e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
A update of langref will occur in a subsequent checkin.

llvm-svn: 99928

llvm-svn: 99418

Teach simplify libcall to transform __strcpy_chk to __memcpy_chk to enable optimizations down stream.

llvm-svn: 99282

str[r]chr returns its pointer argument so we cannot mark it as nocapture. Thanks to Duncan for spotting my mistake.

llvm-svn: 98671

llvm-svn: 98663

out the remainder of the calls that we should lower in some way and
move the tests to the new correct directory. Fix up tests that are now
optimized more than they were before by -instcombine.

llvm-svn: 97875

can be used in more places.  Add an argument for the TargetData that
most of them need. Update for the getInt8PtrTy() change.  Should be
no functionality change.

llvm-svn: 97844

Safely turn memset_chk etc. to non-chk variant if the known object size is >= memset / memcpy / memmove size.

llvm-svn: 97828

No functionality change.

llvm-svn: 97793

and T->isPointerTy().  Convert most instances of the first form to the second form.
Requested by Chris.

llvm-svn: 96344

isInteger, we now have isFloatTy and isIntegerTy.  Requested by Chris!

llvm-svn: 96223

llvm-svn: 95165

llvm-svn: 95154

Passed bootstrap and nightly test run here.

llvm-svn: 95145

don't use TargetData here.

llvm-svn: 95040

llvm-svn: 95036

llvm-svn: 95035

llvm-svn: 95027

llvm-svn: 94841

llvm-svn: 94783

for strcpy.

llvm-svn: 94287

test on ARM.

llvm-svn: 94198

answers.  This will update as object size checking gets better information.

llvm-svn: 94059

it work for any integer size return type.

llvm-svn: 92853

llvm-svn: 92831

llvm-svn: 92771

llvm-svn: 92615

llvm-svn: 92470

SDISel.  This optimization was causing simplifylibcalls to 
introduce type-unsafe nastiness.  This is the first step, I'll be 
expanding the memcmp optimizations shortly, covering things that
we really really wouldn't want simplifylibcalls to do.

llvm-svn: 92098

llvm-svn: 92084

lowering code and update testcases.

llvm-svn: 91979

llvm-svn: 91875

miscompile (i386.o miscompares) but it happens both with and without
this patch.

llvm-svn: 91532

Will reapply with a fix when I get a chance.

llvm-svn: 91486

llvm-svn: 91438

llvm-svn: 91428

llvm-svn: 90297

object size intrinsic and verify return type is correct. Collect various
code in one place.

llvm-svn: 89523

llvm-svn: 89482

llvm-svn: 89479