X86: Use StackRegister instead of FrameRegister in getFrameIndexReference (to generate debug info for local variables) if stack needs realignment

llvm-svn: 155917

Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore.

llvm-svn: 150878

X86. Modify the pass added in the previous patch to call this new
code.

This new prologues generated will call a libgcc routine (__morestack)
to allocate more stack space from the heap when required

Patch by Sanjoy Das.

llvm-svn: 138812

unwind encoding for that function. This simply crawls through the prolog looking
for machine instrs marked as "frame setup". It can calculate from these what the
compact unwind should look like.

This is currently disabled because of needed linker support. But initial tests
look good.

llvm-svn: 135922

llvm-svn: 135634

better location welcome).

llvm-svn: 135438

llvm-svn: 134595

llvm-svn: 134577

Target/X86: Tweak allocating shadow area (aka home) on Win64. It must be enough for caller to allocate one.

llvm-svn: 124949

Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there.

llvm-svn: 123170

llvm-svn: 120229

llvm-svn: 120228

llvm-svn: 119904

llvm-svn: 119754

llvm-svn: 119740

First step of huge frame-related refactoring: move emit{Prologue,Epilogue} out of TargetRegisterInfo to TargetFrameInfo, which is definitely much better suitable place

llvm-svn: 119097