create symbols.  It is extremely error prone and a source of a lot
of the remaining integrated assembler bugs on x86-64.

This fixes rdar://7807601.

llvm-svn: 99902

MC: Fix refacto in MCExpr evaluation, I mistakenly replaced a fragment address with a symbol address.
 - This fixes the integrated-as nightly test regressions.

llvm-svn: 99466

llvm-svn: 99380

llvm-svn: 99350

llvm-svn: 99348

MCValue: Change to holding MCSymbolRefExprs instead of MCSymbols, we will need this for accessing to symbol modifiers.

llvm-svn: 98791

 - Although it would be nice to allow this decoupling, the assembler needs to be able to reason about MCSymbolRefExprs in too many places to make this viable. We can use a target specific encoding of the variant if this becomes an issue.
 - This patch also extends llvm-mc to support parsing of the modifiers, as opposed to lumping them in with the symbol.

llvm-svn: 98592

llvm-svn: 98464

llvm-svn: 98380

MC/Mach-O: Implement "absolutizing" semantics of .set, by evaluating the assembly time value of variables.

llvm-svn: 98241

MC: Sketch initial MCAsmLayout class, which encapsulates the current layout of an assembly file. The MCAsmLayout is also available for use by MCExpr::EvaluateAs{Absolute,Relocatable}, to allow target specific hooks and "absolutizing" of symbols.

llvm-svn: 98227

llvm-svn: 98124

Document that MCExpr::Div, Mod, and the comparison operators are all
signed operators.

Document that the comparison operators' results are target-dependent.

Document that the behavior of shr is target-dependent.

llvm-svn: 95619

llvm-svn: 95587

llvm-svn: 95559

llvm-svn: 93699

remove it and change all the code that prints MCSymbols to use 
<< instead, which is much simpler and cleaner.

llvm-svn: 93695

llvm-svn: 92630

llvm-svn: 86251

llvm-svn: 84233

llvm-svn: 84229

llvm-svn: 84228

the same time.

llvm-svn: 81984

the new asmprinter.

llvm-svn: 81269

llvm-svn: 81203

llvm-svn: 81202

llvm-svn: 81201

and fix a few things using << on MCSymbols to use ->print(). No
functionality change other than unbreaking my previous patch.

llvm-svn: 80890

llvm-svn: 80570

llvm-mc: Switch MCExpr construction to using static member functions, and taking the MCContext (which now owns all MCExprs).

llvm-svn: 80569

llvm-svn: 80567

llvm-svn: 80078

evaluation.

llvm-svn: 78692

llvm-svn: 74596

allowed to be undefined when the expression is seen, we cannot enforce the
same-section requirement until the entire assembly file has been seen.

llvm-svn: 74565

llvm-svn: 74529

legally negate an MCValue.

llvm-svn: 74497

llvm-svn: 74496

(missed files).

llvm-svn: 74450