commit code in clang that uses this shortly.

llvm-svn: 161252

rdar://11366674

llvm-svn: 161251

llvm-svn: 161250

packages for particular uses.

llvm-svn: 161246

llvm-svn: 161242

This functionality was added before we started running
DeadMachineInstructionElim on all targets. It serves no purpose now.

llvm-svn: 161241

this makes this hack a bit more bearable
for poor souls who need to pass custom
preprocessor flags to the build process

llvm-svn: 161240

to store additional flag options since too many things can
and do override CPPFLAGS. Also, this is exported, unlike CPPFLAGS
so it can be actually used elsewhere. This should enable us
to remove the AC_SUBSTs in the intel checks, but I have no way
of testing it.

llvm-svn: 161233

Fast isel doesn't currently have support for translating builtin function
calls to target instructions.  For embedded environments where the library
functions are not available, this is a matter of correctness and not
just optimization.  Most of this patch is just arranging to make the
TargetLibraryInfo available in fast isel.  <rdar://problem/12008746>

llvm-svn: 161232

This just provides a way to look up a LibFunc::Func enum value for a
function name.  Alphabetize the enums and function names so we can use a
binary search.

llvm-svn: 161231

llvm-svn: 161230

llvm-svn: 161229

The "findUsedStructTypes" method is very expensive to run. It needs to be
optimized so that LTO can run faster. Splitting this method out of the Module
class will help this occur. For instance, it can keep a list of seen objects so
that it doesn't process them over and over again.

llvm-svn: 161228

but somehow managed to be dropped later.

Patch by Karel Gardas.

llvm-svn: 161226

llvm-svn: 161223

llvm-svn: 161222

llvm-svn: 161220

test files.

llvm-svn: 161219

Now that TableGen supports references to NAME w/o it being explicitly
referenced in the definition's own name, use that to simplify
assembly InstAlias definitions in multiclasses.

llvm-svn: 161218

Add more comments and use early returns to reduce nesting in isLoadFoldable.
Also disable folding for V_SET0 to avoid introducing a const pool entry and
a const pool load.

rdar://10554090 and rdar://11873276

llvm-svn: 161207

llvm-svn: 161206

yaml2obj takes a textual description of an object file in YAML format
and outputs the binary equivalent. This greatly simplifies writing
tests that take binary object files as input.

llvm-svn: 161205

Previously, def NAME values were only populated, and references to NAME
resolved, when NAME was referenced in the 'def' entry of the multiclass
sub-entry. e.g.,
multiclass foo<...> {
  def prefix_#NAME : ...
}

It's useful, however, to be able to reference NAME even when the default
def name is used. For example, when a multiclass has 'def : Pat<...>'
or 'def : InstAlias<...>' entries which refer to earlier instruction
definitions in the same multiclass. e.g.,
multiclass myMulti<RegisterClass rc> {
  def _r : myI<(outs rc:$d), (ins rc:$r), "r $d, $r", []>;

  def : InstAlias<\"wilma $r\", (!cast<Instruction>(NAME#\"_r\") rc:$r, rc:$r)>;
}

llvm-svn: 161198

Whenever both instruction depths and instruction heights are known in a
block, it is possible to compute the length of the critical path as
max(depth+height) over the instructions in the block.

The stored live-in lists make it possible to accurately compute the
length of a critical path that bypasses the current (small) block.

llvm-svn: 161197

of MipsTargetMachine.cpp.

llvm-svn: 161191

test o32_cc_vararg.ll.

llvm-svn: 161189

Don't cause regunit intervals to be computed just to verify them. Only
check the already cached intervals.

llvm-svn: 161183

LiveRangeEdit::eliminateDeadDefs() can delete a dead instruction that
reads unreserved physregs. This would leave the corresponding regunit
live interval dangling because we don't have shrinkToUses() for physical
registers.

Fix this problem by turning the instruction into a KILL instead of
deleting it. This happens in a landing pad in
test/CodeGen/X86/2012-05-19-CoalescerCrash.ll:

  %vreg27<def,dead> = COPY %EDX<kill>; GR32:%vreg27

becomes:

  KILL %EDX<kill>

An upcoming fix to the machine verifier will catch problems like this by
verifying regunit live intervals.

This fixes PR13498. I am not including the test case from the PR since
we already have one exposing the problem once the verifier is fixed.

llvm-svn: 161182

This trivial helper function tests if a register contains a register
unit. It is similar to regsOverlap(), but with asymmetric arguments.

llvm-svn: 161180

llvm-svn: 161179

llvm-svn: 161178

llvm-svn: 161177

llvm-svn: 161171

llvm-svn: 161164

llvm-svn: 161163

llvm-svn: 161162

llvm-svn: 161161

llvm-svn: 161159

FIXME: Could +avx be checked here too?
llvm-svn: 161156

  - Relax to match even if epilogue (pop %ebp) were emitted.
  - Assume the return value is stored to %xmm0.

llvm-svn: 161155