based what flag to set on whether it was already marked as
"isRematerializable". If there was a further check to determine if it's "really"
rematerializable, then I marked it as "mayHaveSideEffects" and created a check
in the X86 back-end similar to the remat one.

llvm-svn: 45132

llvm-svn: 45128

llvm-svn: 45075

X86CodeEmitter.cpp:378: failed assertion `0 && "Immediate size not set!"'

I *think* this is right, but Evan, please verify.  It also looks like
CMPSDrr and maybe others are missing this info.  Evan, plz investigate.

llvm-svn: 45074

llvm-svn: 45058

llvm-svn: 45041

Fix (mem) <-> low 64-bits of xmm bugs pointed out by David Greene. Mac OS X Leopard assembler recognizes movq.

llvm-svn: 45040

for parameter passing (only for that, on Darwin).

llvm-svn: 45038

llvm-svn: 45037

llvm-svn: 45036

llvm-svn: 45030

Fix ctlz and cttz. llvm definition requires them to return number of bits in of the src type when value is zero.

llvm-svn: 45029

llvm-svn: 45024

llvm-svn: 44970

Implicit def instructions, e.g. X86::IMPLICIT_DEF_GR32, are always re-materializable and they should not be spilled.

llvm-svn: 44960

SelectionDAG::getConstant, in the same way as vector floating-point
constants. This allows the legalize expansion code for @llvm.ctpop and
friends to be usable with vector types.

llvm-svn: 44954

llvm-svn: 44929

Lower a build_vector with all constants into a constpool load unless it can be done with a move to low part.

llvm-svn: 44921

llvm-svn: 44904

llvm-svn: 44869

possible before resorting to pextrw and pinsrw.
- Better codegen for v4i32 shuffles masquerading as v8i16 or v16i8 shuffles.
- Improves (i16 extract_vector_element 0) codegen by recognizing
  (i32 extract_vector_element 0) does not require a pextrw.

llvm-svn: 44836

llvm-svn: 44835

llvm-svn: 44820

llvm-svn: 44819

Use it for Darwin.

llvm-svn: 44818

These should probably be something like:

  CFI(".cfi_def_cfa_offset 16\n")

where CFI is defined to a noop on darwin and other platforms
that don't support those directives.

llvm-svn: 44803

All bad stuff from SSE version is implicitely inherited :)

llvm-svn: 44794

broken, because doesn't mark xmm regs properly

llvm-svn: 44793

This will allow us (theoretically) to unwind through JITer.
The code wasn't verified, so I'm pretty sure offsets are wrong :)

llvm-svn: 44792

llvm-svn: 44727

what 'Available' is, please add a comment near it and rename it
if appropriate.

llvm-svn: 44703

  isTriviallyReMaterializable -> hasNoSideEffects
  isReallyTriviallyReMaterializable -> isTriviallyReMaterializable

llvm-svn: 44702

llvm-svn: 44686

llvm-svn: 44676

Remove a bogus optimization. It's not possible to do a move to low element to a <8 x i16> or <16 x i8> vector.

llvm-svn: 44669

llvm-svn: 44637

the stored register is killed.

llvm-svn: 44600

llvm-svn: 44517

llvm-svn: 44479

llvm-svn: 44371