implicit defs get added to the end of machine instrs sometimes.  Scan the whole instruction for the metadata operand instead of assuming it will be at the end of the instruction.

llvm-svn: 100792

There is no need to remember labels identifying regions marked by such instructions in each scope.

llvm-svn: 100781

llvm-svn: 100771

llvm-svn: 100769

llvm-svn: 100768

llvm-svn: 100756

llvm-svn: 100751

llvm-svn: 100742

so the user at least knows what inline asm is a problem.  For example:

error: inline asm not supported yet: don't know how to handle tied indirect register inputs
pr8788-1.c:14:10: note: generated from here
    asm ("\n" : "+r" (stack->regs)
         ^

Instead of:
fatal error: error in backend: Don't know how to handle tied indirect register inputs yet!

llvm-svn: 100731

llvm-svn: 100725

llvm-svn: 100724

and use it in one place in inline asm handling stuff.  Before
we'd generate this for an invalid modifier letter:

$ clang asm.c -c -o t.o
fatal error: error in backend: Invalid operand found in inline asm: 'abc incl    ${0:Z}'
INLINEASM <es:abc incl    ${0:Z}>, 10, %EAX<def>, 2147483657, %EAX, 14, %EFLAGS<earlyclobber,def,dead>, <!-1>


Now we generate this:

$ clang asm.c -c -o t.o
error: invalid operand in inline asm: 'incl    ${0:Z}'
asm.c:3:12: note: generated from here
  __asm__ ("incl    %Z0" : "+r" (X));
           ^
1 error generated.

This is much better but still admittedly not great ("why" is the operand 
invalid??), codegen should try harder with its diagnostics :)

llvm-svn: 100723

llvm-svn: 100709

llvm-svn: 100703

llvm-svn: 100700

It is not ready for public yet.

llvm-svn: 100673

llvm-svn: 100645

llvm-svn: 100644

llvm-svn: 100640

llvm-svn: 100639

llvm-svn: 100638

MachineOperand::isIdenticalTo wasn't handling metadata operands.

llvm-svn: 100636

llvm-svn: 100620

TimePassesIsEnabled. This should allow make check to pass.

llvm-svn: 100618

llvm-svn: 100616

llvm-svn: 100615

llvm-svn: 100610

llvm-svn: 100609

Have the asmprinter use the mdnode to scavenge a source location if
present.  Document this nonsense in langref.

llvm-svn: 100607

llvm-svn: 100606

1. Introduce some enums and accessors in the InlineAsm class
   that eliminate a ton of magic numbers when handling inline
   asm SDNode.
2. Add a new MDNodeSDNode selection dag node type that holds
   a MDNode (shocking!)
3. Add a new argument to ISD::INLINEASM nodes that hold !srcloc
   metadata, propagating it to the instruction emitter, which
   drops it.

No functionality change.

llvm-svn: 100605

into AsmPrinter.  Target-dependent form is still generated
by FastISel and still handled in X86 code.

llvm-svn: 100596

llvm-svn: 100592

Do not emit specification DIE with DW_AT_specification attribute for member functions of a funcation local class. This trips gdb's partial scan of DIEs at load time. Fixes Radar 7833483.

llvm-svn: 100586

solution.  The only reason these don't fire with gcc-4.2 is that gcc turns off
part of -Wsign-compare in C++ on accident.

llvm-svn: 100581

llvm-svn: 100578

There is probably a more elegant way to do this.

llvm-svn: 100573

to a SDNode that didn't have code generated for it.

llvm-svn: 100566

llvm-svn: 100563

llvm-svn: 100532