scheduling, and generalize is so that preserves state across
scheduling regions. This fixes incorrect live-range information around
terminators and labels, which are effective region boundaries.

In place of looking for terminators to anchor inter-block dependencies,
introduce special entry and exit scheduling units for this purpose.

llvm-svn: 64254

llvm-svn: 64242

llvm-svn: 64240

llvm-svn: 64237

llvm-svn: 64226

This fixes PR3535.

llvm-svn: 64224

uninitialized).

llvm-svn: 64220

Fix PR3457: Ignore control successors when looking for closest scheduled successor. A control successor doesn't read result(s) produced by the scheduling unit being evaluated.

llvm-svn: 64210

llvm-svn: 64209

llvm-svn: 64207

llvm-svn: 64204

Function temporaries can not overlap with retval or args.See the comment in source code to know the reason. Anything having .auto. in its name is local to a function in nature irrespective of the linkage specified. print static local variables in module level IDATA section. 

llvm-svn: 64199

llvm-svn: 64186

If the target cannot issue a copy for the given source and dest registers, abort instead of silently continue.

llvm-svn: 64184

llvm-svn: 64177

llvm-svn: 64164

llvm-svn: 64163

llvm-svn: 64150

llvm-svn: 64148

even if the underlying operand is NULL. This may happen in debugging context
within opt with partial loop unrolling (see test/Transforms/LoopUnroll/partial.ll).
After this fix I can resubmit the (backed out) r63459:
* lib/VMCore/AsmWriter.cpp: use precise accessors.

llvm-svn: 64142

llvm-svn: 64126

Fix another case ShortenDeadCopySrcLiveRange is shortening too much. No test case possible since I don't know what to grep for. :-(

llvm-svn: 64125

suprise to some callers, e.g. register coalescer. For now, add an parameter
that tells AnalyzeBranch whether it's safe to modify the mbb. A better
solution is out there, but I don't have time to deal with it right now.

llvm-svn: 64124

llvm-svn: 64101

Also removes some trailing whitespace and fixes one 80-column violation.

llvm-svn: 64094

llvm-svn: 64093

llvm-svn: 64091

llvm-as: t.ll:2:15: pointers to void are invalid, use i8* instead
%X = type void*
              ^

instead of asserting and dying.

llvm-svn: 64089

Fix PR3486. Fix a bug in code that manually patch physical register live interval after its sub-register is coalesced with a virtual register.

llvm-svn: 64082

llvm-svn: 64076

Right now if the coalesced copy def is dead and its src is a kill, and that
there are now other uses within the live range, the coalescer would mark the
def of the source register as dead. But it should also check if there are
other kills which means the value has other uses not in the live range.

llvm-svn: 64075

llvm-svn: 64073

llvm-svn: 64065

llvm-svn: 64062

llvm-svn: 64040

changes the address space of the pointer.

llvm-svn: 64035

No functional change.

llvm-svn: 64026

ScheduleDAG's TLI member to use const.

llvm-svn: 64018

two AddString methods to use it.

llvm-svn: 64005

llvm-svn: 64003