(which does constant folding and more) is called a few lines
later.

llvm-svn: 120042

llvm-svn: 120035

We need to check if the individual vector elements are sign/zero-extended
values.  For now this only handles constants values.  Radar 8687140.

llvm-svn: 120034

llvm-svn: 120033

This allows to transform the rem in "1 << ((int)x % 8);" to an and.

llvm-svn: 120028

Stylistic improvement suggested by Frits van Bommel.

llvm-svn: 120026

llvm-svn: 120025

fairly systematic way in instcombine.  Some of these cases were already dealt
with, in which case I removed the existing code.  The case of Add has a bunch of
funky logic which covers some of this plus a few variants (considers shifts to be
a form of multiplication), which I didn't touch.  The simplification performed is:
A*B+A*C -> A*(B+C).  The improvement is to do this in cases that were not already
handled [such as A*B-A*C -> A*(B-C), which was reported on the mailing list], and
also to do it more often by not checking for "only one use" if "B+C" simplifies.

llvm-svn: 120024

shifts.

llvm-svn: 120022

llvm-svn: 120017

llvm-svn: 120016

are constant.  There was in fact one exception to this (phi nodes) - so
remove that exception (InstructionSimplify handles this so there should
be no loss).

llvm-svn: 120015

While here, remove unused argument and rename UpdateForSlide to Invalidate.

llvm-svn: 120009

llvm-svn: 120006

9.7% speedup running domtree on test-suite.

Reviewed by Chris Lattner.

llvm-svn: 120003

documented and only used by some clang stuff I just removed.

llvm-svn: 120002

llvm-svn: 119999

llvm-svn: 119998

llvm-svn: 119994

llvm-svn: 119993

being in terms of excessively complex template logic.

llvm-svn: 119992

llvm-svn: 119990

patch by Greg Pfeil!

llvm-svn: 119989

on this instcombine xform.  This fixes a miscompilation of 403.gcc.

llvm-svn: 119988

llvm-svn: 119987

llvm-svn: 119986

llvm-svn: 119985

llvm-svn: 119984

llvm-svn: 119982

llvm-svn: 119981

llvm-svn: 119979

Refactor the ELFRelocationEntry (pull up) and move the arch-specific statics to inside the class where it belongs.

Next step is to rationally break apart the RecordRelocation()

Probably the step will be to have 1 member function for ech slot of the ELFRelocationEntry()

llvm-svn: 119978

state. Previously Thumb2 would restore sp from fp like this:
mov sp, r7
sub, sp, #4
If an interrupt is taken after the 'mov' but before the 'sub', callee-saved
registers might be clobbered by the interrupt handler. Instead, try
restoring directly from sp:
add sp, #4
Or, if necessary (with VLA, etc.) use a scratch register to compute sp and
then restore it:
sub.w r4, r7, #8
mov sp, r7
rdar://8465407

llvm-svn: 119977

llvm-svn: 119976

llvm-svn: 119975

then replace the index with zero.

llvm-svn: 119974

In the attached testcase, the element was
never extracted (missing rotate).

llvm-svn: 119973

llvm-svn: 119972

InstructionSimplify.

llvm-svn: 119970

llvm-svn: 119967