inferred from the instr patterns.

llvm-svn: 45824

llvm-svn: 45821

instructions (with patterns) that load memory marked, for example.

llvm-svn: 45818

or being side-effect free.

llvm-svn: 45816

llvm-svn: 45813

because assembler/linker can't cope with weak absolutes.
PR 1880.

llvm-svn: 45811

Do not use the stack pointer directly, issue a copyfromreg instead. Otherwise we can end up with something like ADD32ri %esp, x which two-address pass won't like.

llvm-svn: 45798

than hardware supported type will be scalarized, so we
can infer their alignment from that info.

We now codegen pr1845 into:

_boolVectorSelect:
	lbz r2, 0(r3)
	stb r2, -16(r1)
	blr 

llvm-svn: 45796

llvm-svn: 45792

llvm-svn: 45768

llvm-svn: 45766

on 64-bit builds.  Analysis and original patch
by Török Edwin.  Code audit found another place
with the same problem, also fixed here.

llvm-svn: 45746

the code generated is not wonderful.  This turns a miscompilation into
a code quality bug (noted in the ppc readme).  This fixes PR642, which
is over 2 years old (!).  Nate, please review this.

llvm-svn: 45742

llvm-svn: 45734

llvm-svn: 45733

llvm-svn: 45731

llvm-svn: 45727

llvm-svn: 45726

llvm-svn: 45725

llvm-svn: 45723

llvm-svn: 45720

llvm-svn: 45712

llvm-svn: 45703

llvm-svn: 45701

llvm-svn: 45699

llvm-svn: 45698

Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.

llvm-svn: 45695

all clients over to using predicates instead of these flags directly.
These are now private values which are only to be used to statically
initialize the tables.

llvm-svn: 45692

llvm-svn: 45691

Evan, please review the comments I added to getNumDefs to make sure
that they are accurate, thx.

llvm-svn: 45687

llvm-svn: 45685

llvm-svn: 45683

llvm-svn: 45680

llvm-svn: 45679

over to using them, instead of diddling Flags directly.  Change the
various flags from const variables to enums.

llvm-svn: 45677

that it is cheap and efficient to get.

Move a variety of predicates from TargetInstrInfo into 
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around.  Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.

Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.

llvm-svn: 45674

Some day I'll get it all moved over...

llvm-svn: 45672

up to the various compiler pipelines.

This doesn't actually add support for any GC algorithms, which means it 
temporarily breaks a few tests. To be fixed shortly.

llvm-svn: 45669

llvm-svn: 45668

llvm-svn: 45667