only remaining modifier is "subreg".

llvm-svn: 75516

llvm-svn: 75512

llvm-svn: 75416

Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.

llvm-svn: 75379

never be generated.

llvm-svn: 75305

llvm-svn: 75298

llvm-svn: 75276

add a couple of predicates to test for "stub style pic in PIC mode" and "stub style pic in dynamic-no-pic" mode.

llvm-svn: 75273

tomorrow.

llvm-svn: 75245

gcc.apple/asm-block-13.c
gcc.apple/asm-block-57.c

llvm-svn: 75169

isel.

llvm-svn: 75117

llvm-svn: 75110

mode, instead of having asmprinter just "know" to print them.

llvm-svn: 75109

llvm-svn: 75108

llvm-svn: 75107

is incapable of lowering direct references to globals like this, zap the code.

llvm-svn: 75106

llvm-svn: 75105

asmprinter do it.

llvm-svn: 75104

llvm-svn: 75102

llvm-svn: 75088

llvm-svn: 75086

llvm-svn: 75083

llvm-svn: 75082

llvm-svn: 75080

llvm-svn: 75079

* remove some old code that was needed when we'd put ESP in the scale instead of 
  the base of some instructions.
* Fix a bug with the P modifier in inline asm that caused us to drop it.

llvm-svn: 75077

* remove some dead code: darwin doesn't support dllimport linkage.

llvm-svn: 75066

patch, instead of one I didn't.

llvm-svn: 74968

have the alignment be calculated up front, and have the back-ends obey whatever
alignment is decided upon.

This allows for future work that would allow for precise no-op placement and the
like.

llvm-svn: 74564

target-specific operand printing functionality.  Yay.

llvm-svn: 74379

llvm-svn: 74378

implementation primarily differs from the former in that the asmprinter
doesn't make a zillion decisions about whether or not something will be
RIP relative or not.  Instead, those decisions are made by isel lowering
and propagated through to the asm printer.  To achieve this, we:

1. Represent RIP relative addresses by setting the base of the X86 addr
   mode to X86::RIP.
2. When ISel Lowering decides that it is safe to use RIP, it lowers to
   X86ISD::WrapperRIP.  When it is unsafe to use RIP, it lowers to
   X86ISD::Wrapper as before.
3. This removes isRIPRel from X86ISelAddressMode, representing it with
   a basereg of RIP instead.
4. The addressing mode matching logic in isel is greatly simplified.
5. The asmprinter is greatly simplified, notably the "NotRIPRel" predicate
   passed through various printoperand routines is gone now.
6. The various symbol printing routines in asmprinter now no longer infer
   when to emit (%rip), they just print the symbol.

I think this is a big improvement over the previous situation.  It does have
two small caveats though: 1. I implemented a horrible "no-rip" modifier for
the inline asm "P" constraint modifier.  This is a short term hack, there is
a much better, but more involved, solution.  2. I had to xfail an 
-aggressive-remat testcase because it isn't handling the use of RIP in the
constant-pool reading instruction.  This specific test is easy to fix without
-aggressive-remat, which I intend to do next.

llvm-svn: 74372

Add x86 support for 'n' inline asm modifier. This will be handled target independently as part of MC work.

llvm-svn: 74336

llvm-svn: 74334

llvm-svn: 74328

llvm-svn: 74327

llvm-svn: 74316

llvm-svn: 74313

llvm-svn: 74310

llvm-svn: 74255