llvm-svn: 60009

llvm-svn: 60008

llvm-svn: 60007

they were too tight according to bug 3126.

Fix bug 3126.

llvm-svn: 60006

llvm-svn: 60005

llvm-svn: 60002

llvm-svn: 60001

llvm-svn: 60000

introduce any new spilling; it just uses unused registers.

Refactor the SUnit topological sort code out of the RRList scheduler and
make use of it to help with the post-pass scheduler.

llvm-svn: 59999

llvm-svn: 59998

llvm-svn: 59997

llvm-svn: 59995

llvm-svn: 59992

llvm-svn: 59990

llvm-svn: 59989

is imported from a protocol into the implementation.

llvm-svn: 59988

llvm-svn: 59987

llvm-svn: 59986

llvm-svn: 59985

llvm-svn: 59983

properly reversed once constructed.

This fixes PR 3125:

http://llvm.org/bugs/show_bug.cgi?id=3125

llvm-svn: 59982

llvm-svn: 59981

llvm-svn: 59979

simplify header dependencies for front-ends that just want to choose
a scheduler and don't need all the scheduling machinery declarations.

llvm-svn: 59978

llvm-svn: 59977

llvm-svn: 59976

llvm-svn: 59975

There might be other, similar bugs lurking there.

llvm-svn: 59974

llvm-svn: 59973

with an undef.

llvm-svn: 59972

- Mark "add with overflow" as having a custom lowering for X86. Give it a null
  lowering representation for now.

llvm-svn: 59971

(a) Slight rethink on i64 zero/sign/any extend code - use a shuffle to
    directly zero-extend i32 to i64, but use rotates and shifts for
    sign extension. Also ensure unified register consistency.
(b) Add new test harness for i64 operations: i64ops.ll

llvm-svn: 59970

to removePred because an SUnit can both data-depend and anti-depend
on the same SUnit.

llvm-svn: 59969

llvm-svn: 59968

obscure tail-merging opportunities.

llvm-svn: 59967

llvm-svn: 59966

(a) Improve the extract element code: there's no need to do gymnastics with
    rotates into the preferred slot if a shuffle will do the same thing.
(b) Rename a couple of SPUISD pseudo-instructions for readability and better
    semantic correspondence.
(c) Fix i64 sign/any/zero extension lowering.

llvm-svn: 59965

llvm-svn: 59964

llvm-svn: 59963

llvm-svn: 59962