llvm-svn: 41668

llvm-svn: 41665

Implement some constant folding in SelectionDAG and
DAGCombiner using APFloat.  Remove double versions
of constructor and getValue from ConstantFPSDNode.

llvm-svn: 41664

llvm-svn: 41650

llvm-svn: 41645

llvm-svn: 41643

This is mandated table 3.1 at
http://www.x86-64.org/documentation/abi.pdf

llvm-svn: 41642

llvm-svn: 41641

Use std::map instead of a (potentially very sparse) array to track val# defined by copy from the other live range. Minor compile time win when number of val# is large.

llvm-svn: 41640

Use APFloat interfaces for more references, mostly
of ConstantFPSDNode.

llvm-svn: 41632

llvm-svn: 41629

llvm-svn: 41628

Comments added. It now generates V5TE multiply instructions. However, it is still necessary to model PUWLSH bits more clearly.

llvm-svn: 41627

llvm-svn: 41626

llvm-svn: 41625

Added support to fold X86 load / store instructions. This allow rematerialized loads to be folded into their uses.

llvm-svn: 41599

llvm-svn: 41598

Add a variant of foldMemoryOperand to fold any load / store, not just load / store from / to stack slots.

llvm-svn: 41597

llvm-svn: 41595

llvm-svn: 41590

Add APFloat interfaces to ConstantFP, SelectionDAG.
Fix integer bit in double->APFloat conversion.
Convert LegalizeDAG to use APFloat interface in
ConstantFPSDNode uses.

llvm-svn: 41587

llvm-svn: 41584

Changes related modules so VNInfo's are not copied. This decrease
copy coalescing time by 45% and overall compilation time by 10% on siod.

llvm-svn: 41579

llvm-svn: 41578

in the trampoline lowering.  Lookup the jump and
mov opcodes for the trampoline rather than hard
coding them.

llvm-svn: 41577

llvm-svn: 41565

scheduling.

llvm-svn: 41556

1. Eliminate the costly live interval "swapping".
2. Change ValueNumberInfo container from SmallVector to std::vector. The former
   performs slowly when the vector size is very large.

llvm-svn: 41536

Changed the stack frame layout, StackGrowsUp fits better to Mips strange stack.
Stack offset calculation bug fixed!

llvm-svn: 41529

Added comments about new stack allocation.
Expand SelectCC for i32 results

llvm-svn: 41527

Comments for Mips directives added.

llvm-svn: 41526

llvm-svn: 41525

llvm-svn: 41522

llvm-svn: 41516

Update InvokeInst to work like CallInst

llvm-svn: 41506

llvm-svn: 41502

where both pointers have non-zero offsets.

llvm-svn: 41491

to not alias each other, it can be translated as an llvm.memcpy.

llvm-svn: 41489

llvm-svn: 41488

gcc exception handling: if an exception unwinds through
an invoke, then execution must branch to the invoke's
unwind target.  We previously tried to enforce this by
appending a cleanup action to every selector, however
this does not always work correctly due to an optimization
in the C++ unwinding runtime: if only cleanups would be
run while unwinding an exception, then the program just
terminates without actually executing the cleanups, as
invoke semantics would require.  I was hoping this
wouldn't be a problem, but in fact it turns out to be the
cause of all the remaining failures in the LLVM testsuite
(these also fail with -enable-correct-eh-support, so turning
on -enable-eh didn't make things worse!).  Instead we need
to append a full-blown catch-all to the end of each
selector.  The correct way of doing this depends on the
personality function, i.e. it is language dependent, so
can only be done by gcc.  Thus this patch which generalizes
the eh.selector intrinsic so that it can handle all possible
kinds of action table entries (before it didn't accomodate
cleanups): now 0 indicates a cleanup, and filters have to be
specified using the number of type infos plus one rather than
the number of type infos.  Related gcc patches will cause
Ada to pass a cleanup (0) to force the selector to always
fire, while C++ will use a C++ catch-all (null).

llvm-svn: 41484