llvm-svn: 115010

Assign bitwise binary instructions different itinerary classes from ALU instructions such as add / sub.

llvm-svn: 115008

llvm-svn: 114780

Fix scheduling itinerary for pseudo mov immediate instructions which expand into two real instructions.

llvm-svn: 114766

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

llvm-svn: 114710

llvm-svn: 114706

llvm-svn: 114705

llvm-svn: 114703

(yet) recognize the 'trap' mnemonic, so we use .short/.long to emit the
opcode directly. On Darwin, however, we do want the mnemonic for more
readable assembly code and better disassembly.

Adjust the .td file to use the 'trap' mnemonic and handle using the binutils
workaround in the assembly printer. Also tweak the formatting of the opcode
values to make them consistent between the MC printer and the old printer.

llvm-svn: 114679

passed the root of the match, even though only a few patterns
actually needed this (one in X86, several in ARM [which should
be refactored anyway], and some in CellSPU that I don't feel 
like detangling).   Instead of requiring all ComplexPatterns to
take the dead root, have targets opt into getting the root by
putting SDNPWantRoot on the ComplexPattern.

llvm-svn: 114471

llvm-svn: 113584

llvm-svn: 113435

the testcases should be merged.

llvm-svn: 112711

int x(int t) {
  if (t & 256)
    return -26;
  return 0;
}

We generate this:

     tst.w   r0, #256
     mvn     r0, #25
     it      eq
     moveq   r0, #0

while gcc generates this:

     ands    r0, r0, #256
     it      ne
     mvnne   r0, #25
     bx      lr

Scandalous really!

During ISel time, we can look for this particular pattern. One where we have a
"MOVCC" that uses the flag off of a CMPZ that itself is comparing an AND
instruction to 0. Something like this (greatly simplified):

  %r0 = ISD::AND ...
  ARMISD::CMPZ %r0, 0         @ sets [CPSR]
  %r0 = ARMISD::MOVCC 0, -26  @ reads [CPSR]

All we have to do is convert the "ISD::AND" into an "ARM::ANDS" that sets [CPSR]
when it's zero. The zero value will all ready be in the %r0 register and we only
need to change it if the AND wasn't zero. Easy!

llvm-svn: 112664

llvm-svn: 112654

Make ARM add rN, sp, #imm instructions rematerializable. That's how the address of locals is calculated, so this should
help relieve register pressure a bit. Recalculating the local address is
almost always going to be better than spilling.

llvm-svn: 112503

llvm-svn: 112421

llvm-svn: 112394

llvm-svn: 112206

llvm-svn: 111277

llvm-svn: 111266

printing "lsl #0".  This fixes the remaining parts of pr7792.  Make
corresponding changes for encoding/decoding these instructions.

llvm-svn: 111251

that the high halfword is zero.  The shift need not be exactly 16 bits.

llvm-svn: 111196

instructions besides saturate instructions.  No functional changes.

llvm-svn: 111168

llvm-svn: 111154

the memory barrier variants (other than 'SY' full system domain read and write)
are treated as one instruction with option operand.

llvm-svn: 110951

Added two test cases to arm-tests.txt.

llvm-svn: 110880

instruction opcode.  This also fixes part of PR7792.

llvm-svn: 110875

llvm-svn: 110787

  memory and synchronization barrier dmb and dsb instructions.
- Change instruction names to something more sensible (matching name of actual
  instructions).
- Added tests for memory barrier codegen.

llvm-svn: 110785

llvm-svn: 110761

(I discovered 2 more copies of the ARM instruction format list, bringing the
total to 4!!  Two of them were already out of sync.  I haven't yet gotten into
the disassembler enough to know the best way to fix this, but something needs
to be done.)  Add support for encoding these instructions.

llvm-svn: 110754

llvm-svn: 110363

Partial fix for PR7792.

llvm-svn: 110361

Partial fix for PR7792.

llvm-svn: 110358

the jtblock_operand print methods.  This avoids extra newlines in the
disassembler's output.  PR7757.

llvm-svn: 109948

llvm-svn: 109813

Add intrinsics __builtin_arm_qadd & __builtin_arm_qsub to allow access to the QADD & QSUB instructions.
Behave identically to __qadd & __qsub RealView instruction intrinsics.

llvm-svn: 109770

ARM mode version of r109693. Remove incorrect substitution pattern for UXTB16. It wrongly assumed the input shift was actually a rotate. rdar://8240138

llvm-svn: 109696

and a combine pattern to use it for setting a bit-field to a constant
value. More to come for non-constant stores.

llvm-svn: 108570