llvm-svn: 46681

multiple times due to a RAUW.

llvm-svn: 46680

keep the LegalizeTypes node flags up to date when doing a RAUW.
This fixes a nasty bug that Duncan ran into and makes the 
previous (nonbuggy case) more efficent.

llvm-svn: 46679

llvm-svn: 46678

DAGUpdateListener object pointer instead of just returning a vector 
of deleted nodes.  This makes the interfaces more efficient (no more
allocating a vector [at least a malloc], filling it in, then walking
it) and more clean.  This also allows the client to be notified of
nodes that are *changed* but not deleted.

llvm-svn: 46677

llvm-svn: 46676

SelectionDAG::ReplaceAllUsesWith to handle replacement of
an SDOperand with *any* sdoperand, not just one for a node with
a single result.  Note that this has a horrible FIXME'd hack in it
to work around PR1975.  This should be removed when PR1975 is fixed.

llvm-svn: 46674

llvm-svn: 46673

llvm-svn: 46672

llvm-svn: 46667

llvm-svn: 46666

llvm-svn: 46665

SDIsel processes llvm.dbg.declare by recording the variable debug information descriptor and its corresponding stack frame index in MachineModuleInfo. This only works if the local variable is "homed" in the stack frame. It does not work for byval parameter, etc.
Added ISD::DECLARE node type to represent llvm.dbg.declare intrinsic. Now the intrinsic calls are lowered into a SDNode and lives on through out the codegen passes.
For now, since all the debugging information recording is done at isel time, when a ISD::DECLARE node is selected, it has the side effect of also recording the variable. This is a short term solution that should be fixed in time.

llvm-svn: 46659

llvm-svn: 46658

llvm-svn: 46657

than double through the C bindings. Thanks to Tomas Lindquist
Olsen for reporting it.

llvm-svn: 46656

llvm-svn: 46655

llvm-svn: 46646

llvm-svn: 46645

llvm-svn: 46636

Remove the nasty LABEL hack with a much less evil one. Now llvm.dbg.func.start implies a stoppoint is set. SelectionDAGISel records a new source line but does not create a ISD::LABEL node for this special stoppoint. Asm printer will magically print this label. This ensures nothing is emitted before.

llvm-svn: 46635

llvm-svn: 46628

llvm-svn: 46625

llvm-svn: 46623

exposed a bug in APFloat's long double->double conversion of
NaNs.  Broke several things in the ieee part of gcc testsuite.

llvm-svn: 46617

llvm-svn: 46615

llvm-svn: 46614

llvm-svn: 46612

llvm-svn: 46611

llvm-svn: 46610

Add an extra operand to LABEL nodes which distinguishes between debug, EH, or misc labels. This fixes the EH breakage. However I am not convinced this is *the* solution.

llvm-svn: 46609

Allow ComplexExpressions in InstrInfo.td files to be slightly more... complex! ComplexExpressions can now have attributes which affect how TableGen interprets
the pattern when generating matchin code. 

The first (and currently, only) attribute causes the immediate parent node of the ComplexPattern operand to be passed into the matching code rather than the node at the root of the entire DAG containing the pattern.

llvm-svn: 46606

llvm-svn: 46605

llvm-svn: 46598

MRegisterInfo::getLocation() is a really bad idea. Its function is to calculate the offset from frame pointer to a stack slot and then storing the delta in a MachineLocation object. The name is bad (it implies a getter), and MRegisterInfo doesn't need to know about MachineLocation.
Replace getLocation() with getFrameIndexOffset() which returns the delta from frame pointer to stack slot. Dwarf writer can then use the information for whatever it wants.

llvm-svn: 46597

llvm-svn: 46596

llvm-svn: 46591

llvm-svn: 46590

llvm-svn: 46588

with the real FLT_ROUNDS (defined in <float.h>).

llvm-svn: 46587