llvm-svn: 55919

llvm-svn: 55917

llvm-svn: 55911

llvm-svn: 55904

llvm-svn: 55892

before. This is taken care of in the selection DAG pass. In my opinion, this
should be in one place or the other. I.e., it should probably be removed from
the DAG combiner (along with the other arithmetic transformations on constants
that are essentially no-ops).

llvm-svn: 55889

    // fold (sub c1, c2) -> c1-c2

from a no-op into an actual transformation.

llvm-svn: 55886

llvm-svn: 55880

- Add a AnalyzeCallResult specialized for calls which produce a single value. This is used by fastisel.

llvm-svn: 55879

llvm-svn: 55866

llvm-svn: 55865

out of ScheduleDAGEmit.cpp and into SelectionDAGISel.cpp. This
allows it to be run exactly once per function, even if multiple
SelectionDAG iterations happen in the entry block, as may happen
with FastISel.

llvm-svn: 55863

llvm-svn: 55856

llvm-svn: 55846

llvm-svn: 55845

llvm-svn: 55843

approach here.

llvm-svn: 55842

llvm-svn: 55838

elsewhere due to a missing pattern for
v2f64 = sint_to_fp v2i32.  That is PR2687.

llvm-svn: 55828

llvm-svn: 55824

but less accurate (non-IEEE) code sequences for
certain math library functions.  Add the first of
several such expansions.  Don't worry, if you don't
turn it on it won't affect you.

llvm-svn: 55823

llvm-svn: 55818

in the same block. Fix the entry-block handling to only run at
at the beginning of the entry block, and not any other times.

llvm-svn: 55817

pool loads on X86 in fast isel.  This isn't actually used yet.

llvm-svn: 55814

llvm-svn: 55793

llvm-svn: 55779

llvm-svn: 55769

Fix an overly strict assertion. Source register of a copy may not be killed, it may be killed by an implicit super-register use.

llvm-svn: 55762

No functional change (and no FE change to generate them).

llvm-svn: 55753

in FastISel.

llvm-svn: 55748

classes in the llvm namespace having members with types from
anonymous namespaces.

llvm-svn: 55747

HandlePHINodesInSuccessorBlocks that works FastISel-style. This
allows PHI nodes to be updated correctly while using FastISel.

This also involves some code reorganization; ValueMap and
MBBMap are now members of the FastISel class, so they needn't
be passed around explicitly anymore. Also, SelectInstructions
is changed to SelectInstruction, and only does one instruction
at a time.

llvm-svn: 55746

list that have internal linkage; the linker doesn't need
or want this.  (These objects must still be preserved
at compile time, so just removing them from the llvm.used
list doesn't work.)  Should affect only Darwin.

llvm-svn: 55722

llvm-svn: 55704

Fix an issue where we were reusing materializations of constants in blocks not dominated by the materialization.  This is
the simple fix, materializing the constant before every use.  It might be better to either track domination of uses or
to materialize all constants and the beginning of the function and let remat sort when to do materialization at uses.

llvm-svn: 55703

and SelectionDAGLowering classes, out of SelectionDAGISel.cpp and put
it in a separate file, SelectionDAGBuild.cpp.

llvm-svn: 55701

routines and move them into a separate file, ScheduleDAGEmit.cpp.

llvm-svn: 55699

when searching for redundant subregister dead/kill bits.

Previously it was common to see instructions marked like this:
  "RET %EAX<imp-use,kill>, %AX<imp-use,kill>"

With this change, addRegisterKilled continues scanning after
finding the %EAX operand, so it proceeds to discover the
redundant %AX kill and eliminates it, producing this:
  "RET %EAX<imp-use,kill>"

This currently has no effect on the generated code.

llvm-svn: 55698

llvm-svn: 55692

llvm-svn: 55668