shifting and masking inside a bswap expr.  This allows it to handle
the cases from PR2842, which involve the intermediate 'or' 
expressions being shifted, not just the input value.

llvm-svn: 57095

ashr.  It should only apply to lshr.

llvm-svn: 57089

patch by Mikael Lepisto!

llvm-svn: 57077

for llvmc2 incomplete.

llvm-svn: 57076

when deciding whether to mark a function readnone/readonly.
Since the pass is currently run before SROA, this may be
quite helpful.  Requested by Chris on IRC.

llvm-svn: 57050

implementing folding. Fixes PR2857.

llvm-svn: 57049

llvm-svn: 57048

llvm-svn: 57047

llvm-svn: 57046

expand to multiple basic blocks, in which case fast-isel
needs to informed of which block to use as it resumes
inserting instructions.

llvm-svn: 57040

was setting kill flags on tied uses in two-address instructions.
The kill flags were causing the allocator to think it could
allocate the use and its tied def in different registers.

llvm-svn: 57039

Make it all work in non-pic mode.

llvm-svn: 57034

applicable.

llvm-svn: 57033

Thanks Duncan!

llvm-svn: 57029

incidentally making the case where the memop is a
pointer deref work.  Fix cmp-and-swap regression.

llvm-svn: 57027

While hosting instruction check PHI node.

llvm-svn: 57025

llvm-svn: 57021

llvm-svn: 57020

llvm-svn: 57018

llvm-svn: 57017

Instead, just create one, and make sure everything that needs
it can access it. Previously most of the SelectionDAGISel
subclasses all had their own TargetLowering object, which was
redundant with the TargetLowering object in the TargetMachine
subclasses, except on Sparc, where SparcTargetMachine
didn't have a TargetLowering object. Change Sparc to work
more like the other targets here.

llvm-svn: 57016

llvm-svn: 57014

this handling to work properly for modifying stub functions, relocations
back to entry points after JIT compilation, etc..

llvm-svn: 57013

reg->reg moves.

llvm-svn: 57011

NeedStub/DoesntNeedStub logic was reversed, leading to not using a stub
for global relocations that do need them (libc calls, for example).

llvm-svn: 57010

llvm-svn: 57009

llvm-svn: 57008

llvm-svn: 57007

isReg, etc., from isRegister, etc.

llvm-svn: 57006

llvm-svn: 57005

than the type an i1 is promoted to (eg: i8).  Account
for this.  Noticed by Tilmann Scheller on CellSPU; he
will hopefully take care of fixing this in LegalizeDAG
and adding a testcase!

llvm-svn: 56997

Why?  Because it was there!

llvm-svn: 56996

the lock when calling a method which may materialize the llvm::Function.

llvm-svn: 56995

llvm-svn: 56994

It turns out that this is a fairly common operation,
and it's easy enough to handle.

llvm-svn: 56990

getting inserted into the ValueMap. This avoids infinite
recursion in some rare cases.

llvm-svn: 56989

sequences like this:
       sete    %al
       testb   %al, %al
       jne     LBB11_1
with this:
       je      LBB11_1

llvm-svn: 56969

can be used when deciding if a block can transfer control to another
via a fall-through instead of a branch.

llvm-svn: 56968

llvm-svn: 56965

Use a multimap rather than a map for holding the list of copies to insert, so we don't lose copies when two of them have
the same source.  I don't know what I was thinking when I wrote this originally.
Note: There's probably a more efficient way to do this, but I need to think about it some more, and about what determinism
guarantees need to be present.

llvm-svn: 56964