some builtins will rely on target knowledge.

llvm-svn: 97693

a patch my Micah Villmow for PR6465.

llvm-svn: 97692

llvm-svn: 97691

llvm-svn: 97690

Fix a logic error. An instruction that has a live physical register def cannot be CSE'ed, but it *can* be used to replace a common subexpression.

llvm-svn: 97688

llvm-svn: 97687

llvm-svn: 97686

llvm-svn: 97685

llvm-svn: 97684

llvm-svn: 97683

llvm-svn: 97682

Move MachineInstrExpressionTrait::getHashValue() out of line so it can skip over only virtual register defs. This matches what isEqual() is doing.

llvm-svn: 97680

llvm-svn: 97679

Re-apply r97667 but with a little bit of thought put into the patch. This implements a special DenseMapInfo trait for DenseMap<MachineInstr*> that compare the value of the MachineInstr rather than the pointer value. Since the hashing and equality test functions ignore defs it's useful for doing CSE kind optimization.

llvm-svn: 97678

llvm-svn: 97677

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

according to A8.6.105 MUL Encoding T1.

llvm-svn: 97675

nested-name-specifier. For example, this allows member access in
diamond-shaped hierarchies like:

  struct Base {
    void Foo();
    int Member;
  };

  struct D1 : public Base {};
  struct D2 : public Base {};

  struct Derived : public D1, public D2 { }

  void Test(Derived d) {
    d.Member = 17; // error: ambiguous cast from Derived to Base
    d.D1::Member = 17; // error: okay, modify D1's Base's Member
  }

Fixes PR5820 and <rdar://problem/7535045>. Also, eliminate some
redundancy between Sema::PerformObjectMemberConversion() and
Sema::PerformObjectArgumentInitialization() -- the latter now calls
the former.

llvm-svn: 97674

llvm-svn: 97673

((id)cat)->isa. Fixes radar 7709015.

llvm-svn: 97672

XFAIL and already tracked in bugzilla.

llvm-svn: 97671

llvm-svn: 97670

llvm-svn: 97669

llvm-svn: 97667

Add in c header path for various linuxes as well.

Partial patch from Christian Adåker!

llvm-svn: 97666

CSE and recursive RAUW calls delete a node from the use list,
invalidating the use list iterator. There's currently no known
way to reproduce this in an unmodified LLVM, however there's no
fundamental reason why a SelectionDAG couldn't be formed which
would trigger this case.

llvm-svn: 97665

Machine CSE work in progress. It's doing some CSE now. But implicit def of physical registers are getting in the way.

llvm-svn: 97664

llvm-svn: 97663

and is too old to really care about the performance of the generated 
compiler.

llvm-svn: 97662

llvm-svn: 97661

Fix PR6444, note still doesn't compile libgcc2 all the way, but fixes that error.  May not fix it in an ABI complient way.  It wasn't clear what gcc does

llvm-svn: 97660

llvm-svn: 97659

fix a code gen crash. This is WIP as not
all ABI cases are covered (there is a FIXME to 
this effect). Fixes radar 7696748.

llvm-svn: 97658

--- Reverse-merging r97592 into '.':
U    lib/CodeGen/TargetLoweringObjectFileImpl.cpp

llvm-svn: 97657

llvm-svn: 97656

and STRHT for disassembly only.

llvm-svn: 97655

llvm-svn: 97654

why the front-end is calculating the argument to llvm.eh.dwarf.cfa().

llvm-svn: 97653

Scope accelerator.

llvm-svn: 97652

entry we're about to process is obviously going to fail, don't
bother pushing a scope only to have it immediately be popped.
This avoids a lot of scope stack traffic in common cases.

Unfortunately, this requires duplicating some of the predicate
dispatch.  To avoid duplicating the actual logic I pulled each
predicate out to its own static function which gets used in
both places.

llvm-svn: 97651

to test clang_getCursorLinkage()

llvm-svn: 97648