llvm-svn: 98288

llvm-svn: 98266

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

llvm-svn: 98241

 - Also, drop the current location part of AsmLayout, I think I prefer to implement this via explicit symbols.

llvm-svn: 98240

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: 98222

llvm-svn: 98187

llvm-svn: 98186

llvm-svn: 98167

semantic instead of syntactic.  This completes MCization of
darwin/x86[-64]!

llvm-svn: 98145

llvm-svn: 98124

llvm-svn: 98120

Add a new GetOrCreateTemporarySymbol method and a version that
takes a twine.

llvm-svn: 98118

 - I'm not sure why, but this is what 'as' does.

llvm-svn: 98115

llvm-svn: 98100

MC/Mach-O: For PCrel relocations, we need to compensate for the PCrel adjustment when determining if we need a scattered relocation.

llvm-svn: 98082

llvm-svn: 98081

llvm-svn: 98080

llvm-svn: 98028

llvm-svn: 98027

llvm-svn: 98017

llvm-svn: 97991

llvm-svn: 97984

llvm-svn: 97983

stuff to emit optimal nops in the right places.

llvm-svn: 97233

section with TextAlignFillValue and calls EmitCodeAlignment() instead of
calling EmitValueToAlignment().  This allows x86 assembly code to be aligned
with optimal nops.

llvm-svn: 97158

With the compiler changed to use EmitCodeAlignment() it does change the
functionality.  But X86 assembly code assembled with llvm-mc does not change
its output.  For that we will eventually change the assembler frontend to
detect a '.align x, 0x90' when used in a section that 'hasInstructions' and use
EmitCodeAlignment, but will wait until we have better target hooks.

llvm-svn: 96988

so that it doesn't break them when the code generator starts using it.

llvm-svn: 96966

to be aligned with optimal nops.  This patch does not change any functionality
and when the compiler is changed to use EmitCodeAlignment() it should also not
change the resulting output.  Once the compiler change is made and everything
looks good the next patch with the table of optimal X86 nops will be added to
WriteNopData() changing the output.  There are many FIXMEs in this patch which
will be removed when we have better target hooks (coming soon I hear).

llvm-svn: 96963

llvm-svn: 96809

llvm-svn: 96763

llvm-svn: 96762

llvm-svn: 96532

cases that are not part of the enum.

llvm-svn: 96477

--
ddunbar@ozzy:tmp$ clang -m32 -integrated-as hello.c && ./a.out
hello world!
--

llvm-svn: 96096

llvm-svn: 96095

llvm-svn: 96094

llvm-svn: 96093

MCAssembler: Switch MCFillFragment to only taking constant values. Symbolic expressions can always be emitted as data + fixups.

llvm-svn: 96092

llvm-svn: 96091