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

llvm-svn: 114710

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

llvm-svn: 113867

llvm-svn: 113849

instruction in the class would be decoded to. Or zero if the number of
uOPs must be determined dynamically.

This will be used to determine the cost-effectiveness of predicating a
micro-coded instruction.

llvm-svn: 113513

llvm-svn: 113289

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: 110710

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

llvm-svn: 109948

being moved around away from the jump table it references. rdar://8104340

llvm-svn: 106483

llvm-svn: 105350

llvm-svn: 104974

make sure accesses to set up the jmpbuf don't get moved after it by the scheduler. Add a missing \n.

llvm-svn: 104967

an alloca() or an llvm.stackrestore(). rdar://8031573

llvm-svn: 104900

llvm-svn: 104661

Followups: docs patch for the builtin and eh.sjlj.setjmp cleanup to match
longjmp.

llvm-svn: 104419

t2LEApcrel and tLEApcrel are re-materializable. This makes it possible to hoist more loads during machine LICM.

llvm-svn: 104115

Mark pattern-less mayLoad / mayStore instructions neverHasSideEffects. These do not have other un-modeled side effects.

llvm-svn: 104111

Mark a few more pattern-less instructions with neverHasSideEffects. This is especially important on instructions like t2LEApcreal which are prime candidate for machine LICM.

llvm-svn: 104102

Obvious in retrospect but not fun to debug.

llvm-svn: 103969

llvm-svn: 103903

Temporary emit it as raw bytes until it will be added to binutils as well.

llvm-svn: 103878

llvm-svn: 103459

need them.

llvm-svn: 98937

instructions for ld/st with writeback, the flag is completely redundant.

llvm-svn: 98643

writebacks to the address register.  This gets rid of the hack that the
first register on the list was the magic writeback register operand.  There
was an implicit constraint that if that operand was not reg0 it had to match
the base register operand.  The post-RA scheduler's antidependency breaker
did not understand that constraint and sometimes changed one without the
other.  This also fixes Radar 7495976 and should help the verifier work
better for ARM code.

There are now new ld/st instructions explicit writeback operands and explicit
constraints that tie those registers together.

llvm-svn: 98409

operands into their own PrintMethod, in order not to pollute the printOperand()
impl with disassembly only Imm modifiers.

llvm-svn: 98172

MULS <Rdm>, <Rn>, <Rdm>

according to A8.6.105 MUL Encoding T1.

llvm-svn: 97675

SMMULR, SMMLAR, SMMLSR, TBB, TBH, and 16-bit Thumb instruction CPS for
disassembly only.

llvm-svn: 97573

llvm-svn: 97348

WFI, SEV, SETEND.

llvm-svn: 97149

llvm-svn: 97105

llvm-svn: 97098

126.gcc nightly tests. These failures uncovered latent bugs that machine DCE
could remove one half of a stack adjust down/up pair, causing PEI to assert.
This update fixes that, and the tests now pass.

llvm-svn: 96822

llvm-svn: 96393

llvm-svn: 96388

llvm-svn: 95884

tMOVCCi pattern only valid for low registers, as the Thumb1 mov immediate to
register instruction only works with low registers. Allowing high registers
for the instruction resulted in the assembler choosing the wide (32-bit)
encoding for the mov, but LLVM though the instruction was only 16 bits wide,
so offset calculations for constant pools became incorrect, leading to
out of range constant pool entries.

llvm-svn: 95686

llvm-svn: 95603