significant debug info testcases are now all going through
MCStreamer, though they print a lot of extraneous newlines to "O".

llvm-svn: 98101

is preparatory to having PEI's scavenged frame index value reuse logic
properly distinguish types of frame values (e.g., whether the value is
stack-pointer relative or frame-pointer relative).

No functionality change.

llvm-svn: 98086

llvm-svn: 98048

Now that setStartLabel takes an MCSymbol, we can de-ID'ize
beginScope and RecordSourceLine.

llvm-svn: 98047

failure remaining on mainline.

llvm-svn: 98046

llvm-svn: 98045

llvm-svn: 98044

  coalescer) handle sub-register classes.
- Add heuristics to avoid non-profitable cse. Given the current lack of live
  range splitting, avoid cse when an expression has PHI use and the would be
  new use is in a BB where the expression wasn't already being used.

llvm-svn: 98043

failures.

llvm-svn: 98039

multibyte opcodes and in the case of multiple scopes.

llvm-svn: 98036

beginScope and RecordSourceLine.

llvm-svn: 98035

now that the dependence on ID is removed from MMI.

llvm-svn: 98034

happens, the start/end of a scope can never be the same.

llvm-svn: 98032

and add a FIXME about how we are eventually going to zap this
lookup table once mc world domination is complete.

llvm-svn: 98031

llvm-svn: 98025

physreg becomes ridiculously high.

std::upper_bound may be log(N), but for sufficiently large live intervals, it
becomes log(N)*cachemiss = a long long time.

This patch improves coalescer time by 4500x for a function with 20000
function calls. The generated code is different, but not significantly worse -
the allocator hints are almost as good as physreg coalescing anyway.

llvm-svn: 98023

llvm-svn: 98017

recomputation of the labels.

llvm-svn: 98016

llvm-svn: 98015

the one special case into EmitSectionOffset.  MCize
the non-special case in EmitSectionOffset.

llvm-svn: 98014

llvm-svn: 98013

used for 'flavor'.

llvm-svn: 98012

we can eliminate "flavor".

llvm-svn: 98011

MCize it.

llvm-svn: 98010

Don't waste time trying to CSE labels, phis, inline asm. Definitely avoid cse implicit-def for obvious performance reason.

llvm-svn: 98009

llvm-svn: 98007

available, the only thing this affects is that we produce
.set in one case we didn't before, which shouldn't harm
anything.  Make EmitSectionOffset call EmitDifference
instead of duplicating it.

llvm-svn: 98005

llvm-svn: 98002

llvm-svn: 97999

llvm-svn: 97998

llvm-svn: 97997

llvm-svn: 97996

Yes, DIE you fiendish labels, die all of you.

llvm-svn: 97995

switching some stuff over to passing around MCSymbol* instead
of stem+ID.

llvm-svn: 97993

Derive DIType from DIScope. This simplifies getContext() where for members the context is a type. This also eliminates need of CompileUnitMaps maintained by dwarf writer.

llvm-svn: 97990

This is a first step towards eliminating checks in Descriptor constructors.

llvm-svn: 97975

llvm-svn: 97963

This is a first step towards eliminating unncessary constructor checks in light weight DIDescriptor wrappers.

llvm-svn: 97947

llvm-svn: 97939

llvm-svn: 97938