llvm-svn: 47251

If we see a memcpy of a pointer, make sure to check later
uses of the pointer as well.

llvm-svn: 47250

llvm-svn: 47249

llvm-svn: 47248

Also, noalias arguments are be considered "like" stack allocated ones for this purpose, because
the only way they can be modref'ed is if they escape somewhere in the current function.

llvm-svn: 47247

llvm-svn: 47246

llvm-svn: 47245

the second half of PR2047

llvm-svn: 47244

llvm-svn: 47243

llvm-svn: 47242

that is also a subtract.  This implements PR2047 and Transforms/Reassociate/subtest2.ll 

llvm-svn: 47241

llvm-svn: 47240

functionality change.

llvm-svn: 47239

llvm-svn: 47238

llvm-svn: 47237

 int foobar(int);
 int foobar() {}

which requires ifdef'ing out a testcase in predefined-function.c.

llvm-svn: 47236

llvm-svn: 47234

llvm-svn: 47233

llvm-svn: 47232

llvm-svn: 47231

llvm-svn: 47230

llvm-svn: 47229

llvm-svn: 47228

llvm-svn: 47227

llvm-svn: 47226

llvm-svn: 47225

but the fixes are reasonable.

llvm-svn: 47224

llvm-svn: 47223

is not passed as an argument to a trampoline intrinsic.

llvm-svn: 47220

llvm-svn: 47219

llvm-svn: 47217

llvm-svn: 47216

I cannot find a libgcc function for this builtin.  Therefor expanding it to a noop (which is how it use to be treated).  If someone who knows the x86 backend better than me could tell me how to get a lock prefix on an instruction, that would be nice to complete x86 support.

llvm-svn: 47213

br_cc.  This fixes 5 "make check" failures.

llvm-svn: 47212

build.

llvm-svn: 47211

llvm-svn: 47210

llvm-svn: 47208

llvm-svn: 47204

zero tokens.  This fixes PR2045, thanks to Neil for finding another 
incredibly subtle corner case :)

llvm-svn: 47203

llvm-svn: 47202