llvm-svn: 118725

for a given instruction into a helper function.

llvm-svn: 118723

llvm-svn: 118722

type is insufficient for, or incompatible with, the current query.

llvm-svn: 118721

llvm-svn: 118720

Probably it should just be 1, but compromise with 3.

llvm-svn: 118718

references. For example, this allows gvn to eliminate the load in
this example:

  void foo(int n, int* p, int *q) {
    p[0] = 0;
    p[1] = 1;
    if (n) {
      *q = p[0];
    }
  }

llvm-svn: 118714

llvm-svn: 118709

Whenever splitting wants to insert a copy, it checks if the value can be
rematerialized cheaply instead.

Missing features:
- Delete instructions when all uses have been rematerialized.
- Truncate live ranges to the remaining uses after rematerialization.

llvm-svn: 118702

benchmarks hitting an assertion.
Adds LiveIntervalUnion::collectInterferingVRegs.
Fixes "late spilling" by checking for any unspillable live vregs among
all physReg aliases.

llvm-svn: 118701

llvm-svn: 118699

instructions instead of hard-coding operand numbers.

llvm-svn: 118698

their comments.

llvm-svn: 118696

nodes can be used in loops, this could result in infinite looping
if there is no recursion limit, so add such a limit.  It is also
used for the SelectInst case because in theory there could be an
infinite loop there too if the basic block is unreachable.

llvm-svn: 118694

llvm-svn: 118693

it, and to be consistent.

llvm-svn: 118692

double quoting of ObjC symbol names in constant pool entries.

rdar://8652107

llvm-svn: 118688

arbitrary memory into a helper function, and adjust some comments.

llvm-svn: 118687

indivudal members holding the same data, to clarify the relationship
between NonLocalDepResult and NonLocalDepEntry.

llvm-svn: 118686

Store the flags needed to disable optimizations and to emit LLVM-IR depending on
the version of llvm-gcc used.

llvm-svn: 118684

llvm-svn: 118683

llvm-svn: 118682

llvm-svn: 118681

The simplifications performed here never create new instructions, they
only return existing instructions (or a constant), and so are always a
win.  In theory they should transform (for example)
  %z = and i32 %x, %y
  %s = select i1 %cond, i32 %y, i32 %z
  %r = and i32 %x, %s
into
  %r = and i32 %x, y
but in practice they get into a fight with instcombine, and lose.
Unfortunately instcombine does a poor job in this case.  Nonetheless
I'm committing this transform to make it easier to discuss what to
do to make peace with instcombine.

llvm-svn: 118679

Win32/Process.inc: [PR8527] Process::FileDescriptorIsDisplayed(fd) should not check by FILE_TYPE_CHAR. It must be better to check it with Console API.

The special file "NUL" is FILE_TYPE_CHAR with GetFileType(h). It was treated as display device and discarding output to NUL had failed. (eg. opt -o nul)

llvm-svn: 118678

of InputData.

llvm-svn: 118677

VariantKind marker to indicate the additional information necessary. Update
MC to handle the new Kinds. rdar://8647623

llvm-svn: 118671

llvm-svn: 118668

llvm-svn: 118667

order to reduce ((x<<30)>>24) to x<<6, check the
correct bits.  PR 8547.

llvm-svn: 118665

llvm-svn: 118662

llvm-svn: 118661

chaining and simplify FunctionAttrs' GetModRefBehavior logic.

llvm-svn: 118660

llvm-svn: 118656

llvm-svn: 118653

llvm-svn: 118652

earlier. Implicit bool -> int conversions are evil!

llvm-svn: 118651

llvm-svn: 118648

llvm-svn: 118645

llvm-svn: 118644