I think this was already the intention, but DeadMachineInstructionElim
was accidentally tracking the liveness of reserved registers. Now,
instructions with reserved defs are never deleted.

This prevents the call stack adjustment instructions from getting
deleted when enabling register masks.

llvm-svn: 150116

For simplicity, treat calls with register masks as basic block
boundaries.  This means we can't copy propagate callee-saved registers
across calls, but I don't think that is a big deal.

llvm-svn: 150108

llvm-svn: 150102

Moving toward a uniform style of pass definition to allow easier target configuration.
Globally declare Pass ID.
Globally declare pass initializer.
Use INITIALIZE_PASS consistently.
Add a call to the initializer from CodeGen.cpp.
Remove redundant "createPass" functions and "getPassName" methods.

While cleaning up declarations, cleaned up comments (sorry for large diff).

llvm-svn: 150100

llvm-svn: 150099

llvm-svn: 150098

llvm-svn: 150097

llvm-svn: 150096

llvm-svn: 150095

llvm-svn: 150094

llvm-svn: 150093

llvm-svn: 150092

llvm-svn: 150091

When a virtual register is live across a call, limit the search space to
call-preserved registers.

llvm-svn: 150081

Creating the isPredicated TSFlag enables the code
to use the property defined in the instruction format
instead of using a large switch statement.

llvm-svn: 150078

Build an ordered vector of register mask operands (i.e., calls) when
computing live intervals. Provide a checkRegMaskInterference() function
that computes a bit mask of usable registers for a live range.

This is a quick way of determining of a live range crosses any calls,
and restricting it to the callee saved registers if it does.
Previously, we had to discover call clobbers for each candidate register
independently.

llvm-svn: 150077

and setting that.

llvm-svn: 150074

llvm-svn: 150071

> This IR code
> %res = call <8 x float> @llvm.x86.avx.cmp.ps.256(<8 x float> %a0, <8 x float> %a1, i8 14)
> fails with assertion:
>
> llc: X86ATTInstPrinter.cpp:62: void llvm::X86ATTInstPrinter::printSSECC(const llvm::MCInst*, unsigned int, llvm::raw_ostream&): Assertion `0 && "Invalid ssecc argument!"' failed.
> 0  llc             0x0000000001355803
> 1  llc             0x0000000001355dc9
> 2  libpthread.so.0 0x00007f79a30575d0
> 3  libc.so.6       0x00007f79a23a1945 gsignal + 53
> 4  libc.so.6       0x00007f79a23a2f21 abort + 385
> 5  libc.so.6       0x00007f79a239a810 __assert_fail + 240
> 6  llc             0x00000000011858d5 llvm::X86ATTInstPrinter::printSSECC(llvm::MCInst const*, unsigned int, llvm::raw_ostream&) + 119

I added the full testing for all possible pseudo-ops of cmp.
I extended X86AsmPrinter.cpp and X86IntelInstPrinter.cpp.

You'l also see lines alignments (unrelated to this fix) in X86IselLowering.cpp from my previous check-in.

llvm-svn: 150068

llvm-svn: 150067

Remove GCC builtins for vpermilp* intrinsics as clang no longer needs them. Custom lower the intrinsics to the vpermilp target specific node and remove intrinsic patterns.

llvm-svn: 150060

llvm-svn: 150047

llvm-svn: 150045

llvm-svn: 150044

llvm-svn: 150043

llvm-svn: 150041

can rauw forward declarations if we decide to emit the full type.

Part of rdar://10809898

llvm-svn: 150024

llvm-svn: 150022

llvm-svn: 150014

llvm-svn: 150012

llvm-svn: 150008

llvm-svn: 149999

load / store) if the ADD / SUB has a live definition of CPSR.

Bug reported by David Meyer. Alas, no test case.

llvm-svn: 149970

llvm-svn: 149968

llvm-svn: 149967

llvm-svn: 149961

llvm-svn: 149954

much. This gets us an addition 0.9% on 445.gobmk.

llvm-svn: 149952

llvm-svn: 149941

llvm-svn: 149934