llvm-svn: 63653

basic-block segments bottom-up instead of top down. This
is the first step in a general restructuring of the way
register liveness is tracked in the post-RA scheduler.

llvm-svn: 63643

Duncan spotted this. Thanks!

llvm-svn: 63641

in any old order.  Since analyzing a node analyzes its
operands also, this can mean that when we pop a node
off the list of nodes to be analyzed, it may already
have been analyzed.

llvm-svn: 63632

llvm-svn: 63599

initial PHI nodes of the machine function.

llvm-svn: 63598

llvm-svn: 63595

llvm-svn: 63594

correct. We need more infrastructure before we can get the DebugLoc info for
these instructions.

llvm-svn: 63593

llvm-svn: 63591

llvm-svn: 63585

created. Specifically, those BuildMIs which use
"DebugLoc::getUnknownLoc()". I'll remove them soon.

llvm-svn: 63584

into SimplifySetCC which gets called elsewhere.

llvm-svn: 63583

information. This eliminates the need for the Flags field in MemSDNode,
so this makes LoadSDNode and StoreSDNode smaller. Also, it makes
FoldingSetNodeIDs for loads and stores two AddIntegers smaller.

llvm-svn: 63577

llvm-svn: 63574

except LegalizeOp itself.

llvm-svn: 63560

Live interval reconstruction needs to account for this, and scour its maps to
prevent dangling references.

llvm-svn: 63558

among others.

llvm-svn: 63555

llvm-svn: 63545

llvm-svn: 63543

llvm-svn: 63540

llvm-svn: 63537

llvm-svn: 63536

llvm-svn: 63527

llvm-svn: 63523

llvm-svn: 63498

crashes or wrong code with codegen of large integers:
eliminate the legacy getIntegerVTBitMask and
getIntegerVTSignBit methods, which returned their
value as a uint64_t, so couldn't handle huge types.

llvm-svn: 63494

llvm-svn: 63493

llvm-svn: 63492

Fix an issue in PHI construction that was exposed by GCC 4.2 producing a different set iteration order for the reg_iterator.

llvm-svn: 63490

llvm-svn: 63488

llvm-svn: 63486

llvm-svn: 63485

returned by getShiftAmountTy may be too small
to hold shift values (it is an i8 on x86-32).
Before and during type legalization, use a large
but legal type for shift amounts: getPointerTy;
afterwards use getShiftAmountTy, fixing up any
shift amounts with a big type during operation
legalization.  Thanks to Dan for writing the
original patch (which I shamelessly pillaged).

llvm-svn: 63482

when A==B, -0.0 != +0.0.

llvm-svn: 63474

llvm-svn: 63473

llvm-svn: 63468

Complete (modulo bugs).

llvm-svn: 63458

(modulo bugs)

llvm-svn: 63457

couple of things that use it.

llvm-svn: 63456