llvm-svn: 94684

llvm-svn: 94683

if this is the "correct" fix, but it seems a strict improvement.

llvm-svn: 94675

llvm-svn: 94673

llvm-svn: 94672

llvm-svn: 94671

It causes g++ to complain: unrecognized option '-Qunused-arguments'

llvm-svn: 94670

which allows targets to override function entry label emission.
Use it to convert linux/ppc to use EmitFunctionHeader().

llvm-svn: 94667

llvm-svn: 94666

even when -tailcallopt is not specified and it does not require changing ABI.
First case is the most trivial one. Perform tail call optimization when both
the caller and callee do not return values and when the callee does not take
any input arguments.

llvm-svn: 94664

llvm-svn: 94650

llvm-svn: 94649

llvm-svn: 94648

llvm-svn: 94646

This should fix a bunch of linux buildbot failures.

llvm-svn: 94643

llvm-svn: 94634

llvm-svn: 94632

a new set of them.

llvm-svn: 94631

EmitFunctionHeader:

7 files changed, 16 insertions(+), 210 deletions(-)

llvm-svn: 94630

llvm-svn: 94628

llvm-svn: 94627

Target independent isel should always pass along the "tail call" property. Change
target hook LowerCall's parameter "isTailCall" into a refernce. If the target
decides it's impossible to honor the tail call request, it should set isTailCall
to false to make target independent isel happy.

llvm-svn: 94626

llvm-svn: 94625

llvm-svn: 94624

change is that we now use ".linkonce discard" for global variables
instead of ".linkonce samesize".  These should be the same, just less
strict.  If anyone is interested in mcizing MCSection for COFF targets,
this should be easy to fix.

llvm-svn: 94623

llvm-svn: 94621

llvm-svn: 94620

broken by setting CXXFLAGS on the command line.

llvm-svn: 94619

llvm-svn: 94618

llvm-svn: 94617

llvm-svn: 94616

After running a batch of measurements, it is clear that the inliner metrics
need some adjustments:

Own argument bonus:       20 -> 5
Outgoing argument penalty: 0 -> 5
Alloca bonus:             10 -> 5
Constant instr bonus:      7 -> 5
Dead successor bonus:     40 -> 5*(avg instrs/block)

The new cost metrics are generaly 25 points higher than before, so we may need
to move thresholds.

With this change, InlineConstants::CallPenalty becomes a political correction:

if (!isa<IntrinsicInst>(II) && !callIsSmall(CS.getCalledFunction()))
  NumInsts += InlineConstants::CallPenalty + CS.arg_size();

The code size is accurately modelled by CS.arg_size(). CallPenalty is added
because calls tend to take a long time, so it may not be worth it to inline a
function with lots of calls.

All of the political corrections are in the InlineConstants namespace:
IndirectCallBonus, CallPenalty, LastCallToStaticBonus, ColdccPenalty,
NoreturnPenalty.

llvm-svn: 94615

logic up from X86 into the common code.  The other targets will 
hopefully start using this soon.

llvm-svn: 94614

is constified.

llvm-svn: 94613

llvm-svn: 94612

llvm-svn: 94611

llvm-svn: 94610

llvm-svn: 94601

Before existing NamedMDNode entry in the symbol table, remove any existing entry with the same name.

llvm-svn: 94600

assignments.

.set x, a-b

is the same as:

x = a-b

llvm-svn: 94596