llvm-svn: 74678

a key is present in a std::map or DenseMap to use find instead.

llvm-svn: 74676

llvm-svn: 74675

llvm-svn: 74670

llvm-svn: 74663

moment, that I will need to make far-reaching changes.

llvm-svn: 74655

U    include/llvm/LLVMContext.h
U    lib/VMCore/LLVMContext.cpp
U    lib/AsmParser/LLParser.cpp
U    lib/AsmParser/LLParser.h

Temporarily reverting r74648. It was causing massive failures in release mode.

llvm-svn: 74653

llvm-svn: 74648

llvm-svn: 74647

llvm-svn: 74644

llvm-svn: 74640

llvm-svn: 74628

bytes and not bytes.

llvm-svn: 74624

llvm-svn: 74623

Windows variant, strerror_s, but I couldn't test that.

I'll update configure and config.h.in in a subsequent patch.

llvm-svn: 74621

llvm-svn: 74620

Add a pointer to the owning LLVMContext to Module.  This requires threading LLVMContext through a lot
of the bitcode reader and ASM parser APIs, as well as supporting it in all of the tools.

Patches for Clang and LLVM-GCC to follow.

llvm-svn: 74614

Remove special handling of implicit_def. Fix a couple more bugs in liveintervalanalysis and coalescer handling of implicit_def.

Note, isUndef marker must be placed even on implicit_def def operand or else the scavenger will not ignore it. This is necessary because -O0 path does not use liveintervalanalysis, it treats implicit_def just like any other def.

llvm-svn: 74601

llvm-svn: 74599

llvm-svn: 74596

llvm-svn: 74592

llvm-svn: 74591

add some comments to MCSymbol header, make the ctor private so that only MCContext can create these.

llvm-svn: 74590

llvm-svn: 74589

to not have to create a temporary vector (in the API at least).  Patch by Jay Foad!

llvm-svn: 74584

Handle IMPLICIT_DEF with isUndef operand marker, part 2. This patch moves the code to annotate machineoperands to LiveIntervalAnalysis. It also add markers for implicit_def that define physical registers. The rest, is just a lot of details.

llvm-svn: 74580

 - This more or less amounts to a revert of r65379. I'm curious to know what
   happened that caused this variable to become unused.

llvm-svn: 74579

llvm-svn: 74574

llvm-svn: 74572

allowed to be undefined when the expression is seen, we cannot enforce the
same-section requirement until the entire assembly file has been seen.

llvm-svn: 74565

have the alignment be calculated up front, and have the back-ends obey whatever
alignment is decided upon.

This allows for future work that would allow for precise no-op placement and the
like.

llvm-svn: 74564

llvm-svn: 74553

in APIntTest.cpp.

llvm-svn: 74550

llvm-svn: 74542

llvm-svn: 74537

Temporarily restore the scavenger implicit_def checking code. MachineOperand isUndef mark is not being put on implicit_def of physical registers (created for parameter passing, etc.).

llvm-svn: 74519

Add a bit IsUndef to MachineOperand. This indicates the def / use register operand is defined by an implicit_def. That means it can def / use any register and passes (e.g. register scavenger) can feel free to ignore them.

The register allocator, when it allocates a register to a virtual register defined by an implicit_def, can allocate any physical register without worrying about overlapping live ranges. It should mark all of operands of the said virtual register so later passes will do the right thing.

This is not the best solution. But it should be a lot less fragile to having the scavenger try to track what is defined by implicit_def.

llvm-svn: 74518

llvm-svn: 74515

llvm-svn: 74510

llvm-svn: 74496