unfolding loads for hoisting.  getOpcodeAfterMemoryUnfold returns the
opcode of the original operation without the load, not the load
itself, MachineLICM needs to know the operand index in order to get
the correct register class. Extend getOpcodeAfterMemoryUnfold to
return this information.

llvm-svn: 85622

llvm-svn: 85621

llvm-svn: 85619

llvm-svn: 85615

llvm-svn: 85614

llvm-svn: 85611

llvm-svn: 85610

llvm-svn: 85609

llvm-svn: 85608

apply to the build tools. If we want to allow build tool flags input, we
should have separate inputs (BUILD_CFLAGS and BUILD_CXXFLAGS, perhaps).

llvm-svn: 85607

llvm-svn: 85606

llvm-svn: 85605

llvm-svn: 85599

void f (int a1, int a2, int a3, int a4, int a5,...)

In ARMTargetLowering::LowerFormalArguments if the function has 4 or
more regular arguments we used to set VarArgsFrameIndex using an
offset of 0, which is only correct if the function has exactly 4
regular arguments.

llvm-svn: 85590

llvm-svn: 85587

Rather than having llvm-gcc changing the meaning of OptimizeSize, just make sure loop unswitch is conservative when optimization level is < 3.

llvm-svn: 85581

clang/test/CodeGen/indirect-goto.c runs! (unoptimized)

llvm-svn: 85577

llvm-svn: 85575

llvm-svn: 85572

llvm-svn: 85571

llvm-svn: 85568

llvm-svn: 85562

llvm-svn: 85559

llvm-svn: 85558

llvm-svn: 85557

llvm-svn: 85556

llvm-svn: 85551

llvm-svn: 85549

llvm-svn: 85547

llvm-svn: 85546

Between scheduling regions, correctly maintain anti-dep breaking state so that we don't incorrectly rename registers that span these regions.

llvm-svn: 85537

llvm-svn: 85536

*ISelDAGToDAG.cpp to being regular code in SelectionDAGISel.cpp.

llvm-svn: 85530

llvm-svn: 85522

llvm-svn: 85519

First bitcase use may not lead to a dbg.declare intrinsic. Iterate uses until one find's dbg.declare intrinsic.
Patch by Sunae Seo.

llvm-svn: 85518

bunch of associated comments, because it doesn't have anything to do
with DAGs or scheduling. This is another step in decoupling MachineInstr
emitting from scheduling.

llvm-svn: 85517

llvm-svn: 85515

llvm-svn: 85514

llvm-svn: 85505