llvm-svn: 55220

process up to a higher level. This allows FastISel to leverage
more of SelectionDAGISel's infastructure, such as updating Machine
PHI nodes.

Also, implement transitioning from SDISel back to FastISel in
the middle of a block, so it's now possible to go back and
forth. This allows FastISel to hand individual CallInsts and other
complicated things off to SDISel to handle, while handling the rest
of the block itself.

To help support this, reorganize the SelectionDAG class so that it
is allocated once and reused throughout a function, instead of
being completely reallocated for each block.

llvm-svn: 55219

i8* getelementptr. DAGCombine eliminates these, but this is
a fairly common case.

llvm-svn: 55214

llvm-svn: 55212

llvm-svn: 55205

{standard input}:17:bad register name `%sil'
make[4]: *** [libgcc/./_addvsi3.o] Error 1
make[4]: *** Waiting for unfinished jobs....
{standard input}:23:bad register name `%dil'
{standard input}:28:bad register name `%dil'
make[4]: *** [libgcc/./_addvdi3.o] Error 1
{standard input}:18:bad register name `%sil'
make[4]: *** [libgcc/./_subvsi3.o] Error 1

llvm-svn: 55200

llvm-svn: 55192

llvm-svn: 55191

are not yet updated properly, but that's a separate
task.

llvm-svn: 55187

handled correctly, and change a few SmallVector uses to use
size 0 to more clearly reflect their intent.

llvm-svn: 55181

Patch contributed by m-s.

llvm-svn: 55167

and use it in FastISelEmitter.cpp, and make FastISel
subtarget aware. Among other things, this lets it work
properly on x86 targets that don't have SSE, where it
successfully selects x87 instructions.

llvm-svn: 55156

llvm-svn: 55154

llvm-svn: 55134

llvm-svn: 55133

llvm-svn: 55130

llvm-svn: 55129

intptr_t type in this case. FastISel can now select simple
getelementptr instructions.

llvm-svn: 55125

are actually deleted, so it's not necessary to remove re-used
nodes from the set.

llvm-svn: 55123

llvm-svn: 55099

llvm-svn: 55097

llvm-svn: 55092

llvm-svn: 55089

llvm-svn: 55085

llvm-svn: 55077

class hold a MachineRegisterInfo member, and make the
MachineBasicBlock be passed in to SelectInstructions rather
than the FastISel constructor.

llvm-svn: 55076

llvm-svn: 55075

llvm-svn: 55074

llvm-svn: 55072

llvm-svn: 55071

llvm-svn: 55070

llvm-svn: 55069

llvm-svn: 55067

llvm-svn: 55059

alignment and volatility information, such as loads and
stores, to reduce the number of integer values added to
the FoldingSetNodeID.

llvm-svn: 55058

llvm-svn: 55054

llvm-svn: 55050

llvm-svn: 55049

not have a fall-through successor.

llvm-svn: 55033

llvm-svn: 55031