"Reimplement (part of) the or -> add optimization.  Matching 'or' into 'add'"

With a critical fix: the add pseudos clobber EFLAGS.

llvm-svn: 116039

'add'", which seems to have broken just about everything.

llvm-svn: 116033

is general goodness because it allows ORs to be converted to LEA to avoid
inserting copies.  However, this is bad because it makes the generated .s
file less obvious and gives valgrind heartburn (tons of false positives in
bitfield code).

While the general fix should be in valgrind, we can at least try to avoid
emitting ADD instructions that *don't* get promoted to LEA.  This is more
work because it requires introducing pseudo instructions to represents
"add that knows the bits are disjoint", but hey, people really love valgrind.

This fixes this testcase:
https://bugs.kde.org/show_bug.cgi?id=242137#c20

the add r/i cases are coming next.

llvm-svn: 116007

not getting marked as mayStore.  This fixes llvm-gcc bootstrap.

llvm-svn: 115693

gross hack (having the asmmatcher handle the alias).

llvm-svn: 115685

the right places.  X86Instr64bit.td now dies, long live x86-64!

llvm-svn: 115669

llvm-svn: 115627

llvm-svn: 115607

llvm-svn: 115605

bswap32 doesn't read eflags.

llvm-svn: 115604

pseudo instructions.

Move POPCNT to InstrSSE since they are SSE4 instructions.

llvm-svn: 115603

with the 32-bit stuff.

llvm-svn: 115602

llvm-svn: 115601

llvm-svn: 115600

llvm-svn: 115599

llvm-svn: 115598

llvm-svn: 115597

control flow stuff out to X86InstrControl.td.  Move
some compiler pseudo instructions and Pat<> patterns
out to X86InstrCompiler.td

llvm-svn: 115596

llvm-svn: 115591

else in X86), and add support for pavgusb.  This is apparently the
only instruction (other than movsx) that is preventing ffmpeg from building
with clang.

If someone else is interested in banging out the rest of the 3DNow! 
instructions, it should be quite easy now.

llvm-svn: 115466

llvm-svn: 115429

reflection, this isn't going to achieve the purpose I intended it for.  Back to the drawing board!

llvm-svn: 114710

llvm-svn: 114703

x86-32: 32-bit calls were named "call" not "calll".  64-bit calls were correctly
named "callq", so this only impacted x86-32.

This fixes rdar://8456370 - llvm-mc rejects 'calll'

This also exposes that mingw/64 is generating a 32-bit call instead of a 64-bit call,
I will file a bugzilla.

llvm-svn: 114534

llvm-svn: 114529

llvm-svn: 114515

by having X86DAGToDAGISel::SelectAddr get passed in the parent node
of the operand match (the load/store/atomic op) and having it get
the address space from that, instead of having special FS/GS addr
mode operations that require duplicating the entire instruction set
to support.

This makes FS and GS relative accesses *far* more predictable and
work much better.  It also simplifies the X86 backend a bit, more
to come.

There is still a pending issue with nodes like ISD::PREFETCH and
X86ISD::FLD, which really should be MemSDNode's but aren't.

llvm-svn: 114491

llvm-svn: 114468

What a weird instruction.

llvm-svn: 114190

add sldt GR32, which isn't documented in the intel manual
but which gas accepts.  Part of rdar://8418316

llvm-svn: 113938

llvm-svn: 113422

llvm-svn: 113350

fixing rdar://8403974

llvm-svn: 113349

rdar://8061602

llvm-svn: 113343

llvm-svn: 113259

allowing unsigned 8-bit operands.  This fixes rdar://8208481

llvm-svn: 113182

llvm-svn: 113158

llvm-svn: 112921

Mark _alloca call as clobberring EFLAGS, otherwise some DCE might remove
other flags-clobberring stuff (e.g. cmp instructions) occuring after
_alloca call.

llvm-svn: 112034

x86 int and int3 instructions.  Patch by Peter Housel!

llvm-svn: 111831