More machine LICM work. It now tracks register pressure for path from preheader to current BB and use the information determine whether hoisting is worthwhile.

llvm-svn: 116654

llvm-svn: 116653

ARMCodeEmitter::emitMiscInstruction!

llvm-svn: 116644

llvm-svn: 116640

forwarding is implemented with a load/store pair rather than a memcpy.

llvm-svn: 116637

llvm-svn: 116635

spaces gives tests fits and shell escaping is an art best left to jabberwockies.

llvm-svn: 116632

llvm-svn: 116628

llvm-svn: 116625

llvm-svn: 116622

llvm-svn: 116612

llvm-svn: 116611

llvm-svn: 116604

scheduler may reorder loads from them before the stores and other such
badness. PR8347. Patch by David Meyer

llvm-svn: 116602

llvm-svn: 116601

llvm-svn: 116600

KillTheDoctor: Fix 2008 build. I'm actually surprised 2010 defines all of these, many are non-standard posix/unix extensions.

llvm-svn: 116597

llvm-svn: 116594

A CHECK-NOT pattern without a following CHECK pattern simply checks that the
pattern doesn't match before the end of the input file.

You can even have only CHECK-NOT patterns to check that strings appear nowhere
in the input file.

llvm-svn: 116592

an explicit def. Make sure to capture that properly. rdar://8556556

llvm-svn: 116591

llvm-svn: 116588

llvm-svn: 116581

llvm-svn: 116580

map.

llvm-svn: 116579

llvm-svn: 116566

have been printed with the "S" modifier after the predicate.  With ARM's
unified syntax, they are supposed to go in the other order.  We fixed this
for Thumb when we switched to unified syntax but missed changing it for
ARM.  Apparently we don't generate these instructions often because no one
noticed until now.  Thanks to Bill Wendling for the testcase!

llvm-svn: 116563

llvm-svn: 116560

llvm-svn: 116557

llvm-svn: 116550

llvm-svn: 116547

All registers created during splitting or spilling are assigned to the same
stack slot as the parent register.

When splitting or rematting, we may not spill at all. In that case the stack
slot is still assigned, but it will be dead.

llvm-svn: 116546

splitting or spillling, and to help with rematerialization.

Use LiveRangeEdit in InlineSpiller and SplitKit. This will eventually make it
possible to share remat code between InlineSpiller and SplitKit.

llvm-svn: 116543

llvm-svn: 116540

are just forms of that instruction).

llvm-svn: 116538

llvm-svn: 116537

and let the ARMExpandPseudoInsts pass fix them up into the real (MOVs)
instruction form.

llvm-svn: 116534

llvm-svn: 116533

llvm-svn: 116516

pseudonym.

llvm-svn: 116512

Always use binary mode for output stream. This is important to prevent unwanted end of line conversion on Windows. Should not affect Unix where O_BINARY is not defined. This fix /clang/test/lexer/preamble.c XFAIL on WIN32.

llvm-svn: 116509