to know about calls that cannot throw ('nounwind'):
if such a call does throw for some reason then the
personality will terminate the program.  The distinction
between an ordinary call and a nounwind call is that
an ordinary call gets an entry in the exception table
but a nounwind call does not.  This patch sets up the
exception table appropriately.  One oddity is that
I've chosen to bracket nounwind calls with labels (like
invokes) - the other choice would have been to bracket
ordinary calls with labels.  While bracketing
ordinary calls is more natural (because bracketing
by labels would then correspond exactly to getting an
entry in the exception table), I didn't do it because
introducing labels impedes some optimizations and I'm
guessing that ordinary calls occur more often than
nounwind calls.  This fixes the gcc filter2 eh test,
at least at -O0 (the inliner needs some tweaking at
higher optimization levels).

llvm-svn: 45197

llvm-svn: 45196

llvm-svn: 45195

llvm-svn: 45194

llvm-svn: 45193

llvm-svn: 45192

llvm-svn: 45191

llvm-svn: 45190

llvm-svn: 45189

llvm-svn: 45188

llvm-svn: 45187

llvm-svn: 45186

ADT storing FileEntry's in FileManager from a map to a set.

llvm-svn: 45184

to serialized source files.

llvm-svn: 45183

llvm-svn: 45182

the standalone functions ReadASTBitcodeFile and EmitASTBitcodeFile
respectively.

llvm-svn: 45180

Fix serious regression with ObjcInterfaceDecl. Now that we are storing -1 to mean undefined, we need to change the respective getters from unsigned->int.

llvm-svn: 45179

llvm-svn: 45178

TranslationUnit.

llvm-svn: 45177

llvm-svn: 45176

llvm-svn: 45175

llvm-svn: 45174

from
_foo:
        movl    $99, %ecx
        movl    4(%esp), %eax
        subl    %eax, %ecx
        xorl    %edx, %edx
        testl   %ecx, %ecx
        cmovs   %edx, %eax
        ret

to
_foo:
        xorl    %ecx, %ecx
        movl    4(%esp), %eax
        cmpl    $99, %eax
        cmovg   %ecx, %eax
        ret

llvm-svn: 45173

llvm-svn: 45172

accessors to FileEntry to query these values.

llvm-svn: 45171

llvm-svn: 45170

llvm-svn: 45169

llvm-svn: 45168

llvm-svn: 45167

llvm-svn: 45166

llvm-svn: 45165

llvm-svn: 45164

llvm-svn: 45163

Added additional serialization functors for use with std::foreach.

llvm-svn: 45162

llvm-svn: 45161

doesNotThrow.

llvm-svn: 45160

llvm-svn: 45159

Fold certain additions through selects (and their compares) so as to eliminate subtractions. This code is often produced by the SMAX expansion in SCEV.

This implements test/Transforms/InstCombine/2007-12-18-AddSelCmpSub.ll

llvm-svn: 45158

FIX for PR1799: When a load is unfolded from an instruction, check if it is a new node. If not, do not create a new SUnit.

llvm-svn: 45157

reported by Seo.

llvm-svn: 45156