Model inline asm constraint which ties an input to an output register as machine operand TIED_TO constraint. This eliminated the need to pre-allocate registers for these. This also allows register allocator can eliminate the unneeded copies.

llvm-svn: 67512

Do not fold away subreg_to_reg if the source register has a sub-register index. That means the source register is taking a sub-register of a larger register. e.g. On x86
%RAX<def> = ...
%RAX<def> = SUBREG_TO_REG 0, %EAX:3<kill>, 3
The first def is defining RAX, not EAX so the top bits were not zero-extended.

llvm-svn: 67511

llvm-svn: 67510

were when we came around, not to their default handler.  This 
should fix PR3848

llvm-svn: 67509

llvm-svn: 67508

llvm-svn: 67507

Evaluate for __extension__ and __builtin_choose_expr.

llvm-svn: 67506

llvm-svn: 67505

Do not recommend llvm::OStream anymore.  Use raw_ostream or MemoryBuffer.

llvm-svn: 67504

llvm-svn: 67503

i8 return values.

llvm-svn: 67502

llvm-svn: 67501

llvm-svn: 67500

llvm-svn: 67499

llvm-svn: 67498

llvm-svn: 67497

llvm-svn: 67496

Recognize rvalue references in C++03, but complain about them. This leads to far better error recovery.

llvm-svn: 67495

incompatibilities in assignments from other pointer incompatibilities.  
Based off of the patch in PR3342.  (This doesn't implement -Wno-pointer-sign,
but I don't know the driver code very well.)

llvm-svn: 67494

situation should never occur now that arguments are parsed correctly.

llvm-svn: 67493

llvm-svn: 67492

attempting to illegally modify a BlockDeclRefExpr.

llvm-svn: 67491

llvm-svn: 67490

isObjCObjectPointerType to work with qualified types.  Adjust test for 
changes.

If the SemaExpr changes are wrong or break existing code, feel free to 
delete the "ExprTy.addConst();" line and revert my changes to 
test/Sema/block-literal.c.

llvm-svn: 67489

llvm-svn: 67488

llvm-svn: 67487

llvm-svn: 67486

llvm-svn: 67485

functionality, fixing a crash on the attached testcase.  Eliminate the
BuiltinFunctions cache, as it can contain dangling pointers.  This fixes
a bunch of valgrind errors on test/CodeGen/builtins.c

llvm-svn: 67484

llvm-svn: 67483

the end of the module.

llvm-svn: 67482

llvm-svn: 67481

llvm-svn: 67480

some tests into the alias.c file.

llvm-svn: 67479

No intended functionality change.

llvm-svn: 67478

llvm-svn: 67477

llvm-svn: 67476

to something like:
define void @bar(%struct.foo* noalias sret %agg.result) nounwind {
instead of:
define void @bar(%struct.foo* noalias sret %agg.result, ...) nounwind {

llvm-svn: 67475

llvm-svn: 67474

llvm-svn: 67473