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

large code models.

llvm-svn: 98042

bear with the awful code. It won't last in its current state beyond tonight.

llvm-svn: 98040

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

as LCSSA no longer transforms such uses.

llvm-svn: 98033

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: 98028

llvm-svn: 98027

llvm-svn: 98026

llvm-svn: 98025

llvm-svn: 98024

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

This patch updates LLVMDebugVersion to 8.
Debug info descriptors encoded using LLVMDebugVersion 7 is supported.

Corresponding llvmgcc and clang FE commits are required.

llvm-svn: 98020

llvm-svn: 98019

llvm-svn: 98018

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: 98004

llvm-svn: 98002

immediate instructions cannot set the condition codes, so they do not have
the extra cc_out operand.  We hit an assertion during tail duplication
because the instruction being duplicated had more operands that expected.

llvm-svn: 98001

llvm-svn: 98000

llvm-svn: 97999

llvm-svn: 97998

llvm-svn: 97997