This includes not marking a GEP involving a vector as unsafe, but only when it
has all zero indices. This allows scalarrepl to work in a few more cases.

llvm-svn: 57177

llvm-svn: 57148

llvm-svn: 57147

llvm-svn: 57123

and actually work.  We can now read the llvm 2.3 bc file from PR2849

llvm-svn: 57122

llvm-svn: 57114

llvm-svn: 57113

Patch by Robert G. Jakabosky!

llvm-svn: 57110

llvm-svn: 57106

llvm-svn: 57096

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