Distinquish stack slots from other stack objects. They (and fixed objects) get FixedStack PseudoSourceValues.

llvm-svn: 84326

llvm-svn: 84321

necessarily fixed. Only those will negative frame indices are "fixed."

llvm-svn: 84315

llvm-svn: 84311

updating the callgraph when introducing a call.

llvm-svn: 84310

llvm-svn: 84300

llvm-svn: 84299

to be more general and understand more varieties of loops.

Teach CodePlacementOpt to reorganize the basic blocks of a loop so that
they are contiguous. This also includes a fair amount of logic for preserving
fall-through edges while doing so. This fixes a BranchFolding-ism where blocks
which can't be made to use a fall-through edge and don't conveniently fit
anywhere nearby get tossed out to the end of the function.

llvm-svn: 84295

Update testcases that rely on malloc insts being present.

Also prematurely remove MallocInst handling from IndMemRemoval and RaiseAllocations to help pass tests in this incremental step.

llvm-svn: 84292

llvm-svn: 84288

llvm-svn: 84279

llvm-svn: 84276

llvm-svn: 84273

load, to help SelectionDAG fold them into the loads, unless
conditions are unfavorable.

llvm-svn: 84271

llvm-svn: 84264

If there is not any llvm instruction associated with each lexical scope encoded in debug info then create such scope on demand for variable info.

llvm-svn: 84262

Thanks to Duncan Sands for noticing this bug.

llvm-svn: 84261

llvm-svn: 84256

llvm-svn: 84252

llvm-svn: 84251

llvm-svn: 84250

llvm-svn: 84249

llvm-svn: 84248

llvm-svn: 84247

llvm-svn: 84246

llvm-svn: 84244

Patch by Johnny Chen.

llvm-svn: 84243

patch by Peter Johnson! (PR5195)

llvm-svn: 84239

llvm-svn: 84238

llvm-svn: 84236

llvm-svn: 84235

llvm-svn: 84234

llvm-svn: 84233

variables and symbols invalid.

llvm-svn: 84232

since they are allowed to be redefined.

llvm-svn: 84230

llvm-svn: 84229

llvm-svn: 84228

When checking aliases between phi sources and V2, we know the sources are not themselves phi nodes. However, V2 may be. Call aliasCheck with V2 first to potentially eliminate a std::swap call.

llvm-svn: 84226

I can see with the original code was that I forgot that this runs after
type legalization and hence the result type will always be i32. (Custom
legalization of EXTRACT_VECTOR_ELT is only enabled for vector types with
8- and 16-bit elements.)

Regarding the FIXME comment: any information about sign and zero-extension
should be captured by separate extension operations.  The DAG combiner should
handle those to produce either VGETLANEu or VGETLANEs, and that seems to be
working now.  If there are cases that we're missing, let me know.

llvm-svn: 84218

1. Emit external function type information for all COFF targets since it's
a feature of object format
2. Emit linker directives only for cygming (since this is ld-specific stuff)

llvm-svn: 84214