test return the loaded value.

llvm-svn: 60252

llvm-svn: 60251

llvm-svn: 60250

llvm-svn: 60249

llvm-svn: 60248

llvm-svn: 60243

llvm-svn: 60242

llvm-svn: 60241

Put a some code back to handle buggy behavior that GVN expects: it wants
loads to depend on each other, and accesses to depend on their allocations.

llvm-svn: 60240

llvm-svn: 60239

Use getTypeStoreSize instead of ABITypeSize for in-memory size
in a couple places.

llvm-svn: 60238

precedence rules.  Pacify it.

llvm-svn: 60237

llvm-svn: 60236

llvm-svn: 60235

former does caching, the later doesn't.  This dramatically simplifies
the logic in getDependency and getDependencyFrom.

llvm-svn: 60234

llvm-svn: 60233

Document the Dirty value more precisely, use it for the uninitialized
DepResultTy value.  Change reverse mappings to be from an instruction*
instead of DepResultTy, and stop tracking other forms.  This makes it more
clear that we only care about the instruction cases.

Eliminate a DepResultTy,bool pair by using Dirty in the local case as well,
shrinking the map and simplifying the code.

This speeds up GVN by ~3% on 403.gcc.

llvm-svn: 60232

query.  This makes it crystal clear what cases can escape from MemDep that
the clients have to handle.  This also gives the clients a nice simplified
interface to it that is easy to poke at.

This patch also makes DepResultTy and MemoryDependenceAnalysis::DepType
private, yay.

llvm-svn: 60231

of a pointer/int pair instead of a manually bitmangled pointer.
This forces clients to think a little more about checking the 
appropriate pieces and will be useful for internal 
implementation improvements later.

I'm not particularly happy with this.  After going through this
I don't think that the clients of memdep should be exposed to
the internal type at all.  I'll fix this in a subsequent commit.

This has no functionality change.

llvm-svn: 60230

llvm-svn: 60229

llvm-svn: 60228

llvm-svn: 60227

bitmangling.

llvm-svn: 60226

llvm-svn: 60225

pointer and integer type to be used.

llvm-svn: 60224

properly updates the reverse dependency map when it installs updated 
dependencies for instructions that depend on the removed instruction.

llvm-svn: 60222

llvm-svn: 60221

llvm-svn: 60220

no functionality change.

llvm-svn: 60219

llvm-svn: 60218

llvm-svn: 60217

This shows the root problem behind PR3141.

llvm-svn: 60216

but it doesn't make any sense at all.

Also make the method const, private, and fit in 80 cols while we're at it.

llvm-svn: 60215

llvm-svn: 60214

llvm-svn: 60213

llvm-svn: 60211

predecessor is itself.  This doesn't make sense, and this is
a dead infinite loop anyway.

llvm-svn: 60210

gcc 4.4 (due to use of sprintf).

llvm-svn: 60209

being both a namespace and a variable name.

llvm-svn: 60208

When initialized, the index of the ElementRegion was unsigned. But the index
value of the ArraySubscriptExpr is signed. This inconsistency caused the value
of the array element retrieved to be UnknownVal despite it was initialized to
symbolic.

This is only a hack. Real fix of this problem is required.

llvm-svn: 60207