RALinScan::attemptTrivialCoalescing() was returning a virtual register instead of the physical register it is allocated to. This resulted in virtual register(s) being added the live-in sets.

llvm-svn: 72890

A value defined by an implicit_def can be liven to a use BB. This is unfortunate. But register allocator still has to add it to the live-in set of the use BB.

llvm-svn: 72889

llvm-svn: 72880

instcombine doesn't know when it's safe. To partially compensate
for this, introduce new code to do this transformation in
dagcombine, which can use UnsafeFPMath.

llvm-svn: 72872

llvm-svn: 72870

llvm-svn: 72866

llvm-svn: 72861

llvm-svn: 72858

llvm-svn: 72854

the code tried to use "push", which doesn't exist for XMM registers.)

llvm-svn: 72836

llvm-svn: 72830

llvm-svn: 72828

Re-apply 72756 with fixes. One of those was introduced by we changed MachineInstrBuilder::addReg() interface.

llvm-svn: 72826

llvm-svn: 72825

llvm-svn: 72821

llvm-svn: 72817

llvm-svn: 72808

For Darwin / x86_64, override -relocation-model=static to pic if the output is assembly since Darwin assembler does not really support -static codeine.

I view this as a temporary workaround until the assembler / linker changes.

llvm-svn: 72806

carry GlobalBaseReg, and GlobalRetAddr too in Alpha's case. This
eliminates the need for them to search through the
MachineRegisterInfo livein list in order to identify these
virtual registers. EmitLiveInCopies is now the only user of the
virtual register portion of MachineRegisterInfo's livein data.

llvm-svn: 72802

with an accessor method which simply casts the parent class
SelectionDAGISel's TM to the target-specific type.

llvm-svn: 72801

be simplified to a loop-invariant value. This fixes PR4315.

llvm-svn: 72798

that puts a new warning in).

llvm-svn: 72797

llvm-svn: 72785

llvm-svn: 72783

llvm-svn: 72782

Emit file directives correctly in case of a .bc is generated by llvm-ld after linking in several .bc files.

llvm-svn: 72781

Expand it exactly like GlobalAddress.
Fix some more crashes (InsertBranch() not being implemented) for compiling hitec libs.

llvm-svn: 72776

llvm-svn: 72775

llvm-svn: 72771

this function" when using a not-too-smart compiler.

llvm-svn: 72768

llvm-svn: 72767

Fix for PR4225: When rewriter reuse a value in a physical register , it clear the register kill operand marker and its kill ops information. However, the cleared operand may be a def of a super-register. Clear the kill ops info for the super-register's sub-registers as well.

llvm-svn: 72758

llvm-svn: 72757

llvm-svn: 72756

If there is a def of a super-register followed by a use of a sub-register, do *not* add an implicit def of the sub-register. e.g.
EAX = ..., AX<imp-def>
...
    = AX

This creates a double-def. Apparently this used to be necessary but is no longer needed.

Thanks to Anton for pointing this out. Anton, I cannot create a test case without your uncommitted ARM patches. Please check in a test case for me.

llvm-svn: 72755

one new .cpp file, in preparation for merging in the Direct Object Emission
changes we're working on. No functional changes.
Fixed coding style issues on the original patch. Patch by Aaron Gray

llvm-svn: 72754

relocation model on x86-64. Higher level logic should override
the relocation model to PIC on x86_64-apple-darwin.

llvm-svn: 72746

TargetData pointer. The only thing it's used for are
calls to ConstantFoldCompareInstOperands and
ConstantFoldInstOperands, which both already accept a
null TargetData pointer. This makes
ConstantFoldConstantExpression easier to use in clients
where TargetData is optional.

llvm-svn: 72741

addresses, involving Base values which do not have Pointer type.
This fixes PR4297.

llvm-svn: 72739

llvm-svn: 72735