Creates a configurable regalloc pipeline.

Ensure specific llc options do what they say and nothing more: -reglloc=... has no effect other than selecting the allocator pass itself. This patch introduces a new umbrella flag, "-optimize-regalloc", to enable/disable the optimizing regalloc "superpass". This allows for example testing coalscing and scheduling under -O0 or vice-versa.

When a CodeGen pass requires the MachineFunction to have a particular property, we need to explicitly define that property so it can be directly queried rather than naming a specific Pass. For example, to check for SSA, use MRI->isSSA, not addRequired<PHIElimination>.

CodeGen transformation passes are never "required" as an analysis

ProcessImplicitDefs does not require LiveVariables.

We have a plan to massively simplify some of the early passes within the regalloc superpass.

llvm-svn: 150226

rdar://10838899

llvm-svn: 150222

llvm-svn: 150178

Teach the MC and disassembler about SoftFail, and hook it up to UNPREDICTABLE on ARM. Wire this to tBLX in order to provide test coverage.

llvm-svn: 150169

llvm-svn: 150167

Flatten some of the arrays in the X86 disassembler tables to reduce space needed to store pointers on 64-bit hosts and reduce relocations needed at startup. Part of PR11953.

llvm-svn: 150161

Calls clobber the flags, but when using register masks there is no
EFLAGS<imp-def> operand.

llvm-svn: 150117

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: 150097

llvm-svn: 150096

llvm-svn: 150095

llvm-svn: 150093

llvm-svn: 150091

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

> 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: 150014

llvm-svn: 150008

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: 149961

llvm-svn: 149934

llvm-svn: 149926

This CL delays reading of function bodies from initial parse until
materialization, allowing overlap of compilation with bitcode download.

llvm-svn: 149918

instead of always using ConstantVector.

llvm-svn: 149912

remove the code that handles them.

llvm-svn: 149901

llvm-svn: 149866

Reorder includes while at it.

llvm-svn: 149863

llvm-svn: 149859

llvm-svn: 149846

above.

llvm-svn: 149841

llvm-svn: 149834

llvm-svn: 149833

convert at least one client over to use them. Subsequent patches both to
LLVM and Clang will try to convert more people over to a common set of
predicates.

This round of predicates is focused on OS-categorization predicates.

llvm-svn: 149815

llvm-svn: 149814

llvm-svn: 149809

llvm-svn: 149808