llvm-svn: 85765

Use NEON reg-reg moves, where profitable. This reduces "domain-cross" stalls, when we used to mix vfp and neon code (the former were used for reg-reg moves)

llvm-svn: 85764

llvm-svn: 85762

llvm-svn: 85748

llvm-svn: 85747

llvm-svn: 85746

llvm-svn: 85743

1. we'd run simplifycfg at the very start, even though
the per function passes have already cleaned this up.

2. In the main per-function pipeline that is interlaced with inlining 
   etc, we would do instcombine, jump threading, simplifycfg *before*
   doing SROA.  SROA is much more likely to expose opportunities for
   these passes than they are for SROA, so move SRoA up earlier.

also add some comments.

llvm-svn: 85742

I don't know what Dan wants to do with phi-merge-gep.ll, I'll let
him deal with it because instcombine may end up sinking these.

llvm-svn: 85739

not the max.  This didn't matter until the previous patch because
instcombine would refuse to sink loads with differenting alignments.

llvm-svn: 85738

llvm-svn: 85737

phis, it didn't preserve the alignment of the load.  This is a missed
optimization of the alignment is high and a miscompilation when the
alignment is low.

llvm-svn: 85736

but I'll investigate it separately.  This unbreaks 
test/FrontendC/weak_constant.c

llvm-svn: 85735

llvm-svn: 85734

llvm-svn: 85733

columns.

llvm-svn: 85732

GlobalOpt already deletes trivially dead functions/globals,
so GlobalDCE only adds values for cycles of dead things.

llvm-svn: 85731

llvm-svn: 85730

ipconstprop and doesn't take much time.  Just run it in its place.

This adds a testcase for it, which I plan to expand to cover other
"integration" cases, where we expect the optimizer to be able to
eliminate various things.  Due to phase order issues we've regressed
in a number of areas and integration tests are the only way I see to
prevent this.

llvm-svn: 85729

can be banging on a context at a time, this isn't needed.  Owen, please
review.

llvm-svn: 85728

llvm-svn: 85725

llvm-svn: 85724

llvm-svn: 85723

llvm-svn: 85722

llvm-svn: 85717

of the ScalarEvolution pass without needing to #include ScalarEvolution.h.

llvm-svn: 85716

llvm-svn: 85715

#include dependency, as frontends commonly pull in PassManager.h.

llvm-svn: 85714

in a way that should prevent ip constprop.  This allows clang/test/CodeGen/indirect-goto.c
to pass with the new indirect goto lowering.

llvm-svn: 85709

when BB2 has its address taken.  Since it ends up doing BB2->rauw(BB1),
this can cause the address of the entry block to be taken.  Since it is
generally undesirable to nuke blocks whose address is taken, even when
we can, just unconditionally stop this xform.

llvm-svn: 85708

ended in an uncond branch because the pass requires BreakCriticalEdges.

However, BCE doesn't eliminate critical adges from indbrs.

llvm-svn: 85707

block had its address taken even if the blockaddress was dead.

llvm-svn: 85706

This prevents unswitching from duplicating indbr's.

llvm-svn: 85705

llvm-svn: 85704

the testcase into:

_test1:                                                     ## @test1
## BB#0:                                                    ## %entry
	leaq	L_test1_bb6(%rip), %rax
	jmpq	*%rax
L_test1_bb:                                                 ## Address Taken
LBB1_1:                                                     ## %bb
	movb	$1, %al
	ret
L_test1_bb6:                                                ## Address Taken
LBB1_2:                                                     ## %bb6
	movb	$2, %al
	ret

Note, it is very very strange that BlockAddressSDNode doesn't carry 
around TargetFlags.  Dan, please fix this.

llvm-svn: 85703

an indirectbr.

llvm-svn: 85702

maintain the block use count in SubclassData.

llvm-svn: 85701

llvm-svn: 85700

indirectbr, thus we don't need "blockaddr(@func, null)".  Eliminate it
for simplicity.

llvm-svn: 85699

llvm-svn: 85698