Remove special handling of implicit_def. Fix a couple more bugs in liveintervalanalysis and coalescer handling of implicit_def.

Note, isUndef marker must be placed even on implicit_def def operand or else the scavenger will not ignore it. This is necessary because -O0 path does not use liveintervalanalysis, it treats implicit_def just like any other def.

llvm-svn: 74601

llvm-svn: 74599

llvm-svn: 74598

llvm-svn: 74597

llvm-svn: 74596

llvm-svn: 74595

llvm-svn: 74594

llvm-svn: 74593

llvm-svn: 74592

llvm-svn: 74591

add some comments to MCSymbol header, make the ctor private so that only MCContext can create these.

llvm-svn: 74590

llvm-svn: 74589

to not have to create a temporary vector (in the API at least).  Patch by Jay Foad!

llvm-svn: 74584

pic mode.

llvm-svn: 74582

Handle IMPLICIT_DEF with isUndef operand marker, part 2. This patch moves the code to annotate machineoperands to LiveIntervalAnalysis. It also add markers for implicit_def that define physical registers. The rest, is just a lot of details.

llvm-svn: 74580

 - This more or less amounts to a revert of r65379. I'm curious to know what
   happened that caused this variable to become unused.

llvm-svn: 74579

llvm-svn: 74577

llvm-svn: 74574

llvm-svn: 74573

llvm-svn: 74572

immediates.

llvm-svn: 74568

llvm-svn: 74566

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

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

llvm-svn: 74555

llvm-svn: 74553

llvm-svn: 74551

in APIntTest.cpp.

llvm-svn: 74550

llvm-svn: 74549

Add 256-bit memory operand support.

llvm-svn: 74548

llvm-svn: 74543

llvm-svn: 74542

llvm-svn: 74538

llvm-svn: 74537

Avoid unnecessary duplication of operand 0 of X86::FpSET_ST0_80. This duplication would
cause one register to remain on the stack at the function return.

llvm-svn: 74534

llvm-svn: 74531

 - Apologies in advance for the noise.

llvm-svn: 74530

llvm-svn: 74529

llvm-svn: 74527

See http://msdn.microsoft.com/en-us/library/ms686818(VS.85).aspx

Patch by Olaf Krzikalla!

llvm-svn: 74526