trunc-i170 store of an i256.  On a
little-endian machine this expands to a store of
an i128 and a trunc-i42 store of an i128.  The
trunc-i42 store is further expanded to a trunc-i42
store of an i64, then to a store of an i32 and a
trunc-i10 store of an i32.  At this point the operand
type is legal (i32) and expansion stops (legalization
of the trunc-i10 needs to be handled in LegalizeDAG.cpp).
On big-endian machines the high bits are stored first,
and some bit-fiddling is needed in order to generate
aligned stores.

llvm-svn: 43499

offload to getStore rather than trying to handle
both cases at once (the assertions for example
assume the store really is truncating).

llvm-svn: 43498

llvm-svn: 43488

- Allow icmp rewrite using an iv / stride of a smaller integer type.

llvm-svn: 43480

llvm-svn: 43470

lowering load and store instructions.

llvm-svn: 43468

llvm-svn: 43467

of just printing to cerr.

llvm-svn: 43466

transformation. Previously, it's restricted by ensuring the number of load uses
is one. Now the restriction is loosened up by allowing setcc uses to be
"extended" (e.g. setcc x, c, eq -> setcc sext(x), sext(c), eq).

llvm-svn: 43465

llvm-svn: 43464

llvm-svn: 43463

llvm-svn: 43462

llvm-svn: 43461

llvm-svn: 43460

constant to an unsigned int.  We now just directly assign the literal 0.

llvm-svn: 43459

llvm-svn: 43446

llvm-svn: 43444

now.  It conflicts with clang's -pedantic flag.

llvm-svn: 43431

b/h/w/k/q inline asm memory modifiers, which are just ignored.  This fixes
PR1748 and CodeGen/X86/2007-10-28-inlineasm-q-modifier.ll

llvm-svn: 43430

zero-length fields better.

llvm-svn: 43427

can have uses too.  Wouldn't it be nice if invoke didn't exist? :)

llvm-svn: 43426

pointers that were not backpatched (previously checked the wrong invariant).

llvm-svn: 43425

llvm-svn: 43424

eager backpatching instead of waithing until all objects have been
deserialized.  This allows us to reduce the memory footprint needed
for backpatching.

llvm-svn: 43422

of offset and the alignment of ptr if these are both powers of
2.  While the ptr alignment is guaranteed to be a power of 2,
there is no reason to think that offset is.  For example, if
offset is 12 (the size of a long double on x86-32 linux) and
the alignment of ptr is 8, then the alignment of ptr+offset
will in general be 4, not 8.  Introduce a function MinAlign,
lifted from gcc, for computing the minimum guaranteed alignment.
I've tried to fix up everywhere under lib/CodeGen/SelectionDAG/.
I also changed some places that weren't wrong (because both values
were a power of 2), as a defensive change against people copying
and pasting the code.
Hopefully someone who cares about alignment will review the rest
of LLVM and fix up the remaining places.  Since I'm on x86 I'm
not very motivated to do this myself...

llvm-svn: 43421

llvm-svn: 43420

- ChangeCompareStride only reuse stride that is larger than current stride. It
  will let the general reuse mechanism to try to reuse a smaller stride.
- Watch out for multiplication overflow in ChangeCompareStride.
- Replace std::set with SmallPtrSet.

llvm-svn: 43408

llvm-svn: 43405

  FE.
- Explicitly pass in the alignment of the load & store.
- XFAIL 2007-10-23-UnalignedMemcpy.ll because llc has a bug that crashes on
  unaligned pointers.

llvm-svn: 43398

llvm-svn: 43384