Add testcase and fix for another case where we query the size an
abstract type.

llvm-svn: 18676

For PR387:\
Add getModRefInfo method to avoid overloaded virtuals

llvm-svn: 18601

Fix DeadStoreElimination/2004-11-28-LiveStoreDeleted.ll

llvm-svn: 18308

The trick with globals actually works with allocas and malloc too

llvm-svn: 18262

A store or load cannot alias a global if the accessed amount is larger then
the global.

This implements Regression/Analysis/BasicAA/global-size.ll

llvm-svn: 18261

Simplify conditional and fix LICM/2004-11-17-UndefIndexCrash.ll
by saying what we mean

llvm-svn: 17913

Be more careful about looking for constants when we really want constantint's.

llvm-svn: 17029

Fixes to make LLVM compile with vc7.1.

Patch contributed by Paolo Invernizzi!

llvm-svn: 16152

Merge i*.h headers into Instructions.h as part of bug403.

llvm-svn: 15325

Fix test/Regression/Analysis/BasicAA/2004-07-28-MustAliasbug.llx

This also fixes the miscompilation of MallocBench/gs with dead store
elimination enabled.

llvm-svn: 15324

Make basicaa a bit more aggressive

llvm-svn: 15252

basic-aa can actually provide simple mod/ref info

llvm-svn: 15251

This was implemented back in march

llvm-svn: 15250

Do not ignore casts unless they are pointer-pointer casts. This caused us
to miscompile the SingleSource/Regression/C++/pointer_member.cpp program.

llvm-svn: 15062

bug 122:
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14942

Simplify logic.

llvm-svn: 14825

Fix a tiny bug in the -no-aa pass, in which it did not ever get a target data.
This is a regression from 1.2, though noone uses -no-aa anyway

llvm-svn: 14245

isnan is dead

llvm-svn: 14191

llvm.isnan doesn't access memory

llvm-svn: 14151

Move the -no-aa AA implementation into this file since both of these
alias analysis implementations are special: they do not autoforward to a
chained implementation of alias analysis

llvm-svn: 13683

Hrm, operator new and new[] do not belong here. We should not CSE them! :)

llvm-svn: 12859

operator new & operator new[] do not kill any legal memory locations.

llvm-svn: 12833

Allow clients to be more efficient.

llvm-svn: 12831

Add a couple of more functions that cannot access memory (the intrinsics) and
don't write to memory

llvm-svn: 12808

Support getelementptr instructions which use uint's to index into structure
types and can have arbitrary 32- and 64-bit integer types indexing into
sequential types.

llvm-svn: 12653